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2015, vol. 31, br. 1, str. 45-53
Sastav masnih kiselina mlečne masti ovaca rase cigaja i njihovih F2 meleza sa rasom hios
aResearch Institute of Mountain Stockbreeding and Agriculture, Troyan, Bulgaria
bAgrarian Faculty of Thracian University,Stara Zagora, Bulgaria

e-adresagercho_g@abv.bg
Ključne reči: sheep milk; milk fat; fatty acids
Sažetak
Istraživanje je sprovedeno na zbirnim uzorcima mleka, koji su uzimani svakog meseca u periodu muže, od ovaca rase cigaja i njihovih F2 meleza sa rasom hios, gajenih u uslovima centralnih Balkanskih planina. Ekstrakcija masti uzoraka mleka je urađena po metodi Rouz-Gottlieb. Sastav masnih kiselina je određen na gasnom hromatografu sa jonizacionim detektorom i kapilarnim kolonama. Cilj istraživanja je bio da prati promene u sastavu masnih kiselina mlečne masti cigaja ovaca i njihovih F2 meleza. Zasićene masne kiseline u mleku od dve grupe imale su visoke vrednosti tokom obe godina uzastopno, jer su varirale od 67,05% u mleku cigaja ovaca u drugoj laktaciji do 70,87% kod njihovih F2 meleza. Sadržaj miristinske kiseline je bio 8,22-8,88% u mleku cigaja ovaca i 8,45-8,74% njihovih F2 meleza. Ukupan sadržaj poli-nezasićenih masnih kiselina u ispitivanom mleku dva tipa ovaca je bio relativno nizak sa približnim koncentracijama (4,39-5,20%) u periodu od dve godine. Mleko od dve grupe je imalo visoke vrednosti korelacije SFA/PUSFA (15,71 i 13,17) i niske vrednosti PUSFA/SFA (0,06-0,08). Mono nezasićene masne kiseline, zastupljene uglavnom kroz oleinsku kiseline (C18: 1) varirale su tokom oba perioda od 21,92% do 25,32% i pojavile su se kao supstrat u sintezi CLA. Masne kiseline kratkog lanca (C4:0 - C11:0) su imale veće vrednosti kod cigaja ovaca u poređenju sa F2 melezima sa rasom hios. Masne kiseline dugačkog lanca (C17iso - C25:0) su imale približnu koncentraciju u mleku cigaja rase, dok je njihov sadržaj u mleku F2 meleza bio povećan.
Reference
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O članku

jezik rada: engleski
vrsta rada: izvorni naučni članak
DOI: 10.2298/bah1501045g
objavljen u SCIndeksu: 24.06.2015.

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