Über einige Verdauungsfermente im Kropfsafte einheimischer Pulmonaten. (Vorläufige Mitteilung.)

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Abstract
Proteolytic enzymes, erepsin, fat and sugar-splitting enzymes are present in the crop fluid of pulmonates. Macerated "liver" (Mittcldarmdriisn), volume for volume, has a greater enzyme activity, but does not differ qualitatively. Lower neutral fats are more readily digested than higher fats or lower esters. Quinine and NaF inhibit the splitting of tributyrin. The optimum pH for erepsin varies with the buffer used. from pH 5.7 with acetate to pH 9.0 with glycocoll. Although dissolved starch is strongly attacked. starch grains are scarcely affected. No significant difference is demonstrable between the enzyme activities of the fluids from herbivorous and omnivorous spp.

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