Observation of Spirulina platensis cultivation in a prototype household bubble column photobioreactor during 107 days

Autor: Shudi Zhang, Fangfang Chen, Haiyue Pang, Yanfen Gao, Yonghuang Wen, Gueyhorng Wang
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Biotechnology & Biotechnological Equipment, Vol 35, Iss 1, Pp 1669-1679 (2021)
Druh dokumentu: article
ISSN: 1310-2818
1314-3530
13102818
DOI: 10.1080/13102818.2021.2003246
Popis: Fresh Spirulina is more favorable than dried one, yet its ease of deterioration necessitates production of biomass that can be immediately consumed. We developed a prototype household photobioreactor and studied the semi-continuous cultivation and harvest conditions within 107 days. Three growth phases were observed featuring different growth rate and recovering time after harvest. Nutrients were consumed at rates of Fe > N > P > Mg > K. The pH mounted rapidly when below 9 and varied slowly between 9 and 10, whose variation positively correlated with that of biomass concentration. Bacterial load was at a constant level of about 2 × 104 CFU, indicating good sanitary condition. Harvesting efficiency improved with greater biomass and filtration sack mesh number until reaching 3.5 g·L−1 and 200, respectively. We hope this study can help the method development of fresh Spirulina cultivation in miniaturized systems.
Databáze: Directory of Open Access Journals
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