کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
686539 889083 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization of lignin isolated from some nonwood available in Bangladesh
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Characterization of lignin isolated from some nonwood available in Bangladesh
چکیده انگلیسی

Lignins isolated from cotton stalks, jute stick and dhaincha by acidolytic dioxane were characterized using alkaline nitrobenzene oxidation, elemental analysis, methoxyl analysis and molecular weight analysis and UV, IR 1H NMR spectroscopy. The C9 formulas for cotton stalks, jute stick and dhaincha (Sesbania aculeata) lignin were C9H9.36O4.50(OCH3)1.23, C9H9.02O4.57(OCH3)1.35 and C9H8.88O4.65(OCH3)1.50, respectively. All three lignins were of the guaiacyl–syringyl type. Cotton stalks lignin contained more p-hydroxy phenyl unit than dhaincha and jute stick lignins as observed by alkaline nitrobenzene oxidation products. The β-O-4 units in these nonwood lignins had predominately erythro stereochemistry type.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 98, Issue 2, January 2007, Pages 465–469
نویسندگان
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