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Research Article

ScienceAsia 3 (1977): 131-134 |doi: 10.2306/scienceasia1513-1874.1977.03.131

 

DIFFERENT RESULTS ARISING FROM TWO TYPES OF THIOCHROME ASSAYS OF THIAMIN IN THE THIAMIN-TANNIC ACID REACTION

 

B. PANIJPAN and P. VILARTSAKDANON

Summary: Results from two different types of thiochrome assays showed that there was an underestimation of free thiamin during the early stages of the thiamin-tannic acid reaction caused by the interference of thiochrome formation by tannic acid present in the assay system. This interference was dependent on tannic acid concentration.

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Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok 4, Thailand

Received 31 August 1977