Gram-Negative Bacteria

Publication Title: 
Letters in Applied Microbiology

Sandalwood oil has been found in numerous therapeutic applications in traditional medicines such as Chinese traditional medicine and Ayurveda. However, there are no comparative accounts available in the literature that focused on in vitro and in vivo tree sample-derived extracts. Combined dichloromethane and methanol extracts were obtained from in vitro samples, that is, callus, somatic embryo and seedlings, and in vivo from leaves of non-oil-yielding young and oil-yielding matured trees.

Author(s): 
Misra, B. B.
Dey, S.
Publication Title: 
International Journal of Antimicrobial Agents

The effect of ether, alcoholic and water extracts of black myrobalan (Teminalia chebula Retz) on Helicobactor pylori were examined using an agar diffusion method on Columbia Agar. Water extracts of black myrobalan showed significant antibacterial activity and had a minimum inhibitory concentration (MIC) and minimum bacteriocidal concentration (MBC) of 125 and 150 mg/l, respectively. The extract was active after autoclaving for 30 min at 121 degrees C. Plant powder (incorporated in agar) gave higher MIC and MBC values (150 and 175 mg/l, respectively).

Author(s): 
Malekzadeh, F.
Ehsanifar, H.
Shahamat, M.
Levin, M.
Colwell, R. R.
Publication Title: 
Fitoterapia

Fifty methanolic plant extracts belonging to 44 plant species of 33 families finding use in Iranian folkloric medicine were screened for antibacterial activity. Thirty samples, including 28 species in 20 families, had antibacterial activity against at least on one of the bacteria. Among the active plants, 32.6% were active against G(-), 62% against G(+), and 47.3% against both G(-) and G(+) bacteria. Dianthus coryophyllus was active against all tested G(-) and G(+) bacteria except Micrococcus luteus.

Author(s): 
Bonjar, G. H. Shahidi
Publication Title: 
Journal of Natural Medicines

Antibacterial activity of hot aqueous and methanolic extracts prepared from six plants (Terminallia chebula, Terminallia bellerica, Phyllanthus emblica, Punica granatum, Lawsonia alba and Mikania micrantha) used in traditional folk medicines of India were screened against five pathogenic bacteria (Staphylococcus aureus MTCC 2940, Bacillus subtilis MTCC 441, Escherichia coli MTCC 739, Proteus vulgaris MTCC 426 and Enterobacter aerogenes MTCC 111). The highest antibacterial potentiality was exhibited by the methanolic leaf extract of T. chebula, followed by the aqueous fruit extract of T.

Author(s): 
Ghosh, Anupam
Das, Bidus Kanti
Roy, Arup
Mandal, Biplab
Chandra, Goutam
Publication Title: 
Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy

A green rapid biogenic synthesis of silver nanoparticles (Ag NPs) using Terminalia chebula (T. chebula) aqueous extract was demonstrated in this present study. The formation of silver nanoparticles was confirmed by Surface Plasmon Resonance (SPR) at 452 nm using UV-visible spectrophotometer. The reduction of silver ions to silver nanoparticles by T. chebula extract was completed within 20 min which was evidenced potentiometrically.

Author(s): 
Mohan Kumar, Kesarla
Sinha, Madhulika
Mandal, Badal Kumar
Ghosh, Asit Ranjan
Siva Kumar, Koppala
Sreedhara Reddy, Pamanji
Publication Title: 
Mikrobiologicheski? Zhurnal
Author(s): 
Kvasnikov, E. I.
Grigorov, Iu G.
Kovalenko, N. K.
Medovar, B. Ia
Shishlevskaia, T. N.
Palekha, S. I.
Kozlovskaia, S. M.
Publication Title: 
BMC complementary and alternative medicine

BACKGROUND: Withania somnifera, also known as ashwagandha, is an important herb in ayurvedic and indigenous medical systems. The present study was designed to evaluate the antioxidant and antibacterial activities of an 80% aqueous methanolic extract of W. somnifera roots (WSREt), fruits (WSFEt) and leaves (WSLEt). METHODS: Several assays were performed to determine the antioxidant properties of this herb including 1,1-diphenyl-2-picrylhydrazyl radical (DPPH) scavenging activity, ferric reducing antioxidant power (FRAP), ferrous chelation and inhibition of β-carotene bleaching.

Author(s): 
Alam, Nadia
Hossain, Monzur
Mottalib, Md Abdul
Sulaiman, Siti Amrah
Gan, Siew Hua
Khalil, Md Ibrahim
Publication Title: 
Journal of Ethnopharmacology

Adiantum Linn. of Adiantaceae family is one of the most common and widely distributed species. Ethnomedicinally, the genus is important and popularly known as "Hansraj" in Ayurvedic System of Medicine. It has been used in cold, tumors of spleen, liver and other viscera, skin diseases, bronchitis and inflammatory diseases. It is also considered as tonic and diuretic. In the present study its four important species, i.e. Adiantum capillus-veneris, Adiantum peruvianum, Adiantum venustum and Adiantum caudatum were collected and extracted with methanol.

Author(s): 
Singh, Meenakshi
Singh, Neha
Khare, P. B.
Rawat, A. K. S.
Publication Title: 
Pharmaceutical Biology

CONTEXT: The roots of Plumbago zeylanica Linn. (Plumbaginaceae) are reputed to have a wide spectrum of therapeutic properties in the Ayurvedic system of medicine. They are useful in curing many ailments such as skin diseases, diarrhea, plague and leprosy. OBJECTIVE: The study was aimed at isolating, separating and evaluating the antimicrobial properties of compounds such as neoisoshinanolone and 1-epineo-isoshinanolone from the roots of P. zeylanica. MATERIALS AND METHODS: The crude petroleum ether extract of roots of P.

Author(s): 
Jetty, Annapurna
Subhakar, Chennupati
Rajagopal, Duddumpudi
Jetty, Manasa
Subramanyam, Mukkamala
Marthanda Murthy, Madugula
Publication Title: 
BMC complementary and alternative medicine

BACKGROUND: Withania somnifera, also known as ashwagandha, is an important herb in ayurvedic and indigenous medical systems. The present study was designed to evaluate the antioxidant and antibacterial activities of an 80% aqueous methanolic extract of W. somnifera roots (WSREt), fruits (WSFEt) and leaves (WSLEt). METHODS: Several assays were performed to determine the antioxidant properties of this herb including 1,1-diphenyl-2-picrylhydrazyl radical (DPPH) scavenging activity, ferric reducing antioxidant power (FRAP), ferrous chelation and inhibition of β-carotene bleaching.

Author(s): 
Alam, Nadia
Hossain, Monzur
Mottalib, Md Abdul
Sulaiman, Siti Amrah
Gan, Siew Hua
Khalil, Md Ibrahim

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