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Table 1 Free, bound and total content of phenolics, flavonoids and anthocyanins of sixteen different genotypes of rice with black, red and brown bran color

From: Phytochemical constituents, antioxidant activity, and antiproliferative properties of black, red, and brown rice bran

Rice bran colour TPC (mg GAE/100 g DM) TFC (mg QE/100 g DM) TAC (mg Cy3-GE/100 g DM)
Free Bound Total Free Bound Total Free Bound Total
Black (RB211) 635.81c ± 40.53 308.21b ± 12.50 944.02b ± 47.62 391.34c ± 15.76 161.86c ± 7.37 553.20c ± 20.73 168.20d ± 8.24 22.51c ± 2.00 91 190.71d ± 13.61
Black (RB218) 771.15a ± 42.07 443.55a ± 16.21 1214.70a ± 48.71 526.68a ± 21.65 297.20a ± 10.82 823.88a ± 38.59 256.11a ± 10.44 38.51a ± 3.66 294.62a ± 12.05
Black (RB222) 613.04c ± 36.25 265.44c ± 10.67 878.48c ± 41.47 348.57d ± 14.17 119.09d ± 4.29 467.66e ± 22.74 150.20e ± 6.79 20.37c ± 2.54 170.57e ± 8.64
Black (RB225) 703.16b ± 37.71 295.56b ± 11.47 998.72b ± 46.32 378.69c ± 12.62 149.21c ± 6.35 527.90d ± 24.61 188.37c ± 7.22 26.18b ± 3.06 214.55c ± 9.65
Black (RB233) 684.86b ± 30.15 297.26b ± 11.88 982.12b ± 44.62 480.39b ± 18.26 250.91b ± 10.82 731.30b ± 33.60 201.63b ± 10.19 29.91b ± 3.17 231.54b ± 11.39
Black (RB246) 585.25d ± 26.37 257.65c ± 15.21 842.90d ± 39.52 340.78d ± 15.05 111.30d ± 4.25 452.08e ± 19.73 69.20g ± 4.55 14.84d ± 1.61 84.04f ± 4.75
Black (RB248) 616.87c ± 31.25 289.27b ± 13.27 906.14c ± 43.77 372.40c ± 12.69 142.92c ± 7.28 515.32d ± 20.26 144.30f ± 6.30 18.70c ± 1.22 163.00e ± 7.26
Red (RP511) 579.46d ± 25.17 231.86c ± 11.54 811.32e ± 40.39 314.99d ± 14.42 85.51e ± 2.05 400.50g ± 16.30 63.21g ± 3.65 14.66d ± 1.59 77.87g ± 5.28
Red (RP520) 462.71e ± 22.61 135.11d ± 7.32 597.82g ± 22.40 218.24e ± 10.65 238.76b ± 10.22 457.00e ± 19.62 46.63h ± 391 5.25f ± 0.72 51.88h ± 3.92
Red (RP533) 475.70e ± 19.38 148.10d ± 6.48 623.80f ± 29.68 231.23e ± 9.72 101.75d ± 2.88 332.98h ± 15.27 48.91h ± 3.88 5.61f ± 0.62 54.52h ± 4.06
Red (RP538) 482.79e ± 20.16 155.19d ± 6.89 637.98f ± 30.04 238.32e ± 10.16 110.32d ± 3.74 348.64h ± 14.66 51.20h ± 2.76 10.62e ± 1.52 61.82h ± 3.33
Red (RP544) 569.39d ± 22.54 241.79c ± 10.42 811.18e ± 38.52 324.92d ± 15.32 95.44e ± 2.40 420.36f ± 16.62 60.16g ± 4.21 12.27d ± 1.38 72.43g ± 5.27
Brown (IR402) 153.30h ± 6.93 116.55f ± 5.81 269.85i ± 10.96 28.52h ± 3.46 11.63g ± 1.26 40.15 k ± 4.77 2.18k ± 0.35 ND 2.18k ± 0.41
Brown (IR409) 276.88g ± 11.42 149.28d ± 6.90 426.16h ± 15.30 82.41g ± 4.91 52.93f ± 2.60 135.34j ± 5.22 7.31j ± 0.82 ND 7.31j ± 0.64
Brown (IR420) 329.65f ± 15.30 102.05e ± 8.65 431.70h ± 15.04 135.18f ± 5.72 105.70d ± 2.91 240.88i ± 10.61 10.72i ± 1.38 ND 10.72i ± 1.12
Brown (IR425) 327.64f ± 14.18 120.04e ± 7.19 447.68h ± 16.71 133.17f ± 5.40 100.69d ± 2.73 233.86i ± 11.16 10.25i ± 1.19 ND 10.25i ± 0.98
  1. Data are means of triplicate measurements ± standard deviation. Means not sharing a common single letter in each column for each measurement were significantly different at p < 0.05
  2. ND not detected