تاثیر تیمار ملاتونین بر عمر پس از برداشت میوه گوجه‌فرنگی (Solanum lycopersicum L.) از طریق تغییر در محتوای ترکیبات آنتی‌اکسیدانی

فیزیولوژی محیطی گیاهی

دوره 18، شماره 71، مهر 1402، صفحه 63-74   

نوع مقاله: پژوهشی

شناسه دیجیتال (DOI): 10.30495/iper.2022.1957624.1792

نویسنده

پرویز ملک زاده^*

گروه زیست‌شناسی، دانشکده علوم پایه، دانشگاه قم، قم، ایران،

چکیده

هدف از این پژوهش بررسی اثر تیمار ملاتونین بر فعالیت آنزیم­ها و ترکیبات موثر در ماندگاری میوه گوجه­فرنگی در طی انبارمانی می­باشد. ملاتونین در جنبه­های مختلف رشد ونمو سلول نقش داشته و اخیراً مشخص شده که در حفاظت سلول در برابر تنش­های زنده و غیرزنده نقش دارد. در این پژوهش میوه­گوجه­فرنگی با 100 میکرومولار بر لیتر ملاتونین به عنوان تیمار و آب مقطر به عنوان شاهد به مدت 15 دقیقه غوطه­ور شد، سپس به مدت 4 هفته در دمای 1±4 درجه سانتی­گراد نگه­داری شد. نتایج بدست آمده نشان داد که تیمار ملاتونین از طریق افزایش فعالیت آنزیم­های سوپراکسید­دیسموتاز و کاتالاز توانست محتوای رادیکال­های آزاد سوپراکسید و پراکسید ­هیدروژن را کاهش دهد و از این طریق محتوای فلاونوئیدها، فنول کل، ویتامین ث و گلوکوزینولات را در حد بالایی حفظ کند. این نتایج نشان داد که تیمار ملاتونین می­تواند از طریق افزایش محتوای ترکیبات حفاظتی سلول و همچنین از طریق تاثیر روی فعالیت آنزیم­های آنتی‌اکسیدان برای افزایش عمر پس از برداشت میوه گوجه­فرنگی موثر باشد.­­

کلیدواژه‌ها

آنتی اکسیدان؛ گلوکوزینولات؛ گوجه فرنگی؛ ملاتونین؛ ویتامین‌ث

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