Enzymes are naturally present in the human body – to date, we know there are at least 7000 active enzymes in our bodies. Enzymes help to transform food into small pieces that our body can digest. In bread making, the enzymes that are present drive the fermentation process, while the ones that are added guarantee a consistent quality. Without enzymes, you cannot make bread.
An enzyme is in fact a protein, produced by different types of micro-organisms.