パン釀焙に關する研究 (第13報) : 電流滴定によるGlutenのSH基の定量 (その2)

概要

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Mercuri-amperometric titration was applied to the determination of sulfhydryl radical of gluten dispersed in 0.1 N acetic acid. The results obtained were as follows : 1) The optimum condition of titration : Rotating Pt electrode 600 r.p.m. Potential of electrode -0.15V(to N.E.C.) Titration with M/1000 HgCl_2 The composition of electrolyte : [table](N-content 500〜800mg%)2) The electrolyte was stable and the titration value did not decrease so much even when it was kept at 30℃ for 60 min.3) It was possible to carry out the titration within the pH range of 4.4〜8.8,and almost the same titration value was obtained in each case.4) When the titration values obtained by the argentmetric and the mercurimetric method are compared with each other, they are approximately equal in both cases.
1955-07-15