Simultaneous Recognition of Species, Quality Grades, and Multivariate Calibration of Antioxidant Activities for 12 Famous Green Teas Using Mid- and Near-Infrared Spectroscopy Coupled with Chemometrics

Table 3

The calculation of antioxidant activities from 12 famous green teas by DPPH and ABTS.

Group code	DPPH scavenging activity		ABTS radical scavenging activity
	Average (%)	RSD	Average (TEAC)	RSD
G01	36.19 ± 0.28	0.77	4.45 ± 0.01	0.25
G02	36.10 ± 0.26	0.73	4.12 ± 0.02	0.36
G03	48.06 ± 0.23	0.47	4.04 ± 0.01	0.18
G04	40.26 ± 0.15	0.37	4.22 ± 0.01	0.22
G05	48.99 ± 0.25	0.51	4.34 ± 0.02	0.35
G06	35.52 ± 0.32	0.90	4.28 ± 0.01	0.35
G07	20.59 ± 0.47	2.30	1.81 ± 0.01	0.76
G08	29.60 ± 0.28	0.93	3.55 ± 0.02	0.56
G09	37.78 ± 0.19	0.51	3.81 ± 0.02	0.42
G10	36.68 ± 0.25	0.68	4.55 ± 0.02	0.35
G11	51.27 ± 0.30	0.58	5.72 ± 0.01	0.16
G12	26.24 ± 0.24	0.93	3.55 ± 0.04	1.18