Osservazioni Preliminari Sulla Struttura Submicroscopica dei Granuli di Amido dell'endosperma Maturo di Triticum Durum Desf

Abstract

Preliminary observations on the submicroscopic structure of the endospermic starch granules in TRITICUM DURUM desf. (The electronic transparency of the starch granules). — The starch granules of Triticum durum Desf. kernels have been examined by electron microscopy.

The high degree of transparency of the granules appears to depend upon the regular disposition of the structural units, while their opacity probably is in relation with their orderless arrangement. The opacity of amorphous portions of the layers, of the median fissure and of the black bands seems to be in relation with the amorphous condition of such formations.

The black bands and the bubbles which have been considered respectively as protein layers and as the result of enzymes action, are only artifacts. The bubbles are interpreted as pyrodestrines.