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Revista Brasileira de Zootecnia

versão impressa ISSN 1516-3598versão On-line ISSN 1806-9290

Resumo

BARCELOS, Adauto Ferreira et al. Estimate of the carbohydrate fractions of the coffee hulls and dehydrated pulp of coffee (Coffea arabica L.) stored for different period. Rev. Bras. Zootec. [online]. 2001, vol.30, n.5, pp.1566-1571. ISSN 1806-9290.  https://doi.org/10.1590/S1516-35982001000600026.

The coffee hull and pulp dehydrated carbohydrate fractions A, B1, B2 and C, were evaluated according to the CNCPS. Three coffee cultivars were evaluated: Catuaí, Rubi and Mundo Novo. Pulp was obtained by moist pulping in a mechanical pulper and dried in the sun adjusted to 13% moisture. Materials were stored in raffia bags in environment free of moisture and well ventilated. Samplings were taken every 90 days. The equations utilized for determining fractions were reported in the CNCPS model. There was an increase in the fraction A and B1 content and reductions in fractions B2 and C as the storage time increased. The Catuaí cultivar presented a higher fraction A value, compared to Rubi and Mundo Novo. Fraction B1 was greater in the cultivars Catuaí and Rubi compared to Mundo Novo. The cultivar Mundo Novo presented higher value for fraction B2 compared to the cultivars Catuaí and Rubi. No significant differences were found among the cultivars for fraction C. Coffee hull presented higher values for fractions A and B1 and lower for fraction B2 compared to dehydrated pulp, whilst fraction C was greater in the pulp as compared with coffee hull. The storage for 12 months changed the ratio of the carbohydrates, reducing the slow degradability and undegradable fractions and increasing the fast degradability fractions. Pulping process reduces sugars and pectin. Hull and pulp are materials with a high ratio of unavailable carbohydrates, which may limit its use in great amounts for ruminants.

Palavras-chave : soluble carbohydrate; undegradable carbohydrate; coffee hull; coffee pulp; agricultural residue.

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