บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Recovery of anthocyanins, pectin, and dietary fiber from cull lowbush blueberries.

Chen, H.C. and Camire, M. E.

Journal of Food Quality. Volume 20, Number 3, July 1997. Pages 199-209.

1997

บทคัดย่อ

Recovery of anthocyanins, pectin, and dietary fiber from cull lowbush blueberries.

Cull lowbush blueberries are a potential industrial source of ingredients for the food and pharmaceutical industries. Pureed berries were extracted with ethanol acidified with 1, 3, or 5% (w/w) citric acid. Anthocyanins in the extract were determined spectrophotometrically; pectin and fiber were measured in the residue. More anthocyanins were extracted with 5% citric acid, with highest yields at 7 months' postharvest. Total pectin increased from 3 to 7 months, but decreased at 9 months when 5% citric acid was used. Pectin esterification was influenced by acid level and storage time. Residual dietary fiber decreased over the 9 month storage period. These findings suggest that berries should be sorted for defects as soon as possible after freezing, then culls should be extracted within 6-7 months after harvest for optimal yields.