The ewe’s milk is much lauded for its high orotic acid content. This is sought after as a miracle cure and a universal drug. Although reliable data on this subject can not be found in the scientific literature, the myth of ewe’s milk particularly rich in orotic acid still persists. For this reason, the Agroscope Liebefeld-Posieux research station ALP has analyzed and compared the orotic acid contents of cow’s, goat’s and ewe’s milk. The determination of orotic acid is carried out by UV detection after separation of the organic acids by means of HPLC. Cow’s milk contains the highest levels of orotic acid followed by ewe’s milk which contains slightly more than goat’s milk. Seasonal fluctuations were noted: in autumn (September), the orotic acid content is higher than in spring (March) or summer (June). No winter samples were analyzed. The values for cow’s, ewe’s and goat’s milk were 6,63, 1,53, 1,08 mg/100 g respectively in March and in the same order of magnitude at 6,33, 1,77, 1,27 mg/100 g in June. Higher concentrations were found in the three types of milk in September (7,55, 3,22 and 2,48 g/100 g).
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.