The Effect of Light Intensity on the Growth and Carotenoid Production of Chlorococcum sp. TISTR 8266

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Sayan Nanchana
Suphansa Khantasopa
Narisara Wongsing

Abstract

In this research, the effect of light intensity on the growth and carotenoid production of the green algae Chlorococcum sp. TISTR 8266 was investigated. This microalgae accumulates pigment in the carotenoid group under stress conditions. The pigments in the carotenoid group are qualified as highly effective antioxidants. It can be used as a dietary supplement in both humans and animals and used as cosmetic products. The experimental results showed that the best cultivation condition is Treatment 3 with light intensity of 8,500-9,000 lux, N8 medium and temperature of 28±2°C. The biomass yield of Treatment 3 at day 14, 21 and 28 are 4.30±0.18, 6.13±0.19 and 6.24±0.15 grams per liter, respectively, and the carotenoid content are 2.76±0.26, 3.92±0.18 and 3.89±0.36 milligrams per gram dried weight (g-dw), respectively. These results were significantly different (p < 0.05) when compared to Treatment 1 with the light intensity of 4,000-4,500 lux and Treatment 2 with the light intensity of 7,500-8,000 lux in the same cultivation period. These findings indicated that high light intensity is one of the important factors that has a positive effect on growth and stimulation on algae to produce pigments in the carotenoid group.

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Section
บทความวิจัย (Research Articles)

References

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