“Evaluation of microbiological contamination of vegetables grown in aquaponic system with Nile tilapia (Oreochromis niloticus) infected by pathogenic bacteria”
Country of Study
Tanzania
Institution
Sokoine University of Agriculture
Expected Year of Completion
2026
Thematic Area
Health and Life Sciences
Education
Angelica’s PhD thesis is in Animal Sciences. She holds a Master’s degree in Aquatic Biology and Coastal Ecosystems from Eduardo Mondlane University. Currently a Lecturer at Eduardo Mondlane University, she is set to complete her PhD studies at Sokoine University of Agriculture in 2026
Research Summary
Angelica’s research focuses on food safety in aquaponic systems, specifically the risks of microbiological contamination in vegetables grown in systems with tilapia infected with pathogenic bacteria. While aquaponics is a growing food production method, the presence of harmful bacteria in the system—especially from fish excrement—poses significant foodborne risks, particularly as many of the vegetables are consumed raw. Angelica’s study investigates how tilapia, when infected with Escherichia coli or Vibrio cholerae, can serve as hosts for these pathogens, potentially contaminating the plants. By using DNA extraction, PCR, and sequencing, the research will track the microbial diversity in tilapia and assess contamination in the system. A key aspect of her work is evaluating the use of probiotics as a sustainable solution for controlling these pathogens without harming the system’s beneficial microorganisms. With the aim of enhancing food safety in aquaponic systems, Angelica’s research seeks to develop control measures to reduce contamination, ensuring safer food production practices and minimizing public health risks from foodborne infections.
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