School of Food Sciences and Engineering, South China University of Technology, Wushan Rd. 381, Guangzhou 510641, PR China.
Institute of Ocean and Earth Sciences (IOES), University of Malaya, 50603 Kuala Lumpur, Malaysia.
Bioresour Technol. 2018 May;255:140-148. doi: 10.1016/j.biortech.2018.01.114. Epub 2018 Feb 4.
The single cell oil (SCO) production by the mono and mixed culture of microalgae Chlorella pyrenoidosa and red yeast Rhodotorula glutinis was investigated using non-detoxified cassava bagasse hydrolysate (CBH) as carbon source. The results suggested that the two strains were able to tolerate and even degrade some byproducts presented in the CBH, and the mixed culture approach enhanced the degradation of certain byproducts. Biomass (20.37 ± 0.38 g/L) and lipid yield (10.42 ± 1.21 g/L) of the mixed culture achieved in the batch culture were significantly higher than that of the mono-cultures (p < 0.05). The fed-batch culture further raised the biomass and lipid yield to 31.45 ± 4.93 g/L and 18.47 ± 3.25 g/L, respectively. The lipids mainly composed of oleic acid and palmitic acid, suggesting the potential applications such as biofuel feedstock, cosmetics, food additives and lubricant. This study provided new insights for the integration of the economical SCO production with agro-industrial waste disposal.
利用未经解毒的木薯渣水解液（CBH）作为碳源，研究了小球藻（Chlorella pyrenoidosa）和红酵母（Rhodotorula glutinis）的单种和混合培养物生产单细胞油（SCO）的情况。结果表明，两种菌株能够耐受甚至降解 CBH 中的某些副产物，而混合培养方法增强了某些副产物的降解。在分批培养中，混合培养的生物量（20.37±0.38 g/L）和产油量（10.42±1.21 g/L）明显高于单培养（p<0.05）。补料分批培养进一步将生物量和产油量提高到 31.45±4.93 g/L 和 18.47±3.25 g/L。脂质主要由油酸和棕榈酸组成，表明其在生物燃料原料、化妆品、食品添加剂和润滑剂等方面具有潜在应用。本研究为经济 SCO 生产与农业工业废物处理的整合提供了新的见解。
