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Current State and Perspectives Related to the Polyethylene Terephthalate Hydrolases Available for Biorecycling
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-05-22 , DOI: 10.1021/acssuschemeng.0c01638 Fusako Kawai 1 , Takeshi Kawabata 2 , Masayuki Oda 3
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-05-22 , DOI: 10.1021/acssuschemeng.0c01638 Fusako Kawai 1 , Takeshi Kawabata 2 , Masayuki Oda 3
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Polyethylene terephthalate (PET) hydrolase is a challenging target as PET is a commonly used plastic that is extremely resistant to enzymatic attack. Since the discovery of a PET hydrolase from Thermobifida fusca in 2005, novel PET hydrolases and their availability toward waste PET have been investigated. At present, at least four thermophilic cutinases are known as PET hydrolases that could be used for the management of amorphous PET waste, such as packaging materials. Heat-labile PETase from Ideonella sakaiensis and its homologues from mesophilic bacteria exist in the environment. However, PET can be efficiently hydrolyzed with thermophilic hydrolases. This Review focuses on the current state of PET hydrolases and the potential of their application. Contrary to an amorphous PET, the enzymatic hydrolysis of crystalline PET (particularly PET bottles) remains to be fully elucidated. It cannot be assured whether the biorecycling of general PET would be put into practice in the near future, but the plan is getting closer to the goal. PET hydrolases can be versatile polyesterases as they can hydrolyze not only PET but also other polyesters. Additionally, the thermostability of PET hydrolases is advantageous to their application in terms of reaction speed and durability.
中文翻译：
可用于生物回收的聚对苯二甲酸乙二醇酯水解酶的现状与展望
聚对苯二甲酸乙二酯（PET）水解酶是一个具有挑战性的目标，因为PET是一种非常耐酶攻击的常用塑料。自2005年从Thermobifida fusca发现PET水解酶以来，一直在研究新型PET水解酶及其在废PET中的可用性。目前，已知至少四种嗜热角质酶为PET水解酶，可用于处理无定形PET废物，例如包装材料。阪神小球藻的不耐热PETase并且其嗜温细菌的同系物存在于环境中。然而，PET可以被嗜热水解酶有效地水解。本文将重点介绍PET水解酶的现状及其应用潜力。与无定形PET相反，结晶PET（特别是PET瓶）的酶水解作用尚待充分阐明。不能确定是否将在不久的将来实施普通PET的生物回收，但是该计划正在接近目标。PET水解酶可以是通用的聚酯酶，因为它们不仅可以水解PET，而且还可以水解其他聚酯。另外，就反应速度和耐久性而言，PET水解酶的热稳定性对其应用是有利的。
更新日期：2020-06-23
中文翻译：
可用于生物回收的聚对苯二甲酸乙二醇酯水解酶的现状与展望
聚对苯二甲酸乙二酯（PET）水解酶是一个具有挑战性的目标，因为PET是一种非常耐酶攻击的常用塑料。自2005年从Thermobifida fusca发现PET水解酶以来，一直在研究新型PET水解酶及其在废PET中的可用性。目前，已知至少四种嗜热角质酶为PET水解酶，可用于处理无定形PET废物，例如包装材料。阪神小球藻的不耐热PETase并且其嗜温细菌的同系物存在于环境中。然而，PET可以被嗜热水解酶有效地水解。本文将重点介绍PET水解酶的现状及其应用潜力。与无定形PET相反，结晶PET（特别是PET瓶）的酶水解作用尚待充分阐明。不能确定是否将在不久的将来实施普通PET的生物回收，但是该计划正在接近目标。PET水解酶可以是通用的聚酯酶，因为它们不仅可以水解PET，而且还可以水解其他聚酯。另外，就反应速度和耐久性而言，PET水解酶的热稳定性对其应用是有利的。
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