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From 2012.igem.org

Revision as of 20:08, 17 September 2012 (view source) Ismael (Talk | contribs) ← Older edit		Revision as of 22:37, 18 September 2012 (view source) Ismael (Talk | contribs) Newer edit →
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	}		}
	.sticker2 {		.sticker2 {
-	left: 0px;	+	left: 350px;
-	top:300px;	+	top:550px;
	position:absolute;		position:absolute;
	width: 120px;		width: 120px;
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	}		}
	.Germination2 {		.Germination2 {
-	left: 150px;	+	left: 530px;
-	top:300px;	+	top:550px;
	position:absolute;		position:absolute;
	width: 120px;		width: 120px;

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Revision as of 22:37, 18 September 2012

The Food Warden is a system for detecting food spoilage. When a package of meat is saved after opening, a closed sticker containing Bacillus subtilis spores is activated by breaking the middle compartment (similar to activating a glow-in-the-dark stick), whereby Alanine and water are mixed with the spores to cause germination. When the germinated microbes come in contact with volatiles from rotting meat, a pathway is activated which results to the production of a pigment. When this happens, the consumer knows that he has to throw away the food.