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Effects of air supply for various times (0, 30 min/d, 1 h/d, or 2 h/d) on (A) biomass production (g/L in medium) and (B) cordycepin level (cordycepin mg/dry mycelium g/medium L) of the mycelia of surface liquid-cultured Cordyceps militaris in 200 mL medium with or without porcine liver powder extracts (7.5 g/L) at 25°C for 14 days. Data are represented as the mean ± standard deviation (n = 3). Significant differences are shown by different letters (p < 0.05).
