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Simultaneous optimization of coffee quality variables during storage/ Otimizacao simultanea de variaveis da qualidade do cafe durante armazenamento
The objective of the study was to use methodology of simultaneous optimization of multiple responses applied to an experimental design to determine the best combination of storage period and conditions for preservation of coffee beans. Coffea arabica L. fruits were harvested in the ripe stage of mat...
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Published in: | Revista brasileira de engenharia agrĂcola e ambiental 2017-01, Vol.21 (1), p.56 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Online Access: | Get full text |
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Summary: | The objective of the study was to use methodology of simultaneous optimization of multiple responses applied to an experimental design to determine the best combination of storage period and conditions for preservation of coffee beans. Coffea arabica L. fruits were harvested in the ripe stage of maturation, processed using wet and dry methods, and dried to 11% (wet basis) moisture content. Part of the beans was hulled, while the other part was hulled only after the beans were stored under two different environmental conditions: cooled air at 10 [degrees]C with 50% relative humidity; and at 25 [degrees]C without controlling the relative humidity. Samples were taken at 3, 6, and 12 months intervals in order to evaluate quality. The data were submitted to the simultaneous optimization of responses for each processing and hulling condition separately, in a completely randomized design and 2 x 3 factorial scheme (two storage conditions and three storage periods). In conclusion, the use of the simultaneous optimization of responses is viable to be applied for determining the ideal storage conditions in a refrigerated condition. Key words: Coffea arabica L. processing hulling Objetivou-se utilizar a metodologia de resposta simultanea aplicada a um delineamento experimental para determinar a melhor combinacao de tempo e das condicoes de armazenamento para a conservacao de graos de cafe. Frutos de Coffea arabica L. foram colhidos no estadio de maturacao cereja, processados por via umida ou por via seca e secados ate atingir 11% de teor de agua. Parte dos graos foi beneficiada e parte nao foi beneficiada antes de ser armazenada em duas condicoes de ambiente: em ar refrigerado a 10 [degrees]C e umidade relativa de 50% e em 25 [degrees]C sem controle da umidade relativa do ar. Nos periodos de 3, 6 e 12 meses, foram retiradas amostras para avaliacao da qualidade. Os dados foram submetidos a tecnica de otimizacao de resposta simultanea para cada processamento e beneficiamento separadamente, em delineamento inteiramente casualizado e esquema fatorial 2 x 3 (duas condicoes de armazenamento e tres periodos de armazenamento). Conclui-se que a utilizacao da metodologia de resposta simultanea e viavel para ser aplicada para determinacao das condicoes ideais de armazenamento em condicao refrigerada. Palavras-chave: Coffea arabica L. processamento beneficiamento |
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ISSN: | 1415-4366 |
DOI: | 10.1590/1807-1929/agriambi.v21n1p56-60 |