Hadis Roshandel, Rashid Jamei,
Volume 2, Issue 1 (6-2015)
Abstract
The tubers of Bongardia chrysogonum, belonging to to Podophyllaceae, are rich in alkaloids. In this study, total alkaloid content of the tubers of this plant in Naghadeh, Zanjan and Boukan were determined by spectrophotometeric method. In addition, the effects of soil characteristics such as total nitrogen, potassium, pH, soil texture and tubers nitrate levels on the plant total alkaloid content were measured. The results of the analyses indicated significant differences between the total alkaloid content of B.chrysogonum in these three regions. Moreover, the results showed significant differences among nitrates amounts of this plant in these habitats. The highest and lowest nitrate contents belong to Naghadeh and Boukan plants, respectively. The evaluation of soil samples of these three regions indicated that the texture of soil in Naghadeh is clay-loamy, in Zanjan it is silty- clay- loamy and in Boukan it is loamy- sandy. It was also discovered that increase in plant total alkaloid content depends on the increase of sand percentag in soil to some extent. The effect of soil pH on total alkaloid content turned out to be non-significant.
Vida Tafakori,
Volume 8, Issue 4 (12-2021)
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.
