Table 4 Total Polyphenol, flavonoid, DPPH and ABTS radical scavening of rice beer and nurungji beer during fermentation and storage

	Days	Control	R20	R40	R60	N20	N40	N60
Total polyphenol (GAE μg/mL)	0	376.64±7.971)^Aa2)	305.66±8.09^Ac	265.92±4.46^Ad	203.52±2.67^Ae	345.42±5.34^NSb	292.59±14.78^Ac	254.30±5.53^Ad
	5	333.82±13.46^Ba	262.96±10.46^Bb	216.13±5.51^Bc	173.16±12.80^Bd	318.85±27.00^a	253.85±14.48^Bb	214.35±3.57^Bc
	10	328.49±17.59^Ba	255.76±8.09^Bb	209.80±3.76^BCc	163.64±4.04^BCd	315.08±24.01^a	251.05±16.55^Bb	208.11±5.51^Cc
	15	325.67±20.60^Ba	253.58±8.42^Bb	204.67±6.67^CDc	161.49±3.47^BCd	308.91±23.96^a	244.61±15.71^Bb	207.47±4.76^Cc
	20	323.04±22.44^Ba	254.84±10.45^Bb	198.72±2.98^Dc	160.02±4.85^Cd	308.59±21.98^a	239.28±17.31^Bb	200.88±6.62^Cc

Total flavonoid (CE μg/mL)	0	178.67±7.13^NSa	136.64±7.03^Ac	116.73±9.39^NSd	102.20±2.94^NSe	151.93±12.08^NSb	129.81±2.02^NScd	118.37±6.59^NSd
	5	172.54±17.05^a	134.19±8.10^ABbc	111.47±10.50^de	97.41±4.67^e	144.70±12.74^b	120.41±10.18^cd	107.39±9.84^de
	10	172.86±13.91^a	133.55±4.44^ABbc	109.42±10.05^de	98.34±4.02^e	143.75±11.89^b	120.17±11.74^cd	105.00±8.40^de
	15	171.67±12.84^a	127.94±6.84^ABbc	109.32±8.07^cde	96.18±1.61^e	142.95±13.36^b	117.74±12.42^ab	105.80±11.11^de
	20	165.77±19.35^a	122.58±4.53^Cbc	109.32±7.80^cd	97.95±2.08^d	139.56±14.32^b	116.05±13.42^cd	102.32±9.52^cd

DPPH (%)	0	37.82±3.76^NSa	25.70±3.81^NSbc	22.12±1.76^Ac	17.55±1.72^NSd	29.03±1.77^Ab	25.61±1.32^Abc	21.61±0.81^Acd
	5	33.01±2.57^a	23.38±2.45^b	19.43±1.27^Bcd	14.25±2.01^e	25.05±1.72^Bb	21.91±0.48^Bbc	18.53±0.73^Bd
	10	32.66±3.10^a	23.37±2.45^b	19.29±1.05^Bc	14.16±2.00^d	25.04±1.64^Bb	21.71±0.57^Bbc	18.43±0.70^Bc
	15	33.12±2.14^a	23.37±2.70^bc	19.41±0.95^Bde	14.18±2.05^f	24.98±1.63^Bb	21.66±0.42^Bcd	18.46±0.74^Be
	20	32.81±2.45^a	23.08±2.63^bc	19.09±1.04^Bde	14.09±2.06^f	25.62±2.27^Bb	21.57±0.46^Bcd	18.16±0.90^Be

ABTS (%)	0	26.24±1.88^Aa	21.90±1.36^Abc	18.44±1.99^Ac	13.38±2.36^NSd	23.80±1.82^Aab	21.55±1.75^Abc	18.43±1.95^Ac
	5	20.51±1.58^Ba	16.56±1.93^Bb	12.61±2.38^Bc	9.41±2.17^d	18.15±1.35^Bab	16.41±0.53^Bb	13.06±1.23^Bc
	10	19.86±1.37^Ba	16.24±1.86^Bb	12.01±2.31^Bcd	9.14±2.38^d	18.07±1.19^Bab	15.94±0.69^Bb	12.57±0.94^Bc
	15	19.80±1.43^Ba	15.86±2.09^Bb	11.52±1.90^Bc	9.00±2.37^c	17.98±1.28^Bab	15.55±0.83^Bb	11.92±1.71^Bc
	20	19.72±1.47^Ba	15.73±1.30^Bbc	11.53±1.05^Bd	8.87±2.41^e	17.57±1.35^Bab	14.88±0.54^Bc	11.97±1.25^Bd

¹⁾Values are mean±standard deviation (n=3).
²⁾Values with different superscripts a column (A-D) and a row (a-f) are significant at p<0.05 by Duncan’s multiple range test.
^NSNot significantly different.