Comparative Studies on Bioactive Constituents in Hawk Tea Infusions with Different Maturity Degree and Their Antioxidant Activities

Table 2

DPPH radical scavenging activities of vitamin C, HMI, HPI, and HBI. Each value is the mean ± SD.

DPPH radical scavenging activity (%)
Con^a (mg/mL)	0.1	0.2	0.3	0.4	0.5
HBI	79.51±0.61c	80.55±1.50c	83.01±1.03c	86.00±0.71c	86.15±0.92c
HPI	85.91±0.88b	87.76±0.43b	90.01±0.26b	90.89±0.17b	91.99±0.14b
HMI	54.93±0.61d	61.80±0.43d	66.32±0.16d	69.45±0.30d	75.71±0.98d
Vitamin C	96.38±0.47a	96.47±0.34a	96.50±0.46a	96.83±0.85a	97.00±0.41a

Con^a: concentration; different letters (a, b, c, and d) show statistical significance (𝑃<0.05).