Growth performance of Spirulina platensis in three different concentrations of banana leaf ash with added jackjfruit seed powder and urea

The growth performance of Spirulina platensis was studied in three different concentrations of banana leaf ash (BLA) added with 0.4 g/I jackfruit seed powder (JSP) and 0.2 g/I urea in the laboratory. S. platensis was cultured in three different concentrations viz. 4.8, 7.2 and 9.6 g/1 of BLA and Kosaric medium (KM) as control with three replications for a period of three months. Each trial was done for a period of 12 days in the laboratory. The initial cell weight of S. platensis was 4 mg/1 which attained a maximum cell weight of 545 mg/1 in Kosaric medium followed by 523, 485, and 307 mg/1 in 7.2, 4.8, and 9.6 .mg/1 of BLA media with added 0.4 g/I JSP and 0.2 g/I urea respectively, on the 8th day of culture. Similar trend was observed in case of chlorophyll a content where the highest amount was 8.12 mg/I in KM and among different concentrations of BLA highest amount was 7.53 mg/I in 7.2 g/I BLA with added 0.4 g/I JSP and 0.2 g/I urea. The percentage of crude protein, crude lipid, moisture, ash and NFE contents of JSP were recorded 12, 1.85, 10, 3.62, and 72.53%, respectively. The percentage of total nitrogen, phosphorus, sulpher, sodium and calcium of BLA were recorded 0.18, 0.09, 2.35, 0.10, 0.07 and 10.81%, respectively. The result showed that the growth rate of S. platensis was significantly (p<0.05) higher in 7.2 g/1 BLA medium with 0.4 g/I JSP and 0.2 g/I urea than other concentrations of BLA. It is suggested that BLA algal culture medium is as effective as commercially produced culture medium making it feasible to culture Spirulina.

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Journal of the Bangladesh Agricultural University, 03, 2
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 Record created 2018-09-21, last modified 2020-10-28

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