The headline “fruits and vegetables diminished in their nutritional quality” appeared in recent years in the media. The claimed quality loss was supposedly related to changes in agricultural practice. The comparison of contents of nine minerals and eleven vitamins of the five most important locally produced fruits as published in three different food composition databases suggested that hardly any changes occurred during the last 20 to 40 years. An apparent significant reduction was indicated for magnesium (-3%) and increases were found for folic acid (168%) as well as vitamin C (19%). However, these changes may be related to anomalies of sampling or analyses. Fruit production has undergone many changes in the last four to five decades. Though no detrimental effects on nutritional quality of fruits could be deduced. In modern diet fruits continue to provide adequate quantities of minerals and vitamins as in the past.
Metschnikowia pulcherrima is a naturally occurring yeast with applications in agriculture, the food industry and biotechnology. Agroscope is investigating this yeast in particular with regard to biocontrol applications in plant protection.
Soya-, cereal-, seed- or nut-based plant drinks are consumed increasingly frequently as milk substitutes. Agroscope researchers have studied the macro- and micronutrients in these drinks and have identified major differences between the plant drinks themselves as well as in comparison with milk.
Cheese varieties from Switzerland are characterised according to various criteria. Agroscope analysed the free volatile carboxylic acids in ten cheese varieties and demonstrated that the latter are suitable for characterisation and differentiation.