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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.
51

Gastrointestinal toxicity of carrageenan in the newborn guinea pig

Nyman, David William January 1981 (has links)
No description available.
52

A model of consumers' perceptions of food additives and consequent purchasing behaviour / Emmerentia Gertruida Dicks

Dicks, Emmerentia Gertruida January 2007 (has links)
The primary objective of this study was to apply the Elaboration Likelihood Model of persuasive communication to consumers' perceptions of food additive labelling. The model was used to explain how consumer information processing influences consumers' decision-making and consequent purchasing behaviour with regard to food products that contain food additives. To date, few studies have explained consumers' perceptions, viewpoints and understanding of additive labelling, or of their related purchasing behaviour. However, the increased marketing of processed foods containing additives and the concern expressed by consumers regarding the risks of additives call for the development of a theoretical basis for research into these issues. There is currently a lack of such data in South Africa. This study was conducted from a phenomenological qualitative approach with a descriptive exploratory nature. Eight focus group sessions with 39 food additive label readers were held in the Vanderbijlpark-Vereeniging area. A content analysis of the focus group discussions resulted in the categorising of concepts, and 33 subtle underlying themes were identified. The main findings of the study were that the participants' general perceptions suggested that food additives can be defined as unnatural chemical substances that are added to food and that hold some benefits and/or risks to the consumer. The participants' use of food additive information was influenced by the situational factors associated with each individual participant. Moreover, the participants were more aware of tartrazine, MSG and aspartame than of any other food additive. Participants were also confronted with various blocking mechanisms when searching for and selecting food products containing additives. These included a lack of standardisation of terminology, illegible ingredient listing, a lack of food control and regulation, information overload, incomprehensible information, manufacturers' dishonesty, time constraints and incorrect, untrustworthy, insufficient information. On the other hand, participants used various coping or risk-reducing strategies to reduce their concerns. In order to interpret the results, the Elaboration Likelihood Model of persuasive communication was adapted and applied to food additive labels. The adapted model illustrates how the consumers' perceptions of additive labels and their search for additional information influence their purchasing behaviour to varying extents. It is recommended that more attention be given to consumer education with regard to additive-related terminology used on food labels and that the results be put to use in the current revision of labelling regulations. Marketers and retailers could use the information to better understand the behaviour of consumers who read food additive labels. The value of this study was to show that consumers' prior perceptions of food additives are an important determinant of their purchasing behaviour, / Thesis (Ph.D. (Consumer Science))--North-West University, Potchefstroom Campus, 2008.
53

Darbuotojų, dirbančių X prekybos centre, požiūris į genetiškai modifikuotų maisto produktų ir maisto priedų vartojimą / The approach of the workers at x supermarket to the consumption of genetically modified food and its additives

Klimaitė, Vaida 05 June 2013 (has links)
Darbo tikslas. Įvertinti darbuotojų požiūrį į genetiškai modifikuotų maisto produktų ir maisto priedų vartojimą. Darbo uždaviniai: 1. Nustatyti darbuotojų požiūrį į genetiškai modifikuotus maisto produktus. 2. Nustatyti darbuotojų požiūrį į maisto priedus. 3. Įvertinti pagrindinius veiksnius sąlygojančius maisto produktų pasirinkimą. Tyrimo metodika. Tyrimo metu buvo išdalinta 190 anketų. Gauta užpildyta 160 anketų. Atsakymo į anketos klausimus dažnis – 84,2 proc. Apklausos duomenys analizuoti naudojant SPSS 15.0 „for Windows“ programinį paketą bei MS Exel lenteles. Hipotezės tikrintos taikant df ir χ² testus, nustačius reikšmingumo lygį p<0,05. Rezultatai. Didesnė dalis apklaustųjų neigiamai vertina GM maisto produktus, taip nurodė 56,9 proc. 56,2 proc. moterų ir 70,0 proc. vyrų, mano, kad GM maisto produktai yra kenksmingi. GM maisto produktus vartoja 20,0 proc. apklaustųjų moterų ir 30,0 proc. vyrų. Maisto priedus neigiamai vertina 35,0 proc. apklaustųjų, tačiau 91,9 proc. respondentų perka maisto produktus, kurių sudėtyje yra maisto priedų. Informacijos apie maisto priedus, darbo vietoje norėtų gauti 50,5 proc. moterų ir 60,0 proc. vyrų. Kad maisto priedai yra kenksmingi ir gali turėti neigiamą poveikį žmogaus sveikatai, mano 56,1 proc. respondentų. Išvados. 1. Genetiškai modifikuotus maisto produktus vartoja įvairaus amžiaus, išsilavinimo ir skirtingas pajamas gaunantys respondentai. Vyresni respondentai dažniau GM maisto produktus vertina neigiamai: iki 35 metų - 44... [toliau žr. visą tekstą] / The aim of the work. To assess the employees’ attitude to the consumption of the genetically modified products and food additives. The goals of the work. 1. To determine the approach of the employees to the genetically modified products. 2. To determine the approach of the employees to food additives. 3. To assess the main factors which determine the choice of the food products. The methodology of the research. 190 questionnaires were distributed during the research. 160 questionnaires were completed. The data of the survey were analyzed by using the software package SPSS 15.0 “for Windows”. Hypotheses were checked by applying for the df and χ2 tests, and the appointed significance level is p<0,05. The results. 56,9 % of the respondents negatively assesses genetically modified products. 56,2 % of the questioned women and 70,0 % of the questioned men think that GM food is harmful. GM food is used by the 20,0 % of the questioned women and the 30,0 % of the questioned men. The food additives are assessed negatively by the 35,0 % of respondents, but 91,9 % of the questioned buy the products with the additives. 50,5 % of women and 60,0 % of men would like to get the information about the food additives at their workplace. 56,1 % of the respondents think that food additives are harmful and could have a negative influence on the person’s health. Conclusions: 1. Genetically modified productsare used by the respondents of different age, education and having the... [to full text]
54

Effect of fat mimetics on the headspace release of five strawberry flavor compounds

Lin, Ting-Ning. January 2007 (has links)
Thesis (M.S.)--University of Missouri-Columbia, 2007. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on January 4, 2008 Includes bibliographical references.
55

Guar and locust bean gums as partial replacers of all-purpose flour in bread : an objective and sensory evaluation /

Schwarzlaff, Sabine Susanne, January 1993 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1993. / Includes bibliographical references (leaves 84-91). Also available via the Internet.
56

Analysis of di(2-ethylhexyl) phthalate in polyvinyl chloride and monosodium glutamate in foodstuff using high performance liquid chromatography and the investigation of microwave digestion method for paint analysis /

Tang, Shin-kwan, Andrew. January 1989 (has links)
Thesis (M. Phil.)--University of Hong Kong, 1990.
57

Protein digestion, the protein requirement in nutrition, and food additives the contribution of Russell H. Chittenden.

Schelar, Virginia Mae, Chittenden, R. H. January 1900 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1969. / Vita. Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
58

Effects of soluble polylactic acid and gamma irradiation on ground beef inoculated with Escherichia coli O157:H7 and legal classification of irradiation as a food additive /

Wilson, Thomas P. January 1998 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 1998. / Typescript. Vita. Includes bibliographical references (leaves 77-86). Also available on the Internet.
59

Effects of soluble polylactic acid and gamma irradiation on ground beef inoculated with Escherichia coli O157:H7 and legal classification of irradiation as a food additive

Wilson, Thomas P. January 1998 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 1998. / Typescript. Vita. Includes bibliographical references (leaves 77-86). Also available on the Internet.
60

Monoclonal antibody-based sandwich ELISA for the detection of ovine muscle in cooked meat

Liu, Lihua. Hsieh, Yun-Hwa Peggy. January 2006 (has links)
Thesis (M.S.)--Florida State University, 2006. / Advisor: Yun-Hwa Peggy Hsieh, Florida State University, College of Human Sciences, Dept. of Nutrition, Food and Exercise Sciences. Title and description from dissertation home page (viewed Sept. 19, 2006). Document formatted into pages; contains viii, 75 pages. Includes bibliographical references.

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