The nutrient data in NEVO originate from several data sources.

NEVO data sources

Preferably, food composition data should come from chemical analyses by accredited laboratories.  Other data sources include foreign food composition tables, scientific publications and food label information.

Missing values are filled in, if possible,  by deriving the composition from the ingredients of the food, by borrowing values from similar foods or by logical deduction, e.g. 'vegetable product: vit D = 0'. Some nutrients and energy are calculated based on other nutrients with a formula, e.g. vegetable protein=total protein-animal protein.

For each value, a reference is known. By clicking on the button 'product details', (the button with í') data on all available component per food is given in NEVO online.

The references and reference id's are available in  the document 'Specifications  of references in NEVO online 2019'.

Reference codes are different from NEVO online 2016, because of a different software system. A translation table from code 2019 to 2016 is available.