从产油酵母中提取的脂质经酸催化酯交换反应制备生物柴油的比较分析
Comparative analysis of biodiesel produced by acidic transesterification of lipid extracted from oleaginous yeast .
作者信息
Singh Gunjan, Jeyaseelan Christine, Bandyopadhyay K K, Paul Debarati
机构信息
1Amity Institute of Biotechnology, Amity University, Sec 125, Noida, Uttar Pradesh 201313 India.
2Amity Institute of Applied Sciences, Amity University, Noida, India.
出版信息
3 Biotech. 2018 Oct;8(10):434. doi: 10.1007/s13205-018-1467-9. Epub 2018 Oct 3.
Abstract
This study investigated the potential of oleaginous yeast strain (ATCC20409) for the sustainable production of microbial lipids as biodiesel feedstock and other economically important fatty acids in comparison to algal or plant-based biodiesel. The strain exhibited high lipid content (76% of dry cell weight biomass) through consolidated bioprocessing which was transesterified to produce biodiesel. Physico-chemical properties of the biodiesel produced showed that they were in accordance with ASTM standards, although few parameters such as acid value, calorific value and free fatty acid value differed to some extent, as also reported in plant-based/microalgal biodiesel. Fatty acid methyl esters analysis of biodiesel showed 50.18% unsaturated fatty acid and 49.81% saturated fatty acid. Total content of (monounsaturated fatty acid) MUFA was higher than (polyunsaturated fatty acid) PUFA, being 44.36% and 2.69%, respectively. Considering the yield and cost, lipid extracted from may become a promising alternative feed in biodiesel production.
摘要
本研究调查了产油酵母菌株（ATCC20409）与藻类或植物基生物柴油相比，作为生物柴油原料可持续生产微生物脂质以及其他具有经济重要性的脂肪酸的潜力。该菌株通过整合生物加工表现出高脂质含量（占干细胞重量生物量的76%），经酯交换反应生产生物柴油。所生产生物柴油的物理化学性质表明，它们符合美国材料与试验协会（ASTM）标准，尽管酸值、热值和游离脂肪酸值等一些参数在一定程度上有所不同，植物基/微藻生物柴油也有类似报道。生物柴油的脂肪酸甲酯分析显示，不饱和脂肪酸含量为50.18%，饱和脂肪酸含量为49.81%。单不饱和脂肪酸（MUFA）的总含量高于多不饱和脂肪酸（PUFA），分别为44.36%和2.69%。考虑到产量和成本，从……中提取的脂质可能成为生物柴油生产中一种有前景的替代原料。 （注：原文中“从……中提取”处有缺失信息）
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