Scientists from a research team in the USA and Brazil have developed a cardboard sensor capable of measuring the metabolic activity of probiotics in fermented food products. The team developed the sensor using standard cardboard and laser engraving, making the cardboard electrically conductive. Additionally, gold nanoparticles were added to the sensor, improving its reaction. This resulted in lower material resistance, allowing the sensor to detect the metabolic activity of bacteria through redox reactions.
Probiotics, which are live microorganisms found in fermented food products, can offer many health benefits, such as promoting a healthy gut microbiome and lowering cholesterol levels. However, the effectiveness of probiotics depends on their metabolic activity and interaction with the body. The new sensor provides a simple and inexpensive way to measure the activity of live bacteria in probiotic products.
The scientists tested the sensor on popular yogurt and probiotic beer. They found that the sensor accurately determined the metabolic activity of microorganisms in the samples, with unfiltered IPA beer showing higher activity compared to yogurts. However, it is important to note that the sensor only measures overall metabolic activity and does not provide information about specific types of activity or potential health effects.
Probiotics have gained popularity as dietary supplements, but there are still doubts regarding the regulation and effectiveness of these products. The proposed sensor offers a potential solution for detecting live bacteria in probiotic products, making it easy to assess their activity. This technology could find applications in fields such as healthcare, where monitoring bacterial activity is crucial.
FAQ:
1. What are probiotics?
Probiotics are live microorganisms that provide health benefits, especially to the gut.
2. How does the cardboard sensor work?
The cardboard sensor was created using standard cardboard and laser engraving, making it electrically conductive. Gold nanoparticles were also used to improve its reaction.
3. What does the sensor measure?
The sensor measures the overall metabolic activity of bacteria in probiotic products.
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