Effect of the Soaking Treatment and Germination Condition on the Germination Rate and the Content of γ-aminobutyric Acid of Brown Rice

[Objective]The processing technique for the highest germination rate and content of γ-aminobutyric acid(GABA) of brown rice was explored.[Method]The effect of the soaking treatment and the germination condition on the water absorption,germination rate and level of GABA of brown rice was experimented with the design of single factor and orthogonal method.[Results]The brown rice soaked in the water with 40 ℃ was with fastest ability I n water-absorption and it would be saturated after 20-24 hours,which absorption rate of water was 29.0% to 32.0%.The optimal condition of brown rice seed germination was:the temperature of seed-soaking was 35 ℃;the time of seed-soaking,48 h;the temperature of seed germination,35 ℃;and the time of seed germination,24 hours.The best condition for the content of GABA in brown rice was the temperature of seed-soaking was 35 ℃;the time of seed-soaking,24 hours;the temperature of seed germination,30 ℃ and the time of seed germination,20 hours.[Conclusion]It had important significance in the determination of the optimum condition of brown rice seed germination and the exploration of the intrinsic link between the water absorption,germination rate and the content of GABA in the process of seed germination.