Table 2.

Polyphenolic compounds identification and quantification by reverse-phase HPLC-PDA.

Standard Substances	Concentration in Extract (mg/g)
	MM- Fr I	MM- Fr II	MM- Fr III	MM (Conv)	MM (MW)	MM (Conv)r
gallic acid	2.130 ± 0.003	1.821 ± 0.000	1.561 ± 0.001	2.118 ± 0.002	2.090 ± 0.000	2.420 ± 0.011
protocatechuic acid	0.532 ± 0.000	0.483 ± 0.001	0.464 ± 0.002	0.613 ± 0.002	0.577 ± 0.002	0.640 ± 0.004
caftaric acid	0.552 ± 0.000	0.857 ± 0.006	1.085 ± 0.006	0.794 ± 0.000	0.779 ± 0.004	0.318 ± 0.000
catechin hydrate	11.344 ± 0.016	9.964 ± 0.002	9.909 ± 0.032	10.050 ± 0.004	9.742 ± 0.000	8.571 ± 0.263
vanillic acid	1.238 ± 0.003	1.015 ± 0.001	0.818 ± 0.001	1.050 ± 0.003	1.063 ± 0.002	1.547 ± 0.006
syringic acid	0.654 ± 0.002	0.496 ± 0.002	0.416 ± 0.003	0.641 ± 0.000	0.642 ± 0.001	0.722 ± 0.012
(−) epicatechin	7.536 ± 0.017	6.672 ± 0.000	6.525 ± 0.002	6.784 ± 0.002	6.755 ± 0.012	5.560 ± 0.009
p-coumaric acid	nd	nd	nd	0.046 ± 0.001	0.043 ± 0.000	0.057 ± 0.002
ellagic acid dihydrate	0.237 ± 0.001	0.253 ± 0.003	0.212 ± 0.000	0.225 ± 0.000	0.227 ± 0.001	0.143 ± 0.000
rutin hydrate	0.739 ± 0.000	0.702 ± 0.001	0.555 ± 0.001	0.681 ± 0.000	0.738 ± 0.001	0.814 ± 0.000
trans-resveratrol	nd	nd	nd	0.053 ± 0.000	0.080 ± 0.000	0.075 ± 0.000
quercetin	0.805 ± 0.001	0.936 ± 0.001	1.166 ± 0.003	0.789 ± 0.001	0.758 ± 0.001	0.619 ± 0.009

nd—not detected. All values are given in mg compound/g of extract.