کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5761645 1624799 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Co-production of oligosaccharides and fermentable sugar from wheat straw by hydrothermal pretreatment combined with alkaline ethanol extraction
ترجمه فارسی عنوان
تولید همزمان الیگوساکارید ها و شکر قابل اشتعال از کاه گندم با استفاده از روش پیش گرمکن هیدروترمال همراه با استخراج اتانول قلیایی
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
چکیده انگلیسی


- Hydrothermal combined with alkaline ethanol extraction was used to treat wheat straw.
- The products and their distribution in the hydrolysate were determined.
- A maximum xylo-oligosaccharides yield of 61.69 g/kg wheat straw was achieved.
- The digestibility of the residue was 3.5 times higher than that of the raw material.

Co-production of high value-added oligosaccharides and fermentable sugar from wheat straw is very attractive. In this study, hydrothermal pretreatment combined with alkaline ethanol extraction was developed to pretreat wheat straw for the production of both oligosaccharides and fermentable sugar. The major products in the hydrolysate and the enzymatic digestibility of the remaining residue were evaluated. Results showed that xylo-oligosaccharides (XOS) and gluco-oligosaccharides (GluOS) were the major products in the hydrolysate, and a maximum XOS yield of 61.69 g/kg wheat straw was achieved as the wheat straw was hydrothermally pretreated at 180 °C for 0.5 h. The HSQC results revealed that the degraded product in the hydrolysate was mainly (1 →  4)-β-d-xylan attached with α-d-arabinose, 4-O-methyl-d-glucuronic acids, and/or acetyl group. Additionally, the enzymatic hydrolysis rate of the cellulose-rich fractions obtained from the combined treatment process was enhanced 1.5 and 3.5 times, respectively, than that of the hydrothermally pretreated and raw wheat straw.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Industrial Crops and Products - Volume 111, January 2018, Pages 78-85
نویسندگان
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