Table 4.

The simple Pearson’s regression between antioxidant activity and total polyphenols in fireweed leaves for two experimental years 2017 and 2018.

2017	R2	Correlation Coefficient (in %)	p-Value
Fermented 24 h	0.91	95.37	0.0032
Fermented 48 h	0.84	91.71	0.0100
Control (not fermented)	0.71	84.38	0.0340
2018
Fermented 24 h	0.72	84.97	0.0320
Fermented 48 h	0.59	77.28	N.S. 1
Control (not fermented)	0.90	95.09	0.0036

¹ N.S., not significant.