Work

Determination of Escherichia coli in Raw and Pasteurized Milk Using a Piezoelectric Gas Sensor Array

Year: 2025

Type: conference-paper

Abstract: The importance of assessing the microbiological safety of food products is beyond doubt, which is also true for milk and dairy products. The goal of this work was to evaluate the changes in the composition of the gas phase in milk based on signals from chemical sensors to predict the quantity of the bacteria in the milk samples. The gas phase in raw milk samples and samples during pasteurization, as well as for a standard (a model aqua solution of macronutrients and minerals), was studied using an array of sensors with polycomposite coatings, including those contaminated with E. coli bacteria. Assessment of microbiological indicators was carried out according to GOST in parallel with the gas-phase analysis. The applicability of the results obtained on model systems was assessed using milk samples, including those containing other types of pathogenic microorganisms (Staphylococcus aureus, Klebsiella spp., etc.). It was found that the obtained models can be used to assess the presence and quantity of E. coli in milk at the pasteurization stage.

DOI: 10.3390/engproc2025087031

Authors: Anastasiia Shuba, Ruslan Umarkhanov, Ekaterina Bogdanova, Ekaterina Anokhina, Inna Burakova

Institution: Voronezh State University of Engineering Technologies

Language: English

Topic: Advanced Chemical Sensor Technologies

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Zero hunger

Open Access status: gold

Funder: Russian Science Foundation

Award: G3462218052