Food freshness indicator ink and method for producing food freshness indicator ink

摘要

A food freshness indicator ink and a method for producing food freshness indicator ink, the food freshness indicator ink comprising varnish occupying 90-98% of the total, and the varnish is at least 1 which is 5-25% of the total amount of varnish Including a seed film-forming resin or at least one vinyl resin or mixtures thereof, a plasticizer additive that is 10-25% of the amount of resin, and a solvent that is 50-75% of the total amount of varnish, and the whole 2 to 10% of the metal salt. [Selection] Figure 2