310962.fig.001a
(a)
310962.fig.001b
(b)
Figure 1: (a) HPLC chromatogram of nine kinds of standard polyphenols (10 mg ml−1). Peak: 1, gallic acid; 2, protocatechuic acid (PCA); 3, catechin; 4, epigallocatechin gallate (EGCG); 5, caffeic acid; 6, epicatechin; 7, rutin; 8, quercetin; 9, narigenin. (b) HPLC chromatograms of free polyphenols from SLWLQY extract (10 mg ml−1). Phenolic compounds correspond to peaks 1, 2, 4, 5, 6, 7 and 8 as in (a). Detector was set at 280 nm. The arrow indicated the retention time (RT) of merged both SLWLQY and different standards.