کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4515655 | 1624896 | 2015 | 7 صفحه PDF | دانلود رایگان |
• Effect of pre-treatments of grain fractions on nutrient and inhibitory factors.
• Bran contained high iron, zinc, polyphenols, phytic acid, fibre and flavonoids.
• Alkaline conditions reduced flavonoid content in the endosperm rich fraction.
• Acidic conditions reduced phytic acid content in bran rich fraction.
• Bioaccessibility of zinc in bran and iron in endosperm improved on acidic treatment.
Pearl millet was decorticated to obtain a bran rich and endosperm rich fraction. The two fractions were soaked in solutions with varying pH. Pearl millet grains were germinated and steamed followed by decortication to obtain two fractions. It was observed that bran rich fractions contained high concentrations of iron, zinc, polyphenols, phytic acid, fibre and flavonoids. Soaking for short duration of 3 h did not result in major mineral losses but decreased the inhibitory factors which depended on the pH. Alkaline soaking decreased flavonoid content by 62.7% in the endosperm rich fraction, while acidic soaking decreased phytic acid content to the maximum in the bran rich fraction. Combination of treatments like germination and heat decreased the phytate content to the maximum in the endosperm rich fraction. Acidic conditions improved zinc bioaccessibility in the bran rich fraction (35%) and iron bioaccessibility (2.5%) in the endosperm rich fraction. Bran rich fraction from germinated grain also had enhanced bioaccessibility of both the minerals but comparatively lesser when compared to soaking under acidic conditions. Soaking the grain components under slightly less than neutral conditions also decreased some of the inhibitory factors and improved the zinc bioaccessibility to some extent in the bran rich fraction.
Journal: Journal of Cereal Science - Volume 66, November 2015, Pages 46–52