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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.
101

The Health of the Ugandan Coffee Business Ecosystem

Garces Rivera, Marlen, Pfeiffer, Alexandra January 2018 (has links)
Aim - The aim of this thesis is to understand the challenges of the Ugandan coffee industry by having a business ecosystem perspective. By using a broader perspective like the BE, one can see relations and connections that may not have been visible before. Furthermore, when using a BE perspective more actors are included in the systemic work, and important platforms and tools are included in the work of moving the BE forward as one entity. Methodology - A qualitative study was conducted to examine and understand the Ugandan coffee industry from a business ecosystem perspective. 18 semi-structured interviews were performed with coffee farmers and coffee organizations in Uganda. The data was divided into five different themes; Knowledge Sharing in the Business Ecosystem, Platforms and Interactions in the Business Ecosystem, Roles in the Business Ecosystem, Challenges in the Business Ecosystem and Youth in the Business Ecosystem. Conclusions - The findings of the thesis are that some parts of the business ecosystem are missing or lacking. Effective platforms for knowledge sharing are an issue, due to lack of access to a technological platform, monetary resources and low level of education. It was difficult to place some of the actors in different roles that exist in the business ecosystem, because sometimes an actor could fit the description of multiple roles. The interactions and the knowledge sharing also need improvement. Research limitations - Due to the sheer size of any business ecosystem, it is a daunting task to map one out. To make it more manageable, a particular part of the business ecosystem was examined. This might have resulted in the exclusion of important actors. Many of the interviews required an interpreter which meant that some interpretations may have been lost in translation. Furthermore, all the interviews with coffee farmers were arranged by a third party. Which could affect the results. Research contribution – In this thesis a business ecosystem perspective was applied on the Ugandan coffee industry, which has never been done before. Furthermore, it discusses what an unhealthy or lacking business ecosystem is or looks like, since there is little or no previous literature discussing this.
102

Desenvolvimento de processo enzimatico para redução de sedimentos em extratos de cafe soluvel / Development of enzymatic process for sediments reduction in coffe extracts

Delgado, Paula Aparecida 05 September 2008 (has links)
Orientador: Telma Teixeira Franco / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica / Made available in DSpace on 2018-08-10T23:17:08Z (GMT). No. of bitstreams: 1 Delgado_PaulaAparecida_D.pdf: 2150542 bytes, checksum: 6d1fcc0446226d64e7f55a55da813d57 (MD5) Previous issue date: 2008 / Resumo: Polissacarídeos são os principais constituintes do café verde, torrado e solúvel, sendo principalmente galactomananos e arabinogalactanos. Um aspecto importante em relação a estes polissacarídeos é a insolubilidade, umas das possíveis razões para a formação de sedimentos na produção de café solúvel, reduzindo o rendimento do processo. Em face disto, o objetivo deste trabalho foi investigar a redução de sedimentos em extrato de café pela ação de enzimas. Diversas preparações comerciais de pectinases foram selecionadas e suas diferentes atividades determinadas. Rohapect B1L apresentou a maior atividade de mananase. Adicionalmente, a maioria das preparações estudadas apresentou outras atividades enzimáticas, tais como mananase, endoglucanase, xilanase, além da atividade atestada pelos fabricantes. Frações solúveis e insolúveis do extrato de café e sedimento foram preparadas e suas composições determinadas. Os principais componentes do extrato de café e sua fração insolúvel foram carboidratos e proteínas, enquanto que a fração insolúvel do sedimento apresentou também uma fração significativa de lignina. Pela análise dos carboidratos, galactose, arabinose e manose foram os principais monossacarídeos obtidos após hidrólise ácida, confirmando a presença de galactomananos e arabinogalactanos. Galactomanano com baixo grau de ramificação foi o principal polissacarídeo encontrado nas frações insolúveis. Biopectinase CCM, Rohapect B1L, Pectinase 444L e Galactomananase ACH foram as preparações enzimáticas mais eficientes na redução de sedimento do extrato de café, sendo Rohapect B1L e Galactomananase ACH as mais viáveis, cujas concentrações ótimas foram 0,3 e 0,1 mgproteína/gsubstrato, respectivamente. A massa molecular média dos components do extrato de café foi 18 kDa, a qual decresceu 6,6% após hidrólise com Rohapect B1L. O principal açúcar liberado por esta enzima foi a manose, sugerindo sua ação sobre as cadeias de mananos do café, devido a alta atividade de mananase. Os extratos hidrolisados pelas preparações enzimáticas Rohapect B1L e Galactomananase ACH foram avaliados sensorialmente. Provadores treinados verificaram uma pequena a moderada diferença entre os extratos hidrolisados e o controle; entretanto, o tratamento enzimático não alterou a aceitação das amostras por parte dos consumidores. Os resultados mostraram boas perspectivas para a utilização de enzimas no processo de redução de sedimentos em extratos de café solúvel / Abstract: Polysaccharides are the main components of green, roasted and soluble coffee, and they are mainly galactomannans and arabinogalactans. An important aspect about these polysaccharides is the insolubility, possibly one of the reasons for the sediments formation in the production of instant coffee, reducing the yield of the process. Thus, the aim of this work was to investigate the reduction of sediments in coffee extract by the action of enzymes. Several commercial preparations of pectinases were selected and their different activities were determined. Rohapect B1L presented the highest mannanase activity. Most of the commercial pectinases assayed presented other enzyme activities, like mannanase, endoglucanase, xylanase, besides the activity stated by the manufacturers. Soluble and insoluble fractions from coffee extract and sediment were prepared and their chemical composition determined. The main components of extract and its insoluble fraction were carbohydrates and proteins, while the insoluble fraction of sediment presented also a significant amount of lignin. Based on the carbohydrate analysis, galactose, arabinose and mannose were the main monosaccharides obtained after acid hydrolysis, confirming the presence of galactomannans and arabinogalactans. Galactomannan with low degree of branching was found to be the main polysaccharide of the insoluble fractions. Biopectinase CCM, Rohapect B1L, Pectinase 444L and Galactomannanase ACH were found to be themost effective enzyme preparations on the sediment reduction of coffee extract, being Rohapect B1L and Galactomannanase ACH the more viable ones, which optimumconcentrations were 0.3 and 0.1 mgprotein/gsubstrate, respectively. The average molecular weight of the coffee extract components was 18 kDa, which decreased 6.6% after hydrolysis with Rohapect B1L. The main sugar released by this enzyme preparation was mannose, suggesting its action on coffee mannans, due to the high activity of mannanase. The extracts hydrolyzed by Rohapect B1L and Galactomannanase ACH were evaluated for the sensory quality. Trained panelists indicated a small to moderate difference between the hydrolyzed extracts and the control; however, the enzymatic treatment did not alter the consumers¿ acceptance of the coffee extract. The results showed good perspectives for the use of enzymes in reducing sediments in coffee extracts / Doutorado / Desenvolvimento de Processos Químicos / Doutor em Engenharia Química
103

An Inquiry Into Micro Marketing Strategy as Implemented by the Coffee Industry: Is the Industry Fracturing the Market?

Edwards, Keith D 01 January 1990 (has links)
The diversity created in our society during the eighties has brought forth many new challenges for marketers. During that time established market segments subdivided themselves into micro segments. This has forced marketers to further target their marketing programs to reach the ever elusive consumer. Micro Marketing brings with it an abundance of product choices, especially in coffee. Currently, there exists a great deal of uncertainty as to the benefits of this wave of product proliferation. In this study, first, an attempt is made to identify and define Micro Marketing and the events which lead to its evolution. Substantial support is given which identifies the foundation of Micro Marketing as a natural extension of Market Segmentation. However, a review of current product offerings by the coffee industry may lead toward a return to product orientation. Which could imply further problems for a industry with flat or declining volumes. In order to access the condition of Micro Marketing, as it applies to the coffee industry, a questionnaire was developed. The primary information was gathered in grocery stores in the Jacksonville area. Data was gathered on the coffee drinking habits, brand awareness, brand loyalty, purchase influences, purchase patterns, psycographic and demographic data of consumers. This data is used to establish if any segments exist which identify with specific coffee brands. Market fracturing Consumers seems Jacksonville. show patterns to specific brands, evident, at least in hardly any segmentation while the level of brand awareness dissipates as the number of brands increase. Furthermore, the level of brand switching is extremely high indicating that market segmentation, for the most part, is non existent. Continuing to pursue market negative long term gains to the fracturing may provide firm due to its cost ineffectiveness. However, fracturing may be reversed with proper segmentation strategy. Further studies will indicate proper marketing strategies as well as provide possible avenues for growth in coffee consumption.
104

The development of an emotion lexicon for the coffee drinking experience

Bhumiratana, Natnicha January 1900 (has links)
Doctor of Philosophy / Department of Human Nutrition / Koushik Adhikari / Coffee is the most consumed beverage after water and the second widely traded commodity after crude oil. In the past decade or so the market for coffee has exploded. It is no longer competitive for the coffee industry to offer consumers just a ‘good’ cup of coffee. Coffee is mainly consumed for enjoyment and offers consumers the desirable emotional experience. Currently not much work has been done to capture the emotion experiences elicited by coffee drinking, which led to our objective: to identify and assess the feelings that are stimulated by the coffee drinking experience through the development of an emotion lexicon. In the first part of the study, focus groups were utilized to generate and fine-tune a list of emotions that occur during the coffee drinking experience. The list of terms was further refined by check-all-that-apply method, resulting in 86 emotions, which included 39 terms from a recently published emotion lexicon for food. In the second part of the study, this lexicon of 86 emotions was used to evaluate six coffee samples of various origins and degrees of roasting with 94 consumers. The emotion intensities before and during drinking were assessed. Consumers were clustered into six clusters based on the acceptability scores, and the appropriate emotions for distinguishing the coffee samples were determined by Stepwise Regression Analysis, which resulted in 44 emotions. Emotion maps for each consumer cluster constructed using Principal Components Analysis revealed that each sample generated distinctive emotional responses, which varied across each cluster. The last part focused on identifying the sensory drivers of emotions to understand the consumer’s perceptions because emotional and sensory experiences determine acceptability and consumption of coffee. Two separate highly-trained panels (a general panel and a coffee panel) performed descriptive analysis of the six coffee samples. After comparing the two panels, the coffee-specific panel data was used to identify the sensory attributes that might be responsible for eliciting certain emotions in the consumers. For instance, darker roasts seem to elicit positive-high energy emotions. Overall, this study is a stepping stone for more in-depth product-specific emotion studies in future.
105

Anaerobic Co-digestion of Sewage sludge, Algae and Coffee Ground

Flisberg, Kristina January 2016 (has links)
Energy shortfall and air pollution are some of the challenges the human kind is facing today. Fossil fuel is still the most widely used fuel, which is a non-renewable resource, increasing excess carbon dioxide into the air. To overcome these issues, and reduce the carbon footprint, a greater development of renewable energy from green and natural resources is required. Compared to fossil energy, renewable energy has the benefit to reduce greenhouse gas emissions. There are different solutions available for green and renewable energy. Biomass is all biologically produced matter. Through the biological breakdown of biomass, biogas can be produced through the process called anaerobic digestion. This work was focused on the production of biogas, using algal biomass, sewage sludge and coffee grounds in an anaerobic co-digestion system. The main goal of this study was to investigate the feasibility of combining these three substrates. Two different types of algae were employed; Chlorella vulgaris and Scenedesmus sp. and the investigations included even the cultivation and harvesting of algal biomass. The production of biogas was examined under anaerobic conditions using 5 batch reactors in duplicate under constant temperature of 37 °C in 30 days. The result showed that co-digestion of algal biomass with sewage sludge led to an enhanced biogas production by 75 % compared to that of just sewage sludge. This indicates the synergistic effects of co-digestion. However, the addition of coffee ground to the mixture lowered the biogas production. All mixtures except the two with coffee grounds were in neutral pH. Methanogens, involved in the last step in biogas production are very sensitive to pH, and pH around 7 is the optimal for their activity. Furthermore, the presence of caffeine in the coffee ground could also inhibit the biogas production.
106

Host location by parasitoids of the Coffee Berry Borer, Hypothenemus hampei (Ferrari) (Coleoptera: Curculiondae: Scolitynae)

Chiu-Alvarado, María Pilar January 2008 (has links)
No description available.
107

Primary commodity exposure and risk management for producers in less developed countries

Swaray, Raymond Boima January 2000 (has links)
No description available.
108

Nitrogen budget under coffee

Michori, Peter K. January 1993 (has links)
No description available.
109

Coffee and money in Uganda : an econometric analysis

Henstridge, N. M. January 1995 (has links)
No description available.
110

統一星巴克與City Café 各擅勝場搶攻咖啡市場 / Uni-president seizes brewed coffee market with Starbucks and City Café

高千惠, Kao, Chien Hui Unknown Date (has links)
統一星巴克與City Café 各擅勝場搶攻咖啡市場 / The current study examines consumption habit for coffee users in Taipei and effects of branding on the consumption preference and the possible cannibalization effect of City Café on Starbucks. Through a study consisting of surveys of 108 Taiwanese citizens and a taste test involving 20 students, the following conclusions are made. 1) The findings show 55% of the Taiwanese population drinks coffee on a daily basis and concluded that selling more City Café could increase store revenue by bringing more customers into 7-Eleven stores. 2) The product awareness of City Cafe is gaining quickly with in-store advertising only and without much traditional advertisements; it is enough to have attracted daily drinkers at a rapid rate. 3) Starbucks customers and City Café customers differ in terms of feelings about importance of brand and willingness to pay more for coffee. City Café would not cannibalize Unipresident operated Starbucks walking customer sales if the stores were placed 4 blocks apart. 4) The “blind” and “open” taste tests show people are heavily influenced by brand in their determination of taste. The favorable response in our “blind” taste test compared to the “open” taste test led to the conclusion that a properly managed brand building campaign could increase sales significantly. In the study’s final section, I suggest ways of communicating brand awareness and quality reputation to the customer without infringing on Starbucks market niche. Unipresident seizes Brewed Coffee Market with Starbucks and City Café By Chien-Hui Kao

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