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Journal of Chemistry
Volume 2018, Article ID 9649062, 6 pages
Research Article

Homogenate Extraction of Crocins from Saffron Optimized by Response Surface Methodology

1College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China
2Department of Clinical Biochemistry, Faculty of Medical Sciences, Tarbiat Modares University, P.O. Box 14115-133, Tehran, Iran

Correspondence should be addressed to Ping Wang; nc.ude.tujz@54gnipgnaw

Received 29 August 2017; Accepted 12 October 2017; Published 18 January 2018

Academic Editor: Mostafa Khajeh

Copyright © 2018 Yingpeng Tong 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.


Saffron, which has many kinds of biological activities, has been widely used in medicine, cosmetics, food, and other fields of health promotion industries. Crocins are the main component of saffron (Crocus sativus L.). At present, most of the extraction methods for crocins require long time or special instruments to complete the process and some of them are not suitable for industrial production at present. In this article, homogenate extraction technology which is a convenient and efficient method was developed for crocins extraction from saffron. Firstly, the influences of extraction voltage, extraction time, ethanol concentration, and temperature on crocins yield were studied by single factor experiments; and then response surface methodology (RSM) was used to optimize levels of four variables based on the result of single factor experiments. Results showed that the optimum extraction process conditions for crocins were as follows: extraction voltage, 110 V; ethanol concentration, 70%; extraction temperature, 57°C; and extraction time, 40 s. Based on these conditions, the extraction yield of crocins can reach 22.76% which is higher than ultrasonic extraction method. Therefore, homogenate extraction is an effective way to extract crocins from saffron with higher extraction yield and shorter extraction time.