文献类型： 外文期刊
第一作者： Rogers, Karyne M.
作者： Rogers, Karyne M.;Phillips, Andy;Fitzgerald, Joan;Rogers, Pam;Cooper, Jannine;Rogers, Karyne M.;Nie, Jing;Liu, Zhi;Zhang, Yongzhi;Shao, Shengzhi;Yuan, Yuwei;Rogers, Karyne M.;Nie, Jing;Liu, Zhi;Zhang, Yongzhi;Shao, Shengzhi;Yuan, Yuwei;Pearson, Andrew J.
作者机构：
期刊名称：INTERNATIONAL DAIRY JOURNAL （ 影响因子：3.1； 五年影响因子：3.2 ）
ISSN： 0958-6946
年卷期： 2023 年 141 卷
页码：
收录情况： SCI
摘要： Samples of New Zealand (NZ) butter (20), Australian butter (2) and USA butter (1), all with assured traceability, were characterised using stable isotopes. A further 45 butter samples from a range of geographical origins sold in Chinese supermarkets were compared for traceability evaluation purposes. Supervised PLS-DA of bulk butter and protein isotopes accurately distinguished genuine NZ butter from China, USA and European labelled butter. Carbon (bulk and protein) and sulphur (protein) isotopes of NZ butter had the highest discrimination ability due to characteristic isotope signatures arising from C3 pastoral feed and coastal proximity of NZ's farming regions; NZ butter was not completely discriminated from Australian or Irish butter due to similar dairy farming practices and environmental conditions. Nonetheless, stable isotopes could reliably identify NZ butter from Chinese, USA and European labelled products offering a useful tool to recognise mislabelled premium NZ butter in several key international export markets.(c) 2023 Elsevier Ltd. All rights reserved.
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