The contents of GABA in SAEW1 are lower than that of SAEW2, 3 and TW, which implied that SAEW with low ACC (about 5 mg/L). And SAEW2 and SAEW3 reached up to 31.3 and 30.9 mg/100 g at the late period (72 h), which are higher than that of TW treatment of 25.4 mg/100 g. SAEW treatment with appropriate ACC of 15 or 30 mg/L could promote the accumulation of GABA by up to 21%