Unraveling the nutritional and therapeutic propert

Authors: R Valarmathi M Raveendran S Robin N Senthil

Publish Date: 2014/07/30

Volume: 24, Issue: 3, Pages: 305-315

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Abstract

‘Kavuni’ a traditional brownish black rice variety is known for its antidiabetic properties and is grown under limited areas of Tamil Nadu India The present study was aimed at profiling the nutritional and therapeutic values of Kavuni grains in comparison with three other popularly eaten white rice varieties of Tamil Nadu viz CO 50 IR64 and White Ponni Biochemical analysis revealed the significant differences in the nutritional composition of Kavuni grains when compared to other three white rice genotypes viz 29–35  reduced level of total soluble sugars low fat content 8–35  21–52  increased dietary fibre and 7–24  increased total protein content Kavuni grains had significantly higher amount of iron 20–30  calcium 33–45  copper 95–147  sodium 21–38  potassium 7–15  and magnesium 89–26  GCMS analysis showed that phenolic acids and flavonoids were predominant in the Kavuni grains whereas sugars and fatty acids were predominant in the grains of a white rice variety CO 50 Further Kavuni was found to possess significantly higher levels of different carotenoids βcarotene—462 μg/100 g lutein—2216 μg/100 g total phenolics 288 μg/100 g and higher antioxidant activity Methanol and ethyl acetate extracts of Kavuni grains were found to exhibit significantly higher level of inhibitory activity against αamylase and αglucosidase than the extracts of CO 50 αamylase IC50—01 10 μg/ml and αglucosidase IC50 004 005 μg/ml

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