کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7784559 | 1500577 | 2018 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Two-step economical welan gum production by Sphingomonas sp. HT-1 from sugar industrial by-products
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Two-step economical welan gum production by Sphingomonas sp. HT-1 from sugar industrial by-products Two-step economical welan gum production by Sphingomonas sp. HT-1 from sugar industrial by-products](/preview/png/7784559.png)
چکیده انگلیسی
A two-step fermentation strategy using glucose mother liquor (GML) for cell growth and xylose mother liquor (XML) for welan gum synthesis was used to alleviate uneconomic welan gum fermentation. This study revealed: (1) optimal initial GML concentration was 11.7 g/L (10 g/L sugars contained); (2) optimal XML feeding strategy was pseudo-exponential fed-batch and feeding time was 12th h-54th h, amounting to 25.7 g/L XML (20 g/L sugars contained); and (3) in a 7.5-L bioreactor, welan gum concentration was 22.68 ± 0.50 g/L and its yield reached 0.756 g/g sugars with trace residual sugars. Compared with the cost of batch fermentation using glucose as sole carbon source, the final carbon source costs decreased by 61.40% and the welan gum yield increased by 50%. GML and XML can be used as inexpensive carbon sources for welan gum production with higher yield, giving them industrial application potential to produce value-added chemicals.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 181, 1 February 2018, Pages 412-418
Journal: Carbohydrate Polymers - Volume 181, 1 February 2018, Pages 412-418
نویسندگان
Xiaoliu Liu, Lijun Lin, Xiaoying Xu, Hao Zhang, Lingtian Wu, Ping Zhu, Sha Li, Hong Xu,