Fatores de armazenagem que afetam a qualidade do café

dc.contributor.advisorZachariah, G. L.pt_BR
dc.contributor.authorHara, Tetuopt_BR
dc.contributor.otherPurdue Universitypt_BR
dc.date2001-01-01 00:00:00.0pt_BR
dc.date.accessioned2015-01-14T13:05:15Z
dc.date.available2015-01-14T13:05:15Z
dc.date.issued1972pt_BR
dc.descriptionDissertação de Mestrado defendida na Purdue Universitypt_BR
dc.description.abstractThe United States imports more than 20 million bags of coffee beans annually corresponding to a value of more than one billion dollars, mainly through the ports of New York, New Orleans, and San Francisco. They are normally stored for a period of time depending on the schedule for further distribution to roaster plants or re-exported. Therefore they are subjected to varying warehouse environmental conditions including temperature, humidity, light exposure, and darkness. Coffee quality is also related to its color. The mentioned storage factors may cause color change on coffee beans during the storage period. Four commercial Arabica coffee from Hawaii, Brazil, Colombia, and Mexico were chosen for the study. Color evaluation of coffee beans was made by visual observation and by spectrophotometer. The relative reflectance was measured over a number of beans covering an area equivalent to a circle with approximately 2 inches in diameter. A supplementary test was conducted by measuring the relative reflectance of individual coffee beans. After two weeks of treatmnents the color of the coffee beans was evaluated and data were compared with those at initial conditions. Results indicated that at low temperature, and with exposure to light the color of the coffee beans was practically unchanged. In some cases an apparent improvement in color quality was observed. All samples stored in the dark showed bleached beans and all those exposed to constant Iight maintained their initial color in most of the cases. High temperature tended to darken the green color and an overall darker color. The spectrophotometric readings did not provide sufficient information to detect obvious bleached beans in some cases.en
dc.description.sponsorshipPurdue Universitypt_BR
dc.identifier.citationHara, Tetuo. Storage factors affecting coffee quality. West Lafayette, Ind.: Purdue University, 1972. 49p. : il. (Dissertação - mestrado em Engenharia Agrícola) Orientador: G. L. Zachariah T 633.736 H254s 1972pt_BR
dc.identifier.other93821pt_BR
dc.identifier.urihttp://www.sbicafe.ufv.br/handle/123456789/96
dc.language.isopt_BRpt_BR
dc.publisherPurdue Universitypt_BR
dc.subjectCafé Armazenamento Qualidadept_BR
dc.subjectCoffee Storage Qualityen
dc.subject.classificationCafeicultura::Colheita, pós-colheita e armazenamentopt_BR
dc.titleFatores de armazenagem que afetam a qualidade do cafépt_BR
dc.titleStorage factors affecting coffee qualityen
dc.title.alternativeStorage factors affecting coffee qualityen
dc.typeDissertaçãopt_BR

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