Table 3. Concentration of procyanidin B₁ and catechin in grape samples during growth phase (μmol/g)

	SJ1)_RT2)_5w3)		NS4)_RT_6w		NS_RT_8w		NS_RT_10w
	Berry	Skin	Berry	Skin	Berry	Skin	Berry	Skin
Procyanidin B1	0.14±0.055)6)	9.99±0.74*	0.11±0.04	0.79±0.19*	0.12±0.03	3.32±0.25*	0.05±0.00	5.85±0.33*
Catechin	0.45±0.08	41.89±3.07*	0.22±0.05	1.49±0.21*	0.08±0.02	8.87±0.43*	0.10±0.03	13.68±1.44*
C/B17)	3.42±1.01	4.20±0.25	2.13±0.29	1.92±0.25	0.68±0.20	2.69±0.33*	2.00±0.53	2.35±0.37

Sangju Korea.
Rosetta cultivar.
5 weeks after flowering.
Nonsan Korea.
All values are means±SD (n=3).
Significant differences between berry and skin were determined using the Wilcoxon signed-rank test (^*p<0.05).
Ratio of catechin and B₁ concentration.