Accurate Measurement of Vitamins in Foods and Tissues

J. Thompson
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Abstract

Besides the inorganic constituents, phytate was also determined in the dry material, and was found to contain an initial level of 1.4±0.2 mg/g [3]. The storage stability of this constituent is being investigated. This preliminary investigation has demonstrated the feasibility of exploring a total mixed diet matrix for certification as a multicomponent Standard Reference Material (SRM). A bigger batch of a second mixed total diet is under investigation as part of a systematic study to evaluate the stability of several components over a period of at least 3-5 years. The experience gained from this investigation has helped in understanding some of the practical difficulties faced in the preparation of a natural biological reference matrix for multiple components, especially organic constituents. The authors are thankful to John Jones and Kathleen Cook (FDA) and Robert Watters (NBS) for elemental analysis, Michele Schantz (NBS) for organic analysis, and Eugene Morris (USDA) for phytate analysis.
食品和组织中维生素的精确测量
除无机成分外,还在干燥材料中测定了植酸盐,发现其初始含量为1.4±0.2 mg/g[3]。研究了该成分的贮存稳定性。这项初步调查表明,探索一种全混合膳食基质作为多组分标准参考物质(SRM)进行认证的可行性。作为评估几种成分在至少3-5年期间的稳定性的系统研究的一部分,正在对第二种混合总饮食的更大批次进行调查。从这项调查中获得的经验有助于了解在为多种成分,特别是有机成分制备天然生物参考基质时面临的一些实际困难。作者感谢John Jones和Kathleen Cook (FDA)和Robert Watters (NBS)进行元素分析,Michele Schantz (NBS)进行有机分析,Eugene Morris (USDA)进行植酸分析。
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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