Antibacterial activities of <i>Sesbania grandiflora</i> extracts

Abstract

In this study, Sesbania grandiflora, a plant in the Leguminosae family, was investigated for its antibacterial activities. The agar well diffusion assay as well as the agar and broth dilution assays were used for determination of antibacterial activities. The crude ethanolic extracts obtained from different parts of this plant exhibited different potent activities. The stem bark has the most potential to yield an extract with the highest antibacterial action. The fractionation of the stem bark with different solvents indicated that the fractionated extracts obtained from ethyl acetate or butanol possessed the most pronounced antibacterial activity. The kinetic study of bactericidal activities revealed that the butanol fractionated extract of the stem bark was effective against Gram negative bacteria. This study suggests that the stem bark of S. grandiflora contains promising antibacterial substances for clinical purposes.

Bactericidal action of <i>Alpinia galanga</i> essential oil on food-borne bacteria

“…Rhizomes of A. galanga (6)(7)(8)(9)(10)(11)(12) and drying them at 60°C for 48 h. The dried rhizome was ground into a fine powder for use in solvent extraction.…”

“…The MIC and MBC of gentamicin against E. coli (ATCC 25922) and S. typhi (DMST 5784) were 16 and 8 μg/mL, respectively. However, gentamicin's MIC values against S. aureus (ATCC 25923), S. sonnei (DMST 561), and L. monocytogenes (DMST 1730) were 8, 87 8, and 4 μg/mL, respectively, and its corresponding MBC values were 16, 16, and 8 μg/mL, respectively. A point worth mentioning is that A. galanga essential oil had strong activity against Gram-negative bacteria, which are known for their insensitivity to many antibacterial agents (22)(23)(24).…”

“…Some have been used to treat infectious diseases caused by pathogenic microorganisms (7,8). The active substances generally accumulate in a particular part of the plant.…”

“…The active substances generally accumulate in a particular part of the plant. Anantaworasakul et al reported that the antibacterial active extract of Sesbania grandiflora could be obtained from the stem bark of the plant (8). Alpinia galanga, a plant in the Zingiberaceae family, is widely distributed in tropical areas.…”

ANTIMICROBIAL ACTIVITY OF Hibiscus sabdariffa AND Sesbania grandiflora EXTRACTS AGAINST SOME G–ve AND G+ve STRAINS

“…They or their products are used in controlling various diseases and disorder symptoms as cough, fever, bronchitis, itching, pneumonia, ulcers, and diarrhea ANANTAWORASAKUL et al, 2011] . Hibiscus sabdariffa is reported as one of the most important medicinal plants that have been widely used.…”