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Quality characteristic of Omija (Schizandra chinensis Baillon) seed oils by roasting conditions and extraction methods
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  • Journal title : Korean Journal of Food Preservation
  • Volume 22, Issue 6,  2015, pp.845-850
  • Publisher : The Korean Society of Food Preservation
  • DOI : 10.11002/kjfp.2015.22.6.845
 Title & Authors
Quality characteristic of Omija (Schizandra chinensis Baillon) seed oils by roasting conditions and extraction methods
Lee, Hyeon-Jeong; Cho, Jeong-Seok; Lee, Yeong-Min; Choi, Ji-Young; Sung, Jun-Hyung; Chung, Hun-Sik; Moon, Kwang-Deog;
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The influence of different roasting temperatures, times and extraction methods on the quality characteristics of Omija (Schizandra chinensis) seed oils was investigated. Roasted Omija seeds were divided into five groups based on roasting temperature-time conditions: no roasting (Raw) and roasting [R11: , 10 min, R12: , 20 min, R21: , 10 min, R22: , 20 min (R22)]. Oils from each of the raw and roasted Omija seeds were obtained by solvent (n-hexane) and press (machine) extraction. The values decreased, but the and values increased with increasing the roasting temperature and time. The values were lower in the press-extracted oils than in the solvent-extracted oils. The peroxide value (POV) of Omija seed oils decreased with increasing the roasting temperature-time values. The POV value was higher in the press-extracted oils than in the solvent-extracted oils. ABTS (2, 2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid)) radical inhibition of Omija seed oils was higher in the solvent-extracted oils than in the press-extracted oils, but there were no significant differences between the two oils. The four major kinds of fatty acid methyl esters detected in Omija seed oils were methyl butyrate, methyl hexanoate, methyl arachidate, and methyl eicosanoate. In conclusion, Omija seed oils obtained by solvent extraction and at higher roasting temperature-time values were more effective antioxidants.
Schizandra chinensis;seed oils;quality;peroxide value;fatty acid methyl ester;
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