Trehalase (EC Number 3.2.1.28; trehalose 1-glucohydrolase) is an enzyme which splits the disaccharide trehalose (1-a-D-glucopyranosyl-a-Dglucopyranoside) to glucose; and it is widely distributed in both plants and animals. It was first discovered by Bourquelot (1893) in Aspergillus niger and since then has been found in bacteria, fungi, yeast, the serum of certain fishes, and in insects (Kalf a...