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Register a new userThe Effect of changing the ratio of corn oil on the physicochemical and microbial properties of mayonnaise
تأثير تغيير نسب زيت الذرة في الخواص الفيزياكيميائية و الميكروبية للمايونيز
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أجريت الدراسة في مخابر كلية الزراعة بقسم علوم الأغذية في جامعة دمشق بهدف دراسـة تـأثير تغير نسب زيت الذرة و صمغ الكزانثان المضافة في الخصائص الريولوجيـة و الكيميائيـة و الميكروبيـة للمايونيز الناتج. صنع المايونيز التقليدي من البيض الطازج و الخل و الملح و الخـردل و حمـض الليمـون بإضافة زيت الذرة بنسبة 70 % ليستخدم شاهداً للمقارنة. و أجري تغيير في نسب الزيت بهدف الحـصول على مايونيز منخفض السعرات الحرارية منخفض الدسم 55 % و 40 % بالمقارنة بالشاهد 70%؛ و ذلـك بإضافة صمغ الكزانثان بنسبة 5.1 % لتعويض النقص الناتج عن انخفاض في نسب الزيت فيه. و قد أكدت الدراسة أن انخفاض نسبة الزيت في مايونيز الحمية الناتج أدى إلى الانخفاض فـي اللزوجـة و الـصلابة مقارنة بعينة الشاهد.
The application of this research was implemented at the laboratories of Food Science Department, Agriculture College, Damascus University in order to investigate the effect of different ratios of added oil upon the rheological, chemical and microbial characteristics of mayonnaise. The traditional mayonnaise was made from fresh egg, vinegar, salt, mustard, citric acid and corn oil at 70% ratio, to be used as a standard. Two changes in the oil ratio: 40% and 50% were applied for obtaining lower oil mayonnaise, with fewer calories (Diet). The influence of adding Xantan gum as a substitute to oil reduction, on the properties of final product was also investigated. Results showed that the addition of Xantan gum at 1.5% was necessary to complement the reduction in the added oil. The results also confirmed that reduction in the added oil of the diet mayonnaise led to reduction in viscosity and firmness when compared with the standard mayonnaise.
References used
Abou-Zeid, M. B. 2006. Sensory, physico-chemical and microbial characteristics of new light mayonnaise formulations. M.Sc. Thesis, Fac. Agric. Cairo University. Egypt
AOAC. 1990. Official methods of analysis, 15th edition: Association of Official Analytical Chemists, Arlington, Virginia
APHA. 1992. Compendium of methods for microbiological examination of foods. American Public Health Association, Washington DC
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