文献类型： 会议论文

第一作者： Fengxiang Yu

作者： Fengxiang Yu ¹ ; Xu Chen ² ; Qinlu Lin ³ ; Wei Xiaojun ⁴ ;

作者机构： 1.National Engineering Laboratory for Rice and By-product Further Processing, Central South University of Forestry & Technology, Changsha 410004,China Department of Food Science and Technology, Hunan Biological Electromechanical Polytechnic, Changsha 410127, China Faculty of Food Science and Engineering, Central South University of Forestry & Technology, Changsha 410004, China

2.Hunan Academy of Agricultural Sciences, Changsha 410125, China

3.National Engineering Laboratory for Rice and By-product Further Processing, Central South University of Forestry & Technology, Changsha 410004,China Faculty of Food Science and Engineering, Central South University of Forestry & Technology, Changsha 410004, China

4.Department of Food Science and Technology, Hunan Biological Electromechanical Polytechnic, Changsha 410127, China

关键词： Rice bran oil;Fatty acid;Gas chromatography

会议名称： Conference on intelligent information, control, and communication technology for agricultural engineering

主办单位：

页码： 87621E.1-87621E.8

摘要： To assess the nutritional value and safety quality of rice bran oil (RBO) ,fatty acids of RBO from 15 species rice come from Hunan Province were analyzed by high resolution gas chromatography (HRGC). Crude RBOs were extracted by hexane 3-times using a solvent-to-rice bran ratio of 3:1 (w/w) at 40℃ and composition of RBOs was analyzed by HRGC. The result showed that main fatty acids of 15 kinds of RBO include myristic acid ( C14:0 ) , palmitic acid ( C16:0 ) , palmitoleic acid ( C16:l ) , stearic acid ( C18:0 ) , oleic acid ( C18:1 ) , linoleic acid ( C18:2 ) , linolenic acid ( C18:3 ) , arachidic acid ( C20:0 ) , arachidonic acid ( C20:1 ) . It is strange that arachidonic acid ( C20:1 ) is not listed in Chinese standard of RBO (GB11192-2003), and it exists in our samples of RBO. The average value of linolenic acid in RBOs is 1.6304% (range from 1.2425% to 2.131%), and it showed higher level comparing with Chinese standard that linolenic acid is less than 1.0%. The average value of USFA and SFA are 76.81% (range 75.96% to 82.06% )and 20.15% (range 13.72% to 23.06%) respectively, and USFA content is close to olive oil (83.75%), peanut oil ( 81.75% ) and soybean oil ( 85.86% ) . USFA in Jingyou 13 RBO is the highest content. The ratio of USFA to SFA content is 4:1 (range from 3.32 to 5.98:1). The ratio of SFA: MUFA: PUFA of 15 RBOs is 1: 2.2: 1.8, and ω6/ω3 ratio is 21.69 (range from16.54 to 27.28) and it is close to the 26:1 which is reported to be helpful to increase SOD activity. The oleic acid /linoleic acid ratio of 15 RBOs is 1.23:1 (rang from 1.04:1 to 1.42:1). Our data analyzed composition of RBOs from 15 species rice of China and will provide new evidence to revise RBO standard. It also helps us to assess nutritional value of RBOs and identify different RBOs from various species rice and places of origin.

分类号： tp391