Teor de açúcar da água residuária do processamento do café
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Data
2007
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Resumo
A fermentação dos açúcares contidos na mucilagem da água residuária do café (ARC) possibilita obter álcool. Para se obter bom rendimento de álcool é necessário ajustar o teor de açúcar da ARC para 16° Brix. O trabalho teve como objetivo quantificar os teores de açúcar da ARC, após sucessivas reciclagens no processo de desmucilamento. Colocou-se água de torneira em amostras de café cereja descascado, das variedades Bourbon Vermelho e Bourbon Amarelo, e a mucilagem foi extraída, girando-se um bastão de vidro, por 3 minutos. Foram feitas até seis extrações, em seqüência, reciclando-se a ARC obtida. Os teores de açúcar da ARC aumentaram linearmente com o aumento do número de extrações realizadas. O teor de açúcar da ARC elevou-se de 3,1 para 9,3° Brix, após cinco extrações, e de 2,6 para 10,3° Brix, após seis extrações da mucilagem do cereja descascado, das variedades Bourbon Vermelho e Bourbon Amarelo, respectivamente.
The sugar fermentation of the mucilage in residual water of coffee processing (RWC) permits alcohol production. To obtain large alcohol yield is necessary adjust the sugar content of the RWC to 16° Brix. The work had as objective to quantify sugar content of the RWC, after successive recycling steps of coffee processing. Tap water was placed on pulped coffee samples of Red Bourbon and Yellow Bourbon varieties and the mucilage was extracted by a glass staff, moved around the sample, during 3 minutes. Until 6 extractions were carried out, successively, recycling the RWC obtained. The sugar content of the RWC had increased linearly with the increase of the number of extrations. The sugar content of the RWC was raised from 3.1 for 9.3° Brix, after 5 extrations, and from 2.6 for 10.3° Brix, after 6 extrations of the mucilage of Red Bourbon and Yellow Bourbon varieties pulped coffee, respectively.
The sugar fermentation of the mucilage in residual water of coffee processing (RWC) permits alcohol production. To obtain large alcohol yield is necessary adjust the sugar content of the RWC to 16° Brix. The work had as objective to quantify sugar content of the RWC, after successive recycling steps of coffee processing. Tap water was placed on pulped coffee samples of Red Bourbon and Yellow Bourbon varieties and the mucilage was extracted by a glass staff, moved around the sample, during 3 minutes. Until 6 extractions were carried out, successively, recycling the RWC obtained. The sugar content of the RWC had increased linearly with the increase of the number of extrations. The sugar content of the RWC was raised from 3.1 for 9.3° Brix, after 5 extrations, and from 2.6 for 10.3° Brix, after 6 extrations of the mucilage of Red Bourbon and Yellow Bourbon varieties pulped coffee, respectively.
Descrição
Trabalho apresentado no Simpósio de Pesquisa dos Cafés do Brasil (5. : 2007 : Águas de Lindóia, SP). Anais. Brasília, D.F. : Embrapa Café, 2007.
Palavras-chave
Café Processamento Resíduos Aproveitamento, Coffee Processing Residues Exploitation
Citação
Soares, Guilherme F.; Soares, Victor F.; Soares, Sammy F.; Donzeles, Sérgio M. L. Teor de açúcar da água residuária do processamento do café. In: Simpósio de Pesquisa dos Cafés do Brasil (5. : Águas de Lindóia, SP : 2007). Anais. Brasília, D.F. : Embrapa - Café, 2007. (1 CD-ROM), 3p.