Waste from making purple corn chips yields a natural dye, supplements, kitty litter

The more colorful a food, the more nutritious it probably is. For example, purple corn contains compounds associated with a reduced risk of developing diabetes and heart disease. The cobs contain the same compounds but are typically thrown out. Now, researchers report a step-wise biorefinery approach that uses the whole cob, producing a dye and a possible nutraceutical with the pigments, and an animal litter with the left-overs.

source https://www.sciencedaily.com/releases/2021/03/210324113342.htm