Genista numidica Spach ssp numidica （Spach） Batt. is a northeast Algerian endemic plant; the aim of this work is about the phytochemical screening, the microscopic analysis and the antimicrobial activity of the aeri...Genista numidica Spach ssp numidica （Spach） Batt. is a northeast Algerian endemic plant; the aim of this work is about the phytochemical screening, the microscopic analysis and the antimicrobial activity of the aerial parts of this species （stems, flowers, seeds and pods）; there is a wealth in polyphenolic compounds： flavonoids （method of Charaux, Paris, 1964） and saponins （method of Braune et al, 1969）, tannins, terpenes, sterols and fatty acids. The microscopic analysis doesn＇t allow a differential identification of the species. The results of aromatogram by the incorporation method of Muller-Hinton on solid medium, showed a significant antimicrobial activity （method Duraffourd,1987） of the extracts, infusion, and the active substances towards bacterial strains, essentially those recognized as antibiotic resistant （Staphylococcus, Acinetobacter, Pseudomonas, Enterobacter, Citrobacter）; the results obtained indicate that the most efficient antibacterial activity was obtained with the pod infusion, the seed extract and the flavonoids. The raw extract has an important antifungal activity on Candida albicans. This could open opportunities for using this species in the treatment of urinary, respiratory, intestinals and cutaneous infections, and as a disinfecting additive on nosocomial area.展开更多
Ethanolic extract of dried Rumex cyprius Murb （polygonaceae） was tested against four pathogenic fungi： three dermatophytes, Microsporum canis, Trichophyton mentagrophytes and T. rubrum, and the causative agent of c...Ethanolic extract of dried Rumex cyprius Murb （polygonaceae） was tested against four pathogenic fungi： three dermatophytes, Microsporum canis, Trichophyton mentagrophytes and T. rubrum, and the causative agent of chalkbrood disease of bees, Ascophaera apis. The extract showed considerable activity against all these fungi. One of the main constituents ofRumex cyprius was isolated and tested for its antimycotic activity. It showed a significant activity against the test fungi and was identified as 1,3,8-trihydroxy-6-methylanthracene-9,10-dione based on its IR, UV-V and 1^H NMR spectra.展开更多
The three water-soluble polysaccharides （PI, PII and Pill）, the ethyl acetate extraction （EA） and its five fractions of petroleum ether （PeF）, ethyl acetate （EaF）, butanol （BuF）, methanol （MeF） and water ...The three water-soluble polysaccharides （PI, PII and Pill）, the ethyl acetate extraction （EA） and its five fractions of petroleum ether （PeF）, ethyl acetate （EaF）, butanol （BuF）, methanol （MeF） and water （WtF） from marine agrobacterium 1202 were prepared and then subjected to antioxidant activity evaluation. The antioxidant activity was tested using the 1, 1-Diphenyl-2-picryl-hydrazyl （DPPH） free radical-scavenging assay, the hydrogen peroxide-induced luminot chemiluminescence （CL） assay and hydroxyl free radical-initiated chemiluminescence （CL） assay. All the fractions exerted significant inhibitory effects on hydrogen peroxide and hydroxyl free radical. The extracts of EA, EaF and BuF could also showed inhibition on DPPH. Among of them, the extracts of EaF showed full of antioxidant activity on the three tested system. The result suggested that the marine agrobacterium 1202 is a potential source of natural antioxidantagent.展开更多
文摘Genista numidica Spach ssp numidica （Spach） Batt. is a northeast Algerian endemic plant; the aim of this work is about the phytochemical screening, the microscopic analysis and the antimicrobial activity of the aerial parts of this species （stems, flowers, seeds and pods）; there is a wealth in polyphenolic compounds： flavonoids （method of Charaux, Paris, 1964） and saponins （method of Braune et al, 1969）, tannins, terpenes, sterols and fatty acids. The microscopic analysis doesn＇t allow a differential identification of the species. The results of aromatogram by the incorporation method of Muller-Hinton on solid medium, showed a significant antimicrobial activity （method Duraffourd,1987） of the extracts, infusion, and the active substances towards bacterial strains, essentially those recognized as antibiotic resistant （Staphylococcus, Acinetobacter, Pseudomonas, Enterobacter, Citrobacter）; the results obtained indicate that the most efficient antibacterial activity was obtained with the pod infusion, the seed extract and the flavonoids. The raw extract has an important antifungal activity on Candida albicans. This could open opportunities for using this species in the treatment of urinary, respiratory, intestinals and cutaneous infections, and as a disinfecting additive on nosocomial area.
文摘Ethanolic extract of dried Rumex cyprius Murb （polygonaceae） was tested against four pathogenic fungi： three dermatophytes, Microsporum canis, Trichophyton mentagrophytes and T. rubrum, and the causative agent of chalkbrood disease of bees, Ascophaera apis. The extract showed considerable activity against all these fungi. One of the main constituents ofRumex cyprius was isolated and tested for its antimycotic activity. It showed a significant activity against the test fungi and was identified as 1,3,8-trihydroxy-6-methylanthracene-9,10-dione based on its IR, UV-V and 1^H NMR spectra.
文摘The three water-soluble polysaccharides （PI, PII and Pill）, the ethyl acetate extraction （EA） and its five fractions of petroleum ether （PeF）, ethyl acetate （EaF）, butanol （BuF）, methanol （MeF） and water （WtF） from marine agrobacterium 1202 were prepared and then subjected to antioxidant activity evaluation. The antioxidant activity was tested using the 1, 1-Diphenyl-2-picryl-hydrazyl （DPPH） free radical-scavenging assay, the hydrogen peroxide-induced luminot chemiluminescence （CL） assay and hydroxyl free radical-initiated chemiluminescence （CL） assay. All the fractions exerted significant inhibitory effects on hydrogen peroxide and hydroxyl free radical. The extracts of EA, EaF and BuF could also showed inhibition on DPPH. Among of them, the extracts of EaF showed full of antioxidant activity on the three tested system. The result suggested that the marine agrobacterium 1202 is a potential source of natural antioxidantagent.
