{"title":"Biorecycling of polylactide: From enzymatic depolymerization to biotransformation of released products","authors":"Alaric Catard, Isabelle Chevalot, Sandrine Hoppe","doi":"10.1002/cjce.25717","DOIUrl":null,"url":null,"abstract":"<p>Polylactic acid (PLA) is a polymer that can replace several petroleum-based polymers due to its properties and bio-sourced nature. However, sustainable recycling processes of PLA avoiding the creation of waste and enabling it to be used as a raw material must be implemented. Enzymatic hydrolysis seems to be a promising way to recycle PLA. The different approaches that have led to the discovery of new PLA depolymerizing enzymes are reviewed here. Moreover, an overview of the various factors affecting enzymatic depolymerization of PLA have been done as well as the contribution of enzyme engineering in understanding the essential residues of these enzymes and improving their properties (e.g., thermostability and activity). Finally, enzymatic polymerization and biosynthesis of PLA from lactide or lactic acid have been reviewed to provide an overview of the various biotechnological approaches that could enable PLA to be completely recycled and remade.</p>","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"103 7","pages":"2969-2999"},"PeriodicalIF":1.6000,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Canadian Journal of Chemical Engineering","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/cjce.25717","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Polylactic acid (PLA) is a polymer that can replace several petroleum-based polymers due to its properties and bio-sourced nature. However, sustainable recycling processes of PLA avoiding the creation of waste and enabling it to be used as a raw material must be implemented. Enzymatic hydrolysis seems to be a promising way to recycle PLA. The different approaches that have led to the discovery of new PLA depolymerizing enzymes are reviewed here. Moreover, an overview of the various factors affecting enzymatic depolymerization of PLA have been done as well as the contribution of enzyme engineering in understanding the essential residues of these enzymes and improving their properties (e.g., thermostability and activity). Finally, enzymatic polymerization and biosynthesis of PLA from lactide or lactic acid have been reviewed to provide an overview of the various biotechnological approaches that could enable PLA to be completely recycled and remade.
期刊介绍：
The Canadian Journal of Chemical Engineering (CJChE) publishes original research articles, new theoretical interpretation or experimental findings and critical reviews in the science or industrial practice of chemical and biochemical processes. Preference is given to papers having a clearly indicated scope and applicability in any of the following areas: Fluid mechanics, heat and mass transfer, multiphase flows, separations processes, thermodynamics, process systems engineering, reactors and reaction kinetics, catalysis, interfacial phenomena, electrochemical phenomena, bioengineering, minerals processing and natural products and environmental and energy engineering. Papers that merely describe or present a conventional or routine analysis of existing processes will not be considered.
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