1943
DOI: 10.1042/bj0370518
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The thermal decomposition of aneurin and co-carboxylase at varying hydrogen ion concentrations

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1945
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Cited by 20 publications
(10 citation statements)
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“…Also, cupric salts were claimed to enhance thermal degradation (Booth, ), but this was shown to only be reliable in phosphate buffers ‐ in other buffers cupric salts retarded the reaction (K. T. H. Farrer, ). Similarly, iron, zinc, and nickel salts had no effect in phosphate buffer but had variable effects on reaction rate in other buffers (Booth, ; K. T. K. Farrer, ). And yet another study demonstrated that over the course of almost a year, cupric, ferric, and ferrous salts all enhanced degradation at room temperature at pH 5 in unbuffered samples (Dutta, Mehta, & Narayanan, ).…”
Section: Thiaminementioning
confidence: 99%
“…Also, cupric salts were claimed to enhance thermal degradation (Booth, ), but this was shown to only be reliable in phosphate buffers ‐ in other buffers cupric salts retarded the reaction (K. T. H. Farrer, ). Similarly, iron, zinc, and nickel salts had no effect in phosphate buffer but had variable effects on reaction rate in other buffers (Booth, ; K. T. K. Farrer, ). And yet another study demonstrated that over the course of almost a year, cupric, ferric, and ferrous salts all enhanced degradation at room temperature at pH 5 in unbuffered samples (Dutta, Mehta, & Narayanan, ).…”
Section: Thiaminementioning
confidence: 99%
“…pH-Rate Profile of Thiamine Hydrolysis.-Although the marked influence of hydrogen ion concentration on the rate of the hydrolytic degradation of thiamine was recognized by many early workers (4)(5)(6)(7)(8), no previous serious attempts clearly separating the influence of pH from the effects of buffer catalysis seem to have been made. Buffer-free rates a t various pH values can, however, be readily picked from Figs.…”
mentioning
confidence: 99%
“…Boeause of the very slow rate of destruetion of aneitrin at the lower temperatures, it was not considered worth while studying this further with the other buff'ers. Booth (1943) mentioned precautions taken to free buffer solutions from oxygen in the hope of explaining: abnormally riipid destruetion of aueurin. However, he eould find no evidence of an oxygen etrect.…”
Section: Discussionmentioning
confidence: 99%