Institute of Hydrobiology, Department of Ecology, Jinan University, Guangzhou 510632, PR China; School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, PR China.
Institute of Hydrobiology, Department of Ecology, Jinan University, Guangzhou 510632, PR China.
Bioresour Technol. 2020 Nov;316:123902. doi: 10.1016/j.biortech.2020.123902. Epub 2020 Jul 25.
Tribonema minus was cultivated in different concentrations of sugarcane wastewater (SW) diluted with mBG-11 medium to produce biomass for biodiesel, bioproduct, and biomaterial production. The results showed that T. minus grew mixotrophically in 50%SW, with the highest biomass accumulation (7.86 g/L) and nutrient removal efficiency (84.85% of nitrogen, 62.57% of phosphorus, and 44.72% of COD). Excluding 100%SW, the chrysolaminarin and cellulose contents increased with increasing SW concentration; the highest contents of 8.11% and 25.69% dry weight were reached in 75%SW, respectively. Although fewer lipids and palmitoleic acid accumulated at higher SW concentrations, their productivities were significantly higher than those in the control due to the higher contribution of biomass. Moreover, the fatty acid profiles produced at the tested concentrations showed superior biodiesel properties. These findings suggested that the addition of mBG-11 medium to SW might be an effective strategy for valuable biomass production in T. minus and SW bioremediation.
在不同浓度的甘蔗废水（SW）中培养了 Tribonema minus，该 SW 是用 mBG-11 培养基稀释而成的，目的是生产生物柴油、生物制品和生物材料所需的生物质。结果表明，T.minus 在 50%SW 中以混合营养方式生长，具有最高的生物质积累（7.86 g/L）和养分去除效率（氮 84.85%，磷 62.57%，COD 44.72%）。除 100%SW 外，随着 SW 浓度的增加，金藻昆布糖和纤维素的含量增加；在 75%SW 中分别达到了 8.11%和 25.69%干重的最高含量。尽管在较高的 SW 浓度下积累的脂质和棕榈油酸较少，但由于生物质的贡献更高，它们的生产力明显高于对照。此外，在测试浓度下产生的脂肪酸谱表现出优异的生物柴油性能。这些发现表明，在 mBG-11 培养基中添加 SW 可能是在 T.minus 和 SW 生物修复中生产有价值生物质的有效策略。
