2 research outputs found
<span style="font-size:11.0pt;font-family: "Times New Roman";mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: Mangal;mso-ansi-language:EN-GB;mso-fareast-language:EN-US;mso-bidi-language: HI" lang="EN-GB">Flavonoid profile and antioxidant activities of methanolic extract of <i>Hyparrhenia hirta</i> <span style="mso-bidi-font-style:italic">(L.) Stapf.</span></span>
208-215In this
study, we report isolation of flavonoids, viz.,
3-O-methylquercetin, tangeritin, luteolin-7-O-glucoside, luteolin,
apigenin-7-O-glucoside, apigenin-8-C-glucoside, luteolin-8-C-glucoside,
luteolin-6-C-glucoside, diosmetin and catechin from the methanolic extract of Hyparrhenia
hirta employing high performance liquid chromatography and liquid
chromatography-electrospray ionization-tandem mass spectrometry. The total
phenolic content of H. hirta extract was 105.58 ± 0.1 mg gallic acid
equivalents/g of plant extract while the total flavonoid content was 45.20 ±
0.2 mg quercetin equivalents/g of plant extract and the total condensed
tannin were 72.35 ± 0.7 mg catechin equivalents/g of plant extract by
reference to standard curve. The antioxidant activity was assayed through the
antioxidant capacity by phosphomolybdenum assay, the reducing power assay and
the radical scavenging activity using 2,2-diphenyl-1-picrylhydrazyl method. The
extract showed dose dependant activity in all the three assays.
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