Effect of species on the distribution and oxidative stability of milk added of lead and cadmium

IF 2.2 3区农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Italian Journal of Animal Science Pub Date : 2023-11-02 DOI:10.1080/1828051x.2023.2276266

Giulia Grassi, Amalia Simonetti, Emilio Gambacorta, Annamaria Perna

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引用次数: 0

Abstract

The aim of this study was to evaluate the effect of species on added lead (Pb) and cadmium (Cd) content in cow, buffalo, and goat milk and their distribution in fat, casein, and whey fractions. In addition, the oxidative stability of the milk was evaluated. Most of the Pb and Cd were recovered in the skimmed milk (96.74 and 94.21%, respectively). The distribution of Cd and Pb in casein and whey fractions, obtained by enzymatic coagulation, highlighted that they were mainly associated with casein (on average 94.77 and 90.54% of Pb and Cd, respectively). The species significantly affected the distribution of Cd and Pb in the casein and fat fractions (p < 0.01). In particular, Cd and Pb levels in fat fraction were the highest in the buffalo milk, whereas casein fraction was the highest in bovine milk. Furthermore, the presence of metals negatively influenced the oxidative stability of the milk and the species influenced its response. The results showed that in the presence of Cd and Pb, bovine milk increased the content of Malondialdehyde (MDA), advanced oxidation protein products (AOPP) and dithyrosines compared to other species. In addition, there was a significant decrease in the thiol content, highlighting a reduction in the antioxidant capacity of the contaminated milk.

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物种对添加铅和镉的牛奶分布及氧化稳定性的影响

本研究的目的是评价品种对奶牛、水牛和山羊奶中添加铅(Pb)和镉(Cd)含量的影响及其在脂肪、酪蛋白和乳清馏分中的分布。此外，还对牛奶的氧化稳定性进行了评价。脱脂乳中Pb和Cd的回收率最高，分别为96.74%和94.21%。酶凝法得到的酪蛋白和乳清中Cd和Pb的分布表明，它们主要与酪蛋白相关(Pb和Cd的平均含量分别为94.77%和90.54%)。鱼种对酪蛋白和脂肪组分中Cd和Pb的分布有显著影响(p < 0.01)。其中，水牛奶中脂肪部分的Cd和Pb含量最高，酪蛋白部分的Cd和Pb含量最高。此外，金属的存在对牛奶的氧化稳定性产生负面影响，物种影响其反应。结果表明，在Cd和Pb的存在下，牛乳中丙二醛(MDA)、高级氧化蛋白产物(AOPP)和二甲状腺氨酸的含量明显高于其他品种。此外，硫醇含量显著下降，突出表明受污染牛奶的抗氧化能力下降。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Italian Journal of Animal Science 农林科学-奶制品与动物科学

CiteScore

4.90

自引率

8.00%

发文量

141

审稿时长

18-36 weeks

期刊介绍： The Italian Journal of Animal Science is an international peer-reviewed open access journal publishing original scientific papers, reviews and short communications on animal science, animal production and related areas. The journal welcomes submissions on the following subjects: • Animal derived food quality and safety • Animal genetics and breeding • Aquaculture, poultry, companion and wildlife • Livestock systems, management and environment • Non-ruminants nutrition and feeding • Production physiology and biology • Ruminants nutrition and feeding Announcements of congresses, presentations of universities, research institutes, books and proceedings may also be published, as well as news regarding the members of the Animal Science and Production Association (ASPA). The Association will be glad to receive proposals for your admission as an ordinary or corresponding member: please read regulations and procedures in the statute of the ASPA .