Resumo

SERRAT-DIAZ, Manuel; DE LA FE-ISAAC, Ángel Daniel; DE LA FE-ISAAC, José Alberto  e  MONTERO-CABRALES, Cristóbal. Extraction and characterization of coffee pulp pectin from Robusta variety. Rev Cub Quim [online]. 2018, vol.30, n.3, pp. 522-538. ISSN 2224-5421.

In this work, the extraction of pectin from fresh and sun-dried coffee pulps from Robusta coffee (Coffea canephora) was studied. For this, the influence of temperature, extraction time, pH and liquid-solid ratio on the extraction performance were evaluated. The pH was the only factor that significantly influenced the extraction, reaching the best results at pH 1. Yields of 5,91 % and 4,99 % were obtained for the fresh and dry pulps, respectively. The pectin extracted from the fresh and dried pulps presented, respectively, 82,1 % and 87,8 % of galacturonic acid and number average molar weights of 10 500 g/mol and 11 600 g/mol. The solar drying of the coffee pulp did not influenced appreciably on the extraction performance, as well as on the quality of the pectins obtained.

Palavras-chave : pectin; coffee pulp; sun dried; Coffea canephora.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )