Microwave-assisted solvent extraction of castor oil from castor seeds

doi:10.1016/j.cjche.2018.07.009

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (12): 2516-2522.DOI: 10.1016/j.cjche.2018.07.009

• Separation Science and Engineering • 上一篇下一篇

Microwave-assisted solvent extraction of castor oil from castor seeds

Nur Atirah Ibrahim, Muhammad Abbas Ahmad Zaini

Centre of Lipids Engineering & Applied Research(CLEAR), Ibnu-Sina Institute for Scientific & Industrial Research, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia;School of Chemical & Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia

收稿日期:2017-10-21 修回日期:2018-07-05 出版日期:2018-12-28 发布日期:2019-01-09
通讯作者: Muhammad Abbas Ahmad Zaini
基金资助:
Supported by Universiti Teknologi Malaysia through 415 Flagship (Grant No. 03G70).

Microwave-assisted solvent extraction of castor oil from castor seeds

Nur Atirah Ibrahim, Muhammad Abbas Ahmad Zaini

Centre of Lipids Engineering & Applied Research(CLEAR), Ibnu-Sina Institute for Scientific & Industrial Research, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia;School of Chemical & Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia

Received:2017-10-21 Revised:2018-07-05 Online:2018-12-28 Published:2019-01-09
Contact: Muhammad Abbas Ahmad Zaini
Supported by:
Supported by Universiti Teknologi Malaysia through 415 Flagship (Grant No. 03G70).

摘要/Abstract

摘要： This study was aimed at evaluating the physicochemical properties and oxidation stability of castor oil using microwave-assisted solvent extraction (MAE). MAE was performed using 5% ethanol in hexane as solvent at different extraction times, power intensities and solvent-to-feed (S/F, ml of solvent to gram of feed) ratios. The process parameters were optimized by statistical approach using historical data design of response surface method (RSM). The oils were characterized for yield, physicochemical properties, dielectric properties and oxidation stability, and comparison was also made with oil extracted using Soxhlet method. Results show that the maximum oil yield of 37% was obtained at 20 min with microwave power intensity of 330 W and S/F ratio of 20. The main fatty acid composition of castor oil is ricinoleic acid. The density, refractive index, dielectric properties and oxidation stability of oils are not affected by the extraction methods and extraction parameters of MAE. However, the MAE-extracted oil is more viscous compared to that by Soxhlet method. With extra caution on oil oxidation, MAE could be a promising solvent extraction method with an 86% less in processing time and a higher yield.

关键词: Castor seed, Castor oil, Dielectric properties, Microwave-assisted solvent extraction, Oxidation stability

Abstract: This study was aimed at evaluating the physicochemical properties and oxidation stability of castor oil using microwave-assisted solvent extraction (MAE). MAE was performed using 5% ethanol in hexane as solvent at different extraction times, power intensities and solvent-to-feed (S/F, ml of solvent to gram of feed) ratios. The process parameters were optimized by statistical approach using historical data design of response surface method (RSM). The oils were characterized for yield, physicochemical properties, dielectric properties and oxidation stability, and comparison was also made with oil extracted using Soxhlet method. Results show that the maximum oil yield of 37% was obtained at 20 min with microwave power intensity of 330 W and S/F ratio of 20. The main fatty acid composition of castor oil is ricinoleic acid. The density, refractive index, dielectric properties and oxidation stability of oils are not affected by the extraction methods and extraction parameters of MAE. However, the MAE-extracted oil is more viscous compared to that by Soxhlet method. With extra caution on oil oxidation, MAE could be a promising solvent extraction method with an 86% less in processing time and a higher yield.

Key words: Castor seed, Castor oil, Dielectric properties, Microwave-assisted solvent extraction, Oxidation stability

Nur Atirah Ibrahim, Muhammad Abbas Ahmad Zaini. Microwave-assisted solvent extraction of castor oil from castor seeds[J]. Chinese Journal of Chemical Engineering, 2018, 26(12): 2516-2522.

Nur Atirah Ibrahim, Muhammad Abbas Ahmad Zaini. Microwave-assisted solvent extraction of castor oil from castor seeds[J]. Chin.J.Chem.Eng., 2018, 26(12): 2516-2522.

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Microwave-assisted solvent extraction of castor oil from castor seeds

Microwave-assisted solvent extraction of castor oil from castor seeds

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