In vitro antibacterial activity of some Yemeni medicinal plants

الملخص EN

Extracts from different tissues of 11 Yemeni medicinal plants- Adansonia digitata L, leaves; Caralluma penicillata (Defl.) N.E.Br., succulent stems ; Cometes abyssinica (R.Br.) Wallich., Roots ; Cupressus sempervirens L.

leaves ; Ficus vasta Forsk., fruits ; Heliotropium subulatum (DC.) Martell, aerial part ; Lavandula pubescens Decne., aerial part ; Pergularia daemia (Forsk).

Chiov., leaves ; Pulicaria orientalis Jaub.

And Sp., aerial part ; Reichardia tingitana (L.), leaves and Tagetes minuta L., aerial part, were tested for antibacterial activity against three gram-positive bacteria, Staphylococcus aureus (ATCC 29737), Staphylococcus epidermidis (ATCC 12228) and Bacillus subtilis (ATCC 6633) and two gram-negative bacteria, Escherichia coli (ATCC 10536) and Klebsiella pneumoniae (ATCC 10031), using a qualitative agar diffusion test.

Extracts from 7 plants were found to possess various antibacterial activities against one or more of the tested microorganisms.

Extracts from Lavandula pubescens Decne and Pulicaria orientalis Jaub.

And Sp.

were the most active.