1. Department of Food and Nutritional Sciences, National University of Ireland, Cork, Ireland.
2. National Food Biotechnology Centre, National University of Ireland, Cork, Ireland.
3. Department of Anatomy, National University of Ireland, Cork, Ireland.
4. Statistical Laboratory, Department of Statistics, National University of Ireland, Cork, Ireland.
5. Corresponding author. Phone: +353-21-4902064. Fax: +353-21-4270213. E-mail: e.arendt@ucc.ie