Yan Q, Li Y, Chen J, Du G C
Key Laboratory of Industrial Biotechnology, Ministry of Education, Southern Yangtze University, Wuxi 214036, China.
Sheng Wu Gong Cheng Xue Bao. 2001 Sep;17(5):485-90.
Polyhydroxylkanoates(PHAs) are a class of polyesters produced as reserve materials by a large number of microorganisms under metabolic stress. The most fascinating feature of PHAs is its degradability, and which is supposed to take place of the traditional plastics made from petroleum in the future. PHAs are divided into two classes: short-chain-length PHAs(scl-PHAs) and medium-chain-length PHAs. mcl-PHAs is more welcome owing to its more wide crystallinity and higher extension to break than scl-PHAs, especially when some kind of new functional groups were incorporated into the side chain of the polyester. Since Psedumonas oleovorans is the most typical microorganism to produce mcl-PHAs, here the author summarized how P. oleovorans synthesize the mcl-PHAs and the production of mcl-PHAs by fermentation and give some of the idea about the future research of this field.
聚羟基脂肪酸酯（PHA）是一类聚酯，在代谢应激条件下由大量微生物作为储备物质产生。PHA最吸引人的特性是其可降解性，有望在未来取代传统的石油基塑料。PHA分为两类：短链长度PHA（scl-PHA）和中链长度PHA。由于中链长度PHA比短链长度PHA具有更广泛的结晶度和更高的断裂伸长率，特别是当某些新型官能团被引入到聚酯侧链中时，中链长度PHA更受欢迎。由于食油假单胞菌是生产中链长度PHA最典型的微生物，在此作者总结了食油假单胞菌如何合成中链长度PHA以及通过发酵生产中链长度PHA，并给出了该领域未来研究的一些想法。
