Metabolic engineering for bioproduction of sugar alcohols |
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Authors: | Akinterinwa Olubolaji Khankal Reza Cirino Patrick Carmen |
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Affiliation: | Department of Chemical Engineering, Pennsylvania State University, University Park, PA 16802, USA. |
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Abstract: | Sugar alcohols find applications in pharmaceuticals, oral and personal care products, and as intermediates in chemical synthesis. While industrial-scale production of these compounds has generally involved catalytic hydrogenation of sugars, microbial-based processes receive increasing attention. The past few years have seen a variety of interesting metabolic engineering efforts to improve the capabilities of bacteria and yeasts to overproduce xylitol, mannitol, and sorbitol. Examples include heterologous expression of yeast xylose reductase in Escherichia coli for the production of xylitol, coexpression of formate dehydrogenase, mannitol dehydrogenase, and a glucose facilitator protein in Corynebacterium glutamicum for mannitol production from fructose and formate, and overexpression of sorbitol-6-phosphate dehydrogenase in lactate dehydrogenase-deficient Lactobacillus plantarum to achieve nearly maximum theoretical yields of sorbitol from glucose. |
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