Agronomic, molecular and antioxidative characterization of red- and purple-pericarp rice (Oryza sativa L.) mutants in Taiwan

► NaN3-induced mutation can be used to improve the quality traits of rice variety. ► NaN3-induced mutation affects the endosperm type and phytochemicals in pigmented mutants. ► Non-waxy type Mutant M-69 can be used as a staple food. ► Mutant M-69 can also be used to produce health-promoting by-products.