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目的收集中国市场现有婴儿配方食品,并对其营养素含量进行测定,探讨产品中各营养素的分布规律及标准未来修订的可能影响。方法抽取中国市场常见婴儿配方食品(国产或进口),抽取地点包括商场、超市、母婴店、生产企业等,涵盖市场主流产品。用国标方法测定产品中各营养素含量,并建立数据库,分析各营养素分布状态并与国标的限量值范围进行比较。结果纳入的婴儿配方食品共计1639例,产品来自广东、河北、黑龙江、内蒙古等27个省(自治区、直辖市),产地包括上海、江苏、黑龙江等24个省(自治区、直辖市)以及海外(美国、欧洲、澳大利亚、日本、新加坡等),基本覆盖了目前国内市场流通的主要产品。营养素检测结果表明,碳水化合物、维生素A、维生素E、维生素K_1、维生素B_1、维生素B_2、维生素B_6、叶酸、泛酸、维生素C、钠、钾、镁、钙、锌、锰等营养素的实际含量分布处于标准范围内较低的区间,亚油酸、铁等营养素的实际含量分布于标准范围内较高的区间,蛋白质、脂肪、维生素D、烟酸、铜等营养素的实际含量则在国标上下限区间内均匀分布。结论国内市场现有婴儿配方食品中大部分营养素含量分布在标准范围内较低的区间,因此未来标准修订根据最新科学证据适当降低某些营养素的最大值时,对市场产品的影响不会太大。
OBJECTIVE To collect the existing infant formulas in the Chinese market and determine their nutrient contents to explore the distribution of nutrients in each product and the possible impact of future standard revisions. Methods The common infant formula (domestic or imported) was extracted from the Chinese market. The extraction sites included shopping malls, supermarkets, maternal and child stores, and manufacturing enterprises, covering the mainstream products in the market. Using national standard method to determine the content of each nutrient in the product, and to establish a database to analyze the distribution of each nutrient and compare with the limited range of national standard. Results A total of 1 639 infant formula products were included in the study. The products came from 27 provinces (autonomous regions and municipalities) in Guangdong, Hebei, Heilongjiang and Inner Mongolia. The origin areas included 24 provinces (autonomous regions and municipalities directly under the Central Government), including Shanghai, Jiangsu and Heilongjiang, as well as overseas (USA, Europe, Australia, Japan, Singapore, etc.) basically covering the major products currently circulating in the domestic market. The test results of nutrients showed that the actual content of nutrients such as carbohydrates, vitamin A, vitamin E, vitamin K_1, vitamin B_1, vitamin B_2, vitamin B_6, folic acid, pantothenic acid, vitamin C, sodium, potassium, magnesium, calcium, zinc and manganese In the lower range of the standard range, the actual content of linoleic acid, iron and other nutrients distributed in the standard range of the higher range of protein, fat, vitamin D, niacin, copper and other nutrients in the actual content of the national standard upper and lower limits Interval evenly distributed. Conclusion Most of the existing infant formula in the domestic market is distributed in the lower range of the standard range. Therefore, the standard revision in the future will appropriately reduce the maximum value of certain nutrients according to the latest scientific evidence and will not have much impact on the market products .