HPLC Quantification of Phenolic Acids from Vetiveria zizanioides (L.) Nash and Its Antioxidant and Antimicrobial Activity

Table 1

Total phenolics and antioxidant values of different fractions of V. zizanioides leaves.

Phenolic fraction	Total phenolics*; (GA equivalent μM/g fwt)	Antioxidant property; TEAC value (%)
HW	2.03 ± 0.9^b	54.73
HM	0.97 ± 0.4^a	21.45
NW	2.62 ± 1.7^c	65.2
NM	1.09 ± 0.5^a	26.63
M	1.19 ± 0.5^a	30.04

∗Values are mean ± standard error. Means followed by the same letter in a column are not significantly different at P = 0.05 according to analysis of variance and Tukey’s HSD test.
HW: water soluble acidic fraction, HM: methanol soluble acidic fraction, NW: water soluble alkaline fraction, NM: methanol soluble alkaline fraction, and M: 80% methanolic extract.