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  • Title: Changes in the GABA and polyphenols contents of foxtail millet on germination and their relationship with in vitro antioxidant activity.
    Author: Sharma S, Saxena DC, Riar CS.
    Journal: Food Chem; 2018 Apr 15; 245():863-870. PubMed ID: 29287452.
    Abstract:
    Germination along with ultrasonic assisted extraction induced a significant beneficial effect on the characteristics of polyphenolic components profile, GABA contents and in vitro antioxidant capacity of the foxtail millet flour extracts. The total antioxidant activity (29.0-45.23 mgAAE/g) and reducing power (0.53-0.76 µg/ml) increase during germination were due to quantitative increase in phthalicacid; hex-3yl-ester; hexadecanoicacid methylester etc. whereas, increase in DPPH (48.32-59.62%) and hydrogen peroxide scavenging activities (35.44-63.07 mM-Trolox/g) were attributed to increase in hexadecanoic acid methylester; 9,12-Octadecadienoicacid ethylester and synthesis of new compounds like pentadecanoicacid; 14-methyl-methylester etc. The metal chelating abilities (34.92-57.38 mgEDTA/g) and in vitro antioxidant activity increase due to overall increase in phenolics, flavonoids along with GABA contents. Synthesis of additional polyphenolic components viz. astaxanthin, propanoicacid, 1-monolinoleoylglycerol trimethylsilylether, 9,12,15-octadecatrienoicacid etc. as a result of germinated explored the possible potential utilization of germinated foxtail millet grains in various functional and convenience food formulations.
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