Fig. 4
Effects of EG3 on the growth of E. gracilis co-cultured with initial EG3 cell density of 8 × 106 CFU/mL in heat-sterilized and non-sterilized wastewater effluents for 7 days. a Changes in chlorophyll a + b content in E. gracilis cultured without (black square) and with EG3 (white square) in heat-sterilized effluent; changes in chlorophyll a + b content in E. gracilis cultured without (black circle) and with EG3 (white circle) in non-sterilized effluent. b Biomass production rate of E. gracilis cultured without or with EG3 in sterilized or non-sterilized effluent during 7 days. Values are means ± SDs (n = 3). *Significant difference (p < 0.05) from control