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. 2016 Jul 4;6:28591. doi: 10.1038/srep28591

Table 2. Gray correlation coefficients between the active ingredients, antioxidant activity and related environmental factors.

Environmental factors Correlation degree
Tannin Total flavonoids Rutin Total phenolics IC50
XN 0.313 0.456 0.501 0.444 0.478
XAAP 0.351 0.511 0.421 0.602 0.507
XALTI 0.717 0.758 0.661 0.724 0.776
XpH 0.471 0.376 0.357 0.376 0.444
XAAT 0.402 0.413 0.364 0.461 0.305
XAMT 0.357 0.301 0.462 0.598 0.287
XP 0.316 0.406 0.456 0.336 0.321
X7 0.579 0.432 0.477 0.458 0.429
X1 0.481 0.338 0.328 0.294 0.328
XASD 0.357 0.674 0.733 0.328 0.613
XTP 0.322 0.329 0.353 0.422 0.515

XN, XP, ···, XALTI was performed in the Table 1. IC50 was used to indicate antioxidant activity.