کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
680183 | 1459964 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Xylan hydrolysis in Populus trichocarpa Ã P. deltoides and model substrates during hydrothermal pretreatment
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
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چکیده انگلیسی
Previous studies defined easy and difficult to hydrolyze fractions of hemicellulose that may result from bonds among cellulose, hemicellulose, and lignin. To understand how such bonds affect hydrolysis, Populus trichocarpa Ã Populus deltoides, holocellulose isolated from P.trichocarpa Ã P. deltoides and birchwood xylan were subjected to hydrothermal flow-through pretreatment. Samples were characterized by glycome profiling, HPLC, and UPLC-MS. Glycome profiling revealed steady fragmentation and removal of glycans from solids during hydrolysis. The extent of polysaccharide fragmentation, hydrolysis rate, and total xylose yield were lowest for P.trichocarpa Ã P. deltoides and greatest for birchwood xylan. Comparison of results from P.trichocarpa Ã P. deltoides and holocellulose suggested that lignin-carbohydrate complexes reduce hydrolysis rates and limit release of large xylooligomers. Smaller differences between results with holocellulose and birchwood xylan suggest xylan-cellulose hydrogen bonds limited hydrolysis, but to a lesser extent. These findings imply cell wall structure strongly influences hydrolysis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 179, March 2015, Pages 202-210
Journal: Bioresource Technology - Volume 179, March 2015, Pages 202-210
نویسندگان
Heather L. Trajano, Sivakumar Pattathil, Bruce A. Tomkins, Timothy J. Tschaplinski, Michael G. Hahn, Gary J. Van Berkel, Charles E. Wyman,