Chemical Profiling and Discrimination of Essential Oils from Six <i>Ferula</i> Species Using GC Analyses Coupled with Chemometrics and Evaluation of Their Antioxidant and Enzyme Inhibitory Potential.

The Pearson correlation coefficient (r) between the essential oil contents of different studied samples indicated that Fc had a highly significant positive correlation with Ft (r = 0.71), Fk (r = 0.58), Fv (r = 0.47) and Fp (r = 0.35), while a non-significant negative correlation was observed between Fc and Fs (the highest correlations were observed between Ft and Fk (r = 0.89, p < 0.001), between Fc and Ft (r = 0.71, p < 0.001), and between Fc and Fk (r = 0.58, p < 0.001) as seen in Table 2 .

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