بررسی برهم کنش زمان برداشت و دوره انبارداری بر شاخص‌های فیزیولوژیک و بیوشیمیایی میوه کیوی (Actinidia deliciosa)

نوع مقاله: پژوهشی

نویسندگان

1 گروه زیست شناسی، دانشکده علوم پایه، دانشگاه آزاد واحد تنکابن، تنکابن، ایران

2 پژوهشکده مرکبات و میوه‌های نیمه‌گرمسیری، سازمان تحقیقات، آموزش و ترویج کشاورزی، رامسر، ایران

چکیده

زمان مناسب برداشت نقش مهمی در حفظ کیفیت میوه در شرایط انبارداری دارد. برداشت زودهنگام یا با تاخیر می­تواند منجر به طعم ناخوشایند، عدم نگه داری در انبار و شکل ظاهری نامتناسب شود. به این منظور آزمایشی با هدف بررسی زمان برداشت و دوره انبارداری بر شاخص­های فیزیولوژیک و بیوشیمیایی با 3 تکرار انجام شد. تیمارهای آزمایش شامل 4 زمان برداشت (بر اساس شاخص مواد جامد محلول) 5، 5/6، 8 و 5/9 درجه بریکس و 4 دوره انبارداری صفر، 30، 60 و 90 روز در نظر گرفته شد. بر مبنای تیمارهای آزمایشی صفاتی نظیر آب میوه، مواد جامد محلول (TSS)، اسیدیته قابل تیتراسیون (TA)، نسبت TSS/TA، محتوای نشاسته و پروتئین، رنگدانه­های میوه، ترکیبات فنلی، فعالیت آنتی­اکسیدانی، ویتامین ث، محتوای قند کل و قندهای احیاشونده در میوه اندازه­گیری شد. نتایج نشان داد که در تمامی تیمارهای برداشت، افزایش دوره انبارداری موجب افزایش معنی­دار TSS، TA، محتوای پروتئین، فنل کل، ویتامین ث، محتوای قند کل، قند احیاشونده و ظرفیت آنتی­اکسیدان شد. با افزایش شاخص برداشت و دوره انبارداری محتوای کلروفیل a، b، کلروفیل کل و کاروتنوئیدها افزایش معنی­داری داشت. نتایج این پژوهش نشان داد که دوره­های 60 و 90 روز انبارداری نقش مهمی در افزایش شاخص­های فیزیولوژیک و بیوشیمیایی میوه کیوی (به‌جز صفاتی نظیر آب میوه، محتوای نشاسته، نسبت TSS/TA و فعالیت آنزیم سوپراکسیددیسموتاز) در تمامی زمان­های برداشت دارد.

کلیدواژه‌ها


عنوان مقاله [English]

Interaction of harvest time and storage period on physiological and biochemical parameters of kiwi fruit (Actinidia deliciosa cv. Gold)

نویسندگان [English]

  • Mahmoud Asadi 1
  • somayeh Rohani 1
  • Javad Fatahi moghadam 2
  • Babak Babakhani 1
  • Parvaneh Rahdari 1
1 Department of Biology, Faculty of Science, Islamic Azad University, Tonekabon Branch, Tonekabon, Iran
2 Horticultural Science Research Institute, Citrus and Subtropical Fruits Research Center, Agricultural Research Education and Extension Organization (AREEO), Ramsar, Iran
چکیده [English]

Proper harvesting time plays an important role in maintaining fruit quality during storage. Early or delayed harvesting results in unpleasant taste, inability to store and inappropriate appearance. In order to evaluate the effects of harvest time and storage period on physiological and biochemical parameters was conducted with three replications. Tests were carried out with four harvesting time (Based on the total soluble solids (TSS) index), i.e., 5, 6.5, 8 and 9.5 °Brix and four storage time, i.e., 0, 30, 60 and 90 days. Based on the experimental treatments, traits such as fruit juice, TSS, TA, TSS/TA ratio, starch and protein content, fruit pigments, phenolic compounds, antioxidant activity, vitamin C, total sugar content and reducing sugars content in fruit were measured. The results showed that in all harvesting treatments, increasing the storage period significantly increased TSS, TA, protein content, total phenol, vitamin C, total sugar content, reducing sugar and antioxidant capacity. Chlorophyll a, b, total chlorophyll and carotenoid contents increased significantly with increasing harvest index and storage period. The results of this study showed that 60 and 90 days storage periods play an important role in increasing physiological and biochemical indices of kiwifruit (except traits such as fruit juice, starch content, TSS/TA ratio and superoxide dismutase activity) in all harvest treatments.

کلیدواژه‌ها [English]

  • Chlorophyll
  • storage period
  • Antioxidant capacity
  • Harvest time
  • Kiwi fruit
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