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›› 2013, Vol. 33 ›› Issue (2): 49-54.doi: 10.3969/j.issn.0253-2417.2013.02.008

• 研究报告 • Previous Articles     Next Articles

Separation and Characterization of Polyunsaturated Fatty Acids from Rubber Seed Oil

YANG Jing1,3, XIE Chao1, XU Juan2, HUANG Yuan-bo1,3, LIU Shou-qing2, ZHENG Yun-wu1,3, ZHENG Zhi-feng1,3   

  1. 1. College of Materials Engineering, Southwest Forestry University, Kunming 650224, China;2. School of Science, Southwest Forestry University, Kunming 650224, China;3. Key Laboratory of Forest Resources Conservation and Use in the Southwest Mountains of China (SWFU), Ministry of Education, Southwest Forestry University, Kunming 650224, China
  • Received:2012-10-10 Revised:1900-01-01 Online:2013-04-30 Published:2013-04-30

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Abstract: The separation of polyunsaturated fatty acids (PUFA) from rubber seed oil by urea complex fractionation was studied. Reaction conditions of urea inclusion were optimized using orthogonal test method. The fatty acid composition was determined after ethyl esterification by gas chromatography (GC). The maximum purity of PUFA was over 96 % with the ratio of recovery up to 35 % under optimal conditions at urea-to-fatty acids ratio of 55:30(g:g), methanol-to-urea ratio of 130:55(mL:g), reaction temperature of 65 ℃, reaction time of 150 min, crystallization temperature of -5 ℃, and crystallization time of 18 h, respectively. The components of separated PUFA from rubber seed oil contain 56.95 % of linoleic acid (C18:2), 40.28 % of linolenic acid (C18:3), respectively. Only 2.77 % of oleic acid (C18:1) was charaeterized in the product.

Key words: rubber seed oil, polyunsaturated fatty acids, urea inclusion

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