End of the best before date? Food label made from gelatine becomes bumpy when meat is

[ahlam1399]

Bump Mark (pictured) was designed by London student Solveiga Pakstaite. It contains gelatine and as the food begins to decay, so does the gelatine to reveal a bumpy layer underneath.

أكثر... ( http://www.dailymail.co.uk/sciencetech/article-2710689/End-best-date-Food-label-gelatine-bumpy-meat-**-longer-safe-eat.html?ITO=1490&ns_mchannel=rss&ns_campaign=1490 )