کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7606755 | 1492964 | 2015 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Analytical pyrolysis - A tool for revealing of lignin structure-antioxidant activity relationship
ترجمه فارسی عنوان
تجزیه و تحلیل پریولیز - ابزاری برای آشکارسازی ساختار لیگنین - فعالیت آنتیاکسیدانی است
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Systematic and thorough investigation of the structure and antioxidant properties of different technical lignins, high molecular polyphenols of natural origin, which are formed in large amounts as by-product of pulp-and-paper industry and other lignocellulosics chemical processing, was made. Py-GC/MS was the main method used to quantitatively determine the structural descriptors needed for rationalization of lignin antioxidant activity. Size-exclusion chromatography (SEC), electron paramagnetic resonance (EPR) spectroscopy and wet chemistry tests were also used as complementary methods. Antioxidant properties of lignin samples under study were evaluated as their capacity to scavenge the 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radicals. The use of Py-GC/MS in combination with some other experimental and chemometric methods allowed for the first time quantitatively characterize lignin structure-antioxidant activity relationship, which can significantly favor the rational use of lignin.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Analytical and Applied Pyrolysis - Volume 113, May 2015, Pages 360-369
Journal: Journal of Analytical and Applied Pyrolysis - Volume 113, May 2015, Pages 360-369
نویسندگان
Jevgenija Ponomarenko, Tatiana Dizhbite, Maris Lauberts, Aleksandrs Volperts, Galina Dobele, Galina Telysheva,