Table 1 The yield, total polyphenol, total flavonoid, total tannin, and total sugar contents of Castanea crenata inner shell extracts by enzyme treatment and pressurized extraction

Sample1)	Yield (DB2), %)	Total polyphenol (GA3), g/100 g)	Total flavonoid (Rutin, g/100)	Total tannin (TA4), g/100)	Total sugar (Glucose, g/100)
HE	14.30±0.09^e5)	15.48±0.08^e	10.82±0.43^a	14.90±0.23^g	38.53±0.19^g
AE	19.50±0.11^d	18.52±0.31^c	11.94±0.19^b	17.03±0.38^f	40.42±1.37^h
C30m	29.80±0.14^a	22.69±0.26^a	12.13±0.31^a	21.66±0.45^a	37.60±0.16^h
C60m	19.90±0.11^d	18.54±0.34^c	11.62±0.20^a	17.66±0.17^d	47.31±0.49^e
C120m	12.42±0.03^f	17.54±0.11^d	10.49±0.32^b	17.05±0.24^e	54.89±1.99^c
V30m	27.08±0.29^b	21.64±0.33^b	12.01±0.33^a	20.82±054^b	43.07±0.32^f
V60m	19.60±0.34^d	21.20±0.29^b	11.70±0.29^a	20.08±0.21^c	51.76±0.73^d
V120m	14.30±0.27^e	16.64±0.16^d	11.00±0.37^b	15.79±0.33^f	56.22±0.79^c
H30m	28.92±0.31^ab	21.32±0.41^b	11.82±0.18^a	20.16±0.38^c	50.97±0.75^d
H60m	25.41±0.33^c	15.83±0.18^e	9.82±0.17^c	15.16±0.14^g	58.96±0.68^b
H120m	15.44±0.46^e	15.53±0.27^e	9.63±0.16^c	14.54±029^h	61.07±1.08^a

HE, hot-water extracts from Castanea crenata inner shell; AE, autoclave extracts from Castanea crenata inner shell; C30m, C60m, and C120m, autoclave extracts(30, 60, and 120 min) of celluclast enzyme treatment from Castanea crenata inner shell; V30m, V60m, and V120m, autoclave extracts(30, 60, and 120 min) of viscozyme enzyme treatment from Castanea crenata inner shell; H30m, H60m, and H120m, autoclave extracts(30, 60, and 120 min) of hemicellulase enzyme treatment from Castanea crenata inner shell.
DB, dry basis.
GA, gallic acid.
TA, tannic acid
Means±SD (n=3) with different letters (a-h) within column are significantly different by Duncan’s multiple range test (p<0.05).