کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1383058 1500607 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Lignin profiling in extracted xylans by size-exclusion chromatography
ترجمه فارسی عنوان
پروفیل لیگنین در کیلن های استخراج شده توسط کروماتوگرافی انحراف اندازه
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی


• Co-extraction of residual lignins and xylans in alkaline pulp treatments.
• Similar retention of co-extracted lignins and low molar mass xylans in SEC.
• Lignin quantification in SEC of xylans by hyphenation with UV measurements.

Utilization of the polymeric parts of lignocellulose is expected to gain increasing importance in future biorefinery scenarios. In that respect, a particular focus is placed on hemicelluloses from different wood species gained from an industrially feasible upgrading step in the production of dissolving pulps from paper pulps. During alkaline post-extractions for hemicellulose removal, residual lignins are extracted as well. They are either covalently linked to the extracted hardwood xylans or simply co-dissolved in the alkaline lye. In order to better describe the lignin in xylan containing lyes, a method for lignin profiling was set up by hyphenating size-exclusion chromatography of xylans with UV detection which facilitates visualization of the residual lignin distribution. Simultaneous lignin quantification was achieved with lignin standards prepared from Kraft cooking liquors. The setup presented may serve as advanced characterization for novel xylan products.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 151, 20 October 2016, Pages 821–826
نویسندگان
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