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This study was determination of protein, γ-aminobutyric acid (GABA), total phenolic compounds and antioxidant activity in germinated brown rice and germinated Hang rice (Hom Mali 105). The rice grain was divided to two groups; pre-harvest (100 days) and harvest stage (120 days). The results showed that uncooked of harvest stage germinated brown rice (UHBR) extract showed the highest protein content which was 389.00 mg/100 g dry weight. The molecular weight of all protein samples appeared on the range of 14.40 to greater than 97.00 kDa. The comparison between germinated brown rice and germinated Hang rice indicated that either pre-harvest or harvest stage germinated brown rice had GABA, total phenolic contents and antioxidant activities more than germinated Hang rice. Uncooked of pre-harvest stage germinated brown rice (UPBR) exhibited the highest of GABA, total phenolic contents and antioxidant activities which was 311.30, 131.10 mg/100 g dry weight and 82.10%, respectively. Therefore, based on the data, the pre-harvest rice has the highest GABA, total phenolic content and antioxidant activity which are suitable for the production of germinated brown rice and germinated Hang rice.
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