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Die effek van verskillende onderrigmetodes in die aanbieding van 'n behuisingsgeletterdheidsprogramVan der Merwe, Marietjie 12 1900 (has links)
Dissertation (Master of Consumer Science)--University of Stellenbosch, 2000. / ENGLISH ABSTRACT: The role which education can play in the upliftment of individuals and families has been receiving
increasing attention by the South African government because it is regarded as each individual's
right to reach his/her full potential. However, the way in which education is presented is the defining
factor, which determines the sustainability of the subsequent development. The purpose of the
study was to determine how Consumer scientists could contribute to transformative learning as well
as the increasing of individual's levels of empowerment and knowledge.
A literature study was undertaken to present a synopsis of emancipation education and transformative
learning within the context of Consumer Science. Several methods of education, the underlying
concepts to transformative learning, methods to bring about transformative learning, several phases
in transformation of perspectives, the outcomes of the emancipation education method, the role of
the Consumer scientist as emancipation educator as well as practical teaching methods were also
included to support the empirical part of the study.
A housing literacy programme was adapted and presented according to two different methods of
education, namely emancipation and technical methods to represent the empirical part of this study.
The housing literacy programme was presented to women in Calvinia and Williston living in government
subsidised houses. During the implementation of the emancipation method of education,
the transformation framework was used in conjunction with the action research model to adapt the
programme and to identify any transformation that took place. In experimental design, the emancipation
and technical methods were compared in terms of an increase in empowerment and knowledge.
The status of empowerment and knowledge of both groups was determined before the programme,
directly after the programme as well as two months thereafter.
Quantitative data was obtained from the questionnaires on empowerment and knowledge, while
qualitative data was obtained from the action research model as well as the transformation framework.
The result of the quantitative data showed a clear difference between the group taught with
the emancipatory method, and the group taught with the technical method in tenus of the increase in
levels of empowerment and knowledge. The group taught with the emancipatory method showed
higher levels of empowerment and knowledge than the group taught with the technical method directly
after the programme as well as two months thereafter. The levels of empowerment and knowledge of the group taught with the emancipatory method showed significant statistical differences
from before the presentation of the programme until two months thereafter. This suggests the
sustainable character of an increase in empowerment and knowledge. Results obtained from the
qualitative data also indicated the occurrence of distorted meaning schemes as well as modification
thereof.
This study showed that using the emancipation method of education when presenting a Consumer
Science programme could induce transformation. The quantitative data also proved the emancipation
method of education to be more effective than the technical method when aiming to increase an
individual's level of empowerment and knowledge. It is therefore important that Consumer scientists
be aware of all the characteristics of the emancipation method of education as well as transformative
learning in order to induce change in individuals and families and to lead them to selfdependence. / AFRIKAANSE OPSOMMING: Die rol wat onderwys in die opheffing van individue en gesinne kan speel, het die afgelope paar
jaar toenemende aandag van die Regering van Suid-Afrika gekryaangesien dit as elke individu se
reg gesien word om sy/haar volle potensiaal te bereik. Die wyse waarop onderwys aangebied
word, is egter die bepalende faktor in die volhoubaarheid van die ontwikkeling wat daardeur
teweeggebring word. Die doel van die studie was daarom om te bepaal hoe
Verbruikerswetenskaplikes kan bydra tot transformatiewe leer en die verhoging van bemagtigingsen
kennisvlakke van individue.
'n Literatuurstudie is onderneem om 'n oorsig oor emansipasie opvoeding en transformatiewe leer
binne die konteks van Verbruikerswetenskap te gee. Verskeie onderrigmetodes, die konsepte
onderliggend aan transformatiewe leer, metodes om transformatiewe leer te bewerkstellig, verskeie
fases in perspektieftransformasie, die uitkomste van die emansipasie onderrigmetode, die rol van
die Verbruikerswetenskaplike as emansipasie opvoeder en praktiese onderrigtegnieke is bestudeer
om die empiriese gedeelte van die studie te ondersteun.
Vir die empinese gedeelte van die studie is 'n behuisingsgeletterdheidsprogram aangepas en
volgens twee verskillende opvoedingsmetodes, naamlik die emansipasie- en tegniese metode
aangebied. Die behuisingsgeletterdheidsprogram is aangebied aan vroue van Calvinia en Williston
wat in staatsgesubsidieerde huise woon. Met die toepas van die emansipasie opvoedingsmetode is
die transformasieraamwerk saam met die aksienavorsingsmodel aangewend om die program aan te
pas en die transformasie wat voorgekom het te identifiseer. In die eksperimentele ontwerp is die
emansipasie en tegniese metodes met mekaar vergelyk in terme van bemagtiging- en
kennisverhoging. Bemagtiging- en kennisstatus van albei groepe is voor die program, direk na die
program, sowel as twee maande daarna bepaal.
Kwalitatiewe data is uit die aksienavorsingsmodel en die transformasieraamwerk verkry, terwyl
kwantitatiewe data uit die bemagtigings- en kennisvraelyste verkry is. Die resultate van die
kwantitatiewe data het aangedui dat daar wel 'n verskil is ten opsigte van die verhoging van
bemagtiging- en kennisvlakke tussen dié groep wat volgens die emansipasie metode aangebied is en dié groep wat volgens die tegniese metode aangebied is. Die groep wat volgens die emansipasie
metode onderrig is se totale bemagtigingsvlak, sowel as hul kennisvlak was direk na die program
asook twee maande daarna hoër as dié van die groep wat volgens die tegniese metode aangebied is.
By die bemagtiging- en kennisvlak van die groep wat volgens die emansipasie metode onderrig is,
het daar 'n betekenisvolle statistiese verskil van voor die programaanbieding tot twee maande
daarna voorgekom, wat op die volgehoue aard van bemagtiging- en kennisverhoging dui. Die
resultate wat verkry is uit die kwalitatiewe data het verder aangetoon dat daar wel verdraaide
betekenisskemas by die deelnemers voorgekom het asook wysiging daarvan.
Tydens hierdie studie is bevind dat transformatiewe leer teweeggebring kan word met die aanbied
van 'n Verbruikerswetenskapprogram volgens die emansipasie opvoedingsmetode. Die
kwantitatiewe data wat verkry is, het ook getoon dat die emansipasie onderrigmetode meer
effektief as die tegniese metode is om die verhoging van individue se bemagtiging- en
kennisvlakke teweeg te bring. Verbruikerswetenskaplikes moet daarom kennis dra van die
eienskappe van die emansipasie opvoedingsmetode en transformatiewe leer om sodoende
volgehoue verandering by individue en gesinne teweeg te bring en om hul tot selfstandigheid te lei.
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A post-occupancy evaluation of the Hope City Housing Complex of the Greater Middelburg Housing Association, MpumalangaMoja, Bontlefeela 03 1900 (has links)
Thesis (M Cosumer Science)--Stellenbosch University, 2004. / ENGLISH ABSTRACT: The Housing White Paper (Department of Housing, 1994: 12) sets out the government's broad
housing policy and the seven strategies undertaken in the implementation of the policy. One of
the strategies is the mobilisation of housing credit through the establishment of the Social
Housing Foundation (SHF). The SHF provides training, advice, and support to emerging and
established social housing institutions. These housing institutions deliver high density
subsidised rental or installment sale housing to the beneficiaries of the State housing subsidy
scheme. The Greater Middelburg Housing Association (GMHA) is an example of such an
institution. Social housing in South Africa aims at addressing the broader quality of life of their residents,
beyond the physical dwelling in which they reside. Furthermore, the aim is to build rental
housing, which adheres to suitable quality standards, and is located close to economic
opportunities and amenities (Crofton & Venter, 2000:7). To determine the satisfaction levels
experienced by residents with regard to different aspects of their housing situation, a Post-
Occupancy Evaluation survey can be used to determine whether the objectives of the social
housing institution have been met by the housing provided. The main objective of this research study was to determine the level of housing satisfaction
experienced by residents of the Greater Middelburg Housing Association's Hope City Housing
Complex. The secondary objectives of the study were derived from the main objective and
were, firstly, to determine the residents' socio-demographic and socio-economic profiles, and
secondly to determine the residents' satisfaction levels with regard to the housing unit, the
housing complex and the management of the housing project. Thirdly the residents' overall
satisfaction with their housing situation, were determined, and lastly recommendations were
made for future developments and improvements of the Hope City Housing Complex. To
achieve these objectives, a post-occupancy evaluation study was conducted among a randomly
selected sample of 150 tenants residing in the complex. Data were obtained through a structured questionnaire, which entailed dichotomous, multiple
choice, scaled, matrix-type and open-ended questions. The scaled questions were answered on
a four-point scale, where the tenants' opinions on certain aspects of the housing unit, complex
and management, were rated. The questionnaire was administered during individual interviews
of 40 minutes each, with the head or the spouse of the head of the selected households. A
document-study of the GMHA was conducted to gain insight into the organisation's
background, aims and goals. The research results on the socio-demographic and socio-economic profile of the respondents
indicated that the target market of the housing institution was mostly couples, between the ages
of 21 and 40 years, who had dependants. The majority of the respondents indicated that they
would prefer to own housing at this stage of their lives, but that they are satisfied with renting
until they have the financial means to buy property. Most respondents had achieved grade 12
schooling and were formally employed, earning monthly household incomes between R2 000
and R3 500. Few respondents reported that they were saving regularly, and only a small
number of tenants had been in arrears with their rental payment. The results indicated that the respondents were satisfied with their overall housing situation, but
had complaints about specific aspects of the housing unit, the complex and the management.
Statistically a negative correlation was found between the satisfaction levels with the unit,
complex and management indicators and overall housing satisfaction. Concerning the unit, the respondents felt that the units, and especially the bedrooms, were too
small. They felt that the complex did not provide facilities that are needed by the residents,
such as play areas for children and a convenience store. Respondents were also dissatisfied
with the way in which tenants, who have defaulted on their rental payments, were treated by
management. Furthermore, respondents were dissatisfied with the relationship between the
management of the housing complex and the residents. The main reason for their dissatisfaction
was management's low response rate to maintenance complaints. The GMHA should encourage the tenants to attend the Tenant Training Programmes run by the
management. These programmes should outline the responsibilities of the management and the
responsibilities of the residents with regard to the maintenance of the housing units. The
GMHA should also look into providing the installment sale option as a tenure option to the
residents, as this would enable those tenants, who would like to buy property, to do so. / AFRIKAANSE OPSOMMING: Die Behuising Witskrif (Department of Housing, 1994: 12) stel die regering se breë
behuisingsbeleid en die sewe strategieë wat onderneem is in die implementering van die beleid.
Een van die strategieë is die mobilisering van behuisingkrediet, deur die totstandkoming van
die Social Housing Foundation (SHF). Die SHF lewer opleiding, advies en ondersteuning aan
nuwe en gevestigde sosiale behuisingsinstansies. Hierdie behuisingsinisiatiewe lewer hoëdigtheid
gesubsideerde huur- of termyn-betalingbehuising aan die begunstigdes van die
Staatsbehuisingsubsidieskema. Die Greater Middelburg Housing Association (GMHA) is 'n
voorbeeld van so 'n instansie. Sosiale behuising in Suid-Afrika het ten doel om die meer omvattende lewenskwaliteit van die
inwoners, wyer as bloot die behuisingstruktuur wat bewoon word, aan te spreek. Verder is die
doel om huur-behuisingstrukture te bou, wat voldoen aan bepaalde kwaliteitstandaarde en wat
nie te ver van ekonomiese bedrywighede en geriewe geleë is nie (Crofton & Venter, 2000:7).
Om die inwoners se vlakke van tevredenheid met verskillende aspekte van hul behuising te
bepaal, kan 'n na-ingebruiknemingsevalueringopname gebruik word, om te bepaal of die
doelstellings van die sosiale behuisingsinstansies bereik word, deur die behuising wat
beskikbaar gestel word. Die hoofdoelstelling van dié navorsingstudie was die bepaling van die verskillende vlakke van
behuisingstevredenheid, soos dit ervaar word deur die inwoners wat in die Greater Middelburg
Housing Association se Hope City behuisingskompleks woon. Die sekondêre doelstellings van
die studie het voortgespruit uit die hoofdoelstelling en is eerstens die samestelling van die
inwoners se sosio-demografiese en sosio-ekonomiese profiele, tweedens die bepaling van die
inwoners se vlakke van behuisingstevredenheid ten opsigte van die behuisingseenhede, die
behuisingskompleks en die bestuur van die behuisingsprojek. Derdens is die respondente se
totale tevredenheid met hul behuisingsituasie bepaal, waarna aanbevelings vir verdere
ontwikkelinge en verbeteringe aan die Hope City Behuisingskompleks gemaak word. Om hierdie doelwitte te bereik, is 'n na-ingebruiknemingsevalueringstudie onderneem waaraan 'n
ewekansige steekproefvan 150 inwoners, wie woonagtig is in die kompleks, deelgeneem het.
Data is bekom deur gebruik te maak van 'n gestruktureerde vraelys wat digotome, multi-keuse,
geskaleerde, matriks-tipe en oop vrae bevat het. Die geskaleerde vrae bestaan uit 'n vierpuntskaal,
waarvolgens die inwoner se opinie oor sekere aspekte van die behuisingseenheid, die
kompleks en die bestuur bepaal/gemeet is. Die vraelys is tydens individuele onderhoude, van
40 minute elk, met die hoof, of die eggenoot van die hoof van die geselekteerde huishoudings,
voltooi. 'n Dokument analise van die besigheidsplan van die GMHA is onderneem om insig te
verkry in die organisasie se agtergrond, mikpunte en doelstellings. Die navorsingsresultate met betrekking tot die sosio-demografiese en sosio-ekonomiese profiel
van die respondente, het aangedui dat die teikenmark van die GMHA hoofsaaklik pare in die
ouderdomsgroep 21-40 jaar, wie afhanklikes het, is. Die meerderheid van die respondente het
aangedui dat hulle op hierdie stadium van hul lewens verkies om 'n behuisingeenheid te besit,
maar dat hulle tevrede is om te huur todat hulle finansieel in staat is om 'n huis te koop. Meeste
respondente het graad 12-skoolopleiding voltooi, en was werksaam in die formele sektor, met
maandelikse inkomstes van tussen R2 000 en R3 500. Baie min van die respondente het
aangedui dat hulle op gereelde basis spaar, en slegs enkele huurders was al agterstallig in die
betaling van hul huurgeld. Die resultate van die navorsing het aangedui dat die respondente tevrede was met hul
behuisingsituasie in die algemeen, maar dat hulle klagtes gehad het oor spesifieke aspekte van
die behuisingseenheid, die kompleks en die bestuur daarvan. Statisties is 'n negatiewe
korrelasie gevind tussen die tevredenheidsvlakke met die eenheid-, kompleks- en
bestuursindikatore en tevredenheid met die behuisingsituasie in die algemeen.
Wat die eenheid betref, het die respondente gevoel dat die eenhede, veral die slaapkamers, te
klein was. Hulle het ook gevoel dat die kompleks nie voldoen aan die inwoners se behoefte aan
fasiliteite soos speelareas vir die kinders en 'n geriefswinkel nie. Respondente was verder
ontevrede met die manier waarop die bestuur van die kompleks mense, wie tydelik nie in staat was om hul huurgelde te betaal nie, behandel. Die respondente het hulle ongelukkigheid met
die verhouding tussen die inwoners en die bestuur geopper. Die hoofrede vir die
ontevredenheid was die bestuur se traagheid om te reageer op die instandhoudingsklagtes van
die inwoners.
Die GMHA moet die inwoners aanmoedig om die Inwoner Opleidingsprogramme, wat
aangebied word deur die bestuur, by te woon. Die programme behoort die
verantwoordelikhede van die inwoners en dié van die bestuur, met betrekking tot die
instandhouding van die behuisingseenhede, te verduidelik. Die GMHA moet dit oorweeg om
die termyn-verkoopsopsie aan inwoners beskikbaar te stel, aangesien dit die inwoners van
Hope City, wie graag eiendom sou wou koop, in staat sou stel om dit te doen.
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The quality attributes of South African rabbit meat and consumer attitudes towards itNkhabutlane, Pulane 03 1900 (has links)
Thesis (MA)--Stellenbosch University, 2004. / ENGLISH ABSTRACT: Meat processing industries in South Africa are faced with the challenge to produce a variety of white
meats. This is due to the fact that consumers tend to consume less red meat and more chicken and
pork that are perceived to be healthier due to the negative publicity surrounding red meat and health.
The nutritional emphasis is on leaner carcasses and an increase in the consumption of
polyunsaturated fatty acids while reducing the ratio of n-6:n-3 polyunsaturated fats in the diet. Another
way in which this can be achieved is through introducing rabbit meat which has low fat, low cholesterol
content and high protein content, while displaying a positive fatty acid profile. Carcass quality and
meat quality in rabbits may to a large extent be affected by age of slaughter and type of breed.
This study had a dual purpose. Firstly it aimed at quantifying the effects of breed and age on
parameters pertaining to carcass quality and meat quality of commercial rabbits, namely California
breed and hybrid (California x Dutch red). Secondly, to determine the differences between ethnic
groups on their perceptions towards rabbit meat, thereby providing information on its marketing
potential.
To accomplish the first objective 50 rabbits from the two breeds were housed in individual cages,
weighed on weekly basis and fed ad libitum. The rabbits were slaughtered at 9, 11, 13, 15 and 17
weeks of age (n=5 from each breed). For the second objective the perceptions of three ethnic groups
on factors affecting consumers' choice of rabbit meat were determined through a structured
questionnaire. The questionnaire was tested for validity beforehand.
There was no significant difference between the two breeds regarding body weight, feed intake,
carcass weight and drip loss. The California breed had a higher dressing percentage (53.7%) and
meat yield (29.2%) compared to the hybrid (52.5% and 27.5% respectively). Age treatments showed a
highly significant difference on all parameters investigated. Increasing the age proportionately
increased the amount of fat, while the moisture content decreased. The California breed exhibited
higher percentages of fat compared to the hybrid at all ages of treatment. California breed contained
more phosphorus, magnesium and zinc as opposed to the hybrid, the only exception being copper,
where the hybrid had higher concentrations.
The total fatty acid (169.2 mg/100 g) of the California breed was higher than that of the hybrid (133.5
mg/100 g). As a result there were more saturated fatty acids (55.4 mg/100 g) and monounsaturated
fatty acids (62.3 mg/100 g) in the California breed than in the hybrid (44.2 and 45.6 mg/100 g
respectively). Both breeds had 67% unsaturated fatty acids. Although there was no significant
difference between the P:S ratio of the two rabbit breeds, the values obtained were higher (+0.9) than
the value of 0.7. This is an indication that the rabbit meat contains a P:S ratio that could be considered
very desirable. The n-6:n-3 ratio for both breeds were high (11.6 for California and 12.7 for hybrid).
The cholesterol and amino acid profile of the two breeds were not affected by the type of breed.
The consumer survey indicated that 52% (n=158) of respondents had never eaten rabbit meat before
due to reasons such as scarcity, lack of knowledge about the meat, associating rabbits with pets and cultural constraints. Nevertheless, 57% of these people were optimistic about eating rabbit meat. In
addition, having eaten rabbit meat before seemed to contribute positively towards acceptance of rabbit
meat.
Generally, respondents preferred purchasing rabbit meat in portions as opposed to live or whole
carcasses. Their decision to purchase rabbit meat was firstly driven by price, thereafter freshness,
leanness and tenderness of meat. The respondents expect to buy rabbit meat at a price lower than
that of chicken.
Rabbit meat contained low sodium and high proportion polyunsaturated fatty acids-some of the most
important food attributes required to maintain and improve health. However, most of the respondents
in this study were not familiar with the positive attributes of rabbit meat and need to be taught the
benefits of this product. / AFRIKAANSE OPSOMMING: In Suid Afrika is daar 'n uitdaging vir die vleisproduserende voedselindustrieë om 'n verskeidenheid
witvleis te bemark. Dit word toegeskryf aan die feit dat verbruikers minder rooi vleis as hoender en
vark eet wat as meer gesond beskou word weens die negatiewe publisiteit wat geassosieer word met
rooivleis en gesondheid. Die voedingsfokus is op maerder karkasse, groter inname van polionversadigde
vetsure, en 'n vermindering in die verhouding n-6:n-3 poli-onversadigde vetsure in die
dieet. Een van die maniere waarop dit gedoen kan word, is die bekendstelling van konynvleis wat
gekenmerk word deur lae vetinhoud, lae cholesterolinhoud en 'n hoë proteïninhoud, en 'n positiewe
vetsuurprofiel. Karkas- en vleiskwaliteit van konyne word tot 'n groot mate geaffekteer deur ouderdom
van slagting en die ras.
Hierdie studie het 'n tweeledige doel. Eerstens mik dit na die kwantifisering van die effek van ras en
ouderdom op die parameters wat met karkas- en vleiskwaliteit van die Kaliforniese ras en die
kruisgeteëlde ras (Kaliforniese X Hollandse rooi) verband hou. Tweedens, om die verskille in etniese
groepe vas te stel met betrekking tot hulle persepsies van die faktore wat hulle keuse van konynvleis
beïnvloed, en op dié wyse inligting te verkry t.o.v die bemarkingspotensiaal daarvan.
Om in die eerste doelwit te slaag is 50 konyne van die twee rasse in individuele hokke gehuisves, op
'n weeklikse basis geweeg en ad libitum gevoer. Die konyne was geslag op 9, 11, 13, 15 en 17 weke
(n=5 vir elke ras). Vir die tweede doelwit, is die persepsies van drie etniese groepe oor die faktore wat
die verbruikerskeuse van konynvleis kan bepaal, m.b.v. 'n gestruktureerde vraelys bepaal. Die vraelys is
vooraf vir geldigheid evalueer.
Daar was geen beduidende verskil tussen die twee rasse wat betref liggaamsmassa, voedselinname,
karkasgewig en dripverlies nie. Die Kaliforniese ras het 'n hoër uitslag-persentasie (53.7%) en
vleisopbrengs (29,2%) in vergelyking met die kruisgeteëlde ras (52.5% en 27.5% respektiewelik)
gehad. Ouderdom het hoogsbeduidende verskille op al die parameters wat ondersoek was, getoon.
Die toename in ouderdom was gepaardgaande met proporsionele toename in karkasvet en afname in
vog. Die Kaliforniese ras het, by alle ouderdomsbehandelings, in vergelyking met die kruisgeteëlde
ras, 'n hoër persentasie vet opgelewer. Die Kaliforniese ras het teenoor die kruisgeteëlde ras hoër
fosfor, magnesium en sink bevat. Die uitsondering was koper waar die kruisgeteëlde ras 'n hoër
waarde gehad het.
Die totale vetsure vir die Kaliforniese ras (169.2 mg/100 g) was hoër as vir die kruisgeteëlde ras
(133.5 mg/100 g). Om dié rede was daar in die Kaliforniese ras meer versadigde vetsure (55.4 mg/100
g) en monoonversadigde vetsure (62.3 mg/100 g) as vir die kruisgeteëlde ras (44.2 mg/100 g en 45.6
mg/100g onderskeidelik). Beide rasse het 67% onversadigde vetsure gehad. Hoewel daar geen
beduidende verskille was in die polionversadigde:versadigde (P:V) verhouding nie, was die waardes
hoër (+0.9) as die 0.7 wat aanbeveel word. Die n-6:n-3 verhouding vir beide rasse was hoog (11.6 vir
die Kaliforniese ras en 12.7 vir die kruisgeteëlde ras). Die cholesterol- en die aminosuurprofiel was nie
deur die ras beïnvloed nie. Die verbruikersnavorsing het getoon dat 52% (n=158) van die respondente om verskeie redes nog nie
konynvleis geëet het nie, weens redes soos onverkrygbaarheid, gebrekkige kennis van die vleis, die
assosiasie van konyne met troeteldiere en kulturele beperkinge. Desnieteenstaande is daar 57% van
die respondente wat optimisties is oor die eet van konynvleis. Die eet van konynvleis by vorige
geleenthede het bygedra tot die positiewe aanvaarding van konynvleis.
Oor die algemeen het die respondente verkies om konynvleis in porsies te koop, in plaas van
lewendig of heel karkasse. Die besluit om konynvleis te koop, is hoofsaaklik gedryf deur prys, daarna
deur varsheid, maerheid en sagtheid van die vleis. Die respondente verwag dat die prys vir
konynvleis laer sal wees as vir hoender.
Konynvleis bevat lae natrium en 'n hoë verhouding poli-onversadigde vetsure - van die mees
belangrike voedingeienskappe om gesondheid te handhaaf en te verbeter. Ongelukkig was meeste
van die respondente in hierdie studie nie vertroud met die positiewe eienskappe van konynvleis nie,
en moet hulle geleer word deur middel van omvattende bemarkingsaksies van die voordele van
hierdie produk.
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Utiliza??o de metodologias com consumidores para o desenvolvimento de bebida mista de rom? (Punica granatun L.) / Using of consumer methodologies for the development of mixed pomegranate beverage (Punica granatun L.)RODRIGUES, Felipe Reis 10 November 2016 (has links)
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2016 - Felipe Reis Rodrigues.pdf: 1603576 bytes, checksum: 3339dc514da1d070eb064b181fb06543 (MD5)
Previous issue date: 2016-11-10 / CNPq / The large number of new products that are developed and made available to the consumer has allowed access to industrialized food, which are sources of carbohydrates and saturated fats. The high consumption of this type of product in Brazil associated with the decreased physical activity, resulted in the epidemiological phenomenon known as nutritional transition, characterized by overweight and obesity. This trend is not only observed in Brazil, therefore the World Health Organization (WHO) recommends the reduction of sugar and fat consumption. From this scenario, this study aimed to develop a beverage of pomegranate as a healthier alternative to products available in the market. The pomegranate is a fruit with low use in Brazil; however, it presents nutritional characteristics that justify the increase in consumption. It was performed an online study to identify the fruit that would compose the mixed juice with pomegranate, and it has been suggested the orange. Then, it was evaluated the beverages intention to purchase. The blend of orange and pomegranate reached the highest average score for such as parameter by consumers, and the sugar content reached the highest relative importance. In a second phase of the study it was evaluated the formulations by varying the ratio water/pulp, pomegranate/orange and sugar content. The most preferred sample had a lower proportion of pomegranate pulp, higher orange content and sugar. The following study has focused on the replacement of sucrose by high intensity sweeteners (sucralose, stevia and monk fruit extract) were evaluated. Firstly it was estimated the sweetness equivalence for each of them using two different methods (paired comparison and magnitude estimation), and two ways of data analyses (logistic regression and survival analysis). The methods provided similar results, but the survival analysis showed a better alternative for the data analysis. From this result it was investigated the effect of information on the sweetener used on the perception of the product. It was considered the effect of extrinsic variables, namely: design (traditional vs. minimalist), nutritional information (present vs. absent), processing information technology (present vs. absent) and nutritional traffic light (present vs. absent) on the consumer intention to purchase, considering the time constraint as a variable in the study. The time factor did not affect the purchase intent and the highest averages were achieved by packaging with traditional design, which was used in the subsequent study. The study investigated the effects of the information on the additive used to sweeten beverages (sweetener: sucralose, stevia or extract of monk fruit; or sucrose: sugar or no added sugar) on the acceptance, sensory characteristics and wellbeing associated with the beverages. The information was significant on the sensory description of the samples, wellbeing associated to the products and acceptance. Results have shown that samples with the most similar characteristics to the beverage sweetened with sugar were those that achieved the highest acceptance means. The findings achieved in the several studies carried out in this Thesis can be considered relevantto the development of healthier products, which include pomegranate in its composition. / O grande n?mero de novos produtos que s?o desenvolvidos e colocados ? disposi??o do consumidor vem permitindo o acesso aos alimentos industrializados fontes de carboidratos e gorduras saturadas. No Brasil o elevado consumo desse tipo de produto, associado ? diminui??o da pr?tica de atividade f?sica, resultou no fen?meno epidemiol?gico conhecido como transi??o nutricional caracterizado pelo sobrepeso e obesidade. Essa tend?ncia n?o se restringe apenas ao Brasil, por isso a Organiza??o Mundial de Sa?de (OMS) recomenda que o consumo a??car e de gordura seja reduzido. A partir deste cen?rio, o presente trabalho teve por objetivo desenvolver uma bebida ? base de rom? como alternativa mais saud?vel aos produtos encontrados atualmente no mercado. A rom? ? uma fruta com pouca utiliza??o no Brasil; por?m, apresenta caracter?sticas nutricionais que justificam o incremento do seu consumo. Foi realizado estudo on-line a fim de identificar a fruta que comporia o suco misto junto com a rom?, tendo sido identificada a laranja. Em seguida foi avaliada a inten??o de compra das bebidas a partir dos front-of-packs de prot?tipos de produtos mistos e de elaborados com apenas uma das frutas utilizadas na bebida mista (rom? e laranja). O suco misto alcan?ou maior m?dia quanto a esse par?metro, sendo o teor de a??car a caracter?stica com maior import?ncia relativa. No estudo subsequente foram avaliadas formula??es do produto variando-se a propor??o de ?gua/ polpa, rom?/ laranja e o teor de a??car. A amostra mais aceita pelos participantes continha menor propor??o de polpa de rom?, maior teor de laranja e a??car. Foram realizados estudos onde o foco foi a substitui??o da sacarose por edulcorantes de alta intensidade (sucralose, stevia e extrato da fruta do monge). Inicialmente foi estimada a equival?ncia de do?ura para cada um deles utilizando dois m?todos distintos (compara??o pareada e estima??o de magnitude) e duas formas de tratamento de dados (regress?o log?stica e an?lise de sobreviv?ncia). Os m?todos forneceram resultados similares; por?m, a an?lise de sobreviv?ncia se mostrou melhor alternativa para o tratamento de dados. A partir desse resultado foi investigado o efeito da informa??o sobre o edulcorante usado na percep??o do produto. Foi realizado estudo para avaliar o efeito de vari?veis extr?nsecas, a saber: design (tradicional vs. minimalista), informa??o nutricional (presente vs. ausente), informa??o da tecnologia de processamento (presente vs. ausente) e sem?foro nutricional (presente vs. ausente) na inten??o de compra do consumidor considerando a restri??o de tempo como vari?vel no estudo. O fator tempo n?o afetou a inten??o de compra e as maiores m?dias foram alcan?adas pelas embalagens com design tradicional, o qual foi utilizado no estudo subsequente que investigou o efeito da informa??o sobre o aditivo usado para ado?ar as bebidas (edulcorantes: sucralose, stevia ou extrato da fruta do monge; sacarose ou sem adi??o de a??car) na aceita??o, caracter?sticas sensoriais e no bem-estar associado a elas. A informa??o sobre o aditivo usado para ado?ar a bebida teve efeito (p>0,05) na descri??o sensorial das amostras, no bem-estar associado a elas e na aceita??o. Os resultados demonstraram que as amostras com as caracter?sticas mais parecidas com a bebida ado?ada com a??car foram as que alcan?aram maiores m?dias de aceita??o. Os achados encontrados a partir do desenvolvimento dos diversos estudos podem ser considerados relevantes para a elabora??o de produtos mais saud?veis, os quais incluem a rom? em sua composi??o.
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