کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4515069 | 1322228 | 2008 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chemical composition of lignin and lipids from tagasaste (Chamaecytisus proliferus spp. palmensis)
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Chemical composition of lignin and lipids from tagasaste (Chamaecytisus proliferus spp. palmensis) Chemical composition of lignin and lipids from tagasaste (Chamaecytisus proliferus spp. palmensis)](/preview/png/4515069.png)
چکیده انگلیسی
The chemical characterization of trimming residues of tagasaste (Chamaecytisus proliferus spp. palmensis), a hardy leguminous shrub that has been recently explored for pulp and paper production, was performed with especial emphasis in the composition of lignin and lipophilic extractives. Tagasaste was characterized by a high content of holocellulose (81%) and α-cellulose (41%), while having a relatively low lignin content of 18.9%. The analysis of lignin was performed “in situ” by pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) and showed a composition with a guaiacyl:syringyl (G:S) molar proportion of 38:62 (S/G molar ratio of 1.6) and the absence of p-hydroxyphenyl (H) units. The high S/G ratio, together with its low lignin content makes tagasaste an adequate raw material for pulping. On the other hand, the relatively high acetone extractive content (1.4%) was mostly due to polar compounds and only 0.2% corresponded to lipophilic compounds. The lipophilic compounds, analyzed by GC and GC/MS, were mainly composed of fatty acids, including α-hydroxyfatty acids, and steroid compounds, such as free and conjugated (esters and glycosides) sterols.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Industrial Crops and Products - Volume 28, Issue 1, July 2008, Pages 29-36
Journal: Industrial Crops and Products - Volume 28, Issue 1, July 2008, Pages 29-36
نویسندگان
Gisela Marques, Ana Gutiérrez, José C. del RÃo,