بررسی برخی ترکیب‌های ضداکسایشی و فعالیت ضداکسایشی کل در هشت رقم توت‌فرنگی (Fragaria x ananassa Duch.)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار، گروه علوم باغبانی، دانشکدۀ کشاورزی، دانشگاه کردستان

2 دانشجوی سابق کارشناسی ارشد، گروه علوم باغبانی، دانشکدۀ کشاورزی، دانشگاه کردستان

چکیده

توت‌فرنگی (Fragaria ananassa Duch.) منبع خوبی از ترکیب‌های ضداکسایشی طبیعی است. در این بررسی میوه‌های هشت رقم توت‌فرنگی شامل کردستان، مرک، کاماروسا، پاروس، کویین‌الیزا، ونتانا، سلوا و پاجرو در مرحلۀ رسیدگی برداشت شدند و برای تجزیه و تحلیل محتوای فنل کل، آنتوسیانین کل، ویتامین ث، مواد جامد محلول (TSS) و فعالیت ضداکسایشی کل تجزیه و تحلیل شدند. نتایج نشان داد که بالاترین میزان TSS در رقم‌های کردستان، کاماروسا، مرک و ونتانا مشاهده شد. رقم‌های پاجرو، کویین‌الیزا و پاروس پایین‌ترین محتوای فنل کل را دارند. میزان آنتوسیانین کل و ویتامین ث در رقم‌های کردستان، مرک و کاماروسا در بالاترین میزان بود. از بین رقم‌های بررسی‌شده، رقم مرک بالاترین میزان اسیدیتۀ قابل عیارسنجی (تیتراسیون) را داشت، درحالی‌که رقم کویین‌الیزا پایین‌ترین فعالیت ضداکسایشی کل را نشان داد. همبستگی مثبت بین محتوای فنل کل (41/0)، محتوای آنتوسیانین‌ها (42/0)، ویتامین ث (53/0) و اسیدیتۀ قابل تیتراسیون (53/0) با فعالیت ضداکسایشی کل وجود داشت. به‌طور‌کلی رقم‌های کردستان، مرک و کاماروسا منابع مهمی برای ترکیب‌های ضداکسایشی هستند.

کلیدواژه‌ها


عنوان مقاله [English]

Study of some antioxidant compounds and total antioxidant activity in eight strawberry (Fragaria x ananassa Duch.) cultivars

نویسندگان [English]

  • Taimoor Javadi 1
  • Farinaz Rahmati 2
  • Naser Ghaderi 1
1 Assistant Professor, Faculty of Agriculture, University of Kurdistan, Iran
2 Former M.Sc. Student, Faculty of Agriculture, University of Kurdistan, Iran
چکیده [English]

Strawberry (Fragaria ananassa Duch.) is a good source of natural antioxidants. Fruits from eight Strawberry (Fragaria ananassa Duch.) cultivars (‘Kurdistan’, ‘Merck’, ‘Camarosa’, ‘Paros’, ‘Queen Elisa’, ‘Ventana’, ‘Selva’ and ‘Pajaro’) were harvested at ripen stage and analyzed for total phenolic content, total anthocyanin content, vitamin c, total soluble solid and total antioxidant activity. The results showed that the highest TSS was found in Kurdistan, Camarosa, Merek and Ventana cultivars. The cultivars of ‘Pajaro’, ‘Queen Elisa’ and ‘Paros’ had the lowest total phenolic contents. Total Anthocyanin and vitamin C content were highest in ‘Kurdistan’, ‘Merek’ and ‘Camarosa’. Among the investigated strawberry fruits the cultivar of ‘Merek’ showed the highest amount of total titratable acidity,  while regarding to total antioxidant activity ‘Queen Elisa’ showed lower total antioxidant activity. There were significantly positive correlation between traits of total phenolic content (0.41), total anthocyanin content (0.42), vitamin C (0.53) total titratable acidity (0.53) and total antioxidant activity. Generally, ‘Kurdistan’, ‘Merek’ and ‘Camarosa’ were good source of antioxidant compounds.

کلیدواژه‌ها [English]

  • Antioxidants
  • strawberry
  • total phenol
  • total anthocyanin
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