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Extraction of Siberian Cocklebur Oil:Effects of Solvents and Extraction Methods

Zhu Qing-shu

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Abstract

Effects of solvent types and extraction methods(Soxhlet extraction and microwave-assisted extraction) were investigated for effective recovery of fatty oils from Siberian cocklebur fruit.Among the five solvents tested(ethanol,ethyl acetate,acetone,dichloromethane and cycle-hexane),dichloromethane gave the highest recovery with Soxhlet extraction(SE),and ethanol gave the highest recovery with microwave-assisted extraction(MAE).In addition,the fatty oil content of the MAE extract was found to be only slightly lower than that of SE,but MAE was shown to permit comparable extraction efficiency with 30-fold reduction in extraction time and 2-fold reduction in solvent consumption.

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What this paper is about

Effects of solvent types and extraction methods(Soxhlet extraction and microwave-assisted extraction) were investigated for effective recovery of fatty oils from Siberian cocklebur fruit.Among the five solvents tested(ethanol,ethyl acetate,acetone,dichloromethane and cycle-hexane),dichloromethane gave the highest recovery with Soxhlet extraction(SE),and ethanol gave the highest recovery with microwave-assisted extraction(MAE).In addition,the fatty oil content of the MAE extract was found to be only slightly lower than that of SE,but MAE was shown to permit comparable extraction efficiency with 30-fold reduction in extraction time and 2-fold reduction in solvent consumption.

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Available abstract

Effects of solvent types and extraction methods(Soxhlet extraction and microwave-assisted extraction) were investigated for effective recovery of fatty oils from Siberian cocklebur fruit.Among the five solvents tested(ethanol,ethyl acetate,acetone,dichloromethane and cycle-hexane),dichloromethane gave the highest recovery with Soxhlet extraction(SE),and ethanol gave the highest recovery with microwave-assisted extraction(MAE).In addition,the fatty oil content of the MAE extract was found to be only slightly lower than that of SE,but MAE was shown to permit comparable extraction efficiency with 30-fold reduction in extraction time and 2-fold reduction in solvent consumption.

Key concepts: Chemistry, Dichloromethane, Extraction (chemistry), Acetone, Chromatography, Hexane, Solvent, Ethyl acetate

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