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首页> 美国卫生研究院文献>Biomolecules >Biosurfactants from Trichoderma Filamentous Fungi—A Preliminary Study
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Biosurfactants from Trichoderma Filamentous Fungi—A Preliminary Study

机译：来自Trichoderma丝状真菌的生物活性剂-A初步研究

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摘要

Biosurfactants represent a structurally diverse group of secondary metabolites produced by bacteria, yeasts, and filamentous fungi. Their character is often associated with numerous additional properties. The observation of Trichoderma fungi of various species used as a source of bioinhibitors against pathogenic plants fungi focuses attention to the often quite specific behavior of preparations in contact with, among others, plant leaves, dependent on strain. Thus, an evaluation of the selected strains belonging to the species: T. atroviride, T. citrinoviride,T. reesei and T. harzianum was conducted towards their capability of the extracellular secretion of surfactants, with a simultaneous attempt to pre-determine their chemical nature. Two mineral-organic media were used for this purpose, and the culture fluid was extensively tested using a variety of methods. A decrease in surface tension was observed in culture fluid of each tested strain, especially T. citrinoviride HL and C1. The results strongly depended on medium composition, of which Saunders 1 and MGP 1 were most beneficial. The secreted compounds were further analyzed to pre-determine their chemical nature using IR, GC, and NMR. In the case of most efficient biosurfactant producers, a lipopeptide structure of the surfactants was concluded.
机译：生物表面活性剂代表由细菌，酵母和丝状真菌产生的结构各种次生的次生代谢物。他们的角色通常与众多附加属性相关联。用作生物抑制植物来源的各种物种的Trichoderma真菌的观察对抗病原体植物的源Fungi致力于与其他植物叶子接触的制剂的通常特定行为，依赖于菌株。因此，评估属于物种的所选菌株：T.Atroviridide，T.柠檬腈，T.Reesei和T. harzianum是为了预先确定其化学性的同时试图进行表面活性剂的细胞外分泌能力。用于此目的，使用两种矿物质介质，并使用各种方法广泛地测试培养物。在每个测试菌株的培养液中观察到表面张力的降低，尤其是T. Citrinoviride H1和C1。强烈依赖于培养基1和MGP 1的结果最有益的结果。进一步分析分泌的化合物以使用IR，GC和NMR预先确定其化学性质。在最有效的生物活性剂生产者的情况下，结束了表面活性剂的脂肽结构。

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