Transfer of Orally Administered Terpenes in Goat Milk and Cheese

  • Poulopoulou, I. (Department of Nutritional Physiology and Feeding, Faculty of Animal Science and Aquaculture, Agricultural University of Athens) ;
  • Zoidis, E. (Department of Nutritional Physiology and Feeding, Faculty of Animal Science and Aquaculture, Agricultural University of Athens) ;
  • Massouras, T. (Department of Dairy Science, Faculty of Food Science and Technology, Agricultural University of Athens) ;
  • Hadjigeorgiou, Ioannis (Department of Nutritional Physiology and Feeding, Faculty of Animal Science and Aquaculture, Agricultural University of Athens)
  • Received : 2012.03.27
  • Accepted : 2012.05.18
  • Published : 2012.10.01


The objective of the present study was to investigate the relationships between terpenes… intake and their presence in animal tissues (blood and milk) as well as in the final product (cheese). Eight dairy goats were divided in two balanced groups, representing control (C) and treatment (T) group. In T group oral administration of a mixture of terpenes (${\alpha}$-pinene, limonene and ${\beta}$-caryophyllene) was applied over a period of 18 d. Cheese was produced, from C and T groups separately, on three time points, twice during the period of terpenes… oral administration and once after the end of experiment. Terpenes were identified in blood by extraction using petroleum ether and in milk and cheese by the use of solid phase micro-extraction (SPME) method, followed by GC-MS analysis. Chemical properties of the milk and the produced cheeses were analyzed and found not differing between the two groups. Limonene and ${\alpha}$-pinene were found in all blood and milk samples of the T group after a lag-phase of 3 d, while ${\beta}$-caryophyllene was determined only in few milk samples. Moreover, none of the terpenes were traced in blood and milk of C animals. In cheese, terpenes' concentrations presented a more complicated pattern implying that terpenes may not be reliable feed tracers. We concluded that monoterpenes can be regarded as potential feed tracers for authentification of goat milk, but further research is required on factors affecting their transfer.


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