مطالعه خصوصیات فیزیکی، ترکیبات فنولی و فعالیت آنتی اکسیدانی پوست میوه 30 رقم مختلف انار ایران

نوع مقاله : مقالات پژوهشی

نویسندگان

• علی تهرانی فر ¹
• مهدی زارعی ²
• بهنام اسفندیاری ²
• زهرا نعمتی ²

¹ گروه علوم باغبانی، دانشگاه فردوسی مشهد

² دانشگاه فردوسی مشهد

https://doi.org/10.22067/jhorts4.v0i0.42779

چکیده

انار (Punica granatum L.) یکی از مهم‌ترین میوه های بومی ایران می باشد، که رقم های زیادی از آن کشت و کار می شود. میوه ها به طور گسترده به صورت تازه و فرآوری شده از جمله آب میوه، مربا و غیره مصرف می شوند. پوست میوه انار به عنوان یک فرآورده جانبی صنعت آب میوه-گیری، منبع غنی از ترکیبات زیست فعال محسوب می‌شود. این پژوهش به منظور بررسی و مقایسه خصوصیات فیزیکی، فنول کل، تانن کل و فعالیت آنتی اکسیدانی پوست میوه 30 رقم مختلف انار، در قالب طرح کاملاً تصادفی با 4 تکرار انجام شد. نتایج این پژوهش نشان داد که، بین ارقام مختلف در همه فاکتورهای اندازه گیری شده اختلاف معنی داری وجود دارد. وزن میوه، درصد پوست و ضخامت پوست به ترتیب از 89/196 تا 87/135 گرم، 82/59 تا 61/63 درصد و 13/3 تا 25/5 میلی متر متغیر بودند. نتایج هم‌چنین نشان داد که، میزان فنول کل از 35/320 تا 52/325 میلی گرم در 1 گرم ماده خشک متغیر می‌باشد. میزان تانن کل در بین ارقام انار از 35/189 تا 35/197 میلی گرم در 1 ماده خشک مشاهده شد. فعالیت آنتی اکسیدانی پوست انار به روش DPPH اندازه گیری شده، که میزان آن بین 60/69 تا 60/93 درصد متغیر بود. علاوه بر این، همبستگی مثبتی بین فعالیت آنتی اکسیدانی با میزان فنول کل (923/0=r) و تانن کل (816/0=r) وجود داشت. نتایج نشان داده که، رقم مهم‌ترین فاکتور جهت تعیین خصوصیات فیزیکی، ترکیبات فنولی و فعالیت آنتی اکسیدانی در انار می باشد. مقادیر بالای ترکیبات فنولی موجود در پوست انار پتانسیل خوبی را به عنوان یک مکمل غنی از آنتی‌اکسیدان‌های طبیعی فراهم آورده است.

کلیدواژه‌ها

• انار
• فنول
• تانن
• فعالیت آنتی اکسیدانی

20.1001.1.20084730.1393.28.3.5.0

عنوان مقاله [English]

Study of Physical Properties, Phenolics Compounds and Antioxidant Activity of Thirty Different Iranian Cultivars of Pomegranates Peels

نویسندگان [English]

• Ali Tehranifar ¹
• Mehdi Zarei ²
• Behnam Esfandiyari ²
• Zahra Nemati ²

¹

² University of Mashhad

چکیده [English]

Pomegranate (punica granatum L.) is an important Iranian-native fruit, whose many varieties are cultivated. Fruits are widely consumed fresh and in processed forms as juice, jams and etc. Pomegranate peel, as a by-product of the commercial juice industry, is a rich source of bioactive compounds. This research has been done to evaluate and compare physical characteristics, total phenolics, total tannins and antioxidant activity of thirty different cultivars of pomegranates peels in a Completely Randomized Design with 4 replications. This study showed that there were significant differences among the cultivars in all measured factors. The fruit weight, peel percentage and peel thickness were within the range of 196.89-135.87 g, 59.82-63.61% and 3.13-5.25 mm, respectively. The results also showed that the values of total phenolics ranged from 320.35 mg g-1 dry matter to 328.52 mg g-1 dry matter. The total tannins content was observed in pomegranate cultivars between 189.35 mg g-1 dry matter and 197.35 mg g-1 dry matter. The antioxidant activity of pomegranate peel, as determined by the DPPH assays, was between 69.60 and 93.60%. In addition, the antioxidant activity was positively correlated with the total phenolics (r = 0.923) and total tannins (r = 0.816). These results demonstrated that the cultivar is the main parameter which determined the physical properties, phenolics compounds and antioxidant activity in the peel of pomegranate. The large amount of phenolics compounds in pomegranate peels provided a good potential as a supplement rich in natural antioxidants.

کلیدواژه‌ها [English]

• Pomegranate
• Phenolic
• Tannin
• Antioxidant activity

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