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[9000498.] رقم البحث : 9000498 - |
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Some Qualiy Attributes of Some Tomato Concentrate Brands Produced In Egypt and Yemen / |
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Agricultural Research Journal Suez Canal University / |
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A. S. El-Sanabani |
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Adel A. Shatta |
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Khaled M. Youssef |
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Salah. K. El-Samahy |
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Tomato concentrate, Egyptian and Yemeni standards, chemical composition, rheological properties, quality control, color, lycopene, carotenoids, pectin. |
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The present study deals with some quality attributes of the tomato concentrate (paste or puree) marketed in Egypt and Yemen under different brands. The impetus behind the present study was the numerous beneficial effects that could be gained from tomato concentrate (paste or puree). The whole work was conducted according to the Egyptian and Yemeni standards. The results of chemical and microbiological determinations showed some or great variations between the tested Egyptian and Yemeni tomato concentrate brands. Therefore, serious control on the quality of tomato concentrate is required. There were a well positive correlations between rheological properties especially, apparent viscosity and total pectin contents. There was a good correlations between Hunter color readings and a*/b* ratio of the samples and concentrations of lycopene and total carotenoids. The effect of temperature on viscosity was very well correlated with the Arrhenius equation (R2 > 0.90). |
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