Darling Ingredients, Inc. engages in the development and production of natural ingredients from edible and inedible bio-nutrients. Its segments include Feed Ingredients, Food Ingredients and Fuel Ingredients. Read More The Feed Ingredients segment includes ingredients business such as fats and proteins, used cooking oil, trap grease and food residuals collection, the Rothsay ingredients, and the ingredients and specialty products. The Food Ingredients segment comprises gelatin, natural casings and meat by-products, and specialty products activities. The Fuel Ingredients segment consists of biofuel and bioenergy services. The company was founded in 1882 and is headquartered in Irving, TX.