3. Types of sourdoughs
On the basis of applied technology, sourdoughs have been grouped into three types: type I (sourdough which is restarted
using a part of the previous fermentation), type II (generally used as dough-souring supplements in semi-fluid
preparations) and type III (are dried preparations) [18, 19]. Unlike type I sourdoughs, types II and III doughs require the
addition of baker’s yeast (S. cerevisiae) as leavening agent [20].