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Kinetics of microwave-assisted extraction of virgin coconut oil from solid coconut waste

Hasni, Mohd Haffizi and Sulaiman, Sarina and Jimat, Dzun Noraini and Amid, Azura (2022) Kinetics of microwave-assisted extraction of virgin coconut oil from solid coconut waste. Chemical Engineering Communications. pp. 1-19. ISSN 0098-6445 E-ISSN 1563-5201

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Solid coconut waste (SCW) is a by-product of coconut milk production which still contains virgin coconut oil (VCO). This waste usually is thrown away or left in fields. This study aims to optimize the effects of Microwave power (80–400 W), irradiation time (1–4 minutes), and solvent to feed ratio (SF) (10–30 ml/g) on the extraction of VCO from SCW using microwaveassisted extraction. The optimized conditions were microwave power: 160 W, Irradiation time: 2.5 minutes, and SF: 30 ml/g (15.93% yield). After the extraction, the characteristics of the oil such as matters volatile at 105 �C (0.193%), Free Fatty Acid (FFA) (1.38%), peroxide value (undetectable), insoluble impurities (0.0015%), saponification value (258mg/g), iodine value (7.60), specific gravity at 30 �C (0.918), and total plate count (0 CFU/ml) were determined. The second-order kinetic model described the extraction the best (R2 adj ¼ 0.9994). This method proves to be more efficient than the conventional virgin coconut oil extraction method.

Item Type: Article (Journal)
Uncontrolled Keywords: Coconut; coconut waste; microwave-assisted extraction; optimization; second order kinetic; virgin coconut oil
Subjects: T Technology > TP Chemical technology > TP155 Chemical engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Biotechnology Engineering
Kulliyyah of Engineering
Depositing User: Dr Sarina Sulaiman
Date Deposited: 27 Dec 2022 10:29
Last Modified: 27 Dec 2022 10:47
URI: http://irep.iium.edu.my/id/eprint/102435

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