Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea.
Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea; Institute of Life Science and Natural Resources, Korea University, Seoul 02841, Republic of Korea.
Bioresour Technol. 2023 Jan;367:128066. doi: 10.1016/j.biortech.2022.128066. Epub 2022 Oct 4.
Cyanobacteria-derived biofuels can be helpful in achieving a circular bioeconomy. To increase the production of biodiesel/bioethanol from cyanobacterium, Pseudanabaena mucicola GO0704, mixotrophic cultivation using volatile fatty acid (VFA), a cheap organic carbon source, was performed. The treatment of butyric acid or acetic acid enhanced the cell growth, particularly, the dry weight of the butyric acid-treated cells was 2.30-fold higher than the control. The enhancement of the growth led to the increase of metabolite (i.e., lipid and carbohydrate) productions, resulting in high amount of biodiesel and bioethanol to be produced. Butyric acid was more effective compared to acetic acid and the productions of biodiesel (52.2 mg/L) and bioethanol (132.6 mg/L) from the butyric acid-treated P. mucicola GO0704 were 2.34- and 2.17-fold higher compared to the control, respectively. This study will provide a foundation to commercialize the cyanobacteria-based carbon-neutral fuels, and ultimately, achieve a circular bioeconomy.
蓝藻衍生生物燃料有助于实现循环生物经济。为了提高微囊藻属 GO0704 等蓝藻生物柴油/生物乙醇的产量，采用挥发性脂肪酸（VFA）作为廉价有机碳源进行混合营养培养。丁酸或乙酸处理能促进细胞生长，特别是丁酸处理组的干重是对照组的 2.30 倍。生长的增强导致代谢物（即脂质和碳水化合物）的产量增加，从而产生大量的生物柴油和生物乙醇。与乙酸相比，丁酸更有效，丁酸处理后的微囊藻属 GO0704 的生物柴油（52.2 mg/L）和生物乙醇（132.6 mg/L）产量分别比对照组高 2.34 倍和 2.17 倍。本研究将为蓝藻基碳中和燃料的商业化提供基础，最终实现循环生物经济。
