Effects of maturity stage and storage on cactus berry (Myrtillocactus geometrizans) phenolics, vitamin C, betalains and their antioxidant properties

► We studied cactus berry fruit at different maturity stages and after storage. ► We assessed antioxidant activities of cactus berry phenols and vitamin C. ► Maturity and storage reduce phenolics, vitamin C and antioxidant activities. ► Beta cyanins increase as fruit matures and after storage. ► Due to the antioxidant properties cactus berries could contribute to health.