Evaluation of brans of different rice varieties for their antioxidative and antihyperglycemic potentials

Abu Bakar, Tanko and Marikkar, Nazrim and Salleh, Abubakar and Azlan, Azrina and Jivan, Make (2017) Evaluation of brans of different rice varieties for their antioxidative and antihyperglycemic potentials. Journal of Food Biochemistry, 41 (2). pp. 1-7. ISSN 0145-8884 E-ISSN 1745-4514

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Abstract

The aim of this study was to compare the antioxidant and antihyperglycaemic potentials of bran extracts of seven traditional rice varieties against those of three commercial varieties. The total polyphenolic content and antioxidant activities, the α-amylase and α-glucosidase inhibitory potentials of the rice bran extracts were studied in vitro using relevant assays. The results showed that the rice bran extracts of traditional varieties namely, Beras merah and Beras hitam displayed significantly higher α-glucosidase inhibition (96.56 and 81.52%) and α-amylase inhibition (88.44 and 84.27%) than the other varieties. Being high in polyphenolic content, they tended to display better anti-oxidant capacities than the commercial varieties. Hence, brans of traditional rice varieties such Beras merah and Beras hitam could be potentially useful as raw materials for nutritional supplements and natural anti-diabetic agents. Practical Application: The findings of this study highlighted the anti-oxidative, α-amylase and α-glucosidase inhibitory potentials of some rice brans obtained from Malaysian rice varieties. Since the traditional rice varieties (Beras Merah and Beras Hitam) exhibit significantly higher α-amylase and α-glucosidase inhibition, they could be harnessed as raw materials for preparation of ingredients for pharmaceuticals, and nutraceuticals intended for diabetes management. The findings might give impetus to the Malaysian paddy industry to expand cultivation of Beras Merah and Beras Hitam to produce more bran for value added product formulations for people with special dietary requirements.

Item Type:	Article (Journal)
Additional Information:	7414/56698
Uncontrolled Keywords:	Amylases, nutrition
Subjects:	Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science > Department of Chemistry
Depositing User:	Dr Mohammed Nazrim Marikkar
Date Deposited:	22 Jun 2017 11:57
Last Modified:	20 Apr 2018 21:43
URI:	http://irep.iium.edu.my/id/eprint/56698

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