US renderer and renewable diesel producer Darling Ingredients has acquired waste collection and recycling start-up Valley Proteins for about US$1.1bn, Reuters wrote.

The acquisition would provide Darling Ingredients with additional low carbon feedstock to produce renewable diesel and potentially sustainable aviation fuel (SAF), the company was quoted as saying in the 28 December report.

According to its website, Darling Ingredients serves the agri-food industry and reduces food waste by collecting and repurposing animal-based co-products and other natural materials.