聚羟基烷酸酯降解包装材料的生物合成及进展

Biosynthesis and Progress of Polyhydroxyalkanoates Degradable Packaging Materials

目的综述聚羟基烷酸酯(Polyhydroxyalkanoates,PHAs)的生物合成工艺、影响因素及其在包装工业领域的应用研究进展,以期优化其生产工艺、降低生产成本、提高PHAs的产量。方法通过对近年来国内外研究现状和研究成果的分析和总结,介绍PHAs的生物合成工艺、影响PHAs产量的主要因素及在包装方面的应用。结论好氧瞬时供料法合成的PHAs产量高于微好氧-好氧工艺;底物种类、C/N值、pH值、溶解氧浓度和合成温度对生物合成PHAs的产量和成分比例都有很大影响;PHAs作为可降解材料在包装领域具有广阔的应用前景,未来的重点研究方向是优化PHAs的合成工艺和影响因素,降低其生产成本,提高产量和产品性能。

The paper aims to overview the biosynthesis progress and influencing factors of polyhydroxyalkanoates(PHAs) and its application in packaging industry to optimize its production process, reduce its production cost and increase its production. By means of analysis and summary of the research status and achievements in recent years at home and abroad, the biosynthetic process, the main factors affecting PHAs production and its application in packaging were introduced. The yield of PHAs synthesized by aerobic instantaneous feeding method is higher than that by micro-aerobic-aerobic process. At the same time, the substrate type, C/N ratio, pH value, dissolved oxygen concentration and temperature have a great influence on the yield and composition of PHAs. In addition, as a degradable material, PHAs has a broad development space in the packaging field. Therefore, optimizing the synthesis process and influencing factors of PHAs, reducing its production cost, and enhancing the production and product performance are the key directions for concern in the future.