The Effects of Phytin on the Production of Glucose Isomerisation Enzyme

Abstract

The effects of the additon of soluble and poor soluble salts of phytic acid to the medium for the propagation of St. phaeochromogenus were investigated. The addition of soluble potassium phytate did not show any promoting effects on the production of glucose isomerisation enzyme and the excess soluble phytate resulted in the decline of cell growth and of cell activity. On the other hand, the addition of poor soluble salts of phytic acid enhanced the production of the enzyme and the activity per cell weight was considerably fortified. An adequate dosage seems to be 0.2% pulverized phytate in the medium.