کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7593221 | 1492115 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A study on the selection of chemiluminescence system for the flow injection determination of the total polyphenol index of plant-derived foods
ترجمه فارسی عنوان
مطالعه ای در مورد انتخاب سیستم شیمیایی مایع برای تعیین جریان تزریق جریان کلی شاخص پلی فنول مواد غذایی مشتق شده از گیاه
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Different chemiluminescence systems based on luminol, permanganate, manganese(IV) and cerium(IV) reagents were compared regarding their sensitivity and selectivity to determine plant polyphenols. Among the seventeen systems tested, Mn(IV)-formaldehyde-hexametaphosphate was considered to be the most suitable for polyphenols detection. The developed flow injection method (FI-CL) based on enhancing effect of polyphenols on Mn(IV) chemiluminescence is characterised by low detection limit of gallic acid (0.02 μg Lâ1) and high precision (RSD = 1.7%). The calibration graph was linear from 0.1 to 100 μg Lâ1. The selectivity studies revealed that the FI-CL method ensures accurate determination of the total polyphenols content in food samples. The method was successfully applied to analysis of a variety of plant-derived foods (wine, tea, cereal coffee, fruit and vegetable juices, herbs and spices). The proposed method is superior to conventional spectrophotometric assays due to its higher sample throughput (195 samples hâ1), simplicity, sensitivity and, above all, higher selectivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 176, 1 June 2015, Pages 175-183
Journal: Food Chemistry - Volume 176, 1 June 2015, Pages 175-183
نویسندگان
Edyta Nalewajko-Sieliwoniuk, Julita Malejko, Marta ÅwiÄczkowska, Agata Kowalewska,