An overview of the metabolically engineered strains and innovative processes used for the value addition of biomass derived xylose to xylitol and xylonic acid

• Published in: Bioresource technology Vol. 345; p. 126548
• Main Authors: Lekshmi Sundar, M.S, Madhavan Nampoothiri, K.
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01.02.2022
• Subjects: Agro-residual biomass; Biomass; Fermentation; Glucose; Pentose; Xylitol; Xylonic acid; Xylose; Xylose - analogs & derivatives; Xylose; Xylonic acid; Xylitol; Agro-residual biomass; Pentose
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2021.126548

[Display omitted] •There is a need for progressive and innovative strategies for the biomass value addition.•Xylose has to be utilized rationally for the commercial viability of biorefinaries.•Xylitol and xylonate are highly demanded commodity chemicals in food and pharma industries.•There are natural and metabolically engineered strains utilizing xylose. Xylose, the most abundant pentose sugar of the hemicellulosic fraction of lignocellulosic biomass, has to be utilized rationally for the commercial viability of biorefineries. An effective pre-treatment strategy for the release of xylose from the biomass and an appropriate microbe of the status of an Industrial strain for the utilization of this pentose sugar are key challenges which need special attention for the economic success of the biomass value addition to chemicals. Xylitol and xylonic acid, the alcohol and acid derivatives of xylose are highly demanded commodity chemicals globally with plenty of applications in the food and pharma industries. This review emphasis on the natural and metabolically engineered strains utilizing xylose and the progressive and innovative fermentation strategies for the production and subsequent recovery of the above said chemicals from pre-treated biomass medium.