For the layman, this is a simplified explanation of what I researched:
Melamine is a nitrogen-based compound used in industrial and commercial plastics. This chemical can cause kidney damage. This toxic substance was found in pet food in May 2007 which was exported to the
Melamine, by far is the best candidate to give a product an artificial high protein content, because it is high in nitrogen (66% by weight), non volatile (does not explode) and dirt cheap. It is an adulterated low quality wheat gluten used to pass off as high protein.in an effort by unscrupulous manufacturers to market their products.