Natural deep eutectic solvent-assisted pectin extraction from pomelo peel using sonoreactor: experimental optimization approach

Elgharbawy, Amal A.M. and Hayyan, Adeeb and Hayyan, Maan and Mirghani, Mohamed Elwathig Saeed and Mohd. Salleh, Hamzah and Rashid, Shahidah Nusailah and Ngoh, Gek Cheng and Liew, Shan Qin and Mohd Nor, Mohd Roslan and Zulkifli, Mohd Zamani and Alias, Yatimah (2019) Natural deep eutectic solvent-assisted pectin extraction from pomelo peel using sonoreactor: experimental optimization approach. Processes, 7 (7). pp. 1-19. E-ISSN 2227-9717

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Abstract

Background: Natural deep eutectic solvents (NADESs) can be used for extracting a wide range of biomaterials, such as pectin. This study introduces a new generation of natural solvents for pectin extraction which could replace the conventional solvents in the food industry. Methods: In this study, NADESs were used for pectin extraction from pomelo (Citrus grandis (L.) Osbeck) peels using a sonoreactor. Definitive screening design (DSD) was used to screen the influence of time, temperature, solid/liquid ratio, and NADES/water ratio on the pectin yield and degree of esterification (DE). Results: The primary screening revealed that the best choices for the extraction were choline chloride–malonic acid (ChCl-Mal) and choline chloride–glucose–water (ChCl:Glc:W). Both co-solvents yielded 94% pectin and 52% DE after optimization at 80 ◦C, with 60 min of sonication, pH < 3.0, and a NADES-to-water ratio of 1:4.5 (v/v). Morphological screening showed a smooth and compact surface of the pectin from ChCl-Mal where glucose-based pectin had a rough surface and lower DE. Conclusions: NADESs proved to be promising co-solvents for pectin extraction with a high degree of esterification (>55%).

Item Type:	Article (Journal)
Additional Information:	8637/73049
Uncontrolled Keywords:	pectin; natural deep eutectic solvent; Citrus grandis; definitive screening design; pomelo; extraction
Subjects:	T Technology > TP Chemical technology T Technology > TP Chemical technology > TP248.13 Biotechnology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	International Institute for Halal Research and Training (INHART) Kulliyyah of Engineering
Depositing User:	Dr AMAL ELGHARBAWY
Date Deposited:	11 Jul 2019 09:50
Last Modified:	20 Jul 2020 16:11
URI:	http://irep.iium.edu.my/id/eprint/73049

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