Active transport of sugars in tortoise intestine

Abstract
The tortoise intestine capability for active transport of sugars has been studied in vitro at 30 degrees C, using labelled sugars. A release of glucose from the glycogen stores of the intestinal wall to the medium took place throughout the incubation period of the sacs. An active transport of 14C-D-glucose against a concentration gradient from the mucosal to the serosal compartment was evident, whereas no such activity could be detected for 14C-D-galactose. The tissue oxygen uptake was 36% higher with glucose than with galactose in the medium.
Keywords:
Active, Animals, Biological Transport, Galactose/metabolism, Glucose/metabolism, Intestinal Absorption, Intestine, Oxygen Consumption, Small/metabolism, Turtles/metabolism
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