Antibacterial activity of medicinal plant extracts - SciELO
Natarajan E, Senthilkumar S, Francis XT, Kalaiselvi V. Antibacterial activities of leaf extracts of Alangium salviifolium. Journal Tropical medicinal Plants2003; 4:9-13.
Antibacterial activity of the seed extracts of
Roxb and : The methanolic and aqueous extracts of the leaves from Roxb exhibit strong antibacterial against Gram positive bacteria such as ,, as well as Gram negative bacteria such as ,and. The ethyl acetate extract showed moderate activity against and (). The chemical constituents of essential oil from the fresh leaves of are davanone, α-humulene, β-caryophyllene, bicyclogermacrene and sabinene. These bioactive compounds showed significant against ,,and ().
One of the most extensively researched s is garlic () which has potent antibacterial action due to allicin that has inhibitory effects (multiple) on various enzyme systems that are thiol dependent. A range of potencies have been shown by individual constituents like garlic oil and garlic powder during studies against enteric bacteria in human including . It has been found that against certain strains of garlic and omeprazole have synergistic effects but their concurrent administration is not much effective (; ; ). Garlic contains ajoene which exhibit antifungal and antidermatophytic activity. Aqueous extract of garlic is effectual against 90% of the dermatophytes and is capable of inhibiting a wide range of fungi in cases of ringworm infections ().
Antibacterial Activity Of Plant Extracts Thesis
: The ethanolic, petroleum ether, methanol and ethyl acetate extracts from root, stem and leaves of plant show excellent against many Gram positive bacteria such as ,, and Gram negative bacteria such as and Although, benzene and chloroform extracts have antibacterial potential but these effects are least as compared to other other alcoholoic extracts ().
Antibacterial activity of plant extracts 247 Brazilian ..
(Licorice) and (Cat's claw): and extract show good antibacterial activity against oral pathogens such as and suggesting their possible role to control and endodontic infections (; ; ). The ethanolic and aqueous extracts from leaves and root extracts of licorice show dose dependent against ,,,and . Moreover, the of the leaves is better against Gram positive bacteria ().
The antibacterial activity of plant extracts containing …
: The m and different fractions (ethyl acetate, n-butanol, chloroform and n-hexane) of leaves possess against , ,and (). Likewise, the ethanolic and ms from stem, berries and whole plant of inhibits the growth of , , and . The methanolic extract generally shows higher than the s. Furthermore, the extracts of the whole plant have been reported to possess anti-bacterial activity ().
Thesis On Antibacterial Activity Of Plants
L. (Guava): The antibacterial compound mainly found in guava are reducing sugar, alkaloids, saponins, tannins, phlobatannins, terpenoids and poly phenols. The crude aqueous and methanol extract from the leaf and bark of guava possess strong against MDR . The MIC for the crude aqueous and m is 1,250 and 850 μg mL-1, respectively. These concentrations were bactericidal against 107 CFU mL-1 of . The of guava has other advantage of being stable at 100°C for 15-20 min, indicating the nonprotein nature of the active component (). The ethanol and hot water extracts possess less antibacterial activity compared to methanolic and ethyl acetate extracts ().
Lantana / KANTUTAY / Lantana camara: Philippine …
: The ethanolic and ms of possess broad spectrum antibacterial activities. The extracts have lower potency for in comparison to other bacteria. The m on the other hand showed significant (MIC 0.5-10 mg mL-1) than the (MIC 0.5-6.25 mg mL-1). This activity may be due to the presence of soluble phenolic and poly ().