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首页> 外文期刊>Advancements in Life Sciences >Evaluation of antimicrobial activity of a lichen used as a spice ( Platismatia glauca )
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Evaluation of antimicrobial activity of a lichen used as a spice ( Platismatia glauca )

机译：用作香料的地衣的抗菌活性评价（glatis glauca）

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Background: Lichen is a complex symbiotic relationship arose from algae or cyanobacteria that live together with some fungal species. Some of them are edible and consumed as spice such as Platismatia glauca . The current study aimed to evaluate it’s the antimicrobial properties of the methanolic extract of lichen thalli of P. glauca against some referenced bacterial and yeast strains. Methods: Disc diffusion test, minimum inhibitory (MIC) and minimum bactericidal (MBC) or minimum fungicidal (MFC) tests were carried out to evaluate the antimicrobial activity of lichen. Results: All tested microorganisms exhibited varying degrees of susceptibility. Among the tested strains, the most susceptible bacterium -using the disc diffusion assay- was Staphylococcus saprophyticus (18.5±1.0 mm), followed by Staphylococcus aureus (14.5±0.5 mm), Shigella flexneri (12.5±1.5 mm), Streptococcus pneumoniae (12.0±1.0 mm), Proteus vulgaris (11.5±0.5 mm), Salmonella Typhimurium (11.5±0.5 mm), B acillus cereus (11.0±1.0 mm) and Escherichia coli (11.0±0.0 mm), respectively. It also showed high antifungal activity against Candida albicans (22.5±0.5 mm). The MIC, MBC and MFC were promising, which were as low as 3.125 to 12.5 mg/ml for MIC and 6.25 to 12.5 mg/ml for MBC and MFC. Conclusion: From the obtained results, it is concluded that the lichen thalli of Platismatia glauca possesses a remarkable antimicrobial activity and it may be considered as a source of potential antimicrobial agents.
机译：背景：地衣是藻类或蓝细菌与某些真菌物种共同生活的一种复杂的共生关系。其中一些可以食用，也可以作为调味品食用，例如platismatia glauca。目前的研究旨在评估其对部分参照细菌和酵母菌株的抗性。方法：进行椎间盘扩散试验，最小抑菌（MIC）和最小杀菌（MBC）或最小杀菌（MFC）试验，以评估地衣的抗菌活性。结果：所有测试的微生物均表现出不同程度的敏感性。在测试的菌株中，使用圆盘扩散测定法最敏感的细菌是腐生葡萄球菌（18.5±1.0 mm），其次是金黄色葡萄球菌（14.5±0.5 mm），弗氏志贺氏菌（12.5±1.5 mm），肺炎链球菌（12.0） ±1.0毫米），变形杆菌（11.5±0.5毫米），鼠伤寒沙门氏菌（11.5±0.5毫米），蜡状芽孢杆菌（11.0±1.0毫米）和大肠杆菌（11.0±0.0毫米）。它还显示出对白色念珠菌的高抗真菌活性（22.5±0.5 mm）。 MIC，MBC和MFC前景看好，MIC最低至3.125至12.5 mg / ml，MBC和MFC低至6.25至12.5 mg / ml。结论：从获得的结果可以得出结论，青枯病的地衣藻具有显着的抗菌活性，可以被认为是潜在的抗菌剂来源。

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