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Air drying of macauba fruits: maintaining oil quality for biodiesel production

sexta-feira, novembro 08, 2019

Resultado de imagem para óleo macauba
Fonte: Google

Autores: Gutierres Nelson Silva; José Antonio Saraiva Grossi; Marcela Silva Carvalho; Kacilda Naomi Kuki; Samuel de Melo Goulart; Leonardo Duarte Pimentel

ABSTRACT.

Macauba fruits are oil-rich drupes with high moisture content at harvest. This feature can affect the chemical properties of the oil and increase the costs of biodiesel production. Therefore, it is necessary to adopt postharvest strategies to ensure oil quality. The aim of this work was to evaluate the effect of drying macauba fruit on the quality of the pulp oil. Husked and dehusked fruits were dried at 60°C and then stored. At 0, 15, 45, 100, and 180 days after storage, fruit samples were retrieved, and the oil from the pulp was evaluated for physicochemical parameters. The removal of the husk from the fruits considerably reduced the drying time compared to that of the husked fruits. Drying prevented deterioration of the fruit even after 180 days of storage, regardless of the presence of the husk. The drying process allowed for efficient storage of the macauba fruit while maintaining low levels of oil acidity. Furthermore, the oxidative stability of the pulp oil from the dehusked dried fruits lasted longer than that from the husked dried fruits. Therefore, drying is a viable alternative for the postharvest of macauba fruits to maintain the quality of the oil for biodiesel production.

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Fonte: Repositório Scielo

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