Indicator for sensing freshness of food and preparation method thereof method for monitoring freshness od food using the same

摘要

The present invention relates to an indicator for detecting freshness of a food, a method for manufacturing the same, and a method for identifying freshness of food using the indicator. More particularly, the present invention relates to an indicator for detecting freshness of a food, , And applying it to a packaging material to use it as a technology for determining the freshness of a food.