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首页> 外文期刊>Brazilian journal of chemical engineering >BIOCHEMICAL RESPONSES FROM BIOMASS OF ISOLATED CHLORELLA SP., UNDER DIFFERENT CULTIVATION MODES: NON-LINEAR MODELLING OF GROWTH KINETICS
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BIOCHEMICAL RESPONSES FROM BIOMASS OF ISOLATED CHLORELLA SP., UNDER DIFFERENT CULTIVATION MODES: NON-LINEAR MODELLING OF GROWTH KINETICS

机译：来自不同栽培模式下的生物量的生物化学反应，在不同栽培模式下：生长动力学的非线性建模

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摘要

In this study, the effect of different modes of cultivation viz., photoautotrophic (AT), heterotrophic (HT) and photomixotrophic (MT), on the growth and biochemical responses of Chlorella sp. isolated from local ponds. The performance of microalgal growth was quantified using nonlinear growth models such as Gompertz, logistic, Baranyi-Roberts, Morgan under different cultivation conditions. The results revealed that microalgae could grow better in MT than in other cultivation modes with a major increase in biochemical responses for carbohydrates, which showed higher accumulation under HT. The maximum biomass concentration was 1.24 g L-1 (MT), 1.16 g L-1 (HT), 0.76 g L-1 (AT) with maximum specific growth rates of 0.0083 h(-1) (HT), 0.0078 h(-1) (MT) and 0.0055 h(-1) (AT) respectively. The biomass concentration was higher in the order of MTHTAT for which MT yielded 8.8 fold higher biomass, compared with the initial biomass concentration, at the end of experiments (16 days). Concomitant increases in biochemical responses were observed in the three cultivation conditions. Protein and lipid accumulation in the MT mode was higher (1.2 fold) compared with the initial protein yield as well as the other cultivation modes. However, the carbohydrate yield was higher (1.12 fold) in the heterotrophic mode than in other cultivation conditions.
机译：在本研究中，不同培养模式的效果。，光学营养（AT），异养（HT）和光学激增（MT），对小球藻的生长和生化反应。与当地池塘隔绝。使用非线性生长模型如Gompertz，Logistic，Baranyi-Roberts，不同栽培条件下的摩根量定量了微藻生长的性能。结果表明，微藻含量比其他栽培模式在碳水化合物的生化反应大幅增加，其在HT下显示出较高的积累。最大生物质浓度为1.24g L-1（MT），1.16g L-1（HT），0.76g L-1（AT），最大比生长速率为0.0083h（-1）（HT），0.0078小时（ -1）（MT）和0.0055小时（-1）（AT）。在实验结束（16天）时，MT＆ HT＆GT; HT＆GT; HT> HT> HT＆GT;在实验结束（16天）的比较。在三种培养条件下观察到生化反应的伴随增加。与初始蛋白质产量以及其他培养模式相比，MT模式中的蛋白质和脂质积累更高（1.2倍）。然而，在异养模式中，碳水化合物产率高出（1.12倍）比其他栽培条件更高（1.12倍）。

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