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Vida Tafakori, Nasim Nasiri,
Volume 6, Issue 4 (1-2020)
Abstract

Plants have been used as medicines in the treatment of diseases from the past to present. In this research, the anti-microbial effects of aqueous and methanolic extracts of Erythrostemon gilliesii were studied. For this purpose, fresh flowers were ground and then macerated in methanol 100% and water overnight. After the evaporation of solvents, anti-microbial activities of the concentrated extracts were evaluated by the well-diffusion method on Klebsiella pneumoniae, Pseudomonas aeroginosa, Methicilin resistance, Staphylococcus aureus, Bacillus subtilis and Candida albicans. The results showed that the extracts were effective on different bacteria and yeasts. In order to determine the minimum inhibitory concentration (MIC) and minimum biocidal concentration (MBC), anti-microbial tests were performed in micro-plates. Subsequently, the results indicated that the extracts were stable at different temperatures. The aqueous and methanolic extracts of the flowers of E. gilliesii had exhibited anti-microbial effects against important infectious microbes and could be introduced as an excellent source for anti-microbial agents.
 
 
Vida Tafakori,
Volume 8, Issue 4 (1-2022)
Abstract

The purpose of this study was to evaluate phytochemical characterizations and the in vitro antifungal capacity of the aqueous and methanolic extracts of the flower of Tulipa biflora Pall., against various yeast and mold species. For this purpose, fresh flowers were grinded and then macerated in methanol and water overnight, the resulted extracts were then evaluated by various tests. The results indicated that the extracts had different phytochemical components such as terpenoids, tannins, flavonoids, alkaloids, phenols, and phlobatannins. After the evaporation of solvents, antifungal activities of the concentrated extracts were evaluated by the well-diffusion method on Candida albicans, Trichosporon asahii, Yarrowia lipolytica, Aspergilus niger and Fusarium oxysporum. The results showed that the extracts were effective on yeasts and mold species studied except for Aspergilus niger. In order to determine the minimum inhibitory concentration (MIC) and minimum biocidal concentration (MBC) of the extracts, anti-microbial tests were performed in micro-plates. The methanolic extract had more antifungal effectsthan that in the aqueous extract. Therefore, the extract of Tulipa biflora could be introduced as a source for antifungal agents.
 
 

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