The influence of nutrients and other food constituents, such as dietary fibre components, catechin and phytic acid, on resistant starch (RS) formation was systematically investigated. This investigation was carried out under standardized gelatinization conditions by using a high pressure autoclave (HPA). Except for insoluble dietary fibre constituents (cellulose and lignin), all the tested food ingredients reduced the formation of RS. Calcium ions, potassium ions and catechin showed the highest reduction of RS formation, while the nutrients studied (albumin, olive oil and sucrose) as well as phytic acid affected it to a lesser extent. These results were not significantly changed by varying amounts of the studied dietary components.We acknowledge financial support for the research from Comision Interministerial de Ciencia y Tecnologia (project ALI-0278).Peer Reviewe