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Molecular characterization of blue-green algae (Anabaena constricta) and comparative studies of biodiesel production from other species
Indian Journal of Chemical Technology ( IF 0.5 ) Pub Date : 2021-06-10
Vinaya Tiwari, Alok Das, Shallu Thakur, R K Trivedi

Biodiesel can substitute fossil fuels adequately and thus, considered ‘future fuel’. Thus, identifying a promising algal strain for efficient biodiesel production is a very important endeavor. In the present investigation, the blue green algae, Anabaena constricta could be grown aseptically attaining exponential phase, 3 days post inoculation, responds to phototropism and amenable to both autotrophic and heterotrophic mode. Phylogenetic analysis reveal that Anabaena constricta grouped separately from other algal strains used in the study, making it unique in nature. Further, comparative studies of selected algal and blue green algal strains based on the oil percentage and fatty acid profile indicate potential biodiesel properties. The total lipid content of Anabaena constricta is estimated to 14% of the dry weight, and fatty acids profiling indicate presence of 11 fatty acid methyl esters (FAMEs), principally palmitic acid (16:0), oleic acids (18:1), linoleic acid (18:2), palmitoleic acid (16:1). The algal species, Hydrodictyon registered highest percentage of unsaturated fatty acids (59.5%), while highest content of saturated fatty acid was found in Anabaena constricta (51.5%). Cetane Number of seven algal and blue green algal biodiesel varied from 54.77 to 58.2 and Saponification Value varied from 205.6 to 211.39. PROMETHEE & GAIA analyses indicate both the Rhizoclonium and Tolypothrix species outranked while Hydrodictyon and Anabaena constricta are the least suitable species in seven algal and blue-green algal species studied for biodiesel production. Well-characterized strains offer promise for biodiesel production at a cost-effective level. The present study focus on the renewable fuel, which is useful for reducing the carbon footprint with potential to impact self-sustainability in fuel sector, without modification in current infrastructure.

中文翻译:

蓝绿藻(Anabaena constricta)的分子特征和其他物种生物柴油生产的比较研究

生物柴油可以充分替代化石燃料,因此被认为是“未来燃料”。因此,鉴定一种用于有效生产生物柴油的有前途的藻类菌株是一项非常重要的工作。在本研究中,蓝绿藻Anabaena constricta可以在接种后 3 天达到指数期无菌生长,对向光性有反应,并适合自养和异养模式。系统发育分析表明,Anabaena constricta与研究中使用的其他藻类菌株分开分组,使其在自然界中独一无二。此外,基于油百分比和脂肪酸分布的选定藻类和蓝绿藻菌株的比较研究表明潜在的生物柴油特性。总脂质含量Anabaena constricta估计占干重的 14%,脂肪酸分析表明存在 11 种脂肪酸甲酯 (FAME),主要是棕榈酸 (16:0)、油酸 (18:1)、亚油酸 (18: 2)、棕榈油酸(16:1)。藻类Hydrodictyon的不饱和脂肪酸含量最高 (59.5%),而在Anabaena constricta中发现的饱和脂肪酸含量最高(51.5%)。七藻和蓝绿藻生物柴油的十六烷值从 54.77 到 58.2 不等,皂化值从 205.6 到 211.39 不等。PROMETHEE&GAIA分析表明两者RhizocloniumTolypothrix而级别比种水网在研究用于生产生物柴油的七种藻类和蓝绿藻类中,Anabaena constricta是最不适合的物种。充分表征的菌株有望以具有成本效益的水平生产生物柴油。本研究侧重于可再生燃料,它有助于减少碳足迹,并有可能影响燃料部门的自我可持续性,而无需修改当前的基础设施。
更新日期:2021-06-10
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