酶法醇解合成2-花生四烯酸单甘酯
Enzymatic synthesis of 2-arachidonoylglycerol by ethanolysis
  
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中文关键词:  2-花生四烯酸单甘酯  脂肪酶催化  醇解  微生物油
英文关键词:2-arachidonolyglycerol  lipase-catalyzed reaction  alcoholysis  microbial oil
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Author NameAffiliation
WANG Xiaosan, LI Houyue, WANG Zixin, FU Yijie, LIU Keying, HUANG Ye, CHEN Ye, ZHAO Xinchen, CHANG Ming School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China 
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中文摘要:
      2-花生四烯酸单甘酯(2-AG)是一种内源性大麻素,在神经、心血管和免疫等系统中具有一系列的生理活性。为实现2-AG的绿色高效制备,探究了脂肪酶催化醇解富含花生四烯酸的微生物油制备2-AG的方法。以2-单甘酯(2-MAG)含量为指标,通过单因素实验对酶法催化醇解反应条件进行了优化,并采用溶剂萃取法对产物进行纯化。结果表明:最佳反应条件为以Lipozyme 435脂肪酶为醇解脂肪酶、酶添加量4%(以油质量计)、油与无水乙醇物质的量比1∶ 40、叔丁醇为溶剂、油溶比2∶ 3、反应温度35 ℃、反应时间8 h,在最佳条件下粗产物中2-MAG含量为3363%;经溶剂萃取纯化后2-MAG的纯度达到了94.79%,其中2-AG含量为40.70%。 综上,酶法醇解富含花生四烯酸的微生物油可以获得高2-AG含量的2-MAG。
英文摘要:
      2-Arachidonoylglycerol (2-AG) is an endogenous cannabinoid and exhibits a variety of biological activities in the central nervous, cardiovascular, and immune systems. To prepare 2-AG in a greener and efficient way, a lipase-catalyzed alcoholysis of microbial oil rich in arachidonic acid was used to synthesize 2-AG. With the 2-monoacylglycerol (2-MAG) content as an index, the reaction conditions of lipase-catalyzed alcoholysis were optimized by single factor experiment, and a solvent extraction method was employed to purify the product. The results showed that the optimal reaction conditions of lipase-catalyzed alcoholysis were as follows: Lipozyme 435 as alcoholysis enzyme, lipase dosage 4% (relative to oil mass), molar ratio of oil to anhydrous ethanol 1∶ 40, tert-butanol as solvent, ratio of oil to solvent 2∶ 3, reaction temperature 35 ℃ and reaction time 8 h. Under the optimal conditions, 2-MAG content in the crude product was up to 33.63%. The purity of 2-MAG after purification was up to 9479%, and the content of 2-AG was 40.70%. In conclusion, enzymatic alcoholysis of microbial oil rich in arachidonic acid can obtain 2-MAG with high 2-AG content.
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