Kumar Vinay, Lakkaboyana Sivarama Krishna, Tsouko Erminta, Maina Sofia, Pandey Muskan, Umesh Mridul, Singhal Barkha, Sharma Neha, Awasthi Mukesh Kumar, Andler Rodrigo, Jayaraj Iyyappan, Yuzir Ali
Ecotoxicity and Bioconversion Laboratory, Department of Community Medicine, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Thandalam 602105, India; Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India.
Department of Chemistry, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Avadi, Chennai 600062, India; Department of Chemical and Environmental Engineering (ChEE), Malaysia-Japan International Institute of Technology (MJIIT)-Universiti Technologi Malaysia, Jalan Sultan Yahya Petra, 54100 Kuala Lumpur, Malaysia.
Int J Biol Macromol. 2023 Apr 15;234:123733. doi: 10.1016/j.ijbiomac.2023.123733. Epub 2023 Feb 16.
The exponential increase in the use and careless discard of synthetic plastics has created an alarming concern over the environmental health due to the detrimental effects of petroleum based synthetic polymeric compounds. Piling up of these plastic commodities on various ecological niches and entry of their fragmented parts into soil and water has clearly affected the quality of these ecosystems in the past few decades. Among the many constructive strategies developed to tackle this global issue, use of biopolymers like polyhydroxyalkanoates as sustainable alternatives for synthetic plastics has gained momentum. Despite their excellent material properties and significant biodegradability, polyhydroxyalkanoates still fails to compete with their synthetic counterparts majorly due to the high cost associated with their production and purification thereby limiting their commercialization. Usage of renewable feedstocks as substrates for polyhydroxyalkanoates production has been the thrust area of research to attain the sustainability tag. This review work attempts to provide insights about the recent developments in the production of polyhydroxyalkanoates using renewable feedstock along with various pretreatment methods used for substrate preparation for polyhydroxyalkanoates production. Further, the application of blends based on polyhydroxyalkanoates, and the challenges associated with the waste valorization based polyhydroxyalkanoates production strategy is elaborated in this review work.
合成塑料使用量的指数级增长以及随意丢弃，由于石油基合成聚合物化合物的有害影响，已引发对环境健康的严重担忧。在过去几十年里，这些塑料制品堆积在各种生态位上，其碎片进入土壤和水体，显然已经影响了这些生态系统的质量。在为解决这一全球性问题而制定的众多建设性策略中，使用聚羟基脂肪酸酯等生物聚合物作为合成塑料的可持续替代品已获得发展势头。尽管聚羟基脂肪酸酯具有优异的材料性能和显著的生物降解性，但主要由于其生产和纯化成本高昂，仍无法与合成塑料竞争，从而限制了它们的商业化。使用可再生原料作为聚羟基脂肪酸酯生产的底物一直是实现可持续发展目标的研究重点领域。本综述旨在深入探讨利用可再生原料生产聚羟基脂肪酸酯的最新进展，以及用于聚羟基脂肪酸酯生产底物制备的各种预处理方法。此外，本综述还阐述了基于聚羟基脂肪酸酯的共混物的应用，以及基于聚羟基脂肪酸酯生产策略的废物资源化面临的挑战。
