بررسی اثر آنتی‌اکسیدانی عصاره اتانولی ژل آلوئه‌ورا بر پایداری روغن سویا

نوع مقاله : مقاله پژوهشی

نویسندگان

• مرجان کرمی
• لیلا ناطقی
• سیمین اسداللهی

گروه علوم و صنایع غذایی، واحد ورامین– پیشوا، دانشگاه آزاد اسلامی، ورامین، ایران

https://doi.org/10.22067/ifstrj.2022.77602.1189

چکیده

اکسیداسیون چربی­ها از مهم­ترین دلیل فساد مواد غذایی به شمار می­آید. سرعت واکنش اکسیداسیون را می‌توان با اضافه کردن آنتی‌اکسیدان­ها به تأخیر انداخت. در این مطالعه اثر آنتی‌اکسیدانی عصاره‌ اتانولی آلوئه‌ورا بر پایداری روغن سویا مورد مطالعه قرار گرفت. ترکیبات موجود در عصاره آلوئه ورا با استفاده از GC/MS شناسایی شدند. بررسی خاصیت آنتی‌اکسیدانی با اندازه‌گیری مقدار ترکیلات فنلی و فلاونوئیدی عصاره اتانولی و آزمون رادیکال‌کنندگی DPPH صورت گرفت و در ادامه عصاره آلوئه‌ورا در چهار سطح ( ppm500،1000،1500،2000) و آنتی‌اکسیدان سنتزیBHA ، در سطح 120ppm  به روغن سویا اضافه و عدد پراکسید، اسیدیته، تیوباربیتوریک اسید و پایداری اکسایشی به روش رنسیمت اندازه‌گیری شد. نتایج نشان داد با افزایش غلظت عصاره­های آلوئه­ورا از 500 تا 2000 ppm، فساد اکسیداتیو با روند کندتری طی 90 روز نگهداری در روغن سویا مشاهده گردید. پس از 90 روز نگهداری، میزان عدد پراکسید، تیوباربیتوریک اسید و اسیدیته نمونه روغن سویا حاوی ppm 2000 عصاره اتانولی ژل آلوئه­ورا از نمونه شاهد که حاوی  ppm BHA120 بود کمتر بود. میزان فنل کل و مهار رادیکال آزاد و پایداری به فساد اکسیداتیو به روش رنسیمت در نمونه روغن سویا حاوی ppm 2000 عصاره اتانولی ژل آلوئه­ورا از نمونه روغن سویا که حاوی ppm BHA120 بود بالاتر بود. با توجه به اینکه نمونه روغن سویای حاوی ppm 2000 عصاره اتانولی ژل آلوئه­ورا میزان فنل کل و مهار رادیکال آزاد و خصوصیات آنتی­اکسیدانی بیشتری نسبت به نمونه شاهد داشت بنابراین نمونه مذکور از نظر خواص کیفی و سلامت بخشی به عنوان تیمار برتر انتخاب گردید.

کلیدواژه‌ها

• اثر آنتی‌اکسیدانی
• روغن سویا
• ژل آلوئه‌ورا
• عصاره اتانولی

موضوعات

• فناوری مواد غذایی

©2023 The author(s). This is an open access article distributed under Creative Commons Attribution 4.0 International License (CC BY 4.0), which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source.

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