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首页> 外文期刊>African Journal of Biotechnology >Antimycotoxigenic and antifungal activities of Citrullus colocynthis seeds against Aspergillus flavus and Aspergillus ochraceus contaminating wheat stored
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Antimycotoxigenic and antifungal activities of Citrullus colocynthis seeds against Aspergillus flavus and Aspergillus ochraceus contaminating wheat stored

机译：西葫芦种子对黄曲霉和曲霉污染小麦的抗霉菌和抗真菌活性

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Plant extracts and their constituents have a long history as antifungal agents, but their use in biotechnology as preservatives, due to the increasing resistance of fungi to fungicides, has been rarely reported. The aim of this study was to assess in vitro antifungal and antimycotoxigenic power of methanolic and aqueous extracts of Citrullus colocynthis seeds, an aromatic and medicinal plant, of Algerian flora, against two toxigenic species of the genera Aspergillus responsible of contamination of wheat stored. The antifungal and antimycotoxigenic activity of methanolic and aqueous extracts were screened against Aspergillus ochraceus and Aspergillus flavus. Dillution method was used to investigate the antimicrobial and antimycotoxigenic activity. These bioassays are preceded by a phytochemical screening. The phytochemical analysis of seeds extracts revealed the presence of some chemical groups (polyphenols, steroids and alkaloids) which can express the desired activities. The results suggest that the extracts showed a very good antifungal activity against A. ochraceus, but for A. flavus any antifungal activity was recorded. The extracts have good antiochratoxigenic power in liquid medium. This evaluation confirms that the extracts of C. colocynthis seeds used at low concentration may have significant potential for biological control of fungi and theirs toxins.
机译：植物提取物及其成分作为抗真菌剂已有很长的历史，但是由于真菌对杀真菌剂的抗性增强，因此在生物技术中用作防腐剂的报道很少。这项研究的目的是评估阿尔及利亚植物香瓜（Citrullus colocynthis）种子（一种芳香和药用植物）的甲醇提取物和含水提取物对曲霉属的两种产毒物种的体外抗真菌和抗真菌毒素作用，所述曲霉属有两个小麦种造成储存的小麦污染。筛选了甲醇提取物和水提取物对f曲霉和黄曲霉的抗真菌和抗霉菌活性。稀释法用于研究其抗微生物和抗霉菌毒素活性。在进行这些生物测定之前，需要进行植物化学筛选。种子提取物的植物化学分析表明存在一些化学基团（多酚，类固醇和生物碱），它们可以表达所需的活性。结果表明，提取物对against曲霉具有很好的抗真菌活性，但对于黄曲霉，未记录到任何抗真菌活性。提取物在液体培养基中具有良好的抗排毒作用。该评价证实，低浓度使用的芋C种子提取物可能具有重要的潜力，可用于生物防治真菌及其毒素。

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