Continuous cultivation of Arthrospira platensis for phycocyanin production in large-scale outdoor raceway ponds using microfiltered culture medium

Jiajia Yu; Hancui Hu; Xiaodan Wu; Congchun Wang; Ting Zhou; Yuhuan Liu; Roger Ruan; Hongli Zheng

doi:10.1016/j.biortech.2019.121420

Continuous cultivation of Arthrospira platensis for phycocyanin production in large-scale outdoor raceway ponds using microfiltered culture medium

Bioresour Technol. 2019 Sep:287:121420. doi: 10.1016/j.biortech.2019.121420. Epub 2019 May 10.

Authors

Jiajia Yu¹, Hancui Hu¹, Xiaodan Wu¹, Congchun Wang¹, Ting Zhou¹, Yuhuan Liu¹, Roger Ruan², Hongli Zheng³

Affiliations

¹ MOE Biomass Energy Research Center and College of Food Science and Technology and State Key Laboratory of Food Science and Technology, Nanchang University, 235 East Nanjing Road, Nanchang, Jiangxi 330047, People's Republic of China.
² MOE Biomass Energy Research Center and College of Food Science and Technology and State Key Laboratory of Food Science and Technology, Nanchang University, 235 East Nanjing Road, Nanchang, Jiangxi 330047, People's Republic of China; Center for Biorefining and Department of Bioproducts and Biosystems Engineering , University of Minnesota, 1390 Eckles Avenue, St. Paul, MN 55108, United States.
³ MOE Biomass Energy Research Center and College of Food Science and Technology and State Key Laboratory of Food Science and Technology, Nanchang University, 235 East Nanjing Road, Nanchang, Jiangxi 330047, People's Republic of China. Electronic address: honglizheng@ncu.edu.cn.

PMID: 31096101
DOI: 10.1016/j.biortech.2019.121420

Abstract

In the present study, the effect of filtrating algal culture medium for reuse by using microfiltration membranes on microalgal growth, microbiological contamination, and phycocyanin production of Arthrospira platensis was investigated. Results showed that microfiltered culture medium affected microalgal growth, microbiological contamination, and phycocyanin production of A. platensis significantly. Microfiltered culture medium could enhance biomass production, photosynthesis, and phycocyanin accumulation and decrease microbiological contamination during continuous cultivation of A. platensis compared to the control. The profile of microbial communities, which contained the 10 phyla of microorganisms including bacteria and microzooplanktons, was identified for the first time for industrial algae systems of A. platensis with extreme conditions (salt-alkaline stress conditions). The application of the established strategy can enhance phycocyanin production of A. platensis while mitigating microbiological contamination.

Keywords: Microalga; Microbial community; Microbiological contamination; Microfiltration; Phycocyanin production.

MeSH terms

Biomass
Culture Media
Phycocyanin*
Ponds
Spirulina*

Substances

Culture Media
Phycocyanin