Darling Ingredients Inc.
A maker of sustainable ingredients, Darling collects animal by-products, used cooking oil, and bakery leftovers from slaughterhouses, restaurants, and bakeries, turning them into proteins and fats for animal feed and pet food, collagen and casings for food and pharma, and renewable diesel through its Diamond Green Diesel venture with Valero. Founded in Chicago in 1882 by Ira C. Darling to serve the meatpacking industry, it has been called the "original recycler" for repurposing what would otherwise go to waste, and its Rousselot brand makes collagen peptides used in supplements and beauty products.
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