Microwave and ultrasound-assisted natural deep eutectic solvents-based extraction of pectin from onion peel wastes

Autor: Riyamol, Jeevitha G.C
Jazyk: English<br />Spanish; Castilian
Rok vydání: 2024
Předmět:
Zdroj: CyTA - Journal of Food, Vol 22, Iss 1 (2024)
Druh dokumentu: article
ISSN: 19476337
1947-6345
1947-6337
DOI: 10.1080/19476337.2024.2311215
Popis: ABSTRACTPectin was extracted from onion peels using microwave and ultrasound-assisted natural deep eutectic solvents (NADES) and compared with conventional acid-extracted pectin. The primary screening trials indicated that the suitable combination of hydrogen bond acceptor and donor was choline chloride and tartaric acid, respectively. The Box-Behnken design was further used to optimize processing conditions like microwave intensity (26.903 W/g), microwave processing duration (2.99 min), and sonication duration (10.18 min) for maximizing the pectin yield from onion peel powder. The moisture, ash, and equivalent weight of extracted pectin were in the range specified by the International Pectin Producers Association. The higher anhydrouronic acid content of the NADES-extracted pectin indicated the higher purity of pectin compared to the conventional acid-extracted pectin. The NADES-based extraction was found to be a promising system for extracting pectin with a higher degree of esterification from onion peels.
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