Studies on the Mucous Substance of Gloiopeltis. VI

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The viscosity of the mucous substance of Gloiopeltis was determines by tine previously reported method and it was found to increase during storage as the dried preparation (Table 1). The maximum viscosity is obtained by heating at a certain temperature for a definite time, its value varying with species used (Fig. 1). But the viscosity decreases with the dura-tion of beating (Fig. 2). The solution of sodium peroxide, used as bleaching reagent, does not interfere with frond if its concentration is less than 9•1%. But when the solution is more than 0•1% in concentration, the more concentrated the solution, the less the viscosity of the preparation.
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