October 17, 2023Ellen MacArthur Foundation co-winner Elk Packaging Create a compostable polyhydroxyalkanoate (PHA) made from agricultural byproducts and food wasteCalifornian startup Full Cycle Bioplastics, along with partners Elk Packaging and Associated Labels and Packaging, have created a compostable polyhydroxyalkanoate (PHA) made from agricultural byproducts and food waste.