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Enzymatic acylation of starch

Alissandratos, Apostolos and Halling, Peter (2012) Enzymatic acylation of starch. Bioresource Technology. (In Press)

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Abstract

Starch a cheap, abundant and renewable natural material has been chemically modified for many years. The popular modification acylation has been used to adjust rheological properties as well as deliver polymers with internal plasticizers and other potential uses. However the harsh reaction conditions required to produce these esters may limit their use, especially in sensitive applications (foods, pharmaceuticals, etc.). The use of enzymes to catalyse acylation may provide a suitable alternative due to high selectivities and mild reaction conditions. Traditional hydrolase-catalysed synthesis in non-aqueous apolar media is hard due to lack of polysaccharide solubility. However, acylated starch derivatives have recently been successfully produced in other non-conventional systems: (a) surfactant-solubilised subtilisin and suspended amylose in organic media; (b) starch nanoparticles dispersed in organic medium with immobilised lipase; (c) aqueous starch gels with lipase and dispersed fatty acids. We attempt a systematic review that draws parallels between the seemingly unrelated approaches described.

Item type: Article
ID code: 38044
Keywords: starch ester, polysaccharide, enzymatic acylation, Chemistry, Bioengineering, Environmental Engineering, Waste Management and Disposal
Subjects: Science > Chemistry
Department: Faculty of Science > Pure and Applied Chemistry
Related URLs:
Depositing user: Pure Administrator
Date Deposited: 01 Mar 2012 10:45
Last modified: 27 Mar 2014 09:59
URI: http://strathprints.strath.ac.uk/id/eprint/38044

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