Spice fixed oils as a new source of g-oryzanol: nutraceutical characterization of fixed oils from selected spices.

Manasa, V. and Sachin, R. Chaudhari and Ajay, W. Tumaney (2020) Spice fixed oils as a new source of g-oryzanol: nutraceutical characterization of fixed oils from selected spices. RSC Advances, 10. pp. 43975-43984.

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Abstract

gamma-Oryzanol is an important group of nutraceuticals that play a key role in addressing metabolic disorders. This study, for the first time, examined volatile-free spice fixed oils (FOs) as an alternate plant source for goryzanol and other nutraceuticals (phenolics, flavonoids, phytosterols, and tocopherols) using HPLC, HRMS and NMR. The in vitro antioxidant activities of FOs were also analysed. The selected spices were Alpinia galanga, Cinnamomum zeylanicum, Trigonella foenum-graecum, Foeniculum vulgare and Myristica fragrans. The major polyphenols and flavonoids quantified were gallic, protocatechuic, vanillic, syringic, para-coumaric, ferulic, rutin, trans-cinnamic, and quercetin. T. foenum-graecum FOs recorded high levels of ergosterol (48.56 mg/100 g) and stigmasterol (247.36 mg/100 g). The fucosterol levels were high in A. galanga (268.31 mg/100 g) FOs, whereas C. zeylanicum FOs showed high content of bsitosterols (7037.77 mg/100 g). C. zeylanicum and T. foenum-graecum FOs recorded high a-tocopherol content (47.55 and 15.96 mg/100 g respectively). C. zeylanicum FOs showed high levels of three ferulates, namely, cycloartenyl ferulate, 24-methylene cycloartenyl ferulate and b-sitosteryl ferulate, whose contents were 89.42, 170.23 and 50.23 mg/100 g respectively which was confirmed by HRMS with a molecular mass (m/z) of 601.45, 615.47, and 589.45 respectively. Further, g-oryzanol ferulates in C. zeylanicum FOs were confirmed by 1 H-NMR analysis. The acidified methanolic extractives of FOs showed high free radical scavenging activity and antioxidant potential. These spice FOs have excellent antioxidant activities, and are novel potential functional ingredients against lifestyle disorders.

Item Type:	Article
Uncontrolled Keywords:	volatile-free spice fixed oils, gamma-Oryzanol, plant source, nutraceuticals
Subjects:	600 Technology > 08 Food technology > 21 Cereals > 01 Rice 600 Technology > 08 Food technology > 30 Spices/Condiments 600 Technology > 09 Industrial oils, fats, waxes, gases > 03 Essential oils
Divisions:	Dept. of Lipid Science Plantation Products Spices and Flavour Technology
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	07 Jan 2021 06:43
Last Modified:	07 Jan 2021 06:43
URI:	http://ir.cftri.res.in/id/eprint/14763

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