Color cards identify damaged food Science Daily said smart label color will identify milk, green vegetables, beverages, medicines and many other perishable products can continue to use or not without opening the packaging. According to experts at the University of Beijing, China, the smart color label typed gel, the size as a corn, contain the nano metal included vitamin C, acid acetic, agar, lactic acid. When they attached on packaging, they will change color according to the status or level of the product damage. Red or red-yellow label corresponding to the fresh or usability. Orange-yellow or green label is a sign that the product damaged and can not be used anymore. Information on product packaging that also can be used in 14 days when they preserved the refrigerator but the color label turned yellow, the safety is only half. In this case, the expiry date will be only 7 days. The use of this label can solve problems related to the expiry date of the packaged product. Even the manufacturers, the grocery store or the user does not know their food exposed to high temperatures or not. Meanwhile, here is the cause unexpected damage to many products.
Posted on: Mon, 24 Mar 2014 01:20:48 +0000
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