Table 6.

Correlation index (R²) between phenolic compounds and antioxidant activities in different ‘Hangbaiju’.

Phenolic Compound	DPPH		ABTS		FRAP
	Duoju	Taiju	Duoju	Taiju	Duoju	Taiju
5-O-caffeoylquinic acid	0.8231	0.5808	0.7966	0.6304	0.2733	0.5166
3,5-di-O-caffeoylquinic acid	0.7134	0.5761	0.6871	0.6147	0.0831	0.4985
luteoloside	0.6063	0.5687	0.5455	0.6339	0.0369	0.1208
TMAC	0.8101	0.5279	0.6871	0.5704	0.3318	0.6051
TDAC	0.8433	0.5917	0.7982	0.6599	0.2568	0.4081
TPAC	0.8655	0.5886	0.8118	0.6480	0.2686	0.4987
TFC	0.7165	0.5810	0.6686	0.6522	0.0245	0.0835
TKPC	0.8761	0.5963	0.8224	0.6602	0.2139	0.4265

TMAC: Total mono-caffeoylquinic acid contents, TDAC: Total di-caffeoylquinic acid contents, TPAC: Total phenolic acid contents, TFC: Total flavonoids contents, TKPC: Three key phenolic components contents.