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Journal of Food Quality
Volume 2019, Article ID 2592731, 6 pages
https://doi.org/10.1155/2019/2592731
Research Article

Optimum Extraction Technology for the Seed Oil of Nigella sativa L.

1National R & D Center for Edible Fungus Processing Technology, Henan University, Kaifeng 475004, China
2Joint International Research Laboratory of Food & Medicine Resource Function, Henan University, Kaifeng 475004, China
3Kaifeng Key Laboratory of Functional Components in Health Food, Henan University, Kaifeng 475004, China
4Medicinal and Aromatic Plants Researches Department, Horticulture Research Institute, Agricultural Research Center, Giza 71625, Egypt

Correspondence should be addressed to Wenyi Kang; moc.liamtoh@ynewgnak

Received 11 April 2019; Revised 8 June 2019; Accepted 17 June 2019; Published 2 July 2019

Academic Editor: Anet Režek Jambrak

Copyright © 2019 Changyang Ma et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Seed oil of Nigella sativa L. is a popular edible oil in Egypt. How to improve the extraction efficiency of the oil will expand the use of the resource. In this paper, the four extraction factors, particle size of the seed, liquid-seed ratio, extraction time, and temperature, were optimized by the single-factor and orthogonal experiment to increase the extraction yield and linoleic acid concentration. The results showed that the twice extraction technology could increase the oil rate of 23.55% compared with the once extraction technology. The extraction rate of the once extraction could reach 33.51% under the conditions of liquid-seed ratio: 9 : 1 mL/g, extraction temperature: 35°C, extraction time: 1 h, and particle size: 60 meshes. The optimum twice extraction conditions with the extraction rate of 43.78% were 8 : 1 ml/g, 40°C, 1.5 h, and 60 meshes. Besides, the highest concentration of linoleic acid (58.09 mg/g) was twice extraction condition with 7 : 1 mL/g, 40°C, 2 h, and 60 meshes.