[Action of soluble carbohydrates from avocado (Persea gratissima Gaertner) fruit on utilization of calcium in the rat].

Ethanolic extract containing soluble sugars was prepared from avocados (variety americana) coming from Madagascar. In this extract, thin layer and paper chromatography showed the presence of a ketoheptose, the mannoheptulose, in amount of 0.1 g/ml extract or 1.