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Journal of Medicinal Plants and By-products، جلد ۴، شماره ۱، صفحات ۷۷-۸۲
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عنوان انگلیسی Total Flavonoids Contents and Anti Bacterial Activity of the Extracts of two Labiateae Species: Nepeta menthoides and Thymus trautvetteri
چکیده انگلیسی مقاله Total flavonoids contents and antibacterial activity of the extracts from the aerial parts of two Labiateae species, Nepeta menthoides Boiss. & Buhse and Thymus trautvetteri Klokov & Desj.-Shost. were determined. Quantitative determination of flavonoid contents was calculated in terms of quercetin equivalent in various extracts (50% methanol, chloroform and distilled water) by AlCl3 colorimetric method. It was found that total flavonoids contents of N. menthoides extracts in different solvents were (2.308%, 0.884% and 0.710%) mg/g and (2.076%, 1.468% and 1.412%) mg/g for T. trautvetteri respectively.Antibacterial activity of the extracts was also determined against 6 gr (+/-) bacteria by disc diffusion method. The results showed that 50% methanol extracts of two species displayed better inhibitor activity against the tested bacteria. The bacteria Stapylococcus epidermidis, Staphylococcus saprophyticus and Staphylococcus aureus were sensitive against 50% methanol extract of N. menthoides even more than the standard antibiotics (10μg). Therefore a good correlation between total flavonoids contents and antibacterial activity of the studied extracts is demonstrated.
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نشانی اینترنتی http://jmpb.areeo.ac.ir/article_108894_1c991a90d40e3c771cb9127817bbf252.pdf
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