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Effect of Composition on Release of Aroma Compounds
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نویسنده
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Samavati Vahid ,Emam-Djomeh Zahra ,Mehdinia Ali ,Mohammadifar Mohammad Amin ,Omid Mahmoud
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منبع
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iranian journal of chemistry and chemical engineering - 2012 - دوره : 31 - شماره : 3 - صفحه:85 -96
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چکیده
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The effect of oleic acid (5 and 10% v/v) and xanthan gum (0.5 and 1% wt) on partitioning and retention of ethyl acetate and diacetyl from two matrices with a different composition was investigated by applying static head space gas chromatography. two matrices with different composition have been developed: one containing carbohydrates (xanthan gum) and in the second one, called complex matrix, lipid (oleic acid) was added. the roles of xanthan gum (xg) and lipid (oleic acid) on the retention of aroma compounds were pointed out. changes in the composition of matrices exhibited a considerable effect on the air/liquid partition coef?cient (ka/l ) values at equilibrium. the kinetic study of the release from both matrices had shown a decrease of the initial rate of release (ri) by reference with water. the rheological properties of all matrices were investigated and the flow behavior of all matrices was successfully modeled with power law and cross models. power law model was found as the better model to describe the flow behavior of dispersions.
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کلیدواژه
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Aroma release ,Complex matrix ,Xanthan gum ,Partition coefficient
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آدرس
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university of tehran, Department of Food Science and Engineering, Faculty of Agricultural Engineering and Technology, University of Tehran, I R IRAN, ایران, Iranian National Center for Oceanography, Marine Living Science Department, Iranian National Center for Oceanography, Tehran, I R IRAN, ایران, shahid beheshti university of medical sciences, Department of Food Science, Faculty of Nutrition and Food Science, Shahid Beheshti University of Medical Sciences, Tehran, I R IRAN, ایران, university of tehran, Department of Agricultural Machinery Engineering, Faculty of Agricultural Engineering and Technology, University of Tehran, I R IRAN, ایران
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Authors
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