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J Biotechnol. 2008 May 20;135(1):45-51. doi: 10.1016/j.jbiotec.2008.02.015. Epub 2008 Feb 29.

Enzymatic hydrolysis of PTT polymers and oligomers.

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1
Research Centre Applied Biocatalysis, Petersgasse 14, A-8010 Graz, Austria.

Abstract

Oligomers and polymers (film, fabrics) of the linear aromatic polyester poly(trimethylene terephthalate) (PTT) were treated with polyesterases from Thermomyces lanuginosus, Penicillium citrinum, Thermobifida fusca and Fusarium solani pisi. The cutinase from T. fusca was found to release the highest amounts of hydrolysis products from PTT materials and was able to open and hydrolyse a cyclic PTT dimer according to RP-HPLC-UV detection. In contrast, the lipase from T. lanuginosus also showed activity on the PTT fibres and on bis(3-hydroxypropyl) terephthalate (BHPT) but was not able to hydrolyse the polymer film, mono(3-hydroxypropyl) terephthalate (MHPT) nor the cyclic dimer of PTT. As control enzymes inhibited with mercury chloride were used. Surface hydrophilicity changes were investigated with contact angle measurements and the degree of crystallinity changes were determined with DSC.

PMID:
18405994
DOI:
10.1016/j.jbiotec.2008.02.015
[Indexed for MEDLINE]

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