Made available in DSpace on 2014-06-11T19:23:25Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-06-14Bitstream added on 2014-06-13T19:50:07Z : No. of bitstreams: 1 macoris_ms_me_arafcf.pdf: 1691953 bytes, checksum: 2e6beb7fbfeda6c3205e3729f47600f5 (MD5) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Os compostos voláteis desempenham papel fundamental para o aroma e o sabor das frutas. Os principais compostos responsáveis pelo aroma do maracujá são da classe dos ésteres, terpenos e aldeídos, que contribuem para o aroma doce, frutal, floral e verde da fruta. A concentração dos compostos antioxidantes nas frutas depende sobremaneira de fatores genéticos, condições edafoclimáticas, estádio de maturação e tipo de cultivo. Os objetivos deste trabalho foram obter informações a respeito das etapas que envolvem o estudo da composição de voláteis das frutas e realizar o levantamento dos compostos voláteis do maracujá já identificados visando dar suporte ao trabalho experimental; determinar a influência do tipo de cultivo e do estádio de maturação no conteúdo de compostos fenólicos totais (TPC) e na atividade antioxidante total (AAT) da polpa de maracujá; avaliar a aceitação sensorial do suco preparado com polpa de maracujá obtido por cultivo orgânico e convencional e as características físico-químicas da polpa ao longo da maturação; determinar a composição de voláteis da polpa de maracujá orgânico e convencional, avaliando suas alterações ao longo da maturação; e avaliar a importância odorífera dos compostos voláteis da polpa de maracujá orgânico e convencional dos estádios de maturação correspondentes à cor de casca 1/3, 2/3 e 3/3 amarela para o aroma global da fruta. A influência do estádio de maturação e do cultivo no teor de compostos fenólicos totais (TPC) e na atividade antioxidante total (AAT) da polpa maracujá orgânico e convencional foi avaliada durante a maturação da fruta, sendo a extração de TPC otimizada usando delineamento fatorial composto central (23), cujas variáveis foram volume de amostra, volume de metanol na solução extratora e volume de solução extratora. TPC foi determinado empregando o método... / Volatile compounds play a fundamental role in the aroma and flavor of fruits. Esters, terpenes and aldehydes are the volatile compounds with the major contribution to the flavor of the passion fruit, contributing to the sweet, frutal, floral and green characteristic flavor of the passion fruit. The content of antioxidant compounds in fruits is strongly affected by genetic factors, edaphoclimatic conditions, ripening stage and cultivation system. The aim of this work was to obtain information about the steps of the study of volatile compounds in fruits and to do a review of the volatile compounds ahead identified in passion fruit, to support the experimental research; determine the influence of the system cultivation and ripening stage on the total phenolic content (TPC) and antioxidant activity (AAT) of the passion fruit pulp; evaluate the sensory acceptance of the juice prepared using organic and conventional pulp and the physicochemical characteristics of the pulp during ripening, and evaluate the odoriferous contribution of the volatile compounds of organic and conventional passion fruit pulp from the stages of ripening of the color of the peel 1/3 yellow, 2/3 yellow and 3/3 yellow to the global aroma of the fruit. The effect of the ripening stage and cultivation system on the total phenolic content (TPC) and total antioxidant activity (AAT) of passion fruit pulp were evaluated during the passion fruit ripening. TPC extraction from the passion fruit pulp was optimized using a central composite factorial design (23), which variables were sample volume, proportion of methanol in the extraction solution and extraction solution volume. TPC was determined by Folin-Ciocauteu method and AAT using the discoloration reaction of ABTS. The physicochemical studied parameters were soluble solids, titratable acidity, pH, ratio, reducing and total sugars, and ascorbic acid. The acceptance panel was... (Complete abstract click electronic access below)

Submitted by DANIEL ANTONIO VILLAMIL MONTERO null (dvillamontero@fca.unesp.br) on 2017-07-17T04:38:29Z No. of bitstreams: 1 TeseDAVM_julho.pdf: 9783024 bytes, checksum: 5e47b7548f0a031f8c1c3c3ddbc72902 (MD5) / Approved for entry into archive by Luiz Galeffi (luizgaleffi@gmail.com) on 2017-07-19T16:34:48Z (GMT) No. of bitstreams: 1 villamilmontero_da_dr_bot.pdf: 9783024 bytes, checksum: 5e47b7548f0a031f8c1c3c3ddbc72902 (MD5) / Made available in DSpace on 2017-07-19T16:34:48Z (GMT). No. of bitstreams: 1 villamilmontero_da_dr_bot.pdf: 9783024 bytes, checksum: 5e47b7548f0a031f8c1c3c3ddbc72902 (MD5) Previous issue date: 2017-02-03 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / As relações e interações entre os seres humanos e as passifloras são múltiplas e complexas, incluindo casos como a domesticação, dispersão, aproveitamento e depredação de espécies (entre outras). Dada sua importância econômica, as passifloras constituem um recurso genético muito importante e a caracterização de populações silvestres e cultivadas é uma prioridade para os países neotropicais que albergam a maior diversidade do gênero. Mais de 80 espécies produzem frutos comestíveis e pelo menos 37 são cultivadas local e regionalmente. A implementação de estratégias para a conservação e o aproveitamento destes recursos fitogenéticos são necessárias, devido ao seu potencial para o desenvolvimento e diversificação de agricultura. O estudo aprofundado das relações humanas com as plantas cultivadas do gênero Passiflora pretende contribuir com delineamentos para programas de conservação da biodiversidade de passifloráceas. Neste trabalho são abordadas informações agroecológicas, biogeográficas e etnobotânicas correspondentes às espécies úteis de Passiflora. / Relationships and interactions between humans and passionflowers are multiple and complex, including cases such as domestication (among others). Due to their economic importance, passiflowers constitute a very important genetic resource and the characterization of wild and cultivated populations is a priority for Neotropical countries that have the greatest diversity of the genus. More than 80 species produce edible fruits and at least 37 are grown locally and regionally. The implementation of strategies for the conservation and utilization of these genetic resources are necessary due to their potential for the development and diversification of agriculture. A depth study of cultivated plants of the genus Passiflora intends to contribute with designs for programs of conservation of the biodiversity of Passifloracea. In this work the agroecological, biogeographic and ethnobotanical information corresponding to the useful species of Passiflora are presented and discussed.

Orientador: Flavio Luis Schmidt / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos / Made available in DSpace on 2018-08-26T09:05:26Z (GMT). No. of bitstreams: 1 Faria_CarolyneBitencourt_D.pdf: 4465395 bytes, checksum: f14b25e18870fa1f58207127c61810f1 (MD5) Previous issue date: 2014 / Resumo: Este trabalho teve como objetivo a avaliação da adição da farinha da casca de maracujá (FCM), em substituição parcial da maltodextrina utilizada como coadjuvante de secagem na atomização da polpa de maracujá. Foi realizado o estudo das características físico-químicas, tecnológicas e estruturais da farinha obtida da casca do maracujá amarelo. Esta apresentou alta porosidade, boa solubilidade em meio líquido e alta temperatura de transição vítrea (Tg), mostrando-se um produto com promissoras características tecnológicas. Para avaliar a quantidade de FCM adicionada em substituição a maltodextrina, foi realizado um estudo do seu comportamento reológico. Os parâmetros reológicos foram determinados a 25, 40, 60 e 80°C, por meio de um viscosímetro de cilindros coaxiais, com variação da taxa de deformação de 6,60 a 198,0 s-1. No ajuste dos dados foram utilizados os modelos matemáticos: Leis da Potência e Herschel-Bulkley. Para otimizar a quantidade máxima de FCM adicionada na polpa para se obter sua secagem por atomização, foi realizado um planejamento estatístico central rotacional 23, com 3 pontos centrais, totalizando 17 ensaios, onde as variáveis independentes foram a temperatura do ar de entrada (163 a 197°C), a vazão mássica de alimentação (340 a 540 mL/h) e a concentração de agente carreador (0/100% a 15/85% - FCM/maltodextrina p/p). As respostas analisadas foram densidade aparente, umidade do pó, teor de ácido ascórbico, rendimento do processo, tempo de dissolução e higroscopicidade do pó. A adição da FCM reduziu a umidade, aumentou o rendimento e a conservação do ácido ascórbico no produto final. Assim as melhores condições de secagem estabelecidas foram: 190°C, 500 ml/h e 11,6/88,4% de FCM/maltodextrina. O pó produzido no ponto ótimo apresentou boa aceitação sensorial, quando preparado na forma de néctar, com apenas redução do aroma. Foi avaliada sua higroscopicidade através de isotermas de adsorção. Observou-se que o pó permaneceu estável a baixas umidades e mostrou o mesmo comportamento dos pós contendo apenas maltodextrina. Os resultados obtidos neste trabalho mostraram a viabilidade da adição da FCM na secagem por atomização da polpa de maracujá, melhorando as características do pó e seu valor nutricional / Abstract: This work aimed to evaluate the addition of passion fruit peel flour (PFPF), as a substitute for part of maltodextrin used as an adjuvant in the spray drying of passion fruit pulp. The study of the physic-chemical, technological and structural characteristics of the flour obtained from the peel of yellow passion fruit was held. This having high porosity, good solubility in liquid medium and high glass transition temperature (Tg), being a product with promising technological characteristics. To assess the amount of PFPF added to replace maltodextrin, a study of the rheological behavior was performed. The rheological parameters were determined at 25, 40, 60 and 80°C via a coaxial cylinder viscometer, with variation of the strain rate from 6,60 at 198 s-1. In data fitting mathematical models of the: Laws of Power and Herschel-Bulkley. To optimize the maximum amount of PFPF was performed a rotational central statistical design 23, with 3 central points, totaling 17 tests, where the independent variables were the temperature of the incoming air (163 at 197°C), the mass flow rate (340 at 540 mL/h) and the concentration of maltodextrin (0/100% at 15/85% PFPF/maltodextrin w/w). The responses analyzed were bulk density, moisture powder, ascorbic acid content, process yield, dissolution time and hygroscopic powder. The addition of PFPF reduced moisture, increased yield and conservation of ascorbic acid in the final product. So the best drying conditions established were: 190°C, 500 mL/h and 11.6/88.4% PFPF/maltodextrin. The produced at optimum powder showed good acceptability, when prepared in the form of nectar, with only reduction of flavor. Its hygroscopicity was evaluated adsorption isotherms. It was observed that the powder was stable at low humidity and showed the same behavior of powders containing only maltodextrin. The results of this study show the viability of the addition of PFPF in spray drying of passion fruit pulp, improving the characteristics of the powder and its nutritional value / Doutorado / Tecnologia de Alimentos / Doutora em Tecnologia de Alimentos

Ecopreneurs are those entrepreneurs who sell green services or products, for profit. The research on this sub-category of entrepreneurship is still in its infancy, especially in South Africa. The focus of this study is to undertake research to understand the motivational drivers of ecopreneurs, why they decide to start and run their green businesses, and if and how that may differ from the general population of entrepreneurs. The findings in this research report will be compared to the existing body of literature on ecopreneurial motivations outside of South Africa.This research project comprises ten in-depth interviews with ecopreneurs in South Africa. Ecopreneurs were interviewed face-to-face, in an unstructured format. Secondary sources of data such as printed marketing material and company web sites were also collected.The research found that ecopreneurs in South Africa were motivated by ten factors, in order of prevalence: passion and meaning; identifying a gap in the market; values; money; disruption and change; independence; family-related motivators; dealing with pleasant people; vision and the least prevalent, work-related motivators. Ecopreneurs and entrepreneurs appear to have quite similar motivations, aside from their passion and values. Their economic motivations were found to be secondary to other motivations like passion and values.There was a lack in diversity in the sample and the country context of South Africa influences the results.This is the first sample of ecopreneurs of its kind in South Africa and given the gaps in the literature, especially in South Africa, a total of ten suggestions were made for future research. / Dissertation (MBA)--University of Pretoria, 2012. / Gordon Institute of Business Science (GIBS) / unrestricted

Solicitud de envío manuscrito de artículo científico. / En el presente estudio, se relacionaron las variables pasión y estado de fluidez (flow) en 142 bailarines de una escuela de danza. La pasión es la identificación que tiene la persona con una actividad que le encanta e invierte tiempo, dedicación y compromiso (Carpentier, Megaeu y Vallerand, 2012). El flow es la abstracción del tiempo y del espacio que tiene la persona ante una actividad que le es placentera (Hernández, Morales y Triguero 2012). Se aplicaron los instrumentos: Escala de pasión adaptada en español (Orgamdídez, Borrego y Gonçalves, 2014) y la Escala de flow adaptada en español (García et al. 2008). Los resultados demuestran que existe una correlación positiva entre la pasión y el flow en los bailarines (p<,05). Además, se encontró que existe diferencia significativa en la variable sociodemográfica roles de los bailarines, evidenciando que los profesionales y estudiantes experimentan mayor pasión y flow (p<,05). / In the present study, the variables passion and state of flow in 142 dancers from a dance school were related. Passion is a person's identification with an activity that they love and invest time, dedication, and commitment (Carpentier, Megaeu and Vallerand, 2012). Flow is the abstraction of time and space that a person has in front of an activity that is pleasurable for them (Hernández, Morales and Triguero 2012). The followed instruments were applied: Passion Scale; adapted to Spanish (Orgamdídez, Borrego and Gonçalves, 2014) and Flow Scale; also adapted to Spanish (García et al. 2008). The results show that there is a positive correlation between passion and flow in dancers (p <,05). Moreover, it was found that there is a significant difference in the sociodemographic variable of the roles of the dancers, showing that professionals and students experience greater passion and flow (p <,05). / Tesis

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<p>This thesis isconcerned with Jean-Jacques Rousseau's treatment of the effect of political actions on the human problem. Four emphases in that treatment are considered.</p> <p> In the first place, Rousseau is concerned about what can be called a tension between nature and society, a tension which is basic to the human situation as he sees it. He wants to distinguish between good nature and bad society and between a good, natural self and a bad, social self.</p> <p>In the second place, closer scrutiny reveals that the tension between nature and society hinges on the problem of passion. Rousseau wants further to distinguish between good, natural passions and bad, social passions, and the political problem is always and everywhere the same: how to control the bad, social passions.</p> <p>In the third place, there is a dialectical unity in Rousseau's treatment of the tension between nature and society. Contrary to many interpretations, he does not treat nature and society as concrete abstractions but only as hypothetical abstractions. His writings are consistent; he is both idealistic and realistic, theoretical and practical, optimistic and pessimistic.</p> <p>In the fourth place, whether Rousseau is talking about individuals or societies there is a continuing emphasis on an organic cycle of life and death. An ironical situation develops in respect of political actions. that affect the tension between nature and society. Political actions have to be as natural as possible, but they confront nature as limit, in the form of a natural tendency on the part of individuals to place their own interests ahead of those of their fellows. Rousseau envisions no way out of that vicious circle, and we are, therefore, faced with the prospect of a never-ending cycle of life and death of all organic bodies, including bodies politic.</p> <p>Those four emphases inform the structure of this thesis. The thesis is divided into a series of chapters dealing with different aspects of the tension between nature and society. The thesis begins with a discussion of how Rousseau himself dealt with the problems that he faced in his life, given that he considered himself an exemplar of what it meant to be both natural and human. The thesis then looks at the tension between nature and society viewed as hypothetical abstractions, after which the tension is considered from an historical perspective. </p> <p>The centrepiece of the thesis consists of a discussion of how political actions can affect the tension between nature and society, through communitarian and egalitarian politics. The cycle is completed by showing why, in the long run, all bodies politic are bound to decay and die, bearing in mind, however, that regeneration is always possible.</p> / Thesis / Doctor of Philosophy (PhD)