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Your search keyword '"XYLOSE"' showing total 157 results
Start Over Descriptor "XYLOSE" Publisher springer berlin heidelberg
157 results on '"XYLOSE"'

36. Metabolic Engineering of Saccharomyces cerevisiae for Xylose Utilization

Author

Hahn-Hägerdal, Bärbel, Wahlbom, C. Fredrik, Gárdonyi, Márk, van Zyl, Willem H., Otero, Ricardo R. Cordero, Jönsson, Leif J., Scheper, T., editor, Babel, W., editor, Blanch, H. W., editor, Cooney, C. L., editor, Endo, I., editor, Enfors, S.-O., editor, Eriksson, K.-E. L., editor, Fiechter, A., editor, Hoare, M., editor, Mattiasson, B., editor, Sahm, H., editor, Schügerl, K., editor, Stephanopoulos, G., editor, von Stockar, U., editor, Tsao, G. T., editor, Venkat, K., editor, Villadsen, J., editor, Wandrey, C., editor, Nielsen, Jens, editor, Eggeling, L., editor, Dynesen, J., editor, Gárdonyi, M., editor, Gill, R. T., editor, de Graaf, A. A., editor, Hahn-Hägerdal, B., editor, Jönsson, L. J., editor, Khosla, C., editor, Licari, R., editor, McDaniel, R., editor, McIntyre, M., editor, Miiller, C., editor, Nielsen, J., editor, Cordero Otero, R. R., editor, Sauer, U., editor, Stafford, D. E., editor, Wahlbom, C. E., editor, Yanagimachi, K. S., editor, and van Zyl, W. H., editor

Published
2001
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37. Genetic Engineering for Improved Xylose Fermentation by Yeasts

Author

Jeffries, Thomas W., Shi, Nian-Qing, Scheper, T., editor, Babel, W., editor, Blanch, H. W., editor, Cooney, C. L., editor, Enfors, S. -O., editor, Eriksson, K. -E. L., editor, Fiechter, A., editor, Klibanov, A. M., editor, Mattiasson, B., editor, Primrose, S. B., editor, Rehm, H. J., editor, Rogers, P. L., editor, Sahm, H., editor, Schügerl, K., editor, Tsao, G. T., editor, Venkat, K., editor, Villadsen, J., editor, von Stockar, U., editor, Wandrey, C., editor, Brainard, A. P., editor, Bungay, H. R., editor, Cao, N. J., editor, Cen, P., editor, Chen, Z., editor, Du, J., editor, Foody, B., editor, Gong, C. S., editor, Hall, P., editor, Ho, N. W. Y., editor, Irwin, D. C., editor, Iyer, P., editor, Jeffries, T. W., editor, Ladisch, C. M., editor, Ladisch, M. R., editor, Lee, Y. Y., editor, Mosier, N. S., editor, Mühlemann, H. M., editor, Sedlak, M., editor, Shi, N. -Q., editor, Tolan, J. S., editor, Torget, R. W., editor, Wilson, D. B., editor, and Xia, L., editor

Published
1999
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38. Ethanol Production from Renewable Resources

Author

Gong, C. S., Cao, N. J., Du, J., Tsao, G. T., Scheper, T., editor, Babel, W., editor, Blanch, H. W., editor, Cooney, C. L., editor, Enfors, S. -O., editor, Eriksson, K. -E. L., editor, Fiechter, A., editor, Klibanov, A. M., editor, Mattiasson, B., editor, Primrose, S. B., editor, Rehm, H. J., editor, Rogers, P. L., editor, Sahm, H., editor, Schügerl, K., editor, Tsao, G. T., editor, Venkat, K., editor, Villadsen, J., editor, von Stockar, U., editor, Wandrey, C., editor, Brainard, A. P., editor, Bungay, H. R., editor, Cao, N. J., editor, Cen, P., editor, Chen, Z., editor, Du, J., editor, Foody, B., editor, Gong, C. S., editor, Hall, P., editor, Ho, N. W. Y., editor, Irwin, D. C., editor, Iyer, P., editor, Jeffries, T. W., editor, Ladisch, C. M., editor, Ladisch, M. R., editor, Lee, Y. Y., editor, Mosier, N. S., editor, Mühlemann, H. M., editor, Sedlak, M., editor, Shi, N. -Q., editor, Tolan, J. S., editor, Torget, R. W., editor, Wilson, D. B., editor, and Xia, L., editor

Published
1999
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49. Heterologous expression of genes for bioconversion of xylose to xylonic acid in Corynebacterium glutamicum and optimization of the bioprocess

Author

Devi Rajan, Silvin Hannibal, M. S. Lekshmi Sundar, Keerthi Sasikumar, K. Madhavan Nampoothiri, Volker F. Wendisch, and Aliyath Susmitha

Subjects
Bioconversion, lcsh:Biotechnology, Biophysics, lcsh:QR1-502, Pentose, Response surface methodology (RSM), Xylose, Applied Microbiology and Biotechnology, lcsh:Microbiology, Corynebacterium glutamicum, chemistry.chemical_compound, lcsh:TP248.13-248.65, Xylose dehydrogenase, Biomass, Bioprocess, chemistry.chemical_classification, Xylonic acid, chemistry, Biochemistry, Fermentation, Original Article, Heterologous expression
Abstract

In bacterial system, direct conversion of xylose to xylonic acid is mediated through NAD-dependent xylose dehydrogenase (xylB) and xylonolactonase (xylC) genes. Heterologous expression of these genes from Caulobacter crescentus into recombinant Corynebacterium glutamicum ATCC 13032 and C. glutamicum ATCC 31831 (with an innate pentose transporter, araE) resulted in an efficient bioconversion process to produce xylonic acid from xylose. Process parameters including the design of production medium was optimized using a statistical tool, Response Surface Methodology (RSM). Maximum xylonic acid of 56.32 g/L from 60 g/L xylose, i.e. about 76.67% of the maximum theoretical yield was obtained after 120 h fermentation from pure xylose with recombinant C. glutamicum ATCC 31831 containing the plasmid pVWEx1 xylB. Under the same condition, the production with recombinant C. glutamicum ATCC 13032 (with pVWEx1 xylB) was 50.66 g/L, i.e. 69% of the theoretical yield. There was no significant improvement in production with the simultaneous expression of xylB and xylC genes together indicating xylose dehydrogenase activity as one of the rate limiting factor in the bioconversion. Finally, proof of concept experiment in utilizing biomass derived pentose sugar, xylose, for xylonic acid production was also carried out and obtained 42.94 g/L xylonic acid from 60 g/L xylose. These results promise a significant value addition for the future bio refinery programs.

Published
2020

50. Endo-xylanases as tools for production of substituted xylooligosaccharides with prebiotic properties

Author

Patrick Adlercreutz, Eva Nordberg Karlsson, Eva Schmitz, and Javier A. Linares-Pastén

Subjects
0106 biological sciences, 0301 basic medicine, Arabinose, medicine.medical_treatment, Oligosaccharides, Glucuronates, Uronic acid, Xylose, 01 natural sciences, Applied Microbiology and Biotechnology, Oligosaccharide, Substrate Specificity, 03 medical and health sciences, chemistry.chemical_compound, 010608 biotechnology, medicine, Humans, Glycoside hydrolase, chemistry.chemical_classification, Endo-1,4-beta Xylanases, Xylanase, Prebiotic, General Medicine, Mini-Review, Xylan, Gastrointestinal Microbiome, Gastrointestinal Tract, 030104 developmental biology, Prebiotics, Uronic Acids, chemistry, Biochemistry, Xylans, Biotechnology
Abstract

Xylan has a main chain consisting of β-1,4-linked xylose residues with diverse substituents. Endoxylanases cleave the xylan chain at cleavage sites determined by the substitution pattern and thus give different oligosaccharide product patterns. Most known endoxylanases belong to glycoside hydrolase (GH) families 10 and 11. These enzymes work well on unsubstituted xylan but accept substituents in certain subsites. The GH11 enzymes are more restricted by substituents, but on the other hand, they are normally more active than the GH10 enzymes on insoluble substrates, because of their smaller size. GH5 endoxylanases accept arabinose substituents in several subsites and require it in the − 1 subsite. This specificity makes the GH5 endoxylanases very useful for degradation of highly arabinose-substituted xylans and for the selective production of arabinoxylooligosaccharides, without formation of unsubstituted xylooligosaccharides. The GH30 endoxylanases have a related type of specificity in that they require a uronic acid substituent in the − 2 subsite, which makes them very useful for the production of uronic acid substituted oligosaccharides. The ability of dietary xylooligosaccharides to function as prebiotics in humans is governed by their substitution patterns. Endoxylanases are thus excellent tools to tailor prebiotic oligosaccharides to stimulate various types of intestinal bacteria and to cause fermentation in different parts of the gastrointestinal tract. Continuously increasing knowledge on the function of the gut microbiota and discoveries of novel endoxylanases increase the possibilities to achieve health-promoting effects.

Published
2018

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