Bioactive constituents, vitamin analysis, antioxidant capacity and alpha-glucosidase inhibition of Canna indica L. rhizome extracts

Ayusman, S. and Duraivadivel, P. and Gowtham, H. G. and Sharma, S. and Hariprasad, P. (2020) Bioactive constituents, vitamin analysis, antioxidant capacity and alpha-glucosidase inhibition of Canna indica L. rhizome extracts. Food Science, 35. ISSN 2212-4306

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Abstract

Rhizomes of Canna indica were studied to determine their potential use as a functional food, a source of vitamins, nutritional and nutraceutical ingredients. Biomass and nutrient characterization showed the rhizomes were a good source of fiber (25.1%), starch (28.5%), crude protein (4.72%), and lipids (5.75%) with a total estimated caloric value of 423 Kcal/100 g dry weight. The rhizome also had considerable amounts of minerals and vitamins. Acetone extracts of rhizomes showed significantly higher antioxidant properties. The IC50 values with DPPH, ABTS(+center dot) and O-2(center dot-) radicals were 21, 23 and 170 mu g/ml, respectively. The reducing properties (FRAP and CUPRAC) and DNA protection assay were correlated with the total phenolic and flavonoid content of the rhizome extracts. Acetone and methanol extracts showed protection against free radical-induced DNA and protein degradation. In a beta-carotene-linoleic acid model, the acetone extracts significantly decreased the bleaching of beta-carotenoids. In a meat model system, the acetone extracts minimized the thiobarbituric acid reactive substance of ground pork meat. alpha-Glucosidase activity was significantly inhibited using water extracts (IC50 2.35 mu g/ml) and acetone extracts (IC50 27.1 mu g/ml). HR-LCMS/MS analysis of different extracts showed the occurrence of different bioactive compounds such as rosmarinic acid, psoromic acid, usnic acid, isoeugenitol, ellagic acid, coumaric acid and swietenine. The results suggested that C. indica rhizomes might be a potential source of nutrients and metabolites with health benefits.

Item Type: Article
Uncontrolled Keywords: Canna indica; Rhizome; alpha-Glucosidase inhibitors. rosmarinic acid; Psoromic acid; Usnic acid
Subjects: B Life Science > Biotechnology
Divisions: Department of > Biotechnology
Depositing User: Mr Umendra uom
Date Deposited: 19 Feb 2021 09:39
Last Modified: 19 Feb 2021 09:39
URI: http://eprints.uni-mysore.ac.in/id/eprint/15575

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