Microwave and Ultrasound Pretreatment of Moringa oleifera Lam. Seeds: Effects on Oil Expression, Oil Quality, and Bioactive Component.

Journal of Oleo Science
Barry Union R Kayanan, Rosario S Sagum

Abstract

This study investigates the application of green technologies (microwave and ultrasound pretreatment) in the extraction of Moringa oleifera Lam. seed oil and its effects on oil expression, oil quality, and bioactive component. Moringa seeds were pretreated with microwave (90 W, 60 s) or ultrasound (50 W, 1 h) before mechanical expression. A separate group received no pretreatment before oil extraction. Oils from these groups were then compared. Results show that oil yield increased with ultrasound pretreatment (1.24%) and significantly increased with microwave pretreatment (3.11%). For oil flow rate, the microwave and ultrasound pretreatment resulted in faster extraction (7.67 and 6.93 kg/h respectively) as compared with the control (6.51 kg/h). For physicochemical parameters, the microwave and ultrasound group had significantly less free fatty acids and significantly greater unsaponifiable matter as compared with the control. For fatty acid composition, results show that moringa seeds procured from Davao Oriental had greater oleic acid content (~77%) as compared with those reported by other literature. For phytosterol content, the predominant phytosterols found were β-sitosterol, stigmasterol, and campesterol. Microwave and ul...Continue Reading

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Sep 4, 2020·Biomedicine & Pharmacotherapy = Biomédecine & Pharmacothérapie·Shyamaladevi Babu, Selvaraj Jayaraman

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