Polyphenol Content and Antioxidant Activity of Stevia and Peppermint as a Result of Organic and Conventional Fertilization

Table 1

Total phenolics, flavonoids, and condensed tannins in stevia^a.

Fertilization	Plant	Total phenolics^b	Flavonoids^c	Condensed tannins^d
Organic	Stevia	0.948 ± 0.157^a	0.165 ± 0.030^a	0.006 ± 0.001^a
Conventional	Stevia	0.708 ± 0.089^a	0.186 ± 0.088^a	0.006 ± 0.002^a

^aEach value is the mean of three replicates ± standard error. Different letters in each column express significant difference by Student’s t-test. ^bmg of gallic acid equivalent/g of dry sample. ^cmg equivalent of rutin/g of dry sample. ^dmg of (+) catequine equivalent/g dry sample.