Dietary selenium intake in lactating dairy cows modifies fatty acid composition and volatile profile of milk and 30-day-ripened caciotta cheese
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The aim of this study was to investigate the effect of dietary selenium supplementation of dairy cows on chemical–nutritional and aromatic properties of milk and related caciotta cheese. 34 Friesian cows were randomly assigned to two groups. The control group (CG) received a conventional feeding strategy, while the experimental group (EG) was fed with a daily selenomethionine supplementation. Dietary selenium integration did not induce variations on milk yield and composition, but induced a marked decrease in somatic cell count. Both in milk and cheese the EG samples showed an increase in linoleic and rumenic acids. The volatile profile of dairy products was also positively affected by dietary selenium intake, with a decrease in concentration of hexanoic acid, hexanal, heptanal, and an increase in ethyl hexanoate, δ-octalactone, δ-decalactone, 2-heptanone, and 2-nonanone. Such findings could contribute to the production of cheeses with interesting nutritional and organoleptic properties, although further sensorial evaluations should be performed to deeply investigate the consumer acceptability.
KeywordsSelenium Dairy cow Fatty acid Oxidative stability Volatile compound
Authors are grateful to “Ansape Company” (Raiano (AQ), Italy), for the kind cooperation.
This study is part of the project “Innovazione della filiera bovina da latte per produzioni lattiero-casearie ad elevato contenuto salutistico ed ecosostenibile” supported by a grant from Rural Development Plan 2007-2013-MISURA 1.2.4, Regione Abruzzo (Italy), Project manager: Giuseppe Martino.
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Conflict of interest
The authors declare that they have no conflict of interest
Compliance with Ethics requirements
The authors state that the present study complies with the ethical requirements.
- 9.Caja G, Flores AA, Salama K, Salado J, Bertin G (2007) Organic selenium (Sel-Plex®) improves selenium content in milk and cheese in dairy goats. J Dairy Sci 90:356Google Scholar
- 12.Doreau M, Meynadier A, Fievez V, Ferlay A (2016) Ruminal metabolism of fatty acids: modulation of polyunsaturated, conjugated, and trans fatty acids in meat and milk. In: Handbook of Lipids in Human Function. AOCS Press, pp 521–542Google Scholar
- 13.AOAC International (1990) Official methods of analysis, vol 1, 15th edn. Association of Official Analytical Chemists (AOAC), ArlingtonGoogle Scholar
- 15.Tofalo R, Schirone M, Fasoli G, Perpetuini G, Patrignani F, Manetta AC, Lanciotti R, Corsetti A, Martino G, Suzzi G (2015) Influence of pig rennet on proteolysis, organic acids content and microbiota of Pecorino di Farindola, a traditional Italian ewe’s raw milk cheese. Food Chem 175:121–127CrossRefGoogle Scholar
- 17.AOAC International (2000) Official methods of analysis, 17th edn. Association of Official Analytical Chemists (AOAC), Washington, DCGoogle Scholar
- 19.Ianni A, Di Maio G, Pittia P, Grotta L, Perpetuini G, Tofalo R, Cichelli A, Martino G (2019) Chemical-nutritional quality and oxidative stability of milk and dairy products obtained from Friesian cows fed with a dietary supplementation of dried grape pomace. J Sci Food Agric. https://doi.org/10.1002/jsfa.9584 CrossRefPubMedGoogle Scholar
- 40.Platt I, Rao LG, El-Sohemy A (2007) Isomer-specific effects of conjugated linoleic acid on mineralized bone nodule formation from human osteoblast-like cells. Exp Biol Med 232:246–252Google Scholar