TITLE:
Effect of Water Regimes on Dietary Fiber, Polyphenols and Antioxidant Capacity of Black and Pinto Beans
AUTHORS:
Maribel Ovando-Martínez, Salvador Horacio Guzmán-Maldonado, Senay Simsek, Luis Arturo Bello-Pérez, Perla Osorio-Díaz
KEYWORDS:
Water Regimes; Dietary Fiber; Indigestible Fraction; Polyphenols; Antioxidant Capacity; Cooking
JOURNAL NAME:
Agricultural Sciences,
Vol.5 No.4,
March
21,
2014
ABSTRACT:
Beans are rich in dietary fiber and polyphenols;
however, growing conditions may affect the occurrence of these components. The
effect of irrigation and rain fed conditions on dietary fiber, indigestible
fraction, polyphenols and antioxidant capacity of Black 8025 and Pinto Durango
bean cultivars grown in Mexico have been determined. Total dietary fiber
decreased in beans grown under rain fed conditions compared to those grown
under irrigation. The water regimes had an effect on the total indigestible
fraction for Black 8025 bean. The extractable polyphenols were affected by the
water regimes, while the antioxidant capacity of extractable and
non-extractable polyphenols was dependent on the bean variety. Cooking the
beans altered the extractable and non-extractable polyphenols and the
antioxidant capacity. Also, the antioxidant properties and some extend, the
digestibility of non-digestible carbohydrates of beans were affected by water regimes.
This information could be taken into account for dry
bean breeding programs to improve the nutritional quality of beans.