1. Nafferton Ecological Farming Group, Newcastle University, Nafferton Farm, Stocksfield, Northumberland NE43 7XD, UK
2. Arla Foods, Sønderhøj, Denmark
3. Aarhus University, Faculty of Agricultural Sciences, Department of Food Science, Tjele, Denmark
4. Research Station Agroscope Liebefeld-Posieux, ALP, Berne, Switzerland
5. Granarolo SpA., Bologna, Italy