Karaktärisering av nutrienter och antinutrienter i havreråvara samt havreprodukter

Oat drink is nowadays a popular vegan drink as a substitute for cow's milk. Interest in plant-based food products has increased both in a health perspective and an environmental perspective. Therefore, there is also an increased interest in investigating the content of the vegan drink but also the impact of the manufacturing process regarding nutrients and antinutrients. Nutrients are needed for metabolism while antinutrients have an ability to block the absorption of minerals in the gastrointestinal tract. Oats (Avena sativa L.) are popular to produce plant-based food products because oats as a raw material containing a lot of unsaturated fatty acids, vitamins, dietary fibers, phytochemicals and high nutritional value. The aim of the study is to get knowledge about the content of nutrients and anti-nutrients in raw materials, samples from the production line such as enzyme-treated oats and mixed oats, the end product oat drink and oat fiber residue product when produce an oat drink. Also get knowledge of the impact of these nutrients and anti-nutrients during the production line. To study the levels of nutrients and antinutrients, different methods were applied specifically for the specific analyte. The nutrients were analyzed as follows; choline and betaine with a separation of the compounds using a HILIC chromatography column ((alternative high performance liquid chromatography (HPLC)) and detected by mass spectrometry (MS), fiber by a gravimetric method, resistant starch by measuring the content of D-glucose in a spectrophotometer, the minerals calcium and iron by atomic absorption spectrometry (AAS). The anti-nutrient phytate was analyzed by measuring the phosphorus content in a spectrophotometer. This study shows that the content of nutrients and antinutrients was affected relatively little during the first steps of the process line. The levels of nutrients and antinutrients in the oat fiber residue product stand out the most compared to the other samples. Both that it is much higher and lower ...