Fractionation information by normal-phase preparative HPLC and tentative compound identification by normal-phase HPLC-ESI/MS in negative mode.

aNP, fraction numbers.bCT, collecting time period.cYield, yield of one injection of preparative HPLC, that is, milligram per 200 milligrams bayberry leaf proanthocyanidin extract (BLPEs).dID, peak numbers.etR, retention time.fNA, number of A-type linkage.gMW, molecular weight.h(E)GC, (E)GCG, (E)CG are abbreviations for (epi)gallocatechin, (epi)gallocatechin-3-O-gallate, (epi)catechin-3-O-gallate.