DISTRIBUTION AND ACTIVITY OF HISTIDINE DECARBOXYLASE IN MORGANELLA
1958 Volume 2 Issue 2 Pages 143-147
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1958 Volume 2 Issue 2 Pages 143-147
The occurrence of histidine decarboxylase activity in 84 strains of Morganella has been investigated. Irrespective of source, all were found to be capable of forming histamine. It has been observed that histidine decarboxylase is produced by adaptation to environmental conditions and that the enzyme shows no decrease in activity in successive subcultures on nutrient agar slant. This enzyme action is to be regarded as one of the important biochemical characteristics of members of the genus Morganella.
The circular paper chromatography method used for quantitative determination of histamine in culture media is a practical and useful technique for screening histamine formers.
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