Safety and quality evaluations of liquid milk and infant formula products in China in 2022

Lu Meng, Nan Zheng, Yanan Gao, Huimin Liu, Jiaqi Wang
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Abstract

Milk serves two nutritional functions: it provides nutrition while also maintaining a healthy intestinal microenvironment. Thus, the safety and quality of milk products are critical for consumers' health. To evaluate liquid milk and infant formula products in China, we analyzed nine indices of 294 batches of pasteurized milk (PM), 92 batches of ultra-high temperature milk (UHT), and 20 batches of infant formula milk powder (IF) collected from 21 provinces in 2022. All PM, UHT, and IF samples were satisfactory concerning aflatoxin M1 contamination, contamination by heavy metals, and residues of veterinary drugs and pesticides. The contents of lactoferrin, α-lactalbumin, β-lactoglobulin, furosine, and lactulose in the majority of samples met the group standards. Moreover, the contents of lactoferrin, α-lactalbumin, and β-lactoglobulin were higher in PM than in UHT, while furosine and lactulose contents showed the opposite trend. The findings concerning the safety and quality of milk products in China provide important insights to aid consumer preferences for milk products.

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2022年中国液态奶及婴幼儿配方奶粉产品安全质量评价
牛奶有两种营养功能:它提供营养,同时保持健康的肠道微环境。因此,奶制品的安全和质量对消费者的健康至关重要。为了评估中国的液态奶和婴儿配方奶粉产品,我们分析了2022年从21个省份收集的294批次巴氏灭菌奶(PM)、92批次超高温奶(UHT)和20批次婴儿配方奶粉(IF)的9项指标。所有PM、UHT和IF样品在黄曲霉毒素M1污染、重金属污染以及兽药和农药残留方面均令人满意。大多数样品中乳铁蛋白、α-乳清蛋白、β-乳球蛋白、糠氨酸和乳果糖的含量符合组标准。此外,PM中乳铁蛋白、α-乳清蛋白和β-乳球蛋白的含量高于UHT,而糠氨酸和乳果糖的含量则呈现相反的趋势。有关中国乳制品安全和质量的研究结果为帮助消费者偏好乳制品提供了重要见解。
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