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Which of the following TTI is based on polymerization reaction?

(a) 3M Monitor Mark

(b) Electronic nose

(c) Vitsab Single Dot Label (TTI)

(d) LifeLines Fresh-Check

This question was posed to me in an interview for job.

I'm obligated to ask this question of Intelligent Packaging Systems topic in portion Modern Packaging Techniques of Food Packaging Technology

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The correct answer is (d) LifeLines Fresh-Check

Best explanation: LifeLines Fresh-Check is based on polymerization.  It is based on the property of distributed di-acetylene crystals to polymerize through a lattice-controlled solid state reaction proceeding via 1,4 addition polymerization & resulting in high color polymer.

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