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  Indian J Med Microbiol
 

Figure 1: (a) Liquid chromatography–electrospray ion source–mass spectrophotometry/mass spectrophotometry spectra (M + H)+ ions and the total ion chromatogram in full scan mode present in ethyl acetate extract fraction of P. betle leave showing syringic acid and betanin. (b) Liquid chromatography–electrospray ion source–mass spectrophotometry/mass spectrophotometry spectra (M + H)+ ions and the TIC of ethyl acetate Piper betle fraction showing epicatechin-4-β-8 → catechin, quercetin, and anethole. (c) Liquid chromatography–electrospray ion source–mass spectrophotometry/mass spectrophotometry spectra (M + H)+ ions and the TIC of ethyl acetate Piper betle fraction showing kaempferol-3-O (4”-O-acetyl-rutinoside and diallyl glucose. (d) Liquid chromatography–electrospray ion source–mass spectrophotometry/mass spectrophotometry spectra (M + H)+ ions and the TIC of ethyl acetate Piper betle fraction showing piptocarphin B and luteolin-7-O-rutinoside. (e) Liquid chromatography–electrospray ion source–mass spectrophotometry/mass spectrophotometry spectra (M + H)+ ions and the TIC of ethyl acetate Piper betle fraction showing quercetin-3-O-glucoside, cnicin, myricetin, allylpyrocatechol-3, 4-diacetate, β-caryophyllene, and cinnamic acid. (f) Liquid chromatography–electrospray ion source–mass spectrophotometry/mass spectrophotometry spectra (M + H)+ ions and the TIC of ethyl acetate Piper betle fraction showing kaempferol 7-O-glucoside. (g) Liquid chromatography–electrospray ion source–mass spectrophotometry/mass spectrophotometry spectra (M + H)+ ions and the TIC of ethyl acetate Piper betle fraction showing rutin, chlorogenic acid, and p-hydroxybenzoic acid

Figure 1: (a) Liquid chromatography–electrospray ion source–mass spectrophotometry/mass spectrophotometry spectra (M + H)<sup>+</sup> ions and the total ion chromatogram in full scan mode present in ethyl acetate extract fraction of <i>P. betle</i> leave showing syringic acid and betanin. (b) Liquid chromatography–electrospray ion source–mass spectrophotometry/mass spectrophotometry spectra (M + H)<sup>+</sup> ions and the TIC of ethyl acetate <i>Piper betle</i> fraction showing epicatechin-4-β-8 → catechin, quercetin, and anethole. (c) Liquid chromatography–electrospray ion source–mass spectrophotometry/mass spectrophotometry spectra (M + H)<sup>+</sup> ions and the TIC of ethyl acetate <i>Piper betle</i> fraction showing kaempferol-3-O (4”-O-acetyl-rutinoside and diallyl glucose. (d) Liquid chromatography–electrospray ion source–mass spectrophotometry/mass spectrophotometry spectra (M + H)<sup>+</sup> ions and the TIC of ethyl acetate <i>Piper betle</i> fraction showing piptocarphin B and luteolin-7-<i>O</i>-rutinoside. (e) Liquid chromatography–electrospray ion source–mass spectrophotometry/mass spectrophotometry spectra (M + H)<sup>+</sup> ions and the TIC of ethyl acetate <i>Piper betle</i> fraction showing quercetin-3-<i>O</i>-glucoside, cnicin, myricetin, allylpyrocatechol-3, 4-diacetate, β-caryophyllene, and cinnamic acid. (f) Liquid chromatography–electrospray ion source–mass spectrophotometry/mass spectrophotometry spectra (M + H)<sup>+</sup> ions and the TIC of ethyl acetate <i>Piper betle</i> fraction showing kaempferol 7-O-glucoside. (g) Liquid chromatography–electrospray ion source–mass spectrophotometry/mass spectrophotometry spectra (M + H)<sup>+</sup> ions and the TIC of ethyl acetate <i>Piper betle</i> fraction showing rutin, chlorogenic acid, and <i>p</i>-hydroxybenzoic acid