By Francisco M. Gírio, Florbela Carvalheiro, Luís C. Duarte, Rafał Bogel-Łukasik (auth.), Silvio Silvério da Silva, Anuj Kumar Chandel (eds.)
Commercially, D-xylitol is produced via chemical reactions which are adapted to the necessities of varied sectors. in spite of the fact that, end result of the emerging curiosity in sustainable improvement and ecologically benign practices, microbial transformation techniques are typically most well-liked over the normal chemical conversion strategy. the previous have a number of benefits, together with much less chemical load at the surroundings, larger potency, and the power to dilute a number of downstream transformation makes an attempt whereas preserving product yield and restoration.
This publication goals to disseminate the most up-tp-date advances within the biotechnological creation of D-xylitol and its functions in scientific and future health care. it's a designated number of 15 e-book chapters break up into five sections and written by way of specialists of their respective fields, who current severe insights into a number of issues, assessment present learn, and talk about destiny growth during this region. This ebook additionally offers crucial details on hemicellulose hydrolysis to get well D-xylose, cleansing of hemicellulose hydrolysates, and superior fermentation tools for elevated D-xylitol construction. The highlights of pressure development to extend the D-xylitol titers and downstream restoration of D-xylitol also are mentioned in numerous sections. the present purposes of D-xylitol in scientific and healthiness care were used to justify the associated fee incurred for constructing the demonstration plant for D-xylitol construction available in the market. except researchers and post-graduate scholars within the box of microbial biotechnology, this e-book will support these within the enterprise group who care for the commercial research of bio-based items and their marketing.
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Additional info for D-Xylitol: Fermentative Production, Application and Commercialization
Bioresour Technol 40:131–136 Vázquez MJ, Alonso JL, Domínguez H, Parajó JC (2001) Production of xylose-containing fermentation media by enzymatic post-hydrolysis of oligomers produced by corn cob autohydrolysis. World J Microbiol Biotechnol 17:817–822 Vázquez MJ, Alonso JL, Domínguez H, Parajó JC (2002) Enzymatic processing of crude, xylooligomer solutions obtained by autohydrolysis of Eucalyptus wood. Food Biotechnol 16:91–105 Vegas R, Alonso JL, Domínguez H, Parajó JC (2008a) Enzymatic processing of rice husk autohydrolysis products for obtaining low molecular weight oligosaccharides.
Bioresour Technol 100:5865–5871 Mancilha IM, Karim MN (2003) Evaluation of ion exchange resins for removal of inhibitory compounds from corn stover hydrolyzate for xylitol fermentation. Biotechnol Prog 19:1837–1841 Marcotullio G, de Jong W (2010) Chloride ions enhance furfural formation from D-xylose in dilute aqueous acidic solutions. Green Chem 12:1739–1746 Marcotullio G, Krisanti E, Giuntoli J, de Jong W (2011) Selective production of hemicellulosederived carbohydrates from wheat straw using dilute HCl or FeCl(3) solutions under mild conditions.
Significantly dissolved (\10 %). Nevertheless, hemicellulose is recovered mainly in the oligomeric form. Another further disadvantage of this process is its low selectivity, as delignification can also be high (Kim et al. 2003, 2008; Kim and Lee 2005). The main constraints of the ammonia-based processes are the cost associated with ammonia, its recovery, and the safety issues regarding its use (Ogier et al. 1999). On the other hand, the economy is positively influenced by the high total sugar yields achieved (although many of which in oligomeric form).