Modeling of rhythmic behavior in neutral lipid production due to continuous supply of limited nitrogen: Mutual growth and lipid accumulation in microalgae

被引：21

作者：

Tevatia, Rahul ^{[1
,2
]}

Allen, James ^{[3
]}

Blum, Paul ^{[2
]}

Demirel, Yasar ^{[1
]}

Black, Paul ^{[3
]}

机构：

[1] Univ Nebraska, Dept Chem & Biomol Engn, Lincoln, NE 68588 USA

[2] Univ Nebraska, Sch Biol Sci, Lincoln, NE 68588 USA

[3] Univ Nebraska, Dept Biochem, Lincoln, NE 68588 USA

来源：

BIORESOURCE TECHNOLOGY | 2014年 / 170卷

基金：

美国国家科学基金会;

关键词：

Continuous nitrogen limitation; Microalgal growth; Neutral lipid accumulation; Prey-predator model; Maximum productivities; CONTINUOUS CULTURE; STARVATION; BIOFUELS; DYNAMICS; ALGAE;

D O I：

10.1016/j.biortech.2014.07.043

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The relative effects of three precise nitrogen limitation regimes on green micro-algae were assessed using the Trebouxiophycean alga Coccomyxa subellipsoidea grown in a chemostatic bioreactor system. The data provides further evidence that growth and triglyceride (TAG) accumulation are concurrent and independently proportional to the degree of nitrogen limitation in algae. Additionally, TAG accumulation was observed to proceed via oscillations with respect to time and percent dry weight quantity. The predator-prey model was applied to fit the experimental data and to obtain the physiological significance of these oscillations. The results determine the conditions of maximum neutral lipid productivity with respect to nitrate stress and highlight an area of potential future research. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：152 / 159

页数：8