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HPLC of GTE (A) and BTE (B). Detection was performed at 278 nm. Peaks identification: 1: gallic acid (GA); 2: epigallocatechin (EGC); 3: caffeine; 4: catechin (C); 5: epicatechin (EC); 6: epigallocatechin gallate (EGCG); 7: gallocatechin gallate (GCG); 8: epicatechin gallate (ECG); 9: theaflavin (TF); 10: theaflavin-3-gallate (TF-3-G); 11: theaflavin-3′-gallate (TF-3′-G).
