Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Synthetic Resins Catalyzing the Racemization of Amino Acids. II. The Activity of the Resins
Koji Toi
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1963 Volume 36 Issue 6 Pages 739-743


1) A study has been made of the factors influencing the racemization of amino acids by resinous catalysts with structures partially similar to those of pyridoxal and salicylaldehyde.
2) The optimum pH of the reaction was about 10.5.
3) A rise in temperature resulted in an increase in the rate of the reaction.
4) The racemization reactions catalyzed by the resins required the presence of metal ions, and cupric ions were found to be most effective.
5) Of the amino acids tested, L-alanine was racemized most rapidly.
6) The resinous catalysts retained activity after repeated usage.
7) The racemization-activity of the resins was compared with that of pyridoxal.

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