بررسی ویژگی‏های فیزیکوشیمیایی روغن زیتون فرابکر استحصال شده از رقم کرونائیکی استان گلستان طی انبارداری

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده علوم و مهندسی صنایع غذایی، واحد علوم داروئی، دانشگاه آزاد اسلامی، تهران. ایران

2 گروه غذایی و کشاورزی، پژوهشکده صنایع غذایی و کشاورزی، پژوهشگاه استاندارد، سازمان ملی استاندارد ایران، البرز، ایران

3 گروه علوم و مهندسی صنایع غذایی، دانشکده صنایع غذایی، واحد صفادشت، دانشگاه آزاد اسلامی، صفادشت،ایران

چکیده

تشخیص و تعیین خواص فیزیکوشیمیایی، ترکیبات موثره روغن زیتون و پایداری اکسایشی آن طی انبارداری از اهمیت خاصی برخوردار است، لذا در این پژوهش برخی از ویژگی‌های روغن‏ زیتون فرابکر حاصل از میوه زیتون رقم کرونائیکی طی دو سال انبارداری در دمای 4 درجه سلسیوس و در تاریکی بررسی شد. نتایج نشان داد که عدد اسیدیته، عدد پراکسید، عدد آنیزیدین و مقدار موم افزایش و میزان ترکیبات غیرقابل صابونی، استرول کل و فنول کل و نیز فعالیت آنتی‏اکسیدانی کاهش یافت. در تعداد کربن معادل تری‏آسیل‏گلیسرول‏‏ها تغییر حائز اهمیتی مشاهده نشد (05/0

کلیدواژه‌ها


عنوان مقاله [English]

Study of Physicochemical Properties of Extra Virgin Olive Oil Extracted from Koroneiki Variety in the Golestan Province durin Storage

نویسندگان [English]

  • Kasra Mommenian 1
  • Ladan Rashidi 2
  • Masoud Homapour 3
1 Department of Food Science and Technology, Branch of Pharmaceutical Sciences, Islamic Azad University, Tehran, Iran
2 Department of Food Science and Technology, Research Center of Food Technology and Agricultural Products, Research Standard Institute, National Iranian Standards Organization, Alborz, Iran
3 Faculty of Food Science, Department of Food Science and Technology, Branch of Safadasht, Islamic Azad University, Safadasht, Tehran, Iran
چکیده [English]

Detection and determination of physicochemical properties, effective compounds of olive oil as well as its oxidative stability during storage is of particular importance, therefore, in this study, some properties of extra virgin olive oil obtained from the olive fruit of Kronaikei cultivar during two years of storage at 4°C and in darkness were investigated. The results showed that the acid value, peroxide value, anisidine index and wax content increased and the unsaponifiable matter, total sterol, and total phenol contents as well as antioxidant activity decreased. No significant change was observed in the amounts of equivalent carbon equivalent (ECN) of triacylglycerols during storage (p > 0.05). The main fatty acid and sterol were oleic acid and bet-sitosterol, respectively, and the major biophenolic compound was ferulic acid followed by cafeic acid, catechin, and oleuropein, respectively. Also, the monounsaturated fatty acid content decreased and the content of polyunsaturated fatty acids increased. No important change was seen in the quantity of fatty acid and sterol compounds of storaged olive oils. All quality parameters and physicochemical properties measured during the two years of storage of olive oils were in the range of the limits specified for extra virgin olive oil in the National Standard of Iran No. 1446 as titled “olive oil - characteristics and test methods”.

کلیدواژه‌ها [English]

  • Virgin Olive Oil
  • Wax
  • Sterols
  • Phenolic Compounds
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