Biofortified, selenium enriched, fruit and cladode from three Opuntia Cactus pear cultivars grown on agricultural drainage sediment for use in nutraceutical foods

► Salt/boron resistant, medicinal Cactus pear, grown in agricultural drainage sediment. ► Enriched in mineral nutrients, anticarcinogenic-selenium, phenolics and antioxidants. ► Selenium biofortified Opuntia is a unique chemotherapeutic, nutraceutical food crop.