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Compostos voláteis e sua relação com a qualidade do café diferenciado no processamento por via úmida

Como Citar
Osorio, V., Ortiz, A., Imbachi, L. C., & Fernández-Alduenda, M. R. (2026). Compostos voláteis e sua relação com a qualidade do café diferenciado no processamento por via úmida. Cenicafé Journal, 77(1), e77103. https://doi.org/10.38141/10778/77103

Dimensions
PlumX

Palavras chave
Fruity

ripeness

quality

fermentation

time

temperature

coffee

Frutal

madurez

calidad

fermentación

fermento

tiempo

temperatura

Café

frutado

maturação

qualidade

fermentação

sabor fermentado

tempo

temperatura

café

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seção
Artigos
Termos de licença (See)
Luis Carlos Imbachi
Mario Roberto Fernández-Alduenda

Resumo

O café contém mais de mil compostos voláteis e, destes, aproximadamente 30 contribuem para a percepção dos atributos sensoriais da bebida, sendo fundamentais na avaliação de sua qualidade. Os precursores desses compostos são gerados durante o cultivo e no processamento pós-colheita, sendo transformados durante o processo de torra por meio de diversas reações. Entre os grupos químicos mais relevantes estão os furanos, pirazinas, ácidos, álcoois e aldeídos, entre outros. As diferentes combinações e proporções desses compostos no grão de café permitem distinguir cafés de alta qualidade daqueles que apresentam defeitos sensoriais. Esta pesquisa avaliou 48 diferentes compostos voláteis de grãos de café obtidos de frutos em três diferentes estágios de maturação, submetidos à reserva dos frutos e à fermentação prolongada da mucilagem. A reserva dos frutos apresentou alterações, entre outras, no acetato de etila, no ácido acético e no etanol, contribuindo para o desenvolvimento de características frutadas e de frutas vermelhas nos tratamentos com maior tempo de reserva (48 horas). Por outro lado, a fermentação prolongada da mucilagem em frutos com estágios de maturação mais avançados e submetidos a temperaturas mais elevadas reduziu as pontuações de cinco atributos sensoriais, gerando sabor fermentado. Esse defeito foi relacionado a maiores concentrações de compostos voláteis, como o hexanal e o ácido 3-metilbutanoico.

Valentina Osorio, Centro Nacional de Investigaciones de Café

 Investigador Científico II. Calidad, Centro Nacional de Investigaciones de Café


Aristófeles Ortiz, Centro Nacional de Investigaciones de Café

Investigador Científico I. Fisiología, Cenicafé


Luis Carlos Imbachi, Centro Nacional de Investigaciones de Café

Asistente de Investigación. Biometría, Cenicafé


Mario Roberto Fernández-Alduenda, Specialty Coffee Association

Director Técnico. Specialty Coffee Association


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