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Optimization of the Degradation Processes for Polylactic Acid using Microbial Enzymes: A Brief Summary 利用微生物酶优化聚乳酸降解工艺：简要概述

SustainE Pub Date : 2023-12-01 DOI: 10.55366/suse.v1i2.1

Ovinuchi Ejiohuo

{"title":"Optimization of the Degradation Processes for Polylactic Acid using Microbial Enzymes: A Brief Summary","authors":"Ovinuchi Ejiohuo","doi":"10.55366/suse.v1i2.1","DOIUrl":"https://doi.org/10.55366/suse.v1i2.1","url":null,"abstract":"Polylactic acid (PLA) has emerged as a desirable bioplastic due to its production from renewable materials and biodegradability. However, its low toughness and fragility limit its applications, prompting the blending of PLA with other biopolymers to enhance its properties. As the global demand for bioplastics increases, efficient processes for PLA degradation are needed to match the high rate of plastic production. Chemical, microbial, and enzymatic processing are the major methods of PLA degradation, with enzymatic processing being environmentally friendly and sustainable. recyclable products like lactic acid can also be recovered. This creates a need to determine suitable enzymes that can hydrolyze polylactic acid. PLA exhibits high resistance to direct microbial degradation, making microbial enzymatic processing a more attractive alternative. Microbial enzymes, including proteases, lipases, esterases, and cutinases, have shown potential for PLA degradation. Nevertheless, current research on the enzymatic degradation of PLA needs comprehensive studies on optimal processes, conditions, and influencing factors. This review aims to address this gap by examining microbial enzymes and their processes for the enzymatic degradation of PLA. Findings indicate that microbial enzymes like proteinase K, Savinase, and Alcalase show promise for efficient PLA degradation under optimized conditions. Further research should, therefore, focus on exploring these enzymes further, refining enzymatic degradation processes, exploring genetic modifications of these enzymes, and developing sustainable recycling methods to advance bioplastics like PLA and address plastic pollution challenges effectively. Keywords: Polylactic acid; enzymatic degradation; microbial enzymes; optimization; bioplastic; biodegradability; plastic pollution; bioremediation.","PeriodicalId":509955,"journal":{"name":"SustainE","volume":"367 1-2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139194964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vision to Impact: Advancing Sustainability Research through Sustain Earth Journal (Sustain-E) 从愿景到影响：通过《Sustain Earth Journal》（Sustain-E）推进可持续发展研究

SustainE Pub Date : 2023-12-01 DOI: 10.55366/v1i2.3

Jason McSparren

引用次数: 0

Microplastics: Environmental Impacts, Detection Techniques and Mitigation Strategies 微塑料：环境影响、检测技术和缓解策略

SustainE Pub Date : 2023-12-01 DOI: 10.55366/suse.v1i2.2

A. Akinsemolu

{"title":"Microplastics: Environmental Impacts, Detection Techniques and Mitigation Strategies","authors":"A. Akinsemolu","doi":"10.55366/suse.v1i2.2","DOIUrl":"https://doi.org/10.55366/suse.v1i2.2","url":null,"abstract":"Since the development of the first synthetic plastic with the potential for mass production in 1907, plastic has gone from a wonder solution in the packaging, building and construction, electrical and electronics, consumer products, and transportation industries to an environmental and sustainability hazard. Over the past decade, global concern over the impact of plastic pollution has extended to microplastics. Though small in size (1mm-5mm), microplastics are causing extensive damage to the natural environment. They have been isolated as contaminants in soil, tap water, oceans and their ecosystems, plants, animals, and human beings. As microplastics continue to accumulate in different ecosystems, research and studies on their impact on the environment, ways of detecting them, and strategies to prevent their accumulation in the environment are on the rise in efforts to understand their biological and ecological implications. This paper reviews existing knowledge on the environmental impacts of microplastics, their detection techniques, and mitigation strategies. The occurrence of microplastics in marine environments, on land, and in plant, animal, and human cells will be elucidated. Different analytical methods used for the sampling and characterization of microplastics in the environment will be highlighted and current and potential methods for the mitigation of the threat the element poses to the environment discussed. The synthesis of existing knowledge will be used to derive recommendations for future studies to fill knowledge gaps on microplastics","PeriodicalId":509955,"journal":{"name":"SustainE","volume":"54 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139192962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0