Antibacterial activity of various stem extracts of Dalbergia Coromandeliana

Edayadulla, Naushad; Ramesh, P.

doi:10.1016/s2221-1691(12)60422-5

Cited by 6 publications

(4 citation statements)

References 27 publications

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“…Aqueous extracts were found to be effective as well as the hydromethanolic extracts. These results were not in accordance to some researchers who had reported that the organic extracts had better antimicrobial activity as compared to aqueous extracts especially against Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus [27]. The antibacterial action of the aqueous extracts could be attributed to the anionic components such as thiocyanate, nitrate, chlorides and sulfates apart from other water-soluble components which were naturally occurring in the plant material [28,29].…”

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confidence: 71%

Screening of some plant materials used in South-West Algerian traditional medicine for their antibacterial activity

Naima

Benmehdi

Allali

et al. 2017

ijpm

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The initial introduction of new medicinal agents into the health care system sometimes, requires information beyond that is recorded in libraries relying instead, on reports available through traditions and healers within a society. This paper explored the antibacterial activity of aqueous and hydromethanolic extracts of nine folkloric medicinal plant from Bechar region (southwest Algeria) namely: A. nardus, A. schoenanthus, G. vulgaris, two species of H. scoparia green & red, P. laevigata, R. tripartita, T. gallica and T. nudatum, frequently used in the local traditional medicine. The antibacterial activity of different extracts were evaluated by using disc diffusion method agar and antibiotics susceptibility of ten selected microorganisms: seven reference strains, Bacillus cereus, Enterococcus faecalis, Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Salmonella typhi, and three clinically isolated strains, Escherichia coli (Urinary Tract Infection), Escherichia coli (Vaginal Infection) and Staphylococcus aureus (Skin Infection).The maximum antibacterial activity was recorded against the gram negative reference strains Pseudomonas aeruginosaand Escherichia coli with a maximum inhibition diameter of 15.6 ± 0.5 and 15.0 ± 1.4 mm respectively displayed by the aqueous extract of T. gallica, followed by the activity detected by the hydromethanolic extract of R. tripartita against the gram negative reference strain Pseudomonas aeruginosa (14.6±1.2 mm) and the aqueous and hydromethanolic extracts of R. tripartita against the gram negative reference strains Pseudomonas aeruginosa and Escherichia coli with a maximum inhibition diameter of 14.3 ± 2.0 and 14.3±0.5 mm, respectively.According to the present study, H. scoparia red, P. laevigata, R. tripartita, and T. gallicacan be served as broad spectrum antibiotic and used as a potent source of natural antibacterial agents by replacing commercially available synthetic drug that may have a large number of side effects.

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Section: Page | 626 |contrasting

confidence: 71%

Screening of some plant materials used in South-West Algerian traditional medicine for their antibacterial activity

Naima

Benmehdi

Allali

et al. 2017

ijpm

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“…Plants are the traditional sources for many chemicals and used as pharmaceutical biochemicals, fragrances, food colors, and flavors in different countries especially in India [4][5][6][7]. Most herbal medicines were prepared from crude plant extracts, which comprise a complex mixture of different secondary metabolites [8][9][10]. Gas chromatography and mass spectroscopy (GC-MS) is the methods used for testing the amount of some active principles in herbs used in cosmetics, drugs, pharmaceutical, and food industry.…”

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confidence: 99%

In Vitro Antibacterial Activity and Gas Chromatography-Mass Spectrometry Analysis of Ethanolic Extract of Leaves of Elettaria Cardamomum L. Maton

Prabu¹,

Edayadulla²,

Anand

2019

Asian J Pharm Clin Res

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Objective: The objective of the present study is to determine the possible phytoconstituents identified by gas chromatography and mass spectrometry (GC-MS) analysis of an ethanolic leaves extract of Elettaria cardamomum L. Maton.Methods: The extraction of E. cardamomum was done by cold solvent extraction system at room temperature. GC-MS analysis of lyophilized ethanolic leaves extract of plant samples was carried out by GC-MS-GC Clarus 500 Perkin Elmer. Results: In E. cardamomum, 21 phytochemicals were identified among which retinal, 9-cis-showed the highest area (44.86%) and benzeneethanamine, α-methyl- showed the lowest area (0.12%). The major compounds identified were retinal, 9-cis-, 1-heptatriacotanol, phytol, n-hexadecanoic acid, naphthalene,decahydro-1,1,4atrimethyl-6-methylene-5-(3-methyl-2-4-pentadienyl)-[4aS-(4aα,5α,8aα)]-, β-pinene, 2H-pytan-3-ol,6- ethenyltetrahydro-2,2,6-trimethyl-and cyclopropane, trimethanol, (2-methyl-1-propanylidene).Conclusion: GC-MS analysis revealed the presence of hydrocarbon alkane, ester, terpenes, phenolic compounds, steroids, and fatty acids in E. cardamomum. These active phytoconstituents contribute to the medicinal efficacy of the plant, and the plant can be used for the sourcing of these compounds.

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“…Bioguided assays and fractionations led to the isolation of seventeen flavonoids, 1-5, 7, and 9-19 from the potential chloroform fraction (DB11) of the methanol extract of D. tonkinensis heartwood. The chemical structures of these known compounds were identified by comparison of their spectroscopic data with the literature data, and include the following: three isoflavones formononetin (1), biochanin A (11), and calycosin (12); two isoflavanones sativanone (2), and 3'-O-methylviolanone (15); five flavanones naringenin (3), liquiritigenin (4), pinocembrin (5), butin (9), and eriodictyol (13); three flavones luteolin (16), quercetin (17), and apigenin (18); two neoflavanoids 3'-hyrdoxy-2,4,5-trimethoxydalbergiquinol (7), and 3'-hyrdoxymelanettin (10); a chalcone isoliquiritigenin (14); and an aurone sulfuretin (19) (Figure 1) [7]. In accordance with the previous studies on Dalbergia species, our results demonstrated the predominant occurrence of flavonoids, implying that traditional uses of either D. tonkinensis species or the other related Dalbergia species could be responsible for the enriched flavonoids.…”

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confidence: 99%

“…Figure 12:The relative growth of microbacterium P. gingivalis dichloromethane extract of D. melunoxylon bark were found to show notable activity against bacteria, and fungi, respectively[9,10].…”

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confidence: 99%

Antimicrobial Activity of the Constituents of Dalbergia tonkinensis and Structural-Bioactive Highlights

Oda

Hayashi

Yamaguchi

et al. 2018

Natural Product Communications

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The vulnerable plant Dalbergia tonkinensis Prain, is a rare species, native to Vietnam. Phytochemical investigations and biological evaluations of this species are quite limited. Antimicrobial screening has suggested that, at the low dose of 1.0 mg/mL, the methanol extracts of the leaf, stem bark, and root, as well as chloroform fraction of heartwood can serve as useful sources against seven gram-positive skin microbacteria, Bacillus cereus (ATCC27522), Escherichia coli (JM109), Staphylococcus aureus (ATCC25923), Staphylococcus epidermidis (ATCC14990), Streptococcus pneumonia (ATCC49619), Streptococcus pyogenes (ATCC12344), and Vibrio parahaemolyticus (RIMD2210010), and four oral gram-positive microbacteria Streptococcus mutans (ATCC 25175), Streptococcus mitis (ATCC903), Streptococcus sobrinus (ATCC 33478), and Porphyromonas gingivalis (ATCC33277), with an inhibitory percentage of 60-80% growth for several strains Bacillus cereus, Escherichia coli, and Streptococcus pneumonia. We further assessed antimicrobial activities of the enriched diverse flavonoids from chloroform fraction of its heartwood. Extensive structural activity relationship studies showed structure function closely related to the antimicrobial activity, in which methoxylation at C-2’, and 4’ in isoflavanones, hydroxylation at C-3’ in flavones, substitution at C-5 in isoflavones, and lactone opened ring in neoflavonoids were found to increase the effective inhibitions. In the second antimicrobial assessment, the isolated flavonoid liquiritigenin showed the MIC values of 50, and 100 μg/mL against the microbacterial strains Staphylococcus aureus subsp. aureus (ATCC 11632), and Aspergillus niger (439), respectively, whereas the MIC value of 100 μg/mL was assignable to biochanin A against microbacterium Staphylococcus aureus subsp. aureus.

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Antibacterial activity of various stem extracts of Dalbergia Coromandeliana

Cited by 6 publications

References 27 publications

Screening of some plant materials used in South-West Algerian traditional medicine for their antibacterial activity

Screening of some plant materials used in South-West Algerian traditional medicine for their antibacterial activity

In Vitro Antibacterial Activity and Gas Chromatography-Mass Spectrometry Analysis of Ethanolic Extract of Leaves of Elettaria Cardamomum L. Maton

Antimicrobial Activity of the Constituents of Dalbergia tonkinensis and Structural-Bioactive Highlights

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