In vitro growth inhibition of Aspergillus flavus, the major producer of aflatoxin, using garden thyme (Thymus vulgaris L.) essential oil
محل انتشار: اولین همایش گیاهان دارویی و داروهای گیاهی
سال انتشار: 1394
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 568
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شناسه ملی سند علمی:
HHMM01_149
تاریخ نمایه سازی: 30 بهمن 1394
چکیده مقاله:
In this study the effect of garden time (Thymus vulgaris) essential oil on the growth of Aspergillus flavus, the major producer of aflatoxin, was evaluated in vitro. The assessment was done by conducting an experimental completely randomized design comprising of six treatments and four replications. The treatments were four concentrations of garden time essential oil (0.2, 0.6, 1 and 1.4 mg/ml) and two controls (Dimethyl sulfoxide and fungicide solutions). Each treatment was applied to the fungus by placing a paper disc, impregnated with each treatment, in the center of a plate of PDA medium inoculated with spore suspension of the fungus. Measuring the average radius of A. flavus growth inhibition zone around the impregnated paper discs indicated that compared to the negative control, all concentrations of garden time essential oil significantly inhibited the mycelial growth of the fungus. The highest radial growth inhibition zone (20.5 mm, 18 mm and 10.7 mm) were those of 1.4 mg/ml, 1 mg/ml and 0.6 mg/ml of garden thyme essentials, respectively which were significantly higher than that of the fungicide treatment. Moreover, the rate of growth inhibition was concentration dependent Considering these results it seems that garden time essential oil is potentially a natural alternative for controlling A. flavus mold.
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نویسندگان
Jafar Nikan
Plant Protection Research Dept., Agricultural and Natural Resources Research Centre of Hamadan,
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