期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 26, 期 17, 页码 1400-1405出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200500410
关键词
aromatic; biodegradable; enzymes; polyesters; poly(ethylene terephthalate)
It is demonstrated that PET, which is usually regarded as non-biodegradable, can effectively be depolymerized by a hydrolase from the actinomycete Thermobifida fusca. Erosion rates of 8 to 17 mu m per week were obtained upon incubation at 55 degrees C. Lipases from Pseudomonas sp. and Candida antarctica did not degrade PET under comparable conditions. The influences of crystallinity, melting point, and glass transition temperature on the enzymatic attack on PET, PBT, and PHB are discussed.
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