دراسة تأثير مدة التخزين على بعض خواص عينات زيت الزيتون في غرب ليبيا
الشريط الجانبي للمقالة
محتوى المقالة الرئيسي
الملخص
بينت هذه الدراسة أن نسبة الرطوبة في عينات مدينة يفرن المخزنة لثلاث سنوات والزاوية المخزنة 30 سنة بلغت على التوالي 0.0828 % و 0.0973 % وفي كلاهما لم تتجاوز الحد المسموح به حسب مقاييس المجلس الدولي لزيت الزيتون و التي تبلغ 0.2 %. بينما باقي العينات بلغت الرطوبة نسبة أعلى من الحدود المسموح بها. نسبة الحموضة للعينات المدروسة لم تتجاوز الحد المسموح به والمحددة بقيمة 17 %. وجد في هذا البحث أن اعلى نسبة لحمض الاولييك كانت لعينة زيت الزاوية المخزنة 30 سنة حيث بلغت نسبته 32 %. ومن النتائج المتحصل عليها لقيمة البيروكسيد يتضح انها لم تتجاوز الحد المسموح به وهو 20 ملي مكافئى لكل كيلوجرام. من اهم نتائج هذه الدراسة ان مستخلص عينة زيت زيتون الزاوية المخزن لفترة 30 سنة يمتلك أكبر قوة اختزالية و بلغت 0.077 ± 0.7 مما يعزز اهمية زيت الزيتون في حماية الخلايا من العديد من الامراض المزمنة و الحد من نشوء وانتشار الخلايا السرطانية.
تفاصيل المقالة
المراجع
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