کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
1188856 963499 2006 8 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Nutritional characterisation of commercial traditional pasteurised tomato juices: carotenoids, vitamin C and radical-scavenging capacity
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موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Nutritional characterisation of commercial traditional pasteurised tomato juices: carotenoids, vitamin C and radical-scavenging capacity
چکیده انگلیسی

Commercial conventional thermal pasteurised tomato juices were nutritionally evaluated, at the same point in their commercial shelf lives, for their carotenoid contents, vitamin C, and antioxidant activities and physical and physicochemical characterisation. Higher lycopene epoxide, lycopene, γ-carotene, β-carotene contents, and vitamin A values were found in those juices obtained from a concentrated tomato source, suggesting structural changes in the tomato tissue due to the concentration process. The stability of vitamin C seems to be affected by the type of container. Radical-scavenging capacity, measured on the basis of the DPPH stable radical, was higher in the aqueous (AQ) fractions than in the organic (OR) fractions of tomato juices. Results suggest that vitamin C was mainly responsible for the DPPH radical-scavenging of the AQ tomato fractions, whereas lutein and lycopene were the individual carotenoids responsible, not only for the EC50, but also the kinetic changes of the DPPH of the OR tomato fractions. These results extend the research in processed tomato products to other bioactive components, different from the most generally studied lycopene.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 98, Issue 4, 2006, Pages 749–756
نویسندگان
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