. 2022 Feb 24;9:833730. doi: 10.3389/fnut.2022.833730

Table 7.

Phenolic contents in different varieties of rice bran (mg/100g sample).

Group	A					B				C
Varieties	KAK 1 CMU	BKU 5 CMU	Sang 5 CMU	PES 1 CMU	K 4 CMU	KDML 105	BB 3 CMU	BB 4 CMU	RD 6	KC CMU 107	KDK
Gallic acid	ND	ND	ND	ND	ND	0.09 ± 0.01^c	0.14 ± 0.00^b	0.15 ± 0.00^a	0.13 ± 0.00^b	ND	ND
Caffeic acid	0.15 ± 0.00^e	0.40 ± 0.02^a	0.16 ± 0.01^e	0.26 ± 0.00^c	ND	0.17 ± 0.01^e	0.30 ± 0.01^b	0.31 ± 0.00^b	0.19 ± 0.00^d	0.12 ± 0.00^f	0.09 ± 0.00^g
Catechin	ND	ND	ND	ND	ND	ND	ND	ND	ND	0.04 ± 0.00^a	ND
Epicatechin	0.13 ± 0.00^c	0.09 ± 0.00^d	0.22 ± 0.05^b	0.33 ± 0.01^a	ND	ND	ND	0.09 ± 0.00^d	ND	ND	0.08 ± 0.00^d
Epigallocatechin gallate	0.50 ± 0.00^e	0.47 ± 0.01^ef	0.42 ± 0.03^ef	0.39 ± 0.00^fg	0.68 ± 0.02^d	0.42 ± 0.09^ef	1.34 ± 0.06^a	0.96 ± 0.04^c	1.21 ± 0.02^b	0.32 ± 0.00^gh	0.28 ± 0.01^h
p-coumaric acid	0.33 ± 0.01^e	0.46 ± 0.01^c	0.23 ± 0.04^f	0.26 ± 0.00^f	0.44 ± 0.01^c	0.36 ± 0.01^de	1.15 ± 0.07^a	0.87 ± 0.01^b	0.41 ± 0.02^cd	0.22 ± 0.01^f	0.15 ± 0.00^g
o-coumaric acid	0.33 ± 0.02^cd	0.05 ± 0.03^ab	0.55 ± 0.03^a	0.39 ± 0.01^bc	0.25 ± 0.02^de	0.57 ± 0.04^a	0.61 ± 0.17^a	0.57 ± 0.01^a	0.51 ± 0.00^ab	0.15 ± 0.00^e	0.18 ± 0.04^e
Naringin	0.22 ± 0.00^de	0.80 ± 0.02^a	0.58 ± 0.08^b	0.17 ± 0.05^de	0.22 ± 0.04^de	0.16 ± 0.00^de	0.87 ± 0.05^a	0.44 ± 0.04^c	0.25 ± 0.00^d	0.19 ± 0.01^de	0.13 ± 0.03^e
Rosmarinic acid	0.06 ± 0.01^cd	ND	ND	0.10 ± 0.02^b	0.14 ± 0.00^a	0.07 ± 0.00^c	ND	0.13 ± 0.00^a	ND	0.06 ± 0.00^cd	0.05 ± 0.00^d
Quercetin	1.21 ± 0.01^c	1.15 ± 0.01^d	1.27 ± 0.01^b	1.44 ± 0.00^a	1.26 ± 0.02^b	0.27 ± 0.04^f	0.26 ± 0.00^f	0.24 ± 0.01^f	0.17 ± 0.00^g	1.22 ± 0.01^c	0.81 ± 0.00^e
Naringenin	ND	ND	ND	ND	ND	ND	ND	ND	ND	ND	ND
Rutin	0.07 ± 0.00^d	0.09 ± 0.00^c	ND	ND	0.23 ± 0.00^a	ND	ND	ND	ND	0.12 ± 0.00^b	0.09 ± 0.00^c
Phytic acid	5.36 ± 0.05^b	ND	ND	1.19 ± 0.00^f	1.57 ± 0.01^e	1.14 ± 0.04^f	3.29 ± 0.05^c	8.65 ± 0.12^a	0.26 ± 0.14^d	0.72 ± 0.05^g	0.59 ± 0.03^g
Ferulic acid	0.23 ± 0.01^d	0.28 ± 0.00^b	0.22 ± 0.00^de	0.24 ± 0.01^c	0.20 ± 0.01^f	0.17 ± 0.01^g	0.18 ± 0.00^g	0.17 ± 0.01^g	0.21 ± 0.01^ef	0.33 ± 0.00^a	0.13 ± 0.00^h
Chlorogenic acid	0.78 ± 0.02^c	0.84 ± 0.04^bc	0.79 ± 0.01^c	0.93 ± 0.02^a	0.86 ± 0.01^b	0.61 ± 0.01^d	0.87 ± 0.05^ab	0.65 ± 0.04^d	0.84 ± 0.00^bc	0.64 ± 0.03^d	0.51 ± 0.02^e
Kaempferol	0.07 ± 0.00^d	0.07 ± 0.01^d	0.07 ± 0.01^d	0.11 ± 0.04^c	ND	ND	0.26 ± 0.01^a	0.16 ± 0.00^b	ND	ND	ND
Hydroxybenzoic acid	0.27 ± 0.00^d	ND	0.48 ± 0.03^b	0.37 ± 0.02^c	0.30 ± 0.03^d	0.29 ± 0.07^d	ND	ND	ND	0.59 ± 0.02^a	0.30 ± 0.01^d

All values are mean ± SD; ND, non detectable; Detection limit of each compound: Gallic acid = 0.12 μg/ml, Caffeic acid = 0.06 μg/ml, Catechin = 0.30 μg/ml Epicatechin = 3.01 μg/ml, Rosmarinic acid = 0.88 μg/ml, Naringenin = 0.56 μg/ml, Rutin = 1.07 μg/ml, Phytic acid = 14.68 μg/ml, Kaempferol = 0.92 μg/ml, Hydroxybenzoic acid = 0.95 μg/ml.

Values followed by different superscript letters in the same row are significantly different (P < 0.05).