Sugar content and firmness are two important factors determining eating quality of apples. Sensory analysis with a trained panel confirmed that sweetness, sourness, fruitiness and firmness can be predicted by instrumental measurements such as total soluble solids (refractometer), titratable acidity and firmness measurements by penetrometer. Tests with consumers indicated that Golden Delicious of acceptable eating quality should attain a minimum of 12°Brix for total soluble solids and a minimum reading of 4.5 kg/cm2 by penetrometer. A survey by the Swiss Fruit Union during the storage seasons 1997/98 and 1998/99 indicated that about 30 % and 12 %, respectively, of the Golden Delicious offered to the consumer have not met these minimum requirements.
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.