اثر دما بر فعالیت آنتی‌اکسیدانی، فنل کل و صفات زراعی دو گونه آویشن

نویسندگان

دانشگاه آزاد اسلامی واحد اهواز

چکیده
گیاه آویشن یکی از پرمصرف‌ترین گیاهان دارویی از نظر اسانس و متابولیت‌های ثانویه شناخته شده است. به منظور بررسی اثر دما بر فعالیت آنتی‌اکسیدانی، فنل کل، صفات زراعی و بازده اسانس دو گونه آویشن (کرمانی و باغی) آزمایشی در سال 94 در قالب طرح اسپیلت پلات بر پایه طرح کاملاً تصادفی در سه تکرار در گلخانه انجام شد. نتایج این آزمایش نشان داد که بین دو گونه و دماهای مختلف از نظر صفات اندازه ­گیری­شده اختلاف معنی‌داری وجود دارد. درصد اسانس، فعالیت آنتی‌اکسیدانی، فنل کل و ارتفاع بوته در آویشن کرمانی بیشتر از آویشن باغی بود. مقایسة میانگین اثر متقابل برای صفت درصد اسانس نشان داد که مقدار این صفت در آویشن کرمانی و دمای 30 درجة سانتی‌گراد بیشتر از تیمارهای دیگر است. میــزان IC50 آویشـن باغی و کرمانی در موقعیت­های مختلف از 37/24 تا 43/54 میکروگرم در میلی‌لیتر و مـیزان تـرکیبات فنـلی از 63/36 تا 37/89 میلی­گرم گالیک‌اسید در یک گرم عصارة خشک متغیر بودند. نتایج نشان داد که بیشترین فعالیت آنتی‌اکسیدانی، بازده اسانس و ترکیبات فنلی در دمای 30 درجه برای هر دو گونه مشاهده شد.

کلیدواژه‌ها


عنوان مقاله English

The effects of temperature on antioxidant activity, total phenolics and agronomic traits of two thyme species

نویسندگان English

Mehdi Rahimi
Mehdi Ramezani
Islamic Azad University, Ahvaz
چکیده English

Thyme plants are considered to be one of the most widely consumed herbs well-known for their essential oils and secondary metabolites. In order to evaluate the effects of temperature on antioxidant activity, total phenolics, agronomic traits and essential oil of two thyme species (i.e. Thymus vulgaris and Thymus caramanicus), a greenhouse experiment was conducted in 2015 with split plot in a completely randomized design with three replications. The results of this experiment showed significant differences between the two species and different temperatures in terms of the tr-aits measured. The essential oil percentage, antioxidant activity, total phenolics and plant height of Thymus carama-nicus proved to be more than those in Thymus vulgaris. The comparison of mean interaction effect for essential oil pe-rcentage showed that the value of this trait in Thymus caramanicus specimens treated with a temperature of 30°C was more than other treatments. The IC50 rates of Thymus vulgaris and Thymus caramanicus ranged from 24.37 to 54.43 µg/ml in different conditions and total phenolics ranged from 36.63 to 89.37 mg GAEg-1. In addition, the highest anti-oxidant activity, essential oil percentage and phenolic compounds were observed at a temperature of 30°C for both species.

کلیدواژه‌ها English

Thymus vulgaris L
Thymus caramanicus Jalas
essential oil percentage
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  • تاریخ دریافت 18 خرداد 1405
  • تاریخ انتشار 18 خرداد 1405