利用多菌种共培养降解橡椀单宁制备鞣花酸  

PREPARATION OF ELLAGIC ACID FROM BIODEGRADATION OF VALONIA TANNIN BY MULTI-STRAIN CO-CULTIVATION

作　　者：黄文[1] 石碧[1] 李庆[2] 姚开[2] 

机构地区：[1]四川大学皮革化学与工程教育部重点实验室,四川成都610065 [2]四川大学轻工与食品工程学院,四川成都610065

出　　处：《林产化学与工业》2002年第1期21-24,共4页Chemistry and Industry of Forest Products

基　　金：国家自然科学基金资助项目 (2 9872 0 2 5 )

摘　　要：以橡单宁为原料 ,通过培养、分离筛选出了 14种菌株。研究了单一菌株培养和混合菌株共培养对橡单宁生物降解的影响 ,证实了用降解速率快但耐单宁性较差的菌株与耐单宁性好但降解速率较慢菌株共培养 ,可以显著提高橡单宁的生物转化率和鞣花酸的产率 ,两者分别达到 6 8%和 2 3%。Using valonia extract as substrate,14 strains were cultivated and selected.Effects of single strain cultivation and co cultivation of strains on biodegradation of valonia tannin were investigated.It was showed that both bioconversion rate of valonia tannin and yield of ellagic acid would be remarkably increased when co cultivation of strains 1 # and 3 # was employed.The former is the strain that has faster degradation rate of tannin with weaker tannin resistance;the later is the one that has stronger resistance to tannin with slower degradation rate.Co cultivation at 28?℃ for 8 days results in 68% bioconversion rate of valonia tannin and 23% yield of ellagic acid,which provides an effective way to produce ellagic acid from valonia tannin.

关 键 词：橡宛单宁 鞣花酸 生物降解 混合菌培养 降解速率 植物单宁 

分 类 号：TQ943.2[化学工程]