| ORIGINAL ARTICLE |
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| Year : 2010 | Volume
: 6
| Issue : 23 | Page : 212-218 |
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Phytochemical investigation and antimicrobial activity of Psidium guajava L. leaves
AM Metwally, AA Omar, FM Harraz, SM El Sohafy
Department of Pharmacognosy, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
Correspondence Address:
S M El Sohafy
El Khartoum Square, Azarita, Faculty of pharmacy, Alexandria
Egypt
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/0973-1296.66939
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Psidium guajava L. leaves were subjected to extraction, fractionation and isolation of the flavonoidal compounds. Five flavonoidal compounds were isolated which are quercetin, quercetin-3-O-α-L-arabinofuranoside, quercetin-3-O-β-D-arabinopyranoside, quercetin-3-O-β-D-glucoside and quercetin-3-O-β-D-galactoside. Quercetin-3-O-b-D-arabinopyranoside was isolated for the first time from the leaves. Fractions together with the isolates were tested for their antimicrobial activity. The antimicrobial studies showed good activities for the extracts and the isolated compounds. |
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