Institute of Hydrobiology, Department of Ecology, Jinan University, Guangzhou 510632, People's Republic of China; School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, People's Republic of China.
Institute of Hydrobiology, Department of Ecology, Jinan University, Guangzhou 510632, People's Republic of China.
Bioresour Technol. 2019 Nov;292:121938. doi: 10.1016/j.biortech.2019.121938. Epub 2019 Aug 1.
This study focused on the feasibility of using different concentrations of tofu wastewater (TW) as alternative media for Tribonema minus cultures to produce valuable biorefinery feedstock. T. minus grew mixotrophically in 100% TW with larger carbohydrate (30.99% of dry weight (DW)), protein (15.56% of DW) and chrysolaminarin (6.93% of DW) accumulations than that of in mBG-11 medium. The highest biomass concentration, 7.77 g/L, was achieved in 100% TW, and nutrient removal efficiencies of T. minus at this concentration ranged from 60.49% to 93.60%. Although smaller neutral lipid and palmitoleic acid amounts were detected in 100% TW, their productivities reached 133.77 and 67.19 mg/L/d, respectively, due to the largest biomass yield contribution, which were comparable to those in mBG-11 medium. These findings demonstrated that TW is a promising alternative medium, and an integrated TW biotransformation and biomass valorization process is proposed to achieve better economic performance and environmental sustainability.
本研究着眼于使用不同浓度的豆腐废水（TW）替代 Tribonema minus 培养物的培养基的可行性，以生产有价值的生物炼制原料。T.minus 在 100%TW 中异养生长，积累的碳水化合物（干重的 30.99%）、蛋白质（干重的 15.56%）和 chrysolaminarin（干重的 6.93%）比在 mBG-11 培养基中更多。在 100%TW 中实现了最高的生物量浓度 7.77 g/L，并且在此浓度下 T.minus 的养分去除效率在 60.49%至 93.60%之间。尽管在 100%TW 中检测到的中性脂质和棕榈油酸含量较少，但由于最大的生物质产量贡献，其生产力分别达到 133.77 和 67.19 mg/L/d，与 mBG-11 培养基中的生产力相当。这些发现表明 TW 是一种很有前途的替代培养基，并提出了一种集成的 TW 生物转化和生物质增值过程，以实现更好的经济性能和环境可持续性。
