Enhanced Lipid Production by Adding Digested Chicken Manure Filtrate in Culture Chlorella protothecoides

doi:10.3969/j.issn.1673-1689.2017.06.003

Home > Archive>Volume 36, Issue 6, 2017 >576-582. DOI:10.3969/j.issn.1673-1689.2017.06.003

Enhanced Lipid Production by Adding Digested Chicken Manure Filtrate in Culture Chlorella protothecoides
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                        10.3969/j.issn.1673-1689.2017.06.003
                    
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The degradation of chicken manure was optimized and digested chicken manure filtrate (DCMF) was added to promote cells growth and lipid production in heterotrophic culture Chlorella protothecoides. Higher and low nitrogen DCMF were obtained by controlling dissolved oxygen (DO) level. Based on the fact that higher nitrogen DCMF favored cells growth but retarded lipid accumulation and vice versa for lower nitrogen DCMF, a two-step DCMF supplementation of feeding higher nitrogen DCMF (15 ml/L/D) at the cell growth phase (0~120 h) and lower one (15 ml/L/D) at the stationary phase(120~200 h) was adopted to enhance lipid production. Moreover, the strategies of DCMF supplementation coupled with adenosine triphosphate (ATP) regeneration from glucose feeding (1.5 g/L/D) were developed. Experimental results showed that lipid yield of 5.28 g/L was achieved after 200 h 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.

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LIANG Guobin, WANG Bin, LIN Wei, ZHU Hua, HE Qinting, ZHOU Quanfa. Enhanced Lipid Production by Adding Digested Chicken Manure Filtrate in Culture Chlorella protothecoides[J]. Journal of Food Science and Biotechnology,2017,36(6):576-582.

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