Evolution of anticarcinogenic substance in dietary fibre powder from cabbage outer leaves during drying

► Sulforaphane formation took place at cabbage temperature in the range of 25-53.5 °C. ► Formation and degradation rates of sulforaphane were accelerated by higher drying temperatures. ► Sulforaphane evolution was a function of the cabbage temperature during drying. ► A semi-empirical model was proposed to predict sulforaphane evolution during drying.