A special type of film made with certain chemicals and tiny zinc particles can stop bacteria from growing, and how well it works depends on how many zinc particles are used.

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Evidence from Studies

Supporting (1)

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Development of (polyvinylpyrrolidone/chitsoan/citric acid)/(zinc oxide‐nanoparticles) bionanocomposite films and their applications in biodegradation and antimicrobial activity

Cross-Sectional Study

In Vitro

The study tested the exact same material as the claim and found it kills both types of bacteria, with bigger effects when more zinc oxide nanoparticles are added, just like the claim says.

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According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Development of (polyvinylpyrrolidone/chitsoan/citric acid)/(zinc oxide‐nanoparticles) bionanocomposite films and their applications in biodegradation and antimicrobial activity

Score: 3

DOI: 10.1002/pen.26558

Similar Assertions

When more zinc oxide nanoparticles are added to special films, they become better at killing germs, which you can see by bigger clear rings around the film where germs can't grow.

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