Background to CDNO


Graham King and Liliana Andrés initiated the search for standardized controlled vocabularies relating to dietary nutrition components in 2017. This was prompted by the need to increase the uniformity of descriptors for the curation of crop trait data associated with plant genetic resources used in pre-breeding analysis at Southern Cross University. The initial aim was to formalise and extend the dietary nutrition framework Razlin Azman Halimi had developed whilst working on legume nutritional composition with Graham King (Azman Halimi et al., 2019).

Liliana found that the only ontology available to describe crop trait data was the Crop Ontology (CO) (Andrés-Hernández et al., 2021). However, the CO has separate trait dictionaries for each of up to 30 crops, and did not meet the requirements in terms of class reuse and standardization associated with the Open Biological Biomedical Ontology (OBO) principles. The Crop Dietary Nutrition Ontology (CDNO) was first proposed to represent dietary nutritional data derived from plant structures and quantified by analytical methods (Andrés-Hernández et al., 2020). Soon after the first release of CDNO, the scope was generalised beyond crops to encompass the nutritional attributes assocaited with any material entity.

The development of CDNO has benefited from extensive colloraboration with a range of ontologies and guidance from colleagues around the world.  Team CNDO is expanding, along with growing interest in the use of formalised controlled vocabularies relating to diet and nutrition.

Release history

Feb 2021 - Crop Dietary Nutrition Ontology, first release

April 2020 - Compositional Dietary Nutrition Ontology, first release

Sept 2020 - Compositional Dietary Nutrition Ontology, update