N-Hexanoyl-L-Homoserine Lactone Promotes the Thickening of Microalgal Biofilm
Regulating the proliferative growth of algal biofilms is an important approach to address the challenges of attachment-based algal cultivation.In this study,Chlorella vulgaris was used to investigate the influence of N-hexanoyl-L-homoserine lactone(C6-HSL)on the proliferative growth performance of algal biofilms on the carrier surface.The results demonstrate that the addition of C6-HSL during the growth phase accelerates the accumulation rate of biofilm biomass and increases the upper limit of biofilm biomass during the stable period.C6-HSL promotes the secretion of extracellular polymeric substances(EPS)by Chlorella vulgaris,thereby enhancing algal metabolism and altering the surface structure of the algal biofilm,resulting in improved proliferative growth.Additionally,C6-HSL enhances the absorption capacity of algal biofilms for carbon,nitrogen,and phosphorus,thereby enhancing their pollutant removal capability.These research findings provide support for the utilization of signal molecules in regulating the operation of algal biofilm systems.
Signal moleculeMicroalgal biofilmExtracellular polymers
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维普
