Fig. 1From: Multi-wavelength fusion spectral extraction-assisted HPLC for simultaneous quantification of multiple secondary metabolites in herbal matricesUV absorption spectrum overlay stack of individual reference standards extracted from HPLC–DAD system. Catechin: 280 nm, epi catechin: 280 nm, epigallocatechin: 274 nm, ellagic acid: 254 nmBack to article page