期刊
FERMENTATION-BASEL
卷 8, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/fermentation8040176
关键词
red tide algae; fermentation broth; algae inhibitors; Bacillus sp
资金
- National Key Research & Development Plan Strategic International Scientific and Technological Innovation Cooperation [2016YFE0202100]
- National Natural Science Foundation of China [41573075]
- Fujian Provincial Water Conservancy Technology Project [SC-292, DH-1558, 21NB000922, MSK202202]
- Marine Red Tide Early Warning and Prevention in Pingtan coastal area [PT2021006]
The fermentation processes of algicidal bacteria offer a promising and eco-friendly approach for controlling harmful algae blooms (HABs). This study analyzed the microbial fermentation of algicidal bacterium Ba3 and its potential ability to produce algicidal compounds. The results show that the fermentation products have the potential to control dinoflagellate blooms, providing an encouraging basis for large-scale fermentation production and the control of red tide outbreaks.
The fermentation processes of algicidal bacteria offer an eco-friendly and promising approach for controlling harmful algae blooms (HABs). The strain Ba3, previously isolated and identified as Bacillus sp., displays robust algicidal activity against HABs dinoflagellate in particular. Microbial fermentation products have also been found to provide metabolites with multiple bioactivities, which has been shown to reduce harmful algae species' vegetative cells and thus reduce red tide outbreaks. In this study, the microbial fermentation of algicidal bacterium Ba3 was analyzed for its potential ability of algicidal compounds. A treatment time increased the algicidal efficiency of the fermentation products against Prorocentrum donghaiense (91%) and Alexandrium tamarense (82%). Among the treatment groups, the changing trend for the 2% treatment group was faster than that for the other treatments, showing that the inhibition rate could reach 99.1% in two days. Active components were separated by organic solvent extraction and macroporous resin, and the molecular weight of the active components was analyzed by LC-MS. The result shows that the microbial fermentation products offer a potential, not practical use for controlling the outbreaks of dinoflagellate blooms. As a result of its potential application for inhibiting HABs, these findings provide an encouraging basis for promoting large-scale fermentation production and the controlling the outbreaks of red tide.
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