Table 2.

Higher heating values (HHV) and light conversion efficiencies (LCE) for S. obliquus parental strain (PS) and mutant (SDEC-1M) under air and 15% (v/v) CO₂ for 7 days. Each data indicates the mean ± SD, which was measured from three independent cultures. Data in the same parameter followed by different letters are significantly different by Duncan's test (p < 0.05).

Strains	HHV(kJ g−1)		LEC(%)
	Air	15% (v/v) CO2	Air	15% (v/v) CO2
PS	22.03 ± 0.47a	23.1 ± 0.26bc	7.2 ± 0.29a	11.54 ± 0.74b
SDEC-1M	22.53 ± 0.35ab	24.43 ± 0.59c	6.43 ± 0.62a	17.93 ± 0.6c