Intensified DES mediated ultrasound extraction of tannic acid from onion peel

Sukor, N. F. and Selvam, V. Panner and Jusoh, Rohayu and Kamarudin, N. S. and Abd Rahim, Syarifah (2021) Intensified DES mediated ultrasound extraction of tannic acid from onion peel. Journal of Food Engineering, 296 (110437). pp. 1-11. ISSN 0260-8774. (Published)

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Abstract

Ultrasound–assisted extraction using deep eutectic solvent (DES) was performed to extract tannic acid from onion peel. Notably, DES is an excellent extraction agent, which yielded 641.16 ± 0.01 μg/g of tannic acid compared to the extraction using a conventional solvent (368.99 ± 0.02 μg/g). Subsequently, the research was conducted based on several exploited parameters and achieved the highest extraction yield (1705.79 ± 0.01 μg/g) at the DES ratio of 1:1 (mass ratio of choline chloride to urea), solid to solvent ratio of 1:10 and duty cycle of 10%. The onion sample exhibited higher antioxidant capacity than standard ascorbic acid, which was expressed in the lower values of the half-maximal inhibitory concentration (IC50) at 7.70 ± 1.12 and 10.14 ± 0.11 mg/ml, respectively. Moreover, the Fick's model successfully forecasted that diffusivity is the controlling factor in the extraction of tannic acid via the DES mediated ultrasound–assisted extraction method.

Item Type:	Article
Additional Information:	Indexed by Scopus
Uncontrolled Keywords:	Deep eutectic solvent; Ultrasound–assisted extraction; Tannic acid; Onion peel; Antioxidant analysis; Kinetics
Subjects:	T Technology > TP Chemical technology
Faculty/Division:	Faculty of Chemical and Process Engineering Technology Institute of Postgraduate Studies
Depositing User:	Dr. Rohayu Jusoh
Date Deposited:	05 Sep 2022 08:12
Last Modified:	05 Sep 2022 08:12
URI:	http://umpir.ump.edu.my/id/eprint/34016
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