Interlaboratory Study for Determination of Vitamin B12 in Fortified Food Measured by Microbiological Assay

被引：1

作者：

Matsumoto, Teruki ^{[1
]}

Suzuki, Haruna ^{[1
]}

Takebayashi, Jun ^{[1
]}

Murakami, Taro ^{[2
]}

Fukushima, Kota ^{[3
]}

Iizuka, Tayoshi ^{[3
]}

Yoshida, Mikihiko ^{[4
]}

Nagao, Yasuhiro ^{[4
]}

Takemura, Rui ^{[5
]}

Saito, Rie ^{[5
]}

Ishimi, Yoshiko ^{[1
]}

机构：

[1] Natl Inst Hlth & Nutr, Shinjuku Ku, Tokyo 1628636, Japan

[2] Osaka City Inst Publ Hlth & Environm Sci, Tennoji Ku, Osaka 5430026, Japan

[3] Japan Inspect Assoc Food & Food Ind Environm, Chuo Ku, Tokyo 1040031, Japan

[4] Japan Food Res Labs, Suita, Osaka 5640051, Japan

[5] Japan Frozen Foods Inspect Corp, Minato Ku, Tokyo 1050012, Japan

来源：

BUNSEKI KAGAKU | 2012年 / 61卷 / 04期

关键词：

interlaboratory study; vitamin B-12; fortified food; microbiological assay;

D O I：

10.2116/bunsekikagaku.61.347

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Currently, approval and license examinations of Food for Special Dietary Uses (FOSDU) have been held by six testing institutions. For proper operation of the FOSDU system, it is important to maintain the analytical accuracy, however, the accuracy of analysis among the groups has never been discussed. For that reason, we carried out a study to clarify the factors affecting the interlaboratory analytical accuracy with vitamin B-12 contents in fortified food. As a result, it was found to be important that it has to adhere closely to the analytical method for the assurance of reproducibility, and has to use the most suitable approximate method against the calibration curve and/or to take account the proliferation potential of strain for improvement of reproducibility in the microbiological assay for the vitamin B-12 quantitation.

引用

页码：347 / 351

页数：5

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