Volatile and non-volatile compounds and antimicrobial activity of Mansoa difficilis (Cham.) Bureau & K. Schum: (Bignoniaceae)

Abstract

Recebido em 30/4/12; aceito em 1/10/12; publicado na web em 9/11/12Essential oil from the leaves of Mansoa difficilis was analyzed by GC/MS. Oct-1-en-3-ol (49.65%) was the major compound, but diallyl di-and trisulfide were also present (0.85 and 0.37%, respectively), justifying the garlic-like odor of the crushed leaves. The hexane and methanol extracts of the leaves and stems afforded as main constituents a mixture of linear hydrocarbons, spinasterol, stigmasterol, ursolic and oleanolic acids, two apigenin derivatives and verbascoside. The hexane and methanol extracts of leaves were tested for antimicrobial activity against ten microorganisms. The hexane extract was active against both Psedomonas aeruginosa and Staphylococcus aureus.

Antimicrobial activity of Aspilia latissima (Asteraceae)

“…and kaurenoic acid (L-B) were identified. stigmasterol also contributed to antibacterial activity against S. aureus ( Guilhon et al ., 2012 ; Yagi et al ., 2012 ).…”

Chromatographic profile of xanthones and flavonoids in the anti-dengue extracts of Fridericia samydoides (Cham.) L.G. Lohmann (Bignoniaceae)

“…The apigenin-7-O-glucuronide was isolated from the extract of Jacaranda ovalifolia and Millingtonia hortensis (Gouda et al, 2003;Hase et al, 1995). The apigenin-7-O-glucoside is present in the extracts of Mayodendron igneum, Macfadyena unguis-cati and Mansoa difficilis (Aboutabl et al, 2007;Hashem, El-sawi, Sleem, 2007;Guilhon et al, 2012). Chrysin-7-O-glucuronide was isolated from Oroxylum indicum seeds, while acacetin 7-O-glucuronide was isolated from Tecoma capensis leaves (Marzouk, 2002;Wen, Zhang, Yin, 2011).…”