Seasonal variation of fat composition in sheep’s milk from areas of central Italy

  • M. Carloni
  • D. Fedeli
  • T. Roscioni
  • R. Gabbianelli
  • G. Falcioni
Original Article


This study was conducted on sheep’s milk to determine the fat composition in flocks of different breeds (Suffolk, Fabrianese, Sopravvissana, Sarda) living in Marche region areas (central Italy). Samples were collected from December to July and the fatty acid profile, cholesterol content and lipid peroxidation status were analysed. The results show high levels of saturated fatty acids (SAT) for each period of the year considered. The amount of monounsaturated fatty acids (MUFA) is three to five times higher than polyunsaturated ones (PUFA). An increase in PUFA content is present in samples collected in May and July. The content of cis-9,trans-11- and trans-10,cis-12-CLA isomers increases in May, reaching the highest values in July. The results reported here are of importance since the conjugated linoleic acids (CLA) content in cheese will depend on the CLA content of milk itself and this should be taken into account due to the beneficial effects of CLA isomers on human health.


Sheep’s milk Fatty acids CLA Cholesterol Lipid peroxidation 


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  1. 1.
    Mens PL (1985) Proprietès physico-chimiques nutritionalles et chimiques (physico-chemical properties). In: Luquet FM (ed) Laits et produits latieres. Vache. Brevis. Chevre. [Milk and milk products from cows, sheeps and goats]. Apria, Paris, pp 349–367Google Scholar
  2. 2.
    Park YW (1994) Hypo-allergenic and therapeutic significance of goat milk. Small Rumin Res 14:151–161CrossRefGoogle Scholar
  3. 3.
    Scolozzi C, Martini M, Abramo F (2003) A method for identification and characterization of ewe’s milk fat globules. Milchwissensch 58:490–493Google Scholar
  4. 4.
    Haenlein GFW (1996) Nutritional value of dairy products of ewe and goat milk. In: Anifantakis EM (ed) Proceedings of the IDF/CIRVAL Seminar on the Production, Utilization of Ewe, Goat, Milk. International Diary Federation, Brussels, 9603, pp 159–179Google Scholar
  5. 5.
    Haenlein GFW (2001) Past, present and future perspectives of small ruminant research. J Dairy Sci 84:2097–2115CrossRefGoogle Scholar
  6. 6.
    Haenlein GFW (2004) Goat milk in human nutrition. Small Rum Res 9:27–36Google Scholar
  7. 7.
    Boza J, Sanz Sampelayo MR (1997) Aspectos nutricionales de la leche de chabra [Nutritional aspects of goat milk]. Ann Acad Cienc Vet Andalucìa Oriental 10:109–139Google Scholar
  8. 8.
    Sehat N, Rickert R, Massoba MM et al (1999) Improved separation of conjugated fatty acid methyl esters by silver ion-high-performance liquid chromatography. Lipids 34:407–413CrossRefGoogle Scholar
  9. 9.
    Cabiddu A, Decandia M, Addis M et al (2005) Managing mediterranean pastures in order to enhance the level of beneficial fatty acids in sheep milk. Small Rum Res 59:169–180CrossRefGoogle Scholar
  10. 10.
    Sanz Sampelayo MR, Chilliard Y, Schmidely CH, Boza J (2007) Influence of type of diet on the fat constituents of goat and sheep milk. Small Rum Res 68:42–63CrossRefGoogle Scholar
  11. 11.
    AOAC (1999) Official methods of analysis, 16th Edn. Association of Official Analytical Chemists, Gaithersburg, MDGoogle Scholar
  12. 12.
    Konings AWT (1984) Lipid peroxidation in liposomes. In: Gregoriadis G (ed.) Liposomes technology. CRC Press, Boca Raton, FL, pp 139–161Google Scholar
  13. 13.
    Folch J, Less M, Sloane-Stanley GH (1957) A simple method for the isolation and purification of total lipids from animal tissues. J Biol Chem 226:466–468Google Scholar
  14. 14.
    Searcy RL, Bergquist LM (1960) A new color reaction for the quantitation of serum cholesterol. Clin Chim Acta 5:192–199CrossRefGoogle Scholar
  15. 15.
    Morand-Fehr P, Fedele V, Decandia M, Le Frileux Y (2007) Influence of farming and feeding systems on composition and quality of goat and sheep milk. Small Rum Res 68:20–34CrossRefGoogle Scholar
  16. 16.
    Loor JJ, Herbein JH (1998) Exogenous conjugated linoleic acid isomers reduce bovine milk fat concentration and yield by inhibiting de novo fatty acid synthesis. J Nutr 128:2411–2419Google Scholar
  17. 17.
    Kriss-Etherton PM (1999) Monounsaturated fatty acids and risk of cardiovascular disease. Circulation 100:1253–1258Google Scholar
  18. 18.
    McGuire MA, McGuire MK (2000) Conjugated linoleic acid (CLA): a ruminant fatty acid with benefical effects on human health. J Anim Sci 77:1–8Google Scholar
  19. 19.
    Pariza MW, Park Y, Cook ME (2001) The biologically active isomers of conjugated linoleic acid. Progr Lipid Res 40:283–298CrossRefGoogle Scholar
  20. 20.
    Riserus W, Vessby B, Arnlov J, Basw S (2004) Effects of cis-9,trans-11 conjugated linoleic acid supplementation on insulin sensitivity, lipid peroxidation, and proinflammatory marker in obese man. Am J Clin Nutr 80:279–283Google Scholar
  21. 21.
    Nagao K, Yanagita T (2005) Conjugated fatty acids in food and their health benefits. J Biosci Bioeng 100:152–157CrossRefGoogle Scholar
  22. 22.
    Park Y, Storkson JM, Albright KJ et al (1999) Evidence that the trans-10,cis-12 isomer of conjugated linoleic acid induces body composition changes in mice. Lipids 34:235–241CrossRefGoogle Scholar
  23. 23.
    Sugano M, Tsujita A, Yamasaki M (1997) Lymphatic recovery, tissue distribution, and metaboliceffects of conjugated linoleic acid in rats. J Nutr Biochem 8:38–43CrossRefGoogle Scholar
  24. 24.
    Iversen SA, Cawood P, Madigan MJ et al (1984) Identification of a diene conjugated component of human lipid as octadeca-9,11-dienoic acid. FEBS Lett 171:320–324CrossRefGoogle Scholar
  25. 25.
    Badinga L, Greene ES (2006) Physiological properties of conjugated linoleic acid and implications for human health. Nutr Clin Pract 21:367–373CrossRefGoogle Scholar
  26. 26.
    Tricon S, Yaqoob P (2006) Conjugated linoleic acid and human health: a critical evaluation of the evidence. Curr Opin Clin Nutr Metab Care 9:105–110CrossRefGoogle Scholar
  27. 27.
    Dhiman TR, Nam SH, Ure AL (2005) Factors affecting conjugated linoleic acid content in milk and meat. Crit Rev Food Sci Nutr 45:463–482CrossRefGoogle Scholar
  28. 28.
    Nudda A, Mele M, Battacone G et al (2003) Comparison of conjugated linoleic acid (CLA) content in milk of ewes and goats with the same dietary regimen. Ital J Anim Sci 2[Suppl 1]:515–517Google Scholar

Copyright information

© Springer-Verlag Italia 2009

Authors and Affiliations

  • M. Carloni
    • 1
  • D. Fedeli
    • 2
  • T. Roscioni
    • 3
  • R. Gabbianelli
    • 2
  • G. Falcioni
    • 2
  1. 1.School of Advanced StudiesUniversity of CamerinoCamerinoItaly
  2. 2.Department of M.C.A. BiologyUniversity of CamerinoCamerino (MC)Italy
  3. 3.Camerino (MC)Italy

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