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| Effects of Ratio among C, N, and P on Growth and Biochemical Compositions in Two Strains of Alga Dunaliella salina |
| WANG Pei-lei |
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Abstract The effects of ratio among C, N, and P on the growth and biochemical compositions in two strains of alga Dunaliella salina called OUN04, and OUN05 were investigated in an orthogonal design test. The maximum cell density of 114.2×10~4 cell/ml, β-carotene content of 100.4 mg/g and chlorophyll-a content of 144.6 mg/g were detected in the alga OUN04 exposed to the media with the ratios of C∶N∶P=12/1/0.05, 12/2/0.1, and 12/1/0.05, respectively, significantly different from those in the control groups. The maximum content of total fatty acids was found to be 86.20% in the OUN04, significantly higher than that in the control group(81.02%). The alga OUN04 had the maximum protein content of 32.44% when the alga was exposed to the medium with the ratios of C∶N∶P=6/1/0.05, insignificantly different from that in the control group. For the alga OUN05, the maximum cell density of 101.2×10~4 cell/ml, β-carotene content of 109.2 mg/g and chlorophyll-a content of 108.7 mg/g were detected in the treated groups with C∶N∶P=6/2/0.05, 6/0.5/0.1, and 12/2/0.1, respectively, significantly different from those in the control groups. The maximum protein content of 34.41% was observed in the C∶N∶P=6/1/0.05 group of, insignificantly different from that in the control group(33.17%).
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Received: 25 March 2010
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