Kemin Industries is a nutritional ingredients manufacturer headquartered in Des Moines, Iowa, US. It was founded in 1961 by R.W. and Mary Nelson. It was called Chemical Industries - and was a family effort based on developing agricultural products and marketing them throughout the Mid-western United... read more States. These early products included mold inhibitors and flavors and grew to encompass a full line of ingredients for animal feeds. The name Kemin was adopted in 1968.