Question

Silver ion-based film is an example of _______

(a) oxygen scavenger

(b) antimicrobial agent releaser

(c) carbon dioxide emitter

(d) carbon dioxide adsorbent

This question was posed to me in unit test.

Question is from Active Packaging in Food topic in division Modern Packaging Techniques of Food Packaging Technology

Answer 1

Right answer is (b) antimicrobial agent releaser

For explanation: Silver ion-based film is an example of antimicrobial agent releaser. This film is an effective antimicrobial agent with very low human toxicity and it has been used in food containers. There are two mechanisms for antimicrobial action: one is controlling microbial growth by slow and controlled release (or migration) of the antimicrobial agents over the product shelf life. The other type is controlling microbial growth by contact without release of the antimicrobial agents, which are immobilized on the surface of the package.