Starch hydrolyzing enzymes including endoamylase
, exoamylase, debranching enzyme and transferase belong to three glycosyl hydrolases families GH13, GH70 and GH77.
[alpha]-amylase is an endoamylase
that hydrolyses 1.4-[alpha]-glycoside linkages of amylose and amylopectin chains, decomposing starch into soluble dextrins and oligosaccharides.
Seasonal changes of activity of a starch granule bound endoamylase
and of a starch phosphorylase in Poplar wood (Populus x canadensis Moench robusta) and their possible regulation by temperature and phytohormones.
Ltd., (Zhuhai, China) and contained mainly neutral protease (3,000 U/g), acid protease (3,000 U/g), endoamylase
(500,000 U/g) and xylanase (65,000 U/g).
Amylases are classified into four groups including exoamylases, endoamylases
, debranching enzymes and tranferases (Souza and Magalhaes, 2010).
Amylases can be divided into endoamylases
butleri presents predominantly dextrinizing activity (endoamylases
) with reduced saccharifying potential (exoamylases).