Effects of the kind of gas, the duration and the temperature on the γ- amino butyric acid (GABA) content and thequality components of tea leaf under anaerobic treatment were investigated by the orthogonal design. The result showed that theamount of GABA in tea leaf under anaerobic conditions was mainly affecteds by the duration, followed by the kind of gas, butnot influenced by the temperature. Considering GABA content and quality components of tea leaf, the optimum conditions ofanaerobic treatment on fresh...