Temperature effects on lipid properties of microalgae Tetraselmis subcordiformis and Nannochloropsis oculata as biofuel resources  

作　　者：危立坤 黄旭雄 黄征征 

机构地区：[1]Key Laboratory of Freshwater Fishery Germplasm Resources,Ministry of Agriculture,China [2]Shanghai Engineering Research Center of Aquaculture [3]Shanghai University Knowledge Service Platform,Shanghai Ocean University Aquatic Animal Breeding Center(ZF1206)

出　　处：《Chinese Journal of Oceanology and Limnology》2015年第1期99-106,共8页中国海洋湖沼学报（英文版）

基　　金：Supported by the National High Technology Research and Development Program of China(863 Program)(No.2009AA064401);the Special Fundation for Marine Renewable Energy from the State Oceanic Administration of China(No.SHME2011SW02);the Shanghai Universities First-class Disciplines Project of Fisheries(A)

摘　　要：Microalgae Tetraselmis subcordiformis and Nannochloropsis oculata were cultured at 15,20,25,30,and 35℃ and their properties as potential biofuel resources were examined.The results indicate that T.subcordiformis and N.oculata grew best at 20℃ and 25℃ and yielded the highest total lipids at 20℃and 30℃,respectively.With increased temperature,neutral lipid and polyunsaturated fatty acids(FAs)decreased while saturated FAs increased,accompanied by increased monounsaturated FAs(MUFAs) in T.subcordiformis and decreased MUFAs in N.oculata;meanwhile,the predicted cetane number of FA methyl esters increased from 45.3 to 47.6 in T.subcordiformis and from 52.3 to 60.3 in N.oculata.Therefore,optimizing culture temperatures is important for improving microalgal biodiesel production.Microalgae Tetraselmis subcordiformis and Nannochloropsis oculata were cultured at 15, 20, 25, 30, and 35℃ and their properties as potential biofuel resources were examined. The results indicate that T. subcordiformis and N. oculata grew best at 20℃ and 25℃ and yielded the highest total lipids at 20℃ and 30℃, respectively. With increased temperature, neutral lipid and polyunsaturated fatty acids （FAs） decreased while saturated FAs increased, accompanied by increased monounsaturated FAs （MUFAs） in T. subcordiformis and decreased MUFAs in N. oculata; meanwhile, the predicted cetane number of FA methyl esters increased from 45.3 to 47.6 in T. subcordiformis and from 52.3 to 60.3 in N. oculata. Therefore, optimizing culture temperatures is important for improving microalgal biodiesel production.

关 键 词：fatty acids （FAs） lipid class Nannochloropsis oculata temperature Tetraselmis subcordiformis total lipid 

分 类 号：S917.3[农业科学—水产科学]