The MOBILES consortium has representation at the 20th International Conference on Electroanalysis (ESEAC 2026). Slađana Đurđić will highlight new electrode materials and aptamer‑based recognition strategies enabling faster and more accessible detection of biological contaminants, including Bacillus cereus spores.
rGO/La₂O₃‑Based Electrochemical Aptasensor for the Detection of Bacillus cereus Spores
Slađana Đurđić, University of Belgrade
Bacillus cereus spores are a persistent challenge for food safety and public health due to their exceptional resistance and ability to survive harsh environmental conditions. Rapid and reliable detection is essential for preventing contamination events, yet existing methods are often too slow or complex for routine monitoring. In this presentation, Slađana Đurđić introduces a new electrochemical aptasensor designed to provide a fast, sensitive, and practical solution for detecting B. cereus spores.
The sensor is built on a reduced graphene oxide/lanthanum oxide (rGO/La₂O₃) nanocomposite, which enhances the electrochemical performance of a screen‑printed carbon electrode. An aptamer specific to B. cereus spores is immobilized on the modified surface, enabling selective recognition and a clear analytical response. The platform demonstrates a low detection limit, strong stability, and reliable performance across relevant concentration ranges.
Importantly, the aptasensor was successfully validated in spiked tap water, confirming its potential for real‑world application in food and environmental monitoring. This work contributes to the MOBILES mission by advancing next‑generation biosensing tools capable of supporting rapid, on‑site detection of microbial contaminants.
We invite ESEAC attendees to join the session, meet Slađana Đurđić, and explore how innovative electrode materials and aptamer‑based strategies can advance rapid microbial detection.
20th International Conference on Electroanalysis
