کنگره بین المللی زیست فناوری گیاهان دارویی و قارچ های کوهی

صفحه اصلی / سومین کنگره بین المللی و چهارمین همایش ملی زیست فناوری گیاهان دارویی و قارچ های کوهی

Evaluation of antioxidant and antimicrobial activities of Echium italicum L. extracts, (leaf, flower, stem and seed)

نویسندگان :

Zahra Dashtizadeh¹ Abdoarrasoul Haghir Ebrahimabadi² Azam Monfared³ Ahmad Mirshokraei⁴ Samaneh Heydari⁵

1- دانشگاه پیام نور مرکز مشهد 2- موسسه تحقیقات اسانس دانشگاه کاشان 3- دانشگاه پیام نور شرق تهران 4- دانشگاه پیام نور شرق تهران 5- دانشگاه محقق اردبیلی

کلمات کلیدی :

Echium italicum L., Boriginaceae, Extract, Antioxidant activity, DPPH assay, Folin-Ciocalteu test, Beta-carotene test, Antimicrobial activity, Disk diffusion method, Micro-broth dilution

چکیده :

In antioxidant activities, by DPPH test, IC50 values 63.11±1.45, 102.81±1.08, 201.24±2.18 and 131.62±0.46 μg/ml were obtained for leaf, flower, stem and seed extract respectively, comparable to that of BHT (IC50 = 19.72± 0.80 μg/ml). In beta-carotene-linolenic acid test, inhibition percentages of %57.22, %48.74, %48.48 and %44.85 were recorded for leaf, flower, stem and seed extracts, respectively, comparable to that of BHT (%89.43). In total phenolic compounds contents of the extracts equivalent to galic acid were evaluated 68.82, 30.25, 16.76 and 27.86 µg/mg for leaf, flower, stem and seed extracts,respectively.In antimicrobial activity by disk diffusion method, leaf extract, inhibited paratyphoid microbe with a 12 mm corona by at least 60.25µg/ml dilution, stem extract inhibited pneumonia microbe by 18 mm corona at least 500µg/ml dilution and flower extract inhibited two before microbes with a 12 and 13mm coronas by at least 500 and 250µg/ml dilutions respectively.