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Efficient lipid extraction and quantification of fatty acids from algal biomass using accelerated solvent extraction (ASE)

机译:使用加速溶剂萃取(ASE)高效脂质提取和脂肪酸脂肪酸的定量

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Accelerated solvent extraction (ASE), a commercially available pressurized fluid extraction technique and conventional manual extraction were compared to identify the most effective chloroform–methanol extraction method for algal lipids. Using optimal ASE operating conditions (methanol/chloroform = 2?:?1 by vol, 100 °C, static time of 5 min, and four static cycles), the lipid contents of Chlorella vulgaris , C. sorokiniana , C. zofingiensis and Nannochloropsis gaditana were 27.5%, 25.8%, 15.2%, 29.8% of dry biomass, respectively. The total fatty acid methyl ester (FAME) content of dry biomass from ASE extraction was found to be 1.3–2.7 fold higher than that from conventional manual extract from these species, demonstrating that ASE exhibited significant improvement for lipid and FAME recovery. Furthermore, ASE showed the capacity to extract all- cis -5,8,11,14,17-eicosapentaenoic acid (EPA) as 3.0% of dry biomass from Nannochloropsis gaditana suggesting that ASE has the potential to obtain polyunsaturated fatty acids (PUFAs) as well.
机译:加速溶剂萃取(ASE),比较市售的加压流体提取技术和常规手动提取,以鉴定藻类脂质的最有效的氯仿 - 甲醇提取方法。使用最佳ASE操作条件(甲醇/氯仿= 2?:α1,通过Vol,100°C,静态时间为5分钟,静态循环和四个静态循环),Callella Ventaris的脂质含量,C.Sorokiniana,C. Zofingiensis和Nannchloropsis Gaditana分别为27.5%,25.8%,15.8%,29.8%的干生物量。从ASE提取的干生物质的总脂肪酸甲酯(DAME)含量比来自这些物种的常规手术提取物高1.3-2.7倍,表明ASE表现出脂质和名望恢复的显着改善。此外,ASE表明,从Nannchloropsis Gaditana提取All-CIS-1,8,11,14,117- eicosapentaeno的酸(EPA)的能力,表明ASE有可能获得多不饱和脂肪酸(PUFA)也是。

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