Optimization of digested chicken manure filtrate supplementation for lipid overproduction in heterotrophic culture Chlorella protothecoides

► Digested chicken manure filtrate (DCMF) was used to promote lipid production in C. protothecoides. ► Feeding higher nitrogen DCMF at cell growth phase enhanced cell concentration. ► Feeding lower nitrogen DCMF at stationary phase improved lipid content.. ► The strategies of DCMF supplementation co...

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Veröffentlicht in:Fuel (Guildford) 2013-06, Vol.108, p.159-165
Hauptverfasser: Liang, Guobin, Mo, Yiwei, Zhou, Quanfa
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Zhou, Quanfa
description ► Digested chicken manure filtrate (DCMF) was used to promote lipid production in C. protothecoides. ► Feeding higher nitrogen DCMF at cell growth phase enhanced cell concentration. ► Feeding lower nitrogen DCMF at stationary phase improved lipid content.. ► The strategies of DCMF supplementation coupled with glucose feeding maximized lipid production. This study was to investigate effects of digested chicken manure filtrate (DCMF) supplementation on cells growth and lipid production in heterotrophic culture Chlorella protothecoides. Higher nitrogen DCMF favored cells growth but retarded lipid accumulation and vice versa for lower nitrogen DCMF. Accordingly, a two-step DCMF supplementation method of feeding higher nitrogen DCMF at cell growth phase and lower one at the stationary phase was adopted to enhance lipid production. Moreover, based on the phenomenon that feeding glucose at the stationary phase can further enhance lipid production, the strategies of DCMF supplementation coupled with adenosine triphosphate (ATP) regeneration from glucose feeding were developed. As a result, total lipid yield of 5.28g/L was achieved after 200h cultivation, increased by 74.8% and 21.1% respectively, compared to the control and the one without glucose addition. It was suggested that application of DCMF combined with glucose feeding as being feasible for lipid overproduction.
doi_str_mv 10.1016/j.fuel.2013.02.003
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This study was to investigate effects of digested chicken manure filtrate (DCMF) supplementation on cells growth and lipid production in heterotrophic culture Chlorella protothecoides. Higher nitrogen DCMF favored cells growth but retarded lipid accumulation and vice versa for lower nitrogen DCMF. Accordingly, a two-step DCMF supplementation method of feeding higher nitrogen DCMF at cell growth phase and lower one at the stationary phase was adopted to enhance lipid production. Moreover, based on the phenomenon that feeding glucose at the stationary phase can further enhance lipid production, the strategies of DCMF supplementation coupled with adenosine triphosphate (ATP) regeneration from glucose feeding were developed. As a result, total lipid yield of 5.28g/L was achieved after 200h cultivation, increased by 74.8% and 21.1% respectively, compared to the control and the one without glucose addition. 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This study was to investigate effects of digested chicken manure filtrate (DCMF) supplementation on cells growth and lipid production in heterotrophic culture Chlorella protothecoides. Higher nitrogen DCMF favored cells growth but retarded lipid accumulation and vice versa for lower nitrogen DCMF. Accordingly, a two-step DCMF supplementation method of feeding higher nitrogen DCMF at cell growth phase and lower one at the stationary phase was adopted to enhance lipid production. Moreover, based on the phenomenon that feeding glucose at the stationary phase can further enhance lipid production, the strategies of DCMF supplementation coupled with adenosine triphosphate (ATP) regeneration from glucose feeding were developed. As a result, total lipid yield of 5.28g/L was achieved after 200h cultivation, increased by 74.8% and 21.1% respectively, compared to the control and the one without glucose addition. 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subjects Applied sciences
Chickens
Chlorella protothecoides
Culture
Digested chicken manure filtrate (DCMF)
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Feeding
Fuels
Glucose
Heterotrophic culture
Lipid production
Lipids
Manure
Strategy
title Optimization of digested chicken manure filtrate supplementation for lipid overproduction in heterotrophic culture Chlorella protothecoides
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