Enzymatic degradation of poly(ethylene terephthalate):: Rapid hydrolyse using a hydrolase from T-fusca
Enzymatic degradation of poly(ethylene terephthalate):: Rapid hydrolyse using a hydrolase from T-fusca
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DOI：
10.1002/marc.200500410
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发表时间：
2005-09-05
影响因子：
4.6
通讯作者：
Deckwer, WD
中科院分区：
文献类型：
--
作者：
Müller, RJ;Schrader, H;Deckwer, WD
研究表明，通常被认为是不可生物降解的PET可以被放线菌热裂菌的水解酶有效地解聚。在55℃的孵育条件下，每周的侵蚀速率为8 ~ 17 μ m。来自假单胞菌和南极洲念珠菌的脂肪酶在可比条件下不能降解PET。讨论了结晶度、熔点和玻璃化转变温度对酶攻PET、PBT和PHB的影响。
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.