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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.
1

Studies on the proteins of cocoa beans

Zak, Dennis Louie, January 1973 (has links) (PDF)
Thesis (Ph. D.)--Pennsylvania State University, 1973. / Includes bibliographical references.
2

A study of the tocopherols in the unsaponifiable fraction of cocoa lipids

Erickson, Jerauld A. January 1972 (has links) (PDF)
Thesis (M.S.)--Pennsylvania State University, 1972. / Includes bibliographical references.
3

A study of the isolation, fractionation and chemical composition of Brazilian comun cacao proteins

Timbie, Douglas James. January 1975 (has links) (PDF)
Thesis (M. S.)--Pennsylvania State University, 1975. / Includes bibliographical references.
4

A study of the phospholipids of cocoa beans by two-dimensional thin-layer chromatography

Parsons, John G. January 1968 (has links) (PDF)
Thesis (Ph. D.)--Pennsylvania State University, 1968. / Includes bibliographical references.
5

Isolation and characterization of microorganisms involved in the fermentation of Trinidad's cacao beans

Ostovar, Kurosh, January 1971 (has links) (PDF)
Thesis (Ph. D.)--Pennsylvania State University, 1971. / Includes bibliographical references.
6

A study of the starch of cocoa beans and chocolate products

Schmieder, Robert Leonard. January 1900 (has links) (PDF)
Thesis (M. S.)--Pennsylvania State University, 1976. / Includes bibliographical references.
7

Strategies to Obtain Certification for Cocoa Bean Production

Opoku, Emmanuel Adem 01 January 2019 (has links)
Leading cocoa-consuming countries have declared that in the year 2020, they will permit imports of sustainably sourced cocoa beans only, threatening the sustainability of the cocoa farming business. Certification offers enhanced market access for sustainability of the business of cocoa bean producers in Ghana. The purpose of this case study was to explore the strategies that farm managers used to obtain certification for cocoa bean production. Seven farm managers of a cocoa producer's cooperative located in the eastern region of Ghana who consistently produced certified cocoa beans for at least 5 years participated in the study. Deming's quality management theory served as the conceptual framework for this study. Semistructured interviews constituted the primary technique for data collection. Additional data from UTZ-certified documents and the archives of the cooperative supported the process of achieving data saturation. Data were analyzed using Bengtsson's manifest content analysis framework of decontextualization, recontextualization, categorization, and compilation to arrive at conclusions. Three themes emerged from data analysis: training in farming practices and certification code of conduct, management discipline, and environmental and social sustainability. The implications of this study for social change include the potential that certification might influence a positive change in the farming practices of Ghanaian cocoa farm managers. Social change might be reflected in the adoption of sustainable production practices, improved living conditions of producers, and biodiversity conservation.
8

High performance liquid chromatographic determination of (-)-epicathechin in cocoa beans and the effects of varietal types, curing, and roasting on its concentration

Kim, Henry. January 1982 (has links) (PDF)
Thesis (Ph. D.)--Pennsylvania State University, 1982. / Includes bibliographical references.
9

A study of the carbohydrates of cocoa beans by gas chromatography

Andersen, David A. January 1968 (has links) (PDF)
Thesis (Ph. D.)--Pennsylvania State University, 1968. / Includes bibliographical references.
10

Vývoj metody pro stanovení kvalitativních ukazatelů kakaového prášku / Development of method for determination of qualitative parameters of cocoa powder

Vránová, Petra January 2019 (has links)
The theoretical part of the master’s thesis is focused on a brief botanical characterization of the cacao tree and its most famous varieties discussed. Furthermore, the chemical composition of cocoa beans is described with an emphasis on theobromine and caffeine. There is also mention of the cocoa beans the cocoa bean processing technology for cocoa liquor and cocoa powder, which are then used in food industry. Additionally there is a shorta short description of the legal requirements relating to cocoa. In this part are also two chapters are devoted to the description of instrumentation of high performance liquid chromatography (HPLC) and inductively coupled plasma optical emission spectrometry (ICP-OES). The experimental part deals with analyzes of cocoa powder, cocoa beans, cocoa liquor and waste cocoa beans sold as a "tea mixture". A total of 10 legislation-recommended parameters have been identified in the listed raw materials, such as caffeine, theobromine and sucrose, heavy metal and potassium, fat content etc. The highest content of theobromine was determined in cocoa powder 178.363 mgl-1, caffeine in cocoa beans 16.096 mgl-1. All samples analyzed contained a little amount of sucrose as expected, the highest concentration was found in the tea mixture samples in both the water: ethanol sample of 84.069 mgl-1, and the sample solution in water of 65.897 mgl-1.

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