بررسی کیفیت روغن‌های نباتی موجود در بازار مصرف ایران توسط ارزیابی مقایسه‌ای‌ پارامترهای اکسایشی و پروفایل اسیدهای چرب

نویسندگان
1 دانشگاه علوم پزشکی سمنان
2 گروه علوم و صنایع غذایی دانشگاه آزاد اسلامی واحد دامغان، دامغان، ایران
3 مرکز تحقیقات سلامت غذایی (نمک)، دانشگاه علوم پزشکی سمنان، سمنان، ایران.
چکیده
روغن یکی از مواد لازم برای آشپزی و پخت و پز در سراسر جهان است. با پیشرفت صنایع غذایی، هر روز روغن‏های بهتر و مفیدی برای مصرف کنندگان عرضه می‏شود که هر یک خواص خود را دارد. در این پژوهش، به منظور بررسی کیفیت روغن‏های سویا، سرخ کردنی و زیتون بوگیری شده موجود در بازار مصرف ایران، پارامترهای فیزیکوشیمیایی از قبیل اندیس پراکسید، اسیدیته، اندیس یدی، اندیس صابونی، همچنین پروفایل اسیدهای چرب و پایداری اکسایشی آن‏ها تعیین شد و سپس با یکدیگر مقایسه گردید. کلیه پارامترهای فیزیکوشیمیایی مورد بررسی در این پژوهش، به جز اندیس پراکسید در روغن زیتون با استاندارد مطابقت داشت. اندیس پراکسید در روغن زیتون (meqo2/Kg 61/9) حاکی از نامناسب بودن روغن زیتون جهت سرخ کردن بود. اندیس پراکسید در روغن سویا و در روغن سرخ کردنی meqo2/Kg 97/0 گزارش شد. پروفایل اسیدهای چرب نشان داد که اسید چرب غالب در روغن زیتون، اسید اولئیک بوده، در حالی که در روغن سرخ کردنی به طور قابل توجهی اسیدهای پالمیتیک، اولئیک و لینولئیک وجود دارند. همچنین اسید لینولئیک در روغن سویا به عنوان اسید چرب غالب تعیین شد. پایداری اکسایشی نمونه‏های روغن بر حسب روش رنسیمت در روغن‏های سرخ کردنی و سویا بالاتر از روغن زیتون بود (05/0P˂).
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Investigating the quality of vegetable oils in the Iranian consumer market by comparative evaluation of oxidative parameters and fatty acid profiles

نویسندگان English

Fatemeh mirhaj 1
Homa Baghaei 2
Ahmad Heydarieh 3
sepideh ashhad 1
1 Semnan University of medical Science, Semnan, Iran.
2 Assistant Professor of Food Science and technology, Islamic Azad University, Damghan Branch, Damghan, Iran.
3 Assistant Professor of Food Science and technology, Islamic Azad University, Damghan Branch,
چکیده English

Oil has been one of the necessary ingredients for cooking around the world. As food industry proceed, better and more useful oils with their own characteristics are being offered to consumers every day. In the current research, in order to investigate the quality of soybean, frying and deodorized olive oils available in the Iranian consumer market, physicochemical parameters such as peroxide index, acidity, iodine index, saponification index, as well as their fatty acids profile and oxidative stability were determined and then compared. All physicochemical parameters except olive oil peroxide index were consistent with the standards. The peroxide index in olive oil (9.61 meqo2/Kg) indicated that olive oil was inappropriate for frying. 0.97 meqo2/Kg peroxide value was reported in soybean and frying oils. The fatty acids profile showed that oleic acid was the predominant fatty acid in olive oil, while in frying oil palmitic, oleic, and linoleic acids were significant. Also, linoleic acid in soybean oil as the predominant fatty acid was determined. The oxidative stability of frying and soybean oils, according to the Rancimat method, was higher than that of olive oil (P˂0.05).

کلیدواژه‌ها English

Fatty acid
frying
Oil
Olive
soybean
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