Variation of Spirulina maxima biomass production in different depths of urea-used culture medium

Brazilian Journal of Microbiology

Md-abu Affan¹  Dae-won Lee¹  Salim Marzoog Al-harbi¹  Han-jun Kim¹  Najah Ibrahim Abdulwassi¹  Soo-jin Heo¹  Chulhong Oh¹  Heung-sik Park¹  Chae Woo Ma¹  Hyeon-yong Lee¹  Do-hyung Kang¹ 

关键词: Spirulina maxima;    fertilizer-grade urea;    medium depth;    surface cover;    outdoor mass culture;   

DOI  :  10.1590/S1517-838246420140188

来源: SciELO

【 摘 要 】

Fewer studies have assessed the outdoor cultivation of Spirulina maxima compared with S. platensis, although the protein content of S. maxima is higher than S. platensis. Spirulina growth medium requires an increased amount of NaHCO3, Na2CO3, and NaNO3, which increases the production cost. Therefore, the current study used a low-cost but high-efficiency biomass production medium (Medium M-19) after testing 33 different media. The medium depth of 25 cm (group A) was sub-divided into A1 (50% cover with a black curtain (PolyMax, 12 oz ultra-blackout), A2 (25% cover), and A3 (no cover). Similarly the medium depths of 30 and 35 cm were categorized as groups B (B1, B2, and B3) and C (C1, C2, and C3), respectively, and the effects of depth and surface light availability on growth and biomass production were assessed. The highest biomass production was 2.05 g L-1 in group A2, which was significantly higher (p < 0.05) than that in all other groups and sub-groups. Spirulina maxima died in B1 and C1 on the fifth day of culture. The biochemical composition of the biomass obtained from A2 cultures, including protein, carbohydrate, lipid, moisture, and ash, was 56.59%, 14.42%, 0.94%, 5.03%, and 23.02%, respectively. Therefore, S. maxima could be grown outdoors with the highest efficiency in urea-enriched medium at a 25-cm medium depth with 25% surface cover or uncovered.

【 授权许可】

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