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首页> 外文期刊>African Journal of Biotechnology >Inhibition of the development of pathogenic fungi by extracts of some marine algae from the red sea of Jeddah, Saudi Arabia
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Inhibition of the development of pathogenic fungi by extracts of some marine algae from the red sea of Jeddah, Saudi Arabia

机译：沙特阿拉伯吉达红海中某些海藻的提取物抑制病原真菌的生长

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In this study, the predominant marine algae were collected from three different sites in the coastal area of Al-Kumrah at south of the Red sea of Jeddah, during summer and autumn 2009. The different marine algae belonged to Chlorophyta (Enteromorpha prolifera?and?Ulva reticulata), Phaeophyta (Cystoseira myrica,?Padina pavonica,Sargassum portieriatum?and?Turbinaria triquetra) and Rhodophyta (Gracilaria multipartita). Algal extraction was achieved successively by using petroleum ether, diethyl ether, ethyl acetate and methanol. The algae extracts were tested?in vitro?for antifungal activity against?Aspergillus flavus,?Aspergillus fumigatus, Aspergillus nigerand the yeast?Candida albicans, by using agar-well diffusion method. The crude extracts of the tested algae revealed differences in their bioactivities. The maximum growth inhibition for fungi was recorded in ethyl acetate extract of?T. triquetra?againstC. albicans?(30 mm),?methanol extract of?E. prolifera?(29 mm) and ethyl acetate extract of?Padina pavonica?(28 mm)?against?A. fumigatus.?The results clarified that Chlorophyta and Phaeophyta exhibited the highest biological activity against the tested fungi, whereas the lowest was achieved in Rhodophyta. The minimal inhibitory concentrations (MICs) of the crude extracts of the tested algae ranged from 0.5 to 3.0mg/ml. The results confirmed the potential of seaweed extracts as a natural source of antimicrobial compounds. The antifungal activity of different extracts of marine algae which belongs to Chlorophyta, Phaeophyta and Rhodophyta were examined againstA. flavus,?A. fumigatus, A. niger?and the yeast?C. albicans. The algae belonging to Chlorophyta and Phaeophyta exhibited the highest inhibitory effect against the test pathogenic fungi. The different extracts showed different activities against fungi. The antimicrobial activity depended on both algal species and the efficiency of solvents in the extraction of bioactive substances.
机译：在这项研究中，主要的海藻是在2009年夏季和秋季从吉达红海以南Al-Kumrah沿海地区的三个不同地点收集的。不同的海藻分别属于Chlorophyta（Enteromorpha prolifera？and？）。 Ulva reticulata），Phaeophyta（Cystoseira myrica，Padina pavonica，Sargassum portieriatum和Turbinaria triquetra）和Rhodophyta（Gracilaria multipartita）。通过使用石油醚，乙醚，乙酸乙酯和甲醇相继进行藻类萃取。通过琼脂孔扩散法，体外测试了藻类提取物对黄曲霉，烟曲霉，黑曲霉和酵母白色念珠菌的抗真菌活性。被测藻类的粗提物显示出其生物活性的差异。在ΔT的乙酸乙酯提取物中记录了对真菌的最大生长抑制。 triquetra？白色念珠菌（30毫米），? E的甲醇提取物。蔓生的Padina pavonica（29毫米）的乙酸乙酯（29毫米）和乙酸乙酯提取物。结果表明，绿藻和生藻对被测真菌表现出最高的生物活性，而在红藻中则表现出最低的活性。被测藻类粗提物的最低抑菌浓度（MIC）为0.5至3.0mg / ml。结果证实了海藻提取物作为天然抗微生物化合物来源的潜力。检查了属于藻类，藻类和红藻类的海藻不同提取物的抗真菌活性。黄褐色？烟，黑曲霉和酵母C.白色的。属于绿藻和藻类的藻类对测试病原真菌表现出最高的抑制作用。不同的提取物表现出不同的抗真菌活性。抗菌活性取决于藻类和溶剂在提取生物活性物质中的效率。

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