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International journal of Advanced Biological and Biomedical Research، جلد ۲، شماره ۱۱، صفحات ۲۸۴۲-۲۸۴۹
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
Determination of Antioxidant Power of Some Various Grape Juices by Voltammetric Method and Its Correlation with Polyphenolic Content |
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| چکیده انگلیسی مقاله |
Objective: Due to rich resources of phenolic components such as anthocyanin and flavonoids, grape has grabbed lots of attention. Antioxidants are the frontline of the human immune system against free radicals and they are of high importance for the human health. Methods: In order to determine antioxidant activities, the amount of phenols, anthocyanin and ascorbic acid of 2 grapes’ varieties ("white seedless" and "red seedless" as two famous verities of Qazvin's grapes) have been studied with cyclic voltammetry including, DPPH and Folin-Ciocalteo reagent at room and refrigerator temperature, before and after pasteurization process. Results: The results of this study has shown that the two verities of grapes did not have a meaningful difference in total antioxidant concentration; and cyclic voltammetry method has been more or less able to define the type of antioxidant according to the results of this study. Moreover, the two types of grapes had a significant difference in concentration of ascorbic acid and anthocyanin so that concentration of ascorbic acid in white grape juice in room temperature was 53ppm while at the same situation it was 24ppm in red grape juice. |
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| کلیدواژه‌های انگلیسی مقاله |
Grape,Anthocyanin,Ascorbic acid,DPPH,cyclic voltammetry |
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| نویسندگان مقاله |
elahesadaat حسینی |
department of food science, shahr-e-qods branch, islamic azad university, tehran, iran
سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (Islamic azad university science and research branch)
محمد رفیعی |
department of chemistry, institute for advanced studies in basic sciences iasbs , zanjan, iran
سازمان اصلی تایید شده: دانشگاه تحصیلات تکمیلی علوم پایه زنجان (Institute for advanced studies in basic sciences)
مهتا میرزایی |
department of food science, shahr-e-qods branch, islamic azad university, tehran, iran
سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (Islamic azad university science and research branch)
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| نشانی اینترنتی |
http://www.ijabbr.com/article_11122_c415d6af2251bbf620b9f7e75075e8d6.pdf |
| فایل مقاله |
اشکال در دسترسی به فایل - ./files/site1/rds_journals/2255/article-2255-303124.pdf |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
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