Scientificprinciples in yeast bread leavening:
Scientificprinciples in yeast bread leavening
Yeastcan be utilized as a leavening agent, but there are some guidelinesthat need to be observed. They include avoiding high temperaturesbecause yeast is living and is therefore very sensitive to hightemperatures. Adding salt to the yeast should also be avoided. Thetwo can inhibit the development of the yeast and even kill it. Sinceyeast is living it should be nourished as well to ensure its growth.When using yeast, warm water is added to yeast to aid in itsactivation and sugar is then added for nourishment that leads to therelease of tiny bubbles of carbon dioxide. The two steps pave a wayfor yeast to develop in size.
Afteractivation and nourishment, leavening is another step that as thename suggests results in the expansion of dough and batters. Theagent tenderizes the dough to yield a soft combination. Baking Sodais a chemical leavening agent that decomposes to form carbon dioxidedue to the interactions of acidity and alkalinity. The carbon dioxidetrapped in the dough result in holes left by the gas bubbles remain.It gives the dough soft and spongy like texture that leaves the doughairy with holes in it.
Addingwater and at the end leads to the production of gluten in the dough.This critical step causes the hydration of the Gliadin and Gluteninproteins and enables them to combine to form Gluten, which isnaturally a binding agent. Gluten is vital in the achievement ofstructure and volume in baked goods and prevents them from crumbling.The final step is kneading that warms and stretches gluten strandsmaking the dough elastic. Kneading also aids in mixing theingredients in addition to enhancing strength to the final product.