Thesis (M. Sc. (Dietetics)) -- University of Limpopo, 2021 / Background: Most school food environments in low socioeconomic countries offer cheaper unhealthy snacks of low nutritional value. Generally, these defeat the aims and goals of the National School Nutrition Programmes that offers nutritionally balanced meals to enhance concentration and learning. These unhealthy snacks that are available in school food environments have the ability to promote food choices that may lead to early onset of obesity and diseases of the lifestyle. The creation of healthy school food environments should be observed as a fundamental priority and a responsibility to all stakeholders with the necessary powers. Objectives: The study explored the perspective of school vendors, learners and school governing bodies on snack sale in selected primary schools of Dimamo circuit, Limpopo Province, South Africa. Design and Methods: A cross-sectional, exploratory descriptive study was conducted on the perspectives of vendors, learners and school governing bodies on the sale of snacks in selected primary schools of Dimamo circuit, Limpopo Province, South Africa. Data were collected with 69 participants using a semi-structured questionnaire in one-on-one interviews and focus group discussions at three public schools in the Dimamo circuit. Criteria for trustworthiness were adhered to throughout the study. Ethical principles were adhered to in order to ensure the ethical standards of the study. Findings: A negative perception regarding the sale of snacks was found by both the learners and school governing bodies. However, the vendors were reluctant to raise their views with regard to the snacks sold in schools despite them being aware of the diseases experienced, such as ringworms, rash and vomiting. Improved hygiene practices and sale of healthy snacks was suggested by learners while drawing of a school food policy was seen as a last resort to improve the school food environment. Conclusion: A negative perception towards unhealthy snacks exists among the learners and teachers as they have been disruption in teaching and learning; due to random absenteeism associated with ailments allegedly caused by consumption of unhealthy snacks. However, the vendors reported learners’ preference for the sale of unhealthy snacks viii over the healthy ones due to cost. Furthermore,the vendors reported that the provision of free fruits by the NSNP in school was a challenge. Lack of cooperation, accountability and responsibility amongst the School Governing Bodies (SGB) and vendors were a barrier to facilitating a healthy food environment.

The Blyde Canyon Nature reserve displays its natural beauty for most National and International visitors all over the World. The region is renowned for its high rainfall and misty weather, which enhances the natural beauty of the area. Because of the mist belt effect, the area is one of the largest commercial forestry areas in South Africa. Baboons also seek after the topography and vegetation type (Northeastern mountain sourveld) that is typical of this area and numerous baboon troops occur in this region. This combination is often the cause of conflict between baboons and humans. The need arise for these baboons to be studied and managed as a component of this very important ecosystem. The main aims of the study were firstly to identify a natural ranging baboon troop, to habituate them and gather data regarding home range sizes, troop sizes, densities and seasonal food selection and secondly to give a detailed habitat description and vegetation map of the troop's home range. The baboon activity data was collected in 15-minute intervals over a one year period on a troop at Bourke's Luck. This included all activities such as walking, social, foraging, and resting. The food parts selected as well as the species foraged on was identified. Numerous statistical methods were used on the baboon data such as; the Shapiro Wilk test, Spearman rank-order correlation, ANOVA, and the Kolmogarov-Smirnov two sample test. There was a positive correlation between home range areas and troop sizes and the baboons preferred certain habitats above others during different seasons. To give a detailed habitat description of the troop's home range, 50 sample plots was stratified-randomly distributed in order to include all the different stratification units. a TWINSPAN classification, refined by Braun-Blanquet procedures was carried out on the Bourke's Luck section that included the baboons home range. 13 Plant communities, which can be grouped into 7 major community types were identified. This study resulted in the ecological interpretation of baboon activities related to the ecological interpretation of the vegetation in the baboon troop's home range. / Agriculture, Animal Health and Human Ecology / M.Tech. (Nature Conservation)

A high rate of micronutrient deficiencies persists in Africa with the most vulnerable groups being women and children. The Moringa oleifera tree has been identified to help alleviate malnutrition at household level because of its rich content of vitamin A in its plant form - beta-carotene, iron and vitamin C. The objectives of this study was to identify households that consumed Moringa, to identify households that required diet diversification through the use of a Household Dietary Diversity Score (HDDS) and to determine the acceptability of various dishes prepared from Moringa leaves as a possible contribution to the alleviation of malnutrition in resource poor communities. The dietary diversity score of the traditional Bapedi community is 4.7 and the results of the acceptability test of dishes prepared with Moringa indicated that Moringa could be recommended as an additional food ingredient to add micronutrient to the diet of Bapedi communities. / Agriculture and Environmental Sciences / M.A. (Human Ecology)

Food is one of the main routes by which xenobiotic (synthetic) chemicals enter the body of man and wildlife. The routes could be from wrappers in which the foods are presented with possible transfer of the compounds to consumers, hence need for regular screening. The research work is aimed at investigating possible prevalence of phthalate esters in selected foods (cheese, polony and vienna) and their plastic wrappers from commercial stores in Tshwane metropolis. Food samples were purchased from selected stores, taken to the laboratory and stored at 4oC until analysed. Analysis was done by soxhlet extraction while determination and quantification of phthalates was carried out using Gas Chromatography-Flame Ionization Detection (GC-FID). Quality assurance of the process was by standard addition of the phthalate ester standards. Results obtained revealed good chromatographic separation of the analysed esters which ranged from 5.55 min for Dimethyl phthalate (DMP) to 8.96 min for Benzylbutyl phthalate (BBP). Instrumental detection limit of the esters varied from 0.03 - 0.05 μg/kg. The percentage recovery of the phthalate esters ranged from 75 – 90% from spiked cheese samples; 33 – 66% from spiked polony samples and 69 – 99% from spiked vienna samples. These recoveries are quite acceptable and applicable to the analysis and quantification of the compounds in the samples with the exception of Dibutyl phthalate (DBP) (33%); DMP (34%) and BBP (46 %) in polony samples. Results from chromatographic quantification revealed the absence of or non-detection of most of the analysed phthalate esters in the selected food samples. However, level of 0.031 μg/kg of BBP - 0.816 μg/kg of DMP were obtained in some of the analysed samples. / Environmental Sciences / M.Sc. (Environmental Science)

This study evaluates the school feeding programme at Magog Primary School. It sets out as its objective to find out how the programme operates and its potential impact on school children, including challenges, if any, and recommends solutions to mitigate the challenges. It was motivated by the need to provide information which could be used as a basis to ensure that the nutritional and educational objectives of the National School Nutritional Programme are achieved. A review of literature demonstrated that, within the developmental framework, the point of view of civil society, government and the academia on the school feeding programmes are a valuable strategy to intervene in the nutritional and cognitive development of learners. It also made it evident that there are diverse views as to whether the School Feeding Programme is achieving its intended objectives. The findings of this study suggest that, although the programme has the potential to improve nutrition and health, enrolment, attendance and cognitive development, there are still some challenges and areas that need to be addressed and improved. These challenges arise as a result of lack of effective monitoring and evaluation, geographical location of the schools and other implementation flaws. The consequences are that the objectives of the National School Nutritional Programme are placed at risk. / Development Studies / M.A. (Development Studies)

Submitted in fulfilment of the requirements for the degree Master of Applied Science in Food and Nutrition, Durban University of Technology, 2015. / Objective: To determine the contribution of packed school lunches to the daily food intake of girls and boys in two Primary Schools in East London. Methods: The study was conducted among 199 girls and boys aged 9-13 years. Three 24-Hour recalls and a Food Frequency Questionnaire were completed during an interview with the participants to gather data on dietary patterns over a period of three consecutive days. Additionally, the contents of one lunch box per participant were recorded and weighed. Anthropometrics and socio-demographics were also completed during the interview. Results: The three 24-Hour Recall nutrient measurements revealed a low energy intake in 91 percent for the girls and 77 percent for the boys who were consuming below the recommended Estimated Energy Requirement for energy. The lunchboxes contributed one-third of the daily nutrient intake of the children. The 24-Hour recall revealed an energy-dense, carbohydrate-based diet. The contribution of total fat (30-32%) to the total energy is higher than the World Health Organization (WHO) recommendation of 15-30 percent. The daily fruit and vegetable intake (215.1g and 216.9g), according to the 24-Hour recall and lunchbox analysis respectively, was insufficient compared to the WHO-recommendation of >400g /day. Although the mean intake of most of the nutrients was sufficient, a large number of the participants did not meet requirements for the age group. The risk of overweight was high (24% for girls and 29.2% for boys) with 1.5 percent falling into the obese category. Conclusion: The results of the study indicated a high-fat and carbohydrate intake and a very low fruit and vegetable intake. The girl participants had better food choices for the lunchboxes but the majority of the participant’s daily intake did not meet the basic requirements of a balanced diet. The risk of overweight in the age category is an increasing problem among low- and high-income countries. Nutritional education should concentrate on healthy food choices in school lunchboxes as a large part of the day is spent at school.

This study evaluates the school feeding programme at Magog Primary School. It sets out as its objective to find out how the programme operates and its potential impact on school children, including challenges, if any, and recommends solutions to mitigate the challenges. It was motivated by the need to provide information which could be used as a basis to ensure that the nutritional and educational objectives of the National School Nutritional Programme are achieved. A review of literature demonstrated that, within the developmental framework, the point of view of civil society, government and the academia on the school feeding programmes are a valuable strategy to intervene in the nutritional and cognitive development of learners. It also made it evident that there are diverse views as to whether the School Feeding Programme is achieving its intended objectives. The findings of this study suggest that, although the programme has the potential to improve nutrition and health, enrolment, attendance and cognitive development, there are still some challenges and areas that need to be addressed and improved. These challenges arise as a result of lack of effective monitoring and evaluation, geographical location of the schools and other implementation flaws. The consequences are that the objectives of the National School Nutritional Programme are placed at risk. / Development Studies / M. A. (Development Studies)

Globally largemouth bass Micropterus salmoides is one of the most widely introduced game fish species which has now become invasive in many countries. Well researched in its native North America, there are few studies on this species in its introduced range. This study aims to improve the understanding of the biology and ecology of M. salmoides in temperate southern Africa, where it threatens native biota and supports a popular recreational fishery. This aim was addressed by assessing the age, growth, maturity, reproductive seasonality, feeding, mortality and movement, of two M. salmoides populations from Wriggleswade (1000 ha, 723 m amsl, 32º35'S; 27º33'E) and Mankazana (35 ha, 66 m amsl, 33º09'S; 26º57'E) Dams in the Eastern Cape of South Africa. The most suitable structure for ageing M. salmoides was determined by comparing the accuracy and precision of otoliths and scales. Scales tended to underestimate the age of fish older than five years. Sectioned sagittal otoliths were the more precise structures for ageing (otoliths CV = 15.8 vs. scales CV = 21.9). The periodicity of growth zone formation was validated as annual for otoliths using both edge analysis (EA), and mark recapture of chemically tagged fish (MRCT). EA indicated one annual peak in the frequency of opaque margins between September and January using a periodic logistic regression and a binomial model linked with a von Mises distribution for circular data. MRCT showed the linear relationship between time at liberty and number of growth zones distal to the fluorescent band was not significantly different from one (slope = 0.89). Reproduction was similar to that in native and non-native populations with fish reaching age at 50% maturity at ca. two years, and length at 50% maturity at 259-290 mm FL depending on growth rate. Spawning season occurred in the spring months of August to October. The Wriggleswade Dam population reached similar ages (14 yrs) to populations in temperate North America. Growth was described using the von Bertalanffy growth equations of (Lt = 420(1-ᵉ⁻°·³³⁽ᵗ⁺°·²¹⁾) mm FL in Wriggleswade and (Lt = 641(1-ᵉ⁻°·²²⁽ᵗ⁺°·⁷⁶⁾) mm FL in Mankazana. Growth performance of both populations, described using the phi prime index, seemed to be correlated with temperature and the Wriggleswade Dam population (Φ’ = 2.8) grew similarly to those native temperate North American populations and the non-native populations of Japan and Italy. The Mankazana population had a higher growth performance (Φ’ = 2.9) compared to Wriggleswade and growth was comparable to other nonnative African populations. Both populations utilised all available food resources, with the Mankazana population being in better condition than the Wriggleswade population as a result of a more diverse diet, highly abundant food sources throughout the year, and potentially the adoption of a more conservative ambush feeding strategy. The Wriggleswade population, which was utilised by competitive anglers, showed low mortality rates (Z = 0.43 yr⁻¹), and translocated fish dispersed from the common release site, travelling an average distance of 4km over the study time of 494 days. These results indicated that M. salmoides are successful in these environments, growing at expected temperature dependant rates, maturing at two years, using all available food groups, and suffering from low mortality. It is therefore likely that they will persist in South Africa and establish where introduced.

The purpose of this research was to investigate the level of food safety knowledge, attitudes and food handling practices of employees in hospitals in the Capricorn District Municipality (CDM), Limpopo Province, South Africa. Purposeful sampling was followed to sample 210 respondents from nine hospitals in CDM. Respondents were individuals who are 18 years or more, employed in these hospitals and are involved in the food handling duties. Data collection was done by means of questionnaires and interviews. The results showed that 99% and 70% of the food handlers are black females and are health care staffs. Up to 71% have not attended any food safety-training course. Many food handlers are not knowledgeable about HACCP and the correct temperature and duration for receiving and storing temperature controlled for safety (TCS) foods respectively. The vast majority of food handlers are not knowledgeable on minimum internal cooking temperature for poultry, seafood, egg and the best way of thawing of frozen meat. The majority of food handlers do not know that Salmonella is the main foodborne bacteria pathogen mostly associated with poultry products and that food borne bacteria will grow quickly in food at a temperature of 37 ˚C. The majority of food handlers possess adequate food safety knowledge regarding the safe food handling practices and the prevention of contamination. Respondents with higher academic qualifications do not possess more food safety knowledge than those with lower academic qualifications. Food handlers who are health care staff have less food safety knowledge when compared to food service managers, food service supervisors and chefs. / Business Management / M.A. (Consumer Science)

The Blyde Canyon Nature reserve displays its natural beauty for most National and International visitors all over the World. The region is renowned for its high rainfall and misty weather, which enhances the natural beauty of the area. Because of the mist belt effect, the area is one of the largest commercial forestry areas in South Africa. Baboons also seek after the topography and vegetation type (Northeastern mountain sourveld) that is typical of this area and numerous baboon troops occur in this region. This combination is often the cause of conflict between baboons and humans. The need arise for these baboons to be studied and managed as a component of this very important ecosystem. The main aims of the study were firstly to identify a natural ranging baboon troop, to habituate them and gather data regarding home range sizes, troop sizes, densities and seasonal food selection and secondly to give a detailed habitat description and vegetation map of the troop's home range. The baboon activity data was collected in 15-minute intervals over a one year period on a troop at Bourke's Luck. This included all activities such as walking, social, foraging, and resting. The food parts selected as well as the species foraged on was identified. Numerous statistical methods were used on the baboon data such as; the Shapiro Wilk test, Spearman rank-order correlation, ANOVA, and the Kolmogarov-Smirnov two sample test. There was a positive correlation between home range areas and troop sizes and the baboons preferred certain habitats above others during different seasons. To give a detailed habitat description of the troop's home range, 50 sample plots was stratified-randomly distributed in order to include all the different stratification units. a TWINSPAN classification, refined by Braun-Blanquet procedures was carried out on the Bourke's Luck section that included the baboons home range. 13 Plant communities, which can be grouped into 7 major community types were identified. This study resulted in the ecological interpretation of baboon activities related to the ecological interpretation of the vegetation in the baboon troop's home range. / Agriculture, Animal Health and Human Ecology / M.Tech. (Nature Conservation)