胞外蛋白对微生物聚集体的形成及其特性的影响

胞外多聚物是微生物聚集体(污泥絮体、生物膜和颗粒污泥等)的主要成分,在微生物聚集体的形成及其结构稳定过程中起关键作用.胞外蛋白作为胞外多聚物的主要组分之一,在微生物絮凝和聚集过程中的作用日益受到关注.蛋白分析技术的发展和应用为胞外蛋白的深入研究提供了良好的平台.本文综述了胞外蛋白在微生物聚集体中的种类和分布，以及在絮凝、沉降、传质、吸附和脱水等性能方面的作用,并对胞外蛋白的研究和应用进行了展望.

Effects of extracellular protein on the formation and properties of microbial assemblages: A review

Extracellular polymeric substance (EPS), as a major component of microbial assemblages, e.g., activated sludge, biofilm and particulate sludge, etc., plays a crucial role in the formation and structural maintenance of microbial assemblages. Extracellular protein is a main constituent of EPS, and its functioning in microbial flocculation and aggregation has being paid more and more attention. The development and application of protein analytical techniques provide a good platform for the further study of extracellular protein. The paper reviewed the kind and distribution of extracellular protein in microbial assemblages and the roles of the extracellular protein in flocculation, sedimentation, adsorption, mass transferring, and dewatering. The prospects of the future study and applications of extracellular protein were also put forward.