Takebayashi Jun, Takasaka Noriko, Suzuki Ippei, Nakasaka Toshiaki, Hirabayashi Naoyuki, Ishimi Yoshiko, Umegaki Keizo, Chiba Tsuyoshi, Watanabe Takaho
National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition.
Hatano Research Institute, Food and Drug Safety Center.
Shokuhin Eiseigaku Zasshi. 2020;61(2):63-71. doi: 10.3358/shokueishi.61.63.
This paper deals with proficiency testing schemes for food nutrition analysis in Japan. In schemes in 2017 and 2018, 65 and 73 organizations participated, respectively, and more than 70% of the participants were public organizations responsible for a nutrition-labeling compliance test. The food matrices were pork and chicken sausages, and analytes were protein, fat, ash, moisture, carbohydrate, energy, sodium, salt equivalent, calcium (2018 only), and iron (2018 only). The organizations reporting inadequate laboratory values in one or more nutrients for mandatory declaration (energy, protein, fat, carbohydrate, or salt equivalent) were 11 and 15% of all organizations and 9 and 13% of public organizations in the 2017 and 2018 schemes, respectively. The approximate relative standard deviations for proficiency assessment (RSDr) were as follows: protein, 2%; fat, 3%; ash, 2%; moisture, 0.5%; carbohydrate, 9%; energy, 1%; sodium (salt equivalent), 4%; calcium, 7%; and iron, 7%. Notably, the large RSDr value for carbohydrate may cause inconsistency among laboratories in compliance tests for foods containing several grams or less of carbohydrate per 100 grams.
本文探讨了日本食品营养分析的能力验证计划。在2017年和2018年的计划中，分别有65个和73个组织参与，超过70%的参与者是负责营养标签合规测试的公共组织。食品基质为猪肉和鸡肉香肠，分析物为蛋白质、脂肪、灰分、水分、碳水化合物、能量、钠、盐当量、钙（仅2018年）和铁（仅2018年）。在2017年和2018年的计划中，报告一种或多种强制申报营养素（能量、蛋白质、脂肪、碳水化合物或盐当量）实验室值不合格的组织分别占所有组织的11%和15%，占公共组织的9%和13%。能力评估的近似相对标准偏差（RSDr）如下：蛋白质2%；脂肪3%；灰分2%；水分0.5%；碳水化合物9%；能量1%；钠（盐当量）4%；钙7%；铁7%。值得注意的是，碳水化合物的RSDr值较大可能会导致实验室在每100克含几克或更少碳水化合物的食品合规测试中出现不一致。
