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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 by means of chemical reactions which are adapted to the necessities of assorted sectors. notwithstanding, as a result emerging curiosity in sustainable improvement and ecologically benign practices, microbial transformation techniques are usually most well liked over the normal chemical conversion procedure. the previous have a number of merits, together with much less chemical load at the setting, larger potency, and the facility to dilute a number of downstream transformation makes an attempt whereas retaining product yield and restoration.
This booklet goals to disseminate the most up-tp-date advances within the biotechnological creation of D-xylitol and its purposes in scientific and health and wellbeing care. it's a distinctive selection of 15 booklet chapters cut up into five sections and written by way of specialists of their respective fields, who current severe insights into a number of issues, evaluate present examine, and talk about destiny development during this zone. This booklet additionally presents crucial info on hemicellulose hydrolysis to get better D-xylose, detoxing of hemicellulose hydrolysates, and more suitable fermentation equipment 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 future health care were used to justify the fee incurred for developing the demonstration plant for D-xylitol creation available in the market. except researchers and post-graduate scholars within the box of microbial biotechnology, this ebook will help these within the company neighborhood who care for the industrial research of bio-based items and their marketing.
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Additional resources for D-Xylitol: Fermentative Production, Application and Commercialization
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1 Introduction The low cost and renewable nature of agro-residues such as sugarcane bagasse, wheat straw, rice straw, corn stover, etc. represent the ideal feedstock for their conversion into value-added products by biotechnological routes (Mantanis et al. 2000; Mussatto and Teixeira 2010). These agro-residues, like other lignocellulosic materials, are constituted primarily of lignin, hemicellulose(s) and cellulose. The carbohydrate fraction (hemicellulose and cellulose) can be depolymerised into sugars which act as a primary carbon source for the microbial biocatalysts for the production of xylitol, ethanol, organic acids, industrial enzymes, etc.
Chandel et al. 1 Introduction The low cost and renewable nature of agro-residues such as sugarcane bagasse, wheat straw, rice straw, corn stover, etc. represent the ideal feedstock for their conversion into value-added products by biotechnological routes (Mantanis et al. 2000; Mussatto and Teixeira 2010). These agro-residues, like other lignocellulosic materials, are constituted primarily of lignin, hemicellulose(s) and cellulose. The carbohydrate fraction (hemicellulose and cellulose) can be depolymerised into sugars which act as a primary carbon source for the microbial biocatalysts for the production of xylitol, ethanol, organic acids, industrial enzymes, etc.
2007a). During dilute acid hydrolysis of agro-residues, parameters such as temperature, time, acid concentration and solid-to-liquid ratio play critical roles in obtaining optimum sugar recovery and minimum generation of inhibitors (Taherzadeh and Karimi 2007). The establishment of these parameters is of fundamental importance to define optimal conditions of hydrolysis to ensure the success of the process, in view of concerns taken into account since the hydrolyzate will be used as fermentation medium (Gírio et al.