Abstract：
:Stable isotope ratios ((13)C/(12)C and (15)N/(14)N) of South African Dorper lambs from farms with different vegetation types were measured by isotope ratio mass spectrometry (IRMS), to evaluate it as a tool for the authentication of origin and feeding regime. Homogenised and defatted meat of the Longissimus lumborum (LL) muscle of lambs from seven different farms was assessed. The δ(13)C values were affected by the origin of the meat, mainly reflecting the diet. The Rûens and Free State farms had the lowest (p ⩽ 0.05) δ(15)N values, followed by the Northern Cape farms, with Hantam Karoo/Calvinia having the highest δ(15)N values. Discriminant analysis showed δ(13)C and δ(15)N differences as promising results for the use of IRMS as a reliable analytical tool for lamb meat authentication. The results suggest that diet, linked to origin, is an important factor to consider regarding region of origin classification for South African lamb.
journal_name
Food Chemjournal_title
Food chemistryauthors
Erasmus SW,Muller M,van der Rijst M,Hoffman LCdoi
10.1016/j.foodchem.2015.07.121subject
Has Abstractpub_date
2016-02-01 00:00:00pages
997-1005eissn
0308-8146issn
1873-7072pii
S0308-8146(15)01154-1journal_volume
192pub_type
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