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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Development of a food multimix to address malnutrition amongst the elderly

Matiwane, N. B. 05 1900 (has links)
M. Tech. (Department of Hospitality, Faculty of Human Sciences), Vaal University of Technology / Introduction and purpose - The study was conducted in order to determine the nutritional status of the elderly attending a care centre in Sharpeville in order to develop a novel food item, to address malnutrition and to test and analyse the novel food item for acceptability (sensory analysis) and shelflife. Methodology - A randomly selected sample of 170 elderly, including males and females, aged sixty and above participated in the research. A cross-sectional survey included sociodemographic, health and twenty-four hour recall questionnaires as well as anthropometric and biochemical measurements. Trained fieldworkers assisted with data collection dietary intake and food measurements consumption data were captured and analysed with assistance of a qualified dietician using a Food Finder ® version 3.0 program in to determine the frequency, mean and standard deviations. The socio-demographic and health data, biochemical and anthropometric measurements were analysed for means and SDs. Results - Although 100 percent of the elderly received a monthly pension, the majority (72 percent) were bread winners in the households. The majority of households (65,8 percent) had a monthly income ofR 501-1 000. Eighty two percent of the respondents indicated that they bought food once a month and the food was bought mostly from local supermarkets (68,2percent) which are generally very expensive. Most households (63,1percent) spent less than R200 on food per week. Taking into consideration that the average household size was 4,9, it was calculated to be less than R5,80 per person per day. The Top 20 food consumption list indicated that the majority of food items consumed were carbohydrate-based. Dietary intake results confirmed that these households consumed mainly a carbohydrate-based diet and although the daily protein intake was sufficient, the diet was also deficient in total energy and dietary fibre, as well as a number of micronutrients including calcium, magnesium, zinc, selenium, iodine, thiamine, riboflavin, vitamins B6, C, D, E, biotin, pantothenate and folate. These findings indicated the prevalence of undernutrition The biochemical data showed that 73,1 percent of the elderly had low serum zinc levels. A large percentage of men and women had sub-optimal haemoglobin levels. Most of the biochemical variables were within the normal range, however the mean cholesterol level was 5,4 ± 1 ,4mmol/l which was higher than the normal range of 5,2mmolll. The majority ofthe females were overweight and obese, signifying overnutrition in the sample of elderly people. The health status of the respondents was also compromised. A large number of subjects were taking chronic medication (55,9percent) and suffered from a number of disorders including painful joints (70,6percent), enteral infections 72,4 percent) and chronic headaches (48,2percent). Forty one percent received chronic hypertension medication A food multimix was formulated, which involved the blending of locally available, affordable, culturally acceptable and commonly consumed food commodities mixed proportionally, drawing on the 'nutrient strengths' of each component of the mix in order to optimise the nutritive value of the end-product without the need for fortification. The initial estimates of energy and nutrient content of the ingredients needed the appropriate food databases. The nutrient content was calculated using the SA food composition data and Food Finder/Dietary Manager®. At least 30 percent target ratio of the RDA was met in most nutrients in the food multimix. Proximate analysis was carried out to determine macronutrients such as energy, protein, carbohydrate and micronutrients such as zinc and iron content of multimixes. Carbohydrate and energy content were derived using data gained from the analytical procedures. Sub-samples of formulated FMM recipes were taken and prepared for analysis and shelf life testing of the FMM, soup and spinach muffin was also carried. The end products of multimix formulated were two recipes namely cream spinach soup and low sodium spinach muffms. Eighty percent accepted the soup colour and 50percent liked the flavour, 55 percent of the elderly accepted the appearance, 75percent accepted the smell of the product. The dried spinach was mixed with the apple blended well and regarding taste, only 15 percent disliked the taste. Conclusions: The results of this study confirmed that a novel food item such as FMM can be developed to meet certain criteria. Recommendations: Further research is required where long-term effects of the implementation of the multimix in the diet of the elderly can be investigated.
12

Developing and assessing the appropriateness of the preliminary food-based dietary guidelines for South Africans.

Love, Penelope Valmai. January 2002 (has links)
Aim. The aim of this study was to document and provide a critical analysis of the South African Food-Based Dietary Guidelines (FBDGs) development process, and to assess the appropriateness of the proposed South African FBDGs. To achieve this aim, specific study objectives included the following : (1) To document and critically analyse the South African FBDGs process in relation to the 10-step development process recommended by the FAO/WHO. (2) To assess the appropriateness of the proposed South African FBDGs in terms of consumer comprehension (perceptions, general understanding and specific interpretations), and application of the guidelines (ability to apply the guidelines when planning a typical day' s meals for their families). (3) To assess the compatibility of the proposed South Africa FBDGs in terms of food categorisation as perceived by consumers, and as depicted in the food guides that are commonly used. Methodology. An extensive literature review on the development of international dietary guidelines, the emergence of FBDGs and the FAO/WHO FBDGs process, together with documentation of the South African FBDGs process, was used to critically analyse the process used for developing the proposed South African FBDGs. Focus group discussions (n=15) and structured individual interviews (n=230) were held in ten magisterial districts within KwaZulu Natal (KZN), randomly selected according to settlement strata (rural, urban informal, urban formal) and ethnicity (Black, Indian, White) to reflect the KZN population. Participants were women with no formal nutrition training, who made the food purchasing and preparation decisions in the household. A total of 103 women participated in the focus group discussions and 230 women in the structured individual interviews. Results. The process followed by the SA FBDG Work Group has ensured that the proposed South African FBDGs are country-specific in that each FBDG is evidence-based and relates to specific nutrition-related public health concerns of South Africans. Except for the "Eat healthier snacks" FBDG, participants understood and interpreted the FBDGs as intended by health professionals, and could construct a day's meals to reflect the FBDGs. Only two other FBDGs were identified as confusing in terms of terminology used, namely, "legumes" and "foods from animals". By rewording these guidelines the FBDGs would be highly compatible in terms of personal food categorisation. Use of food guides was low, mainly due to a lack of knowledge about how to use them. In terms of food categorisation as depicted by the reportedly most commonly used food guides (3- and 5- Food Group Guides), these food guides are incompatible with the proposed FBDGs. Conclusions. Within the South African context, the FAO/WHO FBDGs development process was feasible and practical to implement. However, to ensure sustainability of the South African FBDGs process, it is strongly recommended that the Department of Health appoint a representative scientific committee specifically for the purpose of reviewing and reformulating the South African FBDGs. Results indicate that a single set of FBDGs can be appropriate for all South Africans provided that certain guidelines are reworded as suggested; and that all the guidelines are accompanied by explanatory information citing commonly consumed foods/drinks as well as practical examples of how to apply the guidelines in light of perceived barriers. In terms of the appropriateness of food guides commonly used in South Africa, there is a need to either move away from the concept of food groups and/or to develop a new South African food guide that is compatible with the proposed FBDGs. / Thesis (Ph.D.)-University of Natal, Pietermaritzburg, 2002.
13

The effects of internal migration and related factors on nutrient intake and anthropometric status of children aged 1-9 years in South Africa, 1999.

Swart, Elizabeth Catherina January 2004 (has links)
The purpose of this study was to provide a national overview on internal migration of children and to relate these migration patterns to the nutritional status of children. This study specifically investigated the internal migration that took place during the life span of the National Food Consumption Survey study population and relates that to their dietary intake and anthropometric status.
14

Factors contributing to the adequate vitamin A status and poor anthropometric status of 24-59-month-old children from an impoverished Northern Cape community

Nel, Jana 03 1900 (has links)
Thesis (MNutr)--Stellenbosch University, 2013. / ENGLISH ABSTRACT: Objective: To examine the factors that may influence the vitamin A and anthropometric status of 24-59-month-old children from an impoverished community with a very high prevalence of stunting, but virtually no vitamin A deficiency. Design: Cross sectional, descriptive study with analytical components. Setting: Calvinia West, Northern Cape Province, South Africa Subjects: Biological mothers (n=150) and their children aged 24-59 months (n=150) living in Calvinia West from 6 months of age or younger. Methods: A general interviewer-administered questionnaire comprising of socio-demographic information, a 24-hour recall and an adjusted food frequency questionnaire, focussing on liver intake, were used in the data collection process. Anthropometric measurements (weight and height) were also performed. Results: Results showed that liver consumption alone contributed to more than 100% of the Estimated Average Requirement (EAR) for vitamin A of the pre-school children in this community. Liver was eaten by 84.7% (n=127) of the children and 68% (n=102) of them ate liver at least once per month. The average portion size of the children who consumed liver was 66g at a time. The national food fortification programme contributed to a further 80 μg Retinol Equivalents (RE) and the national supplementation programme 122μg RE of vitamin A per day. There was a significant (p=0.028) inverse association between the amount of liver intake and household income. Liver intake was also significantly (p=0.016) higher in the children whose mothers were unskilled as opposed to those with skilled mothers. According to the World Health Organization (WHO) growth standards 36.9% (n=55) of the children were stunted (low height for age), 25.5% (n=38) were underweight for age and 12.1% (n=18) were wasted (low weight for height). The mean birth weight of the children (n=141) was 2826g (SD=592). Of these children, 27.7% (n=39) had a low birth weight (<2500g). There was a significant positive correlation (r=0.250; p=0.003) between the birth weight of the child and the child's current height for age. The height of the mother, as well as several indicators of socio-economic status, also correlated significantly with the height for age of the child. Conclusion: In this impoverished community the anthropometric status of the children was poor, but vitamin A deficiency was largely addressed through the regular intake of liver. Poor anthropometric status is therefore not always an indicator of micronutrient deficiencies and blanket supplementation approaches are not necessarily the solution in a country with diverse cultures and eating habits. Apart from the immediate risks and consequences of underweight, stunting and wasting in a community, stunting may also lead to overweight and obesity in the long term. This may result in diseases of lifestyle in later life, adding a further burden to an already weakened community. Appropriate evidence-based interventions aimed at the first thousand days of life should be a priority in this community. / AFRIKAANSE OPSOMMING: Doel: Om die faktore wat kan bydrae tot die vitamien A en die antropometriese status van kinders 24-59-maande in 'n arm gemeenskap met 'n baie hoë voorkoms van dwerggroei, maar byna geen vitamien A gebrek, te ondersoek. Ontwerp: Beskrywende, deursnit studie met analitiese komponente Omgewing: Calvinia Wes, Nood Kaap provinsie, Suid-Afrika Deelnemers: Biologiese moeders (n=150) en hul kinders in die ouderdomsgroep, 24-59-maande (n=150) woonagtig in Calvinia Wes sedert 6 maande van ouderdom of jonger. Metodes: 'n Vraelys bestaande uit sosio-demografiese inligting, 'n 24-uur herroep en 'n aangepaste voedsel frekwensie vraelys gefokus op die inname van lewer, was gebruik om data in te samel en voltooi deur die onderhoudvoerder. Antropometriese metings (gewig en lengte) was ook geneem. Resultate: Resultate het getoon dat lewer inname bygedra het tot meer as 100% van die geskatte gemiddelde behoefte van vitamien A vir die voorskoolse kind in hierdie gemeenskap. Lewer was deur 84.7% (n=127) van die kinders ingeneem en 68% (n=102) het dit ten minste een keer per maand geëet. Die gemiddelde porsie grootte van die kinders wat lewer ingeneem het, was 66g op 'n keer. Die nasionale voedsel fortifisering program het 'n verdere 80 μg Retinol Ekwivalente (RE) en die nasionale supplementasie program 122μg RE vitamin A per dag bygedra. Daar was 'n betekenisvolle (p=0.028) omgekeerde korrelasie tussen die die hoeveelheid lewer wat deur die kinders ingeneem is en die huishoudelike inkomste. Lewer inname was ook betekenisvol (p=0.016) meer in kinders wie se moeders ongeskool was teenoor die met geskoolde moeders. Volgens die Wêreld Gesondheid Organisasie se groeistandaarde het 36.9% (n=55) van die kinders dwerggroei getoon (te kort vir hul ouderdom), 25.5% (n=38) was ondergewig vir hul ouderdom en 12.1% (n=18) uitgeteer (ondergewig vir hul lengte). Die gemiddelde geboortegewig van die kinders (n=141) was 2826g (SA=592). Van hierdie kinders het 27.7% (n=39) 'n lae geboortegewig (<2500g) gehad. Daar was 'n betekenisvolle positiewe korrelasie (r=0.250; p=0.003) tussen die geboortegewig van die kind en die huidige lengte vir ouderdom. Die lengte van die moeder, sowel as ander sosio-ekonomiese status aanwysers het ook betekenisvol gekorreleer met die lengte vir ouderdom van die kind. Samevatting: In hierdie arm gemeenskap was die antropometriese status van die kinders swak, maar vitamien A gebrek was grootliks aangespreek deur die gereelde inname van lewer. 'n Swak antropometriese status is dus nie altyd 'n aanduiding van mikronutriënt tekorte nie en 'n oorkoepelende aanslag van supplementasie is nie noodwendig 'n oplossing in 'n land met diverse kultuur en eetgewoontes nie. Behalwe vir die onmiddelike gevare van ondergewig, dwerggroei en uittering in 'n gemeenskap, het kinders met dwerggroei 'n groter risiko om oorgewig en vetsugtig te word in die langtermyn. Dit kan lewensstyl siektes veroorsaak in latere lewe en 'n verdere las op 'n reeds verswakte gemeenskap plaas. Toepaslike intervensies, gemik op die eerste duisend dae van lewe, behoort 'n prioriteit te wees in hierdie gemeenskap.
15

Factors that influence attitude, beliefs and barriers of caregivers regarding complementary feeding practices of infants aged 6 – 12 months in the Breede valley district of the Western Cape

Matthysen, Mariska 04 1900 (has links)
Thesis (Mnutr)--Stellenbosch University, 2014. / ENGLISH ABSTRACT: Inappropriate feeding practices are a major cause of malnutrition in young children. Within this context, it has been well documented that the incidence of malnutrition rises sharply during the period from six to 18 months of age in most countries. Complementary feeding typically covers the period from six to 24 months of age. Renewed focus has been placed on the promotion of breastfeeding. Similar attention should be paid to complementary feeding. Six percent of deaths per year are preventable through good complementary feeding practises. To improve infant nutrition it is important to know the local infant and young child feeding practises present in communities but also to identify and understand the underlying factors that influence these practises. Aim The study aimed to describe the various factors that influence complementary feeding practices of infants aged 6 – 12 months in 2 communities (Avian Park and Zweletemba) in the Breede Valley district of the Western Cape. Methods The study was conducted from May – July 2012. A descriptive study design was used. A qualitative approach was followed with the use of focus group discussions with mothers / primary caregivers, fathers and grandmothers of infants aged 6 – 12 months. Results The findings of this study provide insight into different aspects regarding early cessation of breastfeeding that could lead to early introduction of complementary foods. In both Avian Park and Zweletemba the age of introduction of liquids and solids ranged from birth to 12 months. Various liquids such as water, over the counter medicine, high concentrated sugar beverages and low nutrient beverages were given to infants from as young as two days post-partum by means of a feeding bottle. Cow’s milk was also introduced before six months of age for reasons such as affordability, availability and because cow’s milk does not need boiling water for reconstitution like formula milk, especially when access to electricity is inadequate. Infants from both communities also received meelbol (flour and water beverage) fed either via feeding bottles (as a beverage) or as porridge fed to the infant with a spoon. Porridge (especially rice cereal and maize meal porridge) was introduced to infants from one week post-partum and infants from both areas also received family “food from the pot” before the age of 6 months. In this study it was found that it was most often a female (either the mother or the grandmother) in the household who was responsible for buying and preparing food and for feeding the infant. Health care workers, members of the mothers’ household as well as community members were identified as key role players in conveying information regarding breastfeeding and complementary feeding from birth to 1 year. Various factors were identified in this study that influenced suboptimal infant feeding practises in Avian Park and Zweletemba. The main factors identified were i) health, ii) physiological, iii) nutritional, iv) educational, v) behavioural, vi) financial and vii) social factors. Other aspects mentioned were viii) demographic and x) commercial factors. Conclusion Results indicated that the current practices and factors influencing the feeding practices in Avian Park and Zweletemba were similar there was very little to no cultural differences between the two communities in terms of current practices and influencing factors. The findings of this study have highlighted the importance of involving all household members in interventions, as well as the larger community in a public nutrition approach. Factors influencing current feeding practises should be considered carefully when planning future interventions to improve infant feeding practises. / AFRIKAANSE OPSOMMING: Onvanpaste voedingspraktyke is ‘n groot oorsaak van wanvoeding in jong kinders. Binne hierdie konteks is dit goed gedokumenteer dat die voorkoms van wanvoeding skerp styg gedurende die tydperk vanaf ses tot 18 maande ouderdom in die meeste lande. Komplimentêre voeding dek tipies die tydperk van ses tot 24 maande oud. Hernude fokus word geplaas op die bevordering van borsvoeding. Komplimentêre voeding behoort soortgelyke aandag te kry. Ses persent van sterftes per jaar is voorkombaar deur goeie komplimentêree voedingpraktyke. Om kindervoeding te verbeter is dit belangrik om bekend te wees met plaaslike baba- en jong kind praktyke in gemeenskappe, en ook om die onderliggende faktore wat hierdie praktyke beïnvloed te identifiseer en verstaan. Doelwit Hierdie studie het gepoog om die verskillende faktore ten opsigte van die komplimentêre voeding praktyke van babas tussen 6 – 12 maande te beskryf in 2 gemeenskappe (Avian Park en Zweletemba) in die Breede Vallei distrik van die Wes-Kaap. Metodes Die studie is uitgevoer vanaf Mei – Julie 2012. ‘n Beskrywende studie ontwerp is gebruik. ‘n Kwalitatiewe benadering is gevolg met die gebruik van fokusgroepbesprekings met moeders / primêre versorgers, vaders en oumas van babas tussen 6 – 12 maande. Resultate Die bevindinge van hierdie studie voorsien insae in die verskillende aspekte van die vroeë beëindiging van borsvoeding wat kan lei tot vroeë bekendstelling van komplimentêre voeding. In beide Avian Park en Zweletemba het die ouderdomme van insluiting van vloeistowwe en vaste stowwe gewissel van geboorte tot 12 maande.Verskeie vloeistowwe soos water, oor-die-toonbank-medisyne, hoë konsentrasie suiker drankies en lae voedingswaarde drankies was aan babas gegee so vroeg as twee dae post-partum deur middel van ‘n voedingsbottel. Koeimelk was ook gegee voor 6 maande, om redes soos bekostigbaarheid, beskikbaarheid en omdat koeimelk nie kookwater benodig vir hersamestelling soos formule melk nie, veral in situasies waar toegang tot elektrisiteit onvoldoende is. Babas van beide gemeenskappe was ook meelbol (meel en water drankie) gevoer óf via voedingsbottels (as ‘n vloeistof) of as ‘n pap wat gevoer word met ‘n lepel. Pap (veral ryspap en mieliemeelpap) was gegee vanaf een week post-partum en babas van beide gebiede het ook familie kookkos ontvang “vanuit die pot” voor 6 maande. In hierdie studie is bevind dat dit heel dikwels ‘n vrou (óf die moeder of ouma) in die huishouding is wat verantwoordelik is vir die koop en voorbereiding van voedsel asook die voer van die baba. Gesondheidswerkers, lede van die moeder se huishouding sowel as lede van die gemeenskap is geïdentifiseer as belangrike rolspelers in die oordrag van inligting oor borsvoeding en komplimentêre voeding vanaf geboorte tot een jaar. Die belangrikste faktore geïdentifiseer was verwant aan: i) gesondheid, ii) fisiologie, iii) voedingswaarde , iv) opvoedkunde, v) gedrag, vi) finansies en vii) sosiale faktore. Ander aspekte genoem is: vii) demografiese en x) kommersiële faktore. Gevolgtrekking Resultate het aangedui dat die huidige voedingpraktyke soortgelyk was in Avian Park en Zweletemba en dat daar baie min kulturele verskille tussen die twee gemeenskappe was in soverre huidige praktyke en faktore wat dit beïnvloed. Die bevindinge van hierdie studie het die belangrikheid daarvan uitgelig om al die lede van die huishouding, sowel as die breër gemeenskap in te sluit in intervensies met ‘n openbare voeding benadering. Faktore wat die huidige babavoeding praktyke beïnvloed moet versigtig oorweeg word tydens die beplanning van toekomstige intervensies om babavoeding praktyke te verbeter.
16

The effectiveness of school nutrition programme of the Eastern Cape Department of Education

Ndilele, Theodora Zola January 2016 (has links)
This dissertation is about the National School Nutrition Programme (NSNP) in South Africa. This Programme was introduced by government in 1994 with the aim of alleviating poverty; unemployment and improving learning capacity of children. Specifically, it is intended to help poor children and to empower poverty-stricken communities, particularly in the rural areas across all the nine provinces. The focus of this study is on the investigation of effectiveness and efficient management of the Programme in the Eastern Cape Province, with specific reference to Mhlontlo District. Mhlontlo district is one of the predominantly rural areas in the province of the Eastern Cape, a remote area characterized by high levels of poverty and unemployment, and low levels of infrastructural developments. Surrounding Schools in the area are also affected by these problems. Learners at these schools are from poor families. It is for this reason that this scheme becomes important as it is most needed and, to effectively and efficiently realise its intended objectives, it must be properly managed. The main theme of the study revolves around effective and efficient service delivery that must be taken as the first priority in the management of NSNP. Factors that contribute to efficiency and effectiveness must be taken into consideration by all stakeholders and are outlined as follows: The aims in this study is to assess the effectiveness of management of the National School Nutrition Programme at Mhlontlo district in the eastern Cape, to identity shortcomings in the management of the Programme and to suggest possible remedies to improve the management of the Programme to effective service delivery. Against the background of the problem statement, the following questions were posited. How can the management of the National School Nutrition Programme with specific reference to Mhlontlo district be enhanced to ensure that its intended objectives are realized? What effect will improved management have on service delivery in the National School Nutrition Programme? And how will adherence to the Batho Pele Principles improve service delivery in schools with regard to the National School Nutrition Programme? The target population in this study was the learners, teachers and community of Schools around Mhlontlo District whose children are being catered for at school as respondents. Statistics of learners who are beneficiaries of this programme were obtained from surrounding Schools. The percentage of the response to the questions led to the results that services are not delivered as effectively as expected. The study concluded by recommendations of what national and provincial department of Education are required to do together with the school, service providers and the community in order to improve service delivery in schools that participate in the NSNP. Finally, the NSNP is for the deprived citizens of South Africa. The onus is on the community of Mhlontlo District, service providers, teachers and education authorities responsible for the NSNP to work together to make the programme effective for advancing the development of young people.
17

Nutritional value and cultivation requirements of Cleome Gynandra: a wild vegetable growing in the Eastern Cape Province, South Africa

Sowunmi, Linda Ifeanyichukwu January 2015 (has links)
South Africa has wide ranges of plants among which are leafy vegetables growing in the wild. These wild vegetables have been reported to have high nutritive and medicinal potentials. Yet, there is still high prevalence of malnutrition and micronutrients deficiencies among the low income bracket of the population. Effective utilization of wild vegetables has been proposed as part of the solutions to address the problem of dietary deficiencies among the populace. Their importance is mainly as relish to accompany and complement starch based diets. They are also known to serve as supplements for food which have the potential to improve the health status of its consumers in many rural communities. Cleome gynandra L. (Capparaceae) is one of the underutilized species mentioned during asurvey conducted in Nkonkobe municipality of the Eastern Cape Province, South Africa. The plant is an erect annual herb with alternate, palmately compound leaves and its petals are white, pink or lilac. It grows as a weed in this part of the Province and is usually gathered from the wild for food and medicine. It is commonly found on wastes land, road sides and on grass lands. Therefore, this research work was designed to contribute to the possible domestication of this wild vegetable in order to explore the nutritive and therapeutic potentials which would broaden the food base in the Eastern Cape Province. The ultra-micromorphological features of plants have become an essential tool in proper identification and authentication of several plant species. In the light of this, the micromorphology of Cleome gynandra was examined to reveal the micro-morphological characters of the plantand to determine if micro and macro mineral elements are present using energy dispersive x-rays. The present study revealed the epidermal cells of the leaves to be asymmetric in shape with undulating cell walls having four subsidiary cells around the stomata. The leaves have anomocyctic stomata which are more distributed in the abaxial surface than the adaxial surface. The mean length and width of the guard cells in the abaxial surface are 0.09 ± 0.01 mm and 0.08 ± 0.01 mm respectively while that of adaxial surface are 0.1± 0.01 mm and 0.07 ± 0.01 mm respectively. The energy dispersive x-rays (EDXS) micro-analysis of the leaf revealed the presence of phosphorus, manganese, iron, calcium, sodium, magnesium, potassium and zinc as the major constituents of the crystal deposits present in the stomata pores and the mesophyll. C. gynandra was collected from the wild and analysed for its mineral and proximatecomposition using standard analytical methods. The plant showed high levels of sodium, iron, zinc, calcium and potassium while many other macro and micro minerals were moderately present. Amongst the proximate factors investigated, moisture content was found to be 82.1% while crude fibre and protein contents were 39.9 percent and 31.03 percent respectively. Vitamin C was also high (345.3 mg/100g). The anti-nutrients compositions revealed low concentrations of oxalate (7.4 ± 0.4) and phytate (0.6 ± 0.0) mg/100g. The study revealed high nutritive value of the species growing naturally from the wild. Interest in the phenolic compounds has greatly increased recently because these compounds have been implicated in suppressing the risk of degenerative diseases in humans. The pharmacological properties of plants may be related to their antioxidant capacities and hence there was need to investigate the antioxidant potential using aqueous, ethanolic and acetone extracts of different parts of C. gynandra. The quantities of phenols, flavonoids and flavonols were significantly higher (p < 0.05) in both aqueous and ethanol extracts of the leaf while the concentration of proanthocyanidins was higher in the aqueous stem extract compared to other plant parts. The aqueous extract of the different parts exhibited better ABTS, reducing power and NO radical scavenging abilities than ethanol extract.
18

Anthropometric profile and food consumption patterns of an emerging middle income community in Umlazi

Memela, Sinenhlanhla Ntokozo January 2017 (has links)
Submitted in fulfillment of the requirements for the degree of Masters of Applied Science in Food and Nutrition, Durban University of Technology, Durban, South Africa, 2017. / Introduction: The nutrition transition is a global phenomenon affected by developing economic prosperity. ‘Nutrition transition’ may be defined as changes in dietary patterns and nutrient intakes occurring in individuals, families, groups of people or whole populations when the food environment and other circumstances change. Post-1994 democratic elections in South Africa, economic laws called for the de-racialization of the economy. As a result of the annulment of the apartheid laws in the 1990s entrepreneurial opportunities became available for black people. Based on the 2011 Census, the middle class constituted 8.3 million (17%) out of the 51 million population in South Africa. Blacks made up 51%, whites 34%, coloureds 9% and Indians 6%. This is a vast difference from two decades prior to this when blacks made up only 3.3% of the population, with coloureds making up 9.1% and Indians 18.5%. In a number of Sub-Saharan African studies obesity has been shown to have a significant link to socio-economic status determined by access to water and electricity, smaller numbers of members residing in one household and increased amounts of money spent on food among other factors, which all promote a tendency to leading a more Westernised lifestyle. The main objective of the study was to determine the anthropometric status and analyse the food consumption of a community of emerging middle income status in Umlazi Township (Ward 84) outside Durban in the province of KwaZulu-Natal. Methods: This study had a sample size of n=250 adult men (n=56) and women (n=194) who were heads of households or primary caregivers above the age of 19 years old with households receiving a total household income of more than R100 000.00 per annum/ more than R8000.00 per month. The study was quantitative and descriptive in nature with different tools used to measure the sample population. These included waist circumference and height and weight measurement to determine BMI and WHtR. A socio-demographic questionnaire was completed where the multi-dimensional poverty index (MPI) was established; a food frequency questionnaire (FFQ) and three 24-hour food recall were also administered to all participants; one weekend day recall and two weekday recalls. Data were analysed on SPSS and nutrient analysis done through Food Finder Version 3 Software and compared to the World Health Organisation standards recommendations for optimal health. Results: The mean age of the group was 52 years old. Slightly more than half (51.6%; n=129) of the population was unemployed. Retired participants made up 27.2% (n=68) of the population. The majority (80%) of the households indicated that between one to three members contributed to the total household income. The MPI of the Ward 84 community amounted to 9.09. The prevalence of obesity was 37.59% (n=21) among men and 76.80% (n=149) for women. Women had a higher prevalence of risk factors linked to non-communicable diseases than men. Mineral and fat soluble vitamin intake was deficient; however protein and carbohydrates were consumed in excess with means of 187.70% and 111.43% respectively. Top 20 foods consumed lists indicated that little fruit or vegetables were consumed. The average food variety score was medium indicating the consumption of between >30 but <60 different foods across the total population. A positive relationship of statistical significance was found between food variety score and income (p=0.007). Conclusion: The Ward 84 community consisted of an ageing population with households mostly supported by another member’s income from within or outside the household. The adults had sufficient education to have secured promotions in the employment arena and could afford a lifestyle similar to that of those who had always been more privileged. Although the Umlazi residents benefited from good housing and infrastructure and appeared to have averted poverty, the prevalence of overnutrition malnutrition was high and linked with an excessive intake of macronutrients. Majority (70%) of the community of Ward 84 is ‘food secure’ as indicated by the number of participants’ households indicating never having a shortage of money to buy food. This correlates negatively with the high prevalence of overweight and obesity (BMI) (p=-0.029). According to literature a persistent issue in black communities is the acceptance of an overweight body image being perceived as ‘healthy’ and an indicator of affluence. This community appears to be in the 4th stage/ pattern of the nutrition transition. It appears that a ‘westernised diet’ and lifestyle is more accessible and is embraced by this urban community as described in various literature and seen in the top 20 foods lists compiled from the 24 hour recalls. There is some oversight regarding the nutrient quality of a varied diet and achieving energy balance with macronutrient intake linked to informed nutritional choices. Suggested interventions could include the dissemination of information regarding nutrition and practical suggestions to achieve energy balance. In addition, future research could investigate the prospects of introducing participation in urban agriculture, investigate the issue of physical activity, and foster an environment for more physical activity and increase availability and access to micronutrient dense foods and investigate the development of a body mass index specifically for the black African population. / M
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Growth of the South African abalone (Haliotis Midae) on three diets, under commercial conditions

Makhande, Emmanuel Denis January 2008 (has links)
Haliotis midae is the cornerstone of the South African abalone fishery. For more than a decade, the wild abalone stock of South Africa has suffered decline due to over-exploitation and illegal activities such as poaching. Prior to 1970, no regulations were in place concerning the annual landings. As a result the fishery was exploited as if it were an infinite resource. It is this initial uncontrolled harvesting (regardless of age) and poaching that has driven the abalone resource decline. Due to the slow growth rate exhibited by abalone as a species, natural replenishment of wild stock following exploitation and poaching was far below the rate of exploitation of this resource. Studies on the growth of abalone have mainly been conducted under laboratory conditions. The purpose of this study was to measure the growth of abalone, fed different diets, under commercial culture conditions. Three food types were used namely; commercial pellets, seaweed (Ulva spp.) and dried kelp bars (Ecklonia maxima). Four diets were obtained from the three food types namely; combination of commercial pellets and seaweed (Diet A), commercial pellets only (Diet B), seaweed only (Diet C) and dried kelp bars only (Diet D). The food types used in this study represent both artificial (Commercial pellets) and natural feeds (seaweed and kelp) used in commercial abalone culture. The growth of two cohorts (40-50 mm and 50-60 mm) was followed over a 426 day period, with data for the first 183 days being used for statistical analysis to determine performance of a given diet. The best growth rates were found in abalone fed Diet A (40-50 mm: 2.64 mm.month-1; 50-60 mm 2.78: mm.month-1) and B (40-50 mm: 2.20 mm.month-1; 50-60 mm: 2.35: mm.month-1). These (Diets A and B) gave higher growth rates when compared to Diets C and D (natural diets), whose growth rates ranged between 0.50 mm.month-1 and 1.71 mm.month-1 for both cohorts. Also observed in this study was that, the mixture of formulated diet and seaweed gave better growth than formulated diet given exclusively.
20

The effect of different levels and intervals of application of ammonium sulphate on the growth, chemical composition and yield of cayenne and queen pineapple plants under field conditions

Van Lelyveld, Louis Johannes January 1965 (has links)
From the Introduction. The fertilisation of pineapples in the Eastern Cape Province is still a relatively new practice which started approximately twelve years ago. Even after this time many growers still insist that pineapples can be grown without fertilisation on virgin soils. As the available virgin soil decreased, however, so the interest in fertiliser application increased. Very little basic research on the fertiliser requirements of pineapples in the Eastern Cape was done to serve as a guide to growers. The available advisory literature by le Roux (1951), Malan (1954) and Lewcock (1956) were based on overseas experience. When pineapple research was started on a large scale, in 1955, it was realised that emphasis should be placed on the nutritional requirements on virgin as well as replanted soils. From initial experiments it was clear that the main response in plant growth and yield was obtained from nitrogenous fertilisers.

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