Media optimization design towards maximizing biomass production of Tetradesmus obliquus under mixotrophic conditions

被引:4
作者
Bentahar, Jihed [1 ]
Deschenes, Jean-Sebastien [1 ]
机构
[1] Univ Quebec Rimouski, Dept Math Informat & Genie, Collectif Rech Appl Bioprocedes & Chim Environm CR, 300 Allee Ursulines, Rimouski, PQ G5L 3A1, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
Microalgae; Biomass production; Taguchi method; Medium composition optimization; Mixotrophic production; SCENEDESMUS-OBLIQUUS; GROWTH; CALCIUM; MICROALGAE; CULTIVATION; PHOSPHORUS; MAGNESIUM; SULFATE;
D O I
10.1016/j.biteb.2021.100885
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Maximizing biomass production is a key factor in developing large-scale microalgae cultivation. One major aspect to address is the cultivation medium composition in regards to the process objective. In this study, the effect of eight important nutrients/factors (glucose, nitrate, phosphate, sulfate, magnesium, iron, manganese, and calcium) and their interactions were investigated on the biomass production of the microalgae Tetradesmus obliquus under mixotrophic conditions. The Taguchi method, a robust tool for experimental design optimization, was used to find the optimum media composition for biomass production, with only a few well-defined experimental sets. Using Taguchi's L18 orthogonal array resulted to a 4-fold enhancement in biomass yields, with a maximum of about 7.98 g/L. Nitrate exhibited the most significant effect. Iron and phosphate showed a strong influence on short-term cultivations (6 to 9 days), while glucose and calcium had more impact on long-term cultivations (15 days). The overall optimum experimental conditions were provided.
引用
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页数:8
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