Feeding the world’s growing population in a sustainable way is no easy task. That’s why scientists are exploring options for transforming fruit and vegetable byproducts—such as peels or pulp discarded during processing—into nutritious food ingredients and supplements. Now, researchers reporting in ACS’ Journal of Agricultural and Food Chemistry have shown that blueberry and persimmon waste can be made into antioxidant-rich powders that might have beneficial effects on gut microbiota.