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346 PROCEEDINGS OF INTERNATIONAL SCIENTIFIC CONFERENCE ON APPLIED BIOTECHNOLOGYany glycosidase activity. Based on the glycosidase activity index, the three different species that showed the highest %u03b2-glucosidase and %u03b2-galactosidase activities: Lactobacillus brevis CM04, Lactobacillus paracasei TC01, and Lactobacillus fermentum CP05 was chosen for further studies.Table 1. Glycosidase activity of different lactic acid bacteriaStrains%u03b2-Glucosidase activity (pNP production %u03bcM/min)%u03b2-Galactosidase activity (oNP production %u03bcM/min)LGG 1.98%u00b10.071 8.01%u00b10.346Levilactobacilus brevis CM01 3.87%u00b10.018 5.18%u00b10.025Lactobacillus fermentum CM03 0 0Levilactobacilus brevis CM04 2.431%u00b10.014 22.12%u00b10.513Lacticaseibacillus paracasei CM09 0.431%u00b10.002 5.78 %u00b10.15Lacticaseibacillus paracasei TC01 3.86 %u00b10.017 20.872%u00b10.431Lactobacillus fermentum CP05 4.08 %u00b10.03 28.98 %u00b10.890Lactobacillus fermentum CP09 0 12.32 %u00b10.412Lactobacillus fermentum CP12 0 6.34 %u00b10.1273.2. Total phenolic contentAmong antioxidant compounds, there is an important compound is the phenolic compound which contains a phenolic ring and organic carboxylic acid groups [11]. The stabilized and delocalized unpaired electrons of the phenolic ring contributed to antioxidant properties.The FolinCiocalteu reagent method was used to determine the total phenolic content in non-fermented rice bran and fermented rice bran, with the results expressed as gallic acid equivalents (GAEs) (Figure 1). After fermentation, the total phenolic compounds in rice bran fermented with Lactobacillus brevis CM04, Lactobacillus paracasei TC01, and Lactobacillus fermentum CP05 were approximately 1.22-fold, 1.69-fold, and