Table 3. Monomer and dimer tannin concentration of grape seed at different solvents condition by HPLC-DAD

Solvents		Seed (mg/kg)
Solvents		catechin	epicatechin	gallocatechin	epigallocatechin	procyanidin B1	procyanidin B2	total
Methanol	100%	535.6±66.64^ab,1)2)	143.5±9.59^bc	115.6±28.80^ab	421.3±59.05^cd	1,336.8±87.87^b	202.8±145.90^a	2,755.6±81.91^b
	70%	774.9±144.30^a	209.4±22.51^c	141.8±20.90^a	598.3±46.69^b	1,741.3±132.93^a	117.9±8.73^b	3,583.5±372.73^a
	70%+0.5% HCl	40.3±8.89^d	44.0±6.10^d	12.2±4.33^c	3.0±5.94^g	72.8±24.16^f	12.6±9.79^c	184.8±22.27^d
Ethanol	100%	453.2±22.99^c	129.1±12.36^c	16.2±32.32^c	277.6±19.13^de	1,052.0±50.43^c	56.1±3.07^bc	1,984.3±134.97^b
	70%	506.1±27.90^bc	155.7±7.41^bc	122.1±8.63^ab	461.6±21.64^bc	1,312.5±52.06^b	89.2±3.07^bc	2,647.2±134.97^b
	70%+0.5% HCl	29.9±2.66^d	28.5±19.08^d	47.4±6.32^c	168.3±40.35^ef	178.6±13.33^f	5.7±11.33^c	458.4±72.24^cd
Acetone	100%	469.5±24.44^c	174.7±20.82^ab	99.9±16.98^b	0.0±0.00^g	435.8±145.34^e	58.7±32.63^bc	1,238.6±196.77^c
	70%	692.7±207.65^ab	200.5±24.18^a	143.0±19.39^a	1,940.0±150.52^a	812.6±147.12^d	119.9±10.22^b	3,908.7±547.98^a
	70%+0.5% HCl	23.0±2.97^d	30.4±2.79^d	40.2±5.33^c	86.5±15.06^fg	130.1±2.74^f	8.2±0.14^c	318.4±25.59^d

¹⁾Mean±Standard deviation. (n=4)
²⁾Different letters are significantly different at p<0.05 by Duncan’s multiple range test (DMRT).
³⁾N.D = Not detected.