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It was found that the glucan content of the weed stem was similar to that of sugarcane bagasse, but higher than those of corn stover and wheat straw. Several chemical pretreatment methods were applied to the weed stem to increase its enzymatic digestibility. Mild sulfuric acid (&lt;120\u00b0C) or alkali pretreatment did not markedly increase the enzymatic digestibility. However, peracetic acid (PAA) pretreatment dramatically enhanced the enzymatic hydrolysis of the weed stem. Compared to some other common agricultural residues, the weed stem was more difficult to pretreat and digest by cellulase. Fourier transform infrared (FTIR) spectra analysis indicated that the cellulose\u2010related bands became more intensive after pretreatment, especially for PAA\u2010pretreated samples. According to X\u2010ray diffraction spectra, the biomass solids had higher crystallinity indices after pretreatment, although these indices were similar for all of the pretreated samples.<\/jats:p>","DOI":"10.1002\/biot.200900284","type":"journal-article","created":{"date-parts":[[2010,3,26]],"date-time":"2010-03-26T14:15:04Z","timestamp":1269612904000},"page":"493-504","source":"Crossref","is-referenced-by-count":42,"title":["Pretreatment of Siam weed stem by several chemical methods for increasing the enzymatic digestibility"],"prefix":"10.1002","volume":"5","author":[{"given":"Xuebing","family":"Zhao","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lihua","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dehua","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2010,5,3]]},"reference":[{"key":"e_1_2_1_2_2","doi-asserted-by":"crossref","unstructured":"Muniappan R. Reddy G. V. P. Lai P. Y. Distribution and biological control ofChromolaena odorata in: Inderjit S. (Ed.) Invasive Plants: Ecological and Agricultural Aspects Birkh\u00e4user Basel 2005 pp. 223\u2013233.","DOI":"10.1007\/3-7643-7380-6_14"},{"key":"e_1_2_1_3_2","first-page":"83","article-title":"Potential biological control agents of Chromolaena odorata.","volume":"23","author":"Zhang L. H.","year":"2007","journal-title":"Chin. J. Biol. Control."},{"key":"e_1_2_1_4_2","unstructured":"McFadyen R. E. C. Chromolaenain Asia and the Pacific: Spread continues but control prospects improve. Proceedings of the fifth international workshop on biological control and management ofChromolaena odorata Durban South Africa 2000. 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