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首页> 外文期刊>International journal of green energy >Molasses-based growth and lipid production by Chlorella pyrenoidosa: A potential feedstock for biodiesel
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Molasses-based growth and lipid production by Chlorella pyrenoidosa: A potential feedstock for biodiesel

机译：小球藻基于糖蜜的生长和脂质生产：生物柴油的潜在原料

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摘要

Biodiesel provides a feasible solution to the twin crisis of energy security and environmental concerns prevalent today, and it can be extracted from conventional oil crops as well as microalgae. However, lipid productivity in case of microalgae is much higher and has several advantages as compared with crop plants, so it is a better feedstock for biodiesel. In case of Chlorella pyrenoidosa, the heterotrophic cultured cells were found to be better in terms of lipid production, and ultimately biodiesel production, but the bottleneck is that in this mode glucose is used to feed the cells, which amounts to almost 80% of the total cost of biodiesel production. The purpose of this study is to evaluate and highlight the feasibility of using the industrially cheap cane molasses as a carbon source in place of glucose for a large-scale, low-cost lipid production of Chlorella pyrenoidosa. When treated molasses was used as a carbon source instead of glucose, the biomass sharply increases from 0.89 to 1.22 g L-1. On the other hand, the total lipid content increases from 0.27 to 0.66 g g(-1). The specific growth rate and yield was higher in treated molasses as compared with that in glucose-supplemented. A mathematical model was also developed based on logistic, Luedeking-Piret, and Luedeking-Piret-like equations. Model predictions were in satisfactory agreement with the measured data, and the mode of lipid production was growth-associated.
机译：生物柴油为解决当今普遍存在的能源安全和环境问题的双重危机提供了可行的解决方案，可以从常规油料作物和微藻中提取。但是，与藻类植物相比，微藻情况下的脂质生产率更高，并且具有多个优势，因此它是生物柴油的较好原料。就小球藻而言，发现异养培养的细胞在脂质生产和最终生物柴油生产方面都更好，但瓶颈是在这种模式下，葡萄糖被用于喂养细胞，几乎占葡萄糖的80％。生物柴油生产的总成本。这项研究的目的是评估并强调使用工业上便宜的甘蔗糖蜜作为碳源代替葡萄糖用于大规模，低成本生产小球藻的脂质的可行性。当使用处理过的糖蜜代替葡萄糖作为碳源时，生物量从0.89 g L-1急剧增加。另一方面，总脂质含量从0.27 g（-1）增加到0.66 g g（-1）。与补充葡萄糖的糖蜜相比，处理过的糖蜜的比生长速率和产量更高。还基于logistic，Luedeking-Piret和类似Luedeking-Piret的方程式开发了数学模型。模型预测与实测数据令人满意，并且脂质产生的模式与生长相关。

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