Antimicrobial secondary metabolites isolated
-
Chemical investigation of the sesame-associated fungal strain Penicillium hetheringtonii IMBC-NMTP04 resulted in isolation of five compounds, penicitrinone A (1), dihydrocitrinin (2), janthinone (3), coniochaetone B (4), and 9-oxo-10(E),12(E)-octadecadienoic acid (5).
8p viambani 18-06-2024 2 1 Download
-
Flavonoids are a diverse group of natural compounds extensively studied in various research articles. They are widely distributed in the plant kingdom and exhibit various biological activities, including antioxidant, antiinflammatory, anticancer, antiviral, and antimicrobial effects. The genus Knema Lour., which contains many species in Southeast Asia, has been traditionally used to treat various ailments. The current review aims to provide a comprehensive update on the isolation of flavonoids and other secondary metabolites from the genus Knema Lour. between 1978 and 2022.
15p dianmotminh02 03-05-2024 5 2 Download
-
Thesis aims: Isolation and screening for Vietnam antimicrobial marine-derived actinobacteria strains. Isolation and structure elucidation of compounds from 2 promising isolated actinobacteria strains. Determination the antimicrobial activities of isolated compounds.
26p extraenglish 24-05-2021 22 3 Download
-
Seven compounds were isolated and characterized from the culture broth of the marine bacteria Nocardiopsis sp. (strain G057), which was isolated from sediment collecting at Cô Tô – Quảng Ninh. Their structures were determined by spectroscopic analysis including MS and 2D NMR, as well as by comparison with reported data in the literature. All compounds were evaluated for their antimicrobial activity against a panel of clinically significant microorganisms. Compounds 1, 2 and 7 selectively inhibited Escherichia coli with a MIC value of 32, 64, 8 μg/mL, respectively.
5p cothumenhmong11 10-05-2021 8 1 Download
-
Five secondary metabolites including three flavonoids, 6-lavandulyl-5,7,2′,4′-tetrahydroxyflavanone (1), 5′- lavandulyl-2′-methoxy-2,4,4′,6′-tetrahydroxychalcone (2), 6-lavandulyl-7-methoxy-5,2′,4′-trihydroxyflavanone (3), and two alkaloids, tryptoline (4), and norharman (5) were isolated from the culture broth of Streptomyces sp. C011. Their structures were determined by spectral data analysis, including MS, 2D NMR, and CD spectrum. All the separated compounds were evaluated for their antimicrobial activities. Compounds 1, 2, 3 and 5 exhibited antimicrobial activity...
5p cothumenhmong11 06-05-2021 13 2 Download
-
The metabolite 2-(1,1-diallyl-but-3-enyl)-5-nonyl-phenol isolated from Streptomyces sp. TC1 exhibited antimicrobial activity against bacterial leaf blight pathogen Xanthomonas oryzae pv. oryzae (Xoo). The in vitro antimicrobial activity was found to be between 1.8-2.5 cm in agar well diffusion assay against the tested Xoo isolates and 200 µg/ml in terms of minimum inhibitory concentration. The isolated compound showed well binding with the virulence proteins of Xoo by producing a better docking score in molecular docking studies.
10p nguaconbaynhay10 22-01-2021 12 1 Download
-
Isolation and screening for Vietnam antimicrobial marine-derived actinobacteria strains; isolation and structure elucidation of compounds from 2 promising isolated actinobacteria strains; determination the antimicrobial activities of isolated compounds.
26p capheviahe26 25-01-2021 34 5 Download
-
Actinomycetes have got considerable attention worldwide due to the production of many useful bioactive metabolites. In the present study, the antimicrobial potential of novel Actinomycetes has been evaluated by the initial screening of seven rhizosphere samples in Egypt. The primary and secondary screening were performed against Bacillus cereus (ATCC33018), and E.coli O157 (ATCC93111) as model strains of Gram positive and Gram negative species, respectively.
12p trinhthamhodang9 16-12-2020 19 2 Download
-
In nature, there exist a wide variety of microbes that can be of any economical importance to humans. A specialized group of microorganisms includes pigmented yeasts. They are yeasts that develop colored pigment as their secondary metabolites. In this study, pigmented yeasts were isolated from different sample (soil, leaves, fruits, coconut, and air) on Sabouraud’s agar. Four strains were selected that showed pigmentation. Various morphological and biochemical tests were performed for identification of the strains.
9p chauchaungayxua8 03-10-2020 5 2 Download
-
This study was designed to evaluate the antibacterial activity of methanolic Myristica fragrans seed extract tested against four bacterial species isolated as oral pathogen. The susceptibility of these different bacterial species toward the extract of this plant seed was compared with each other. Results showed that methanolic extract exhibited antibacterial activity against gram positive bacterial species, the diameter of inhibition zone reached 28±0.14 mm against E. faecalis and 24±0.002 mm against S. mitis by extract.
5p nguaconbaynhay6 23-06-2020 11 1 Download
-
The soil-derived fungus Aspergillus sp. isolated from the rhizospheric soil of Phoenix dactylifera (Date palm tree) and cultured on the large scale solid rice medium yielded a novel compound 1-(4-hydroxy-2,6-dimethoxy-3,5- dimethylphenyl)-2-methyl-1-butanone (1) and four known compounds; citricin (2), dihydrocitrinone (3), 2, 3, 4-trimethyl-5, 7-dihydroxy-2, 3-dihydrobenzofuran (4) and oricinol (5).
6p vijiraiya2711 27-05-2020 7 1 Download
-
This is the first study demonstrating antibiotic potential of symbiotic bacteria and their metabolite profiling from cultured bacterial endosymbionts associated with root nodules of Leguminaceae plant Dolichos lab lab. Our study has significant scope and it has never been reported. Indian farming area especially semi arid areas host varieties of Legumes with novel secondary metabolites producing organisms.
7p trinhthamhodang5 16-05-2020 10 0 Download
-
Mangroves are the most productive ecosystems and contain highly diverse plants and microbial communities. Mangrove endophytes are proved to be a rich source of bioactive secondary metabolites. The biological molecules produced by endophytes play an important role in protection of mangrove plants against herbivores, insects as well as pathogens. The present study aimed to isolate the endophytic bacteria from the mangrove plant Rhizophora stylosa and screen antimicrobial and antioxidant activity of ethyl acetate extracts from the isolated endophytic bacteria.
9p 12120609 23-03-2020 19 1 Download
-
The production of secondary metabolites from Pseudomonas species has been the most economical and biotechnological source for the discovery of new bioactive compounds. The aim of the present study was to isolate potent bioactive secondary metabolites producing Pseudomonas spp. strain from the agricultural soil of Marathwada region. There were 16 isolates obtained from different areas in Marathwada region and studied for the production of secondary metaboilts and its antibacterial properties.
7p cothumenhmong3 22-02-2020 19 0 Download
-
Pseudomonas represents as one of the most abundant class of bacterial genus in many antagonistic root-associated communities. Pseudomonas spp. residing in the rhizosphere has the ability to produce antimicrobial metabolites including phloroglucinol derivatives 2,4-DAPG, which is a major class of secondary metabolite protecting plants against different types of phytopathogens. The present study was conducted to isolate 2,4-DAPG producing Pseudomonas fluorescens isolates from Rhizosphere soil samples of different crops.
14p kequaidan2 11-12-2019 13 1 Download
-
Soft corals belonging to the genus Cespitularia have been well recognized as a rich source of bioactive secondary metabolites especially diterpenoids. This review furnishes an overview of all naturally isolated compounds from Cespitularia genus as, diterpenoids, nitrogencontaining diterpenes, sesquiterpenoids and steroids as well as biological activities of these species. Cespitularia species have been studied for their anticancer, immunomodulatory, antiviral, antimicrobial, and anti-inflammatory activities. This work is the first review published on this topic.
16p kequaidan1 16-11-2019 11 1 Download
-
The marine environment is an extremely complex ecosystem and contains a broad spectrum of fungal diversity. Marine fungi have been shown to be tremendous sources for new and biologically active secondary metabolites. The present study aims to isolate and screen antimicrobial properties of 100 fungus strains from different marine sources including seaweeds, soft corals, sponges and sediment collected at Nha Trang Bay, Vietnam.
7p viathena2711 08-10-2019 24 0 Download
-
Endophytic actinomycetes colonize in living plant tissues without causing harm to the host plant. In fact, they are regarded as effective bio-control agents and plant growth promoters due to their ability to activate plant self-immunity and produce biologically active secondary metabolites. Recent studies reported higher rates in finding new strains and antimicrobial substances among endophytes than actinomycetes from soil and plant surface.
8p nguyenhong1235 28-11-2018 45 1 Download
-
Nine compounds (1-9) were isolated and characterized from the culture broth of the marine bacteria Micromonospora sp. (strain G068), which was isolated from sediment collected at Co To – Quang Ninh. Their structures were determined by spectroscopic analysis including MS, 1D NMR and 2D NMR, as well as by comparison with reported data in the literature. All compounds were evaluated for their antimicrobial activities against a panel of . Compounds 1, 6, and 9 selectively inhibited Escherichia coli with MIC values of 128, 128 and 64 μg/mL, respectively.
7p cumeo3000 01-08-2018 23 0 Download