酸水解法快速测定肉和肉制品中脂肪
吴鸿敏,田洪芸,孙栋
1. 山东省淡水渔业研究院,山东省淡水水产遗传育种重点实验室,济南 250117; 2. 山东省食品药品检验研究院,国家市场监管重点实验室(肉及肉制品监管技术),济南 250101
Rapid determination of fat in meat and meat products by acid hydrolysis method
WU Hongmin1, TIAN Hongyun2, SUN Dong1
1. Shandong Freshwater Fisheries Research Institute, Shandong Provincial Key Laboratory of Freshwater Genetics and Breeding,Jinan 250117, China; 2. Shandong Institute for Food and Drug Control, State Key Laboratory of Market Supervision(SupervisionTechnology of Meat and Meat Products), Jinan 250101, China
摘要:建立酸水解法快速测定富含结合态脂肪的肉及肉制品中脂肪含量的方法。样品与盐酸一同在 75 ℃ 水浴中加热进行水解,结合或包藏在组织里的脂肪可游离出来,然后用乙醚和石油醚提取 3 次,除去溶剂即得样品中总脂肪含量。该方法测定结果同食品安全国家标准 GB 5009.6—2016 规定方法相比无显著差异,测定结果的相对标准偏差为 0.38%(n=20),测定时间由食品安全国家标准 GB 5009.6—2016 方法的 13 h 缩短至 4 h,且不需要专门的索氏抽提仪器。该方法适用于肉及肉制品中脂肪的批量测定。
Abstract:Acid hydrolysis method was established to determine the content of fat in meat and meat products rich in conjugated fat. The sample and hydrochloric acid were heated together in 75 ℃ water bath for hydrolysis, the fat combined or contained in the tissue was set free, and then extracted three times with ethyl ether and petroleum ether. The total fat content in the sample was obtained by removing the solvent. The results of this method showed no significant difference compared with the method specified in the national food safety standard GB 5009.6—2016, and the relative standard deviation of the measurement results was 0.38% (n=20), and the measurement time was shortened from 13 h by the national food safety standard GB 5009.6— 2016 method to 4 h, no need for specialized soxhlet extraction instruments. This method is suitable for batch determination of fat in meat and meat products.
关键词:酸水解法;酸水解-索氏抽提法;肉及肉制品;脂肪
Keywords:acid hydrolysis; acid hydrolysis-soxhlet extractor method; meat and meat products; fat
本文引用格式:
吴鸿敏,田洪芸,孙栋.酸水解法快速测定肉和肉制品中脂肪[J].化学分析计量,2023,32(10):31.
WU Hongmin,TIAN Hongyun,SUN Dong. Rapid determination of fat in meat and meat products by acid hydrolysis method[J].Chemical Analysis and Meterage,2023,32(10):31.
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