Volume 17 Issue 3
Sep.  2024
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Article Navigation >  Water Science and Engineering  > 2024  >  17(3): 266-273
Li-xiao Ni, Yuan-yi Fang, Cun-hao Du, Jia-jia Wang, Cheng-jie Zhu, Chu Xu, Shi-yin Li, Jian Xu, Xu-qing Chen, Hua Su. 2024: Microbial community diversity during algal inhibition using slow-release microcapsules of tea polyphenols. Water Science and Engineering, 17(3): 266-273. doi: 10.1016/j.wse.2024.05.004
Citation: Li-xiao Ni, Yuan-yi Fang, Cun-hao Du, Jia-jia Wang, Cheng-jie Zhu, Chu Xu, Shi-yin Li, Jian Xu, Xu-qing Chen, Hua Su. 2024: Microbial community diversity during algal inhibition using slow-release microcapsules of tea polyphenols. Water Science and Engineering, 17(3): 266-273. doi: 10.1016/j.wse.2024.05.004
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Microbial community diversity during algal inhibition using slow-release microcapsules of tea polyphenols

doi: 10.1016/j.wse.2024.05.004

  • a. Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education, Hohai University, Nanjing 210098, China;

  • b. College of Environment, Hohai University, Nanjing 210098, China;

  • c. School of Environment, Nanjing Normal University, Nanjing 210024, China;

  • d. River and Lake Treatment and Water Resources Management Center, Wuxi 214071, China

Funds:

This study was supported by the National Key Research and Development Program (Grants No. 2023YFC3208900 and 2023YFC3208904) and the Jiangsu Water Resources Conservancy Science and Technology Project (Grant No. 2022063).

  • Received Date: 2022-12-20
  • Accepted Date: 2024-02-24
    • Available Online: 2024-08-24
    Abstract
  • Harmful algal blooms (HABs) resulting from eutrophication pose a major threat to ecosystems and human health, necessitating effective control measures. Allelochemicals have shown their importance in slowing down algal proliferation due to their proven efficacy and low ecological impacts. In this study, allelopathy tea polyphenols (TPs) and β-cyclodextrin were combined to prepare slow-release algicidal microcapsules, and the diversity of microbial community in the algal inhibition process was analyzed. Results showed that TP slow-release microcapsules had strong algicidal activity. When against Microcystis aeruginosa within 20 d, their constant inhibitory rate was up to 99% compared to the control group. Microbial diversity decreased with an increase in algae density, and the species richness and diversity of algae increased under the stress of TP slow-release microcapsules. The redundancy analysis showed that the environmental factors with impacts on the abundance and diversity of bacterial communities in descending order were dissolved oxygen, pH, and temperature. This study provides a theoretical basis for the application of TP slow-release microcapsules to actual water.

     

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