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The use of antibiotics is not permitted in Switzerland; moreover, no other medication exists to combat European foul brood. Hives with symptoms must therefore be destroyed in order to limit the outbreak, and the contaminated material must be sanitised. Since prevention is the best cure, early detection is desirable. Numerous studies have been undertaken and documents have been created at the Swiss Bee Research Centre and elsewhere to draw the attention of beekeepers to these problems and inform them about the causes and the control measures to be implemented.

Merkblatt zur erkennung von Bienenbrutkrankheiten (German (PDF, 357 kB, 18.10.2017) and French (PDF, 226 kB, 02.02.2017))
M. Tschumi (2011)

Impact of cheese milk cold storage on milk coagulation properties, calcium contents, and cheese yield.

Institutional Repository Agroscope

Guggisberg D., Loosli S., Blaser C., Badertscher R., Schmidt R.

Impact of cheese milk cold storage on milk coagulation properties, calcium contents, and cheese yield.

International Dairy Journal, 134, 2022, 1-9.

Téléchargement anglais (1491 kB)

Résumé:

This study evaluated the impact of storage conditions (time, 0-48 h; temperature, 4-16°C) of raw cheese milk on coagulation properties using diffusion wave spectroscopy. Specifically, rennet coagulation time (RCT) and curd firmness were affected by storage time and temperature. At 4-8°C, the RCT increased with the storage time 24-48 h compared with the control, while curd firmness decreased. Cheese yield decreased remarkably at 8°C and 24 h. At 12°C, only the RCT increased at 48 h, while curd firmness decreased remarkably. A different finding was discovered at 16°C: after a small RCT increase at 24 h, a significant decrease at 48 h was found, even though the pH was constant. Conversely, curd firmness was not significantly affected. Parallel to this study, free Ca2+ was analysed during cold storage, and the results were compared with total calcium analysis in whey.

ISSN Print 0958-6946
ISSN en ligne: 0958-6946
Digital Object Identifier (DOI): https://doi.org/10.1016/j.idairyj.2022.105465
ID publication (Code web): 50097 Envoyer par e-mail

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Impact of cheese milk cold storage on milk coagulation properties, calcium contents, and cheese yield.