extremely significantp < 0.01
When comparing the total phenolic content, GL had the highest values of 0.024 ± 0.001%, which was similar to BL 0.022 ± 0.001% ( Figure 2 A); In terms of flavonoid content, GL, RG and BL were 0.390 ± 0.005%, 0.604± 0.006% and 0.096 ± 0.004%, respectively ( Figure 2 B), and the three comparison groups had extremely significant differences ( p < 0.01).