Both release carbon dioxide gas bubbles. These, in turn, cause baked goods to rise.
a yeast dough uses yeast and a quick bread uses baking powder or baking soda.
Quick breads are leavened with baking powder or baking soda. Yeast breads are leavened with yeast, and require more time to rise.
Quick breads are baked goods that are leavened with baking powder or baking soda instead of yeast, making them quick to prepare and bake. Examples of popular types of quick breads include banana bread, zucchini bread, muffins, and scones.
Baking powder is used as leavening in baked goods such as cookies, cakes, quick breads, biscuits and pancakes. It creates gas in the batter that causes the product to rise.
Quick breads get their name because they are leavened with baking powder or baking soda rather than yeast, allowing them to rise quickly during baking. This means they can be prepared and baked in a shorter time frame compared to yeast breads, which require longer fermentation and rising periods. As a result, quick breads are often easy and fast to make, making them a popular choice for home bakers.
They are chemical (non-yeast) leavening agent usually used in quick breads, cakes and cookies.
Sourdough is a type of bread made with yeast starter instead of dry yeast. Starter is for yeast bread and baking powder and soda are for quick breads and cookies. They are not interchangeable.
Quick breads such as muffins, unlike yeast breads, can be baked immediately after the ingredients are mixed. In other words, there is no need to wait for leavening to occur before baking the muffins because they rise during baking. Therefore, they are relatively quick to make. Yeast breads on the other hand require a lot of time for leavening before baking and are much more time consuming.Source: "Understanding Food" by Amy Brown
Leavening agents are the ingredients that make the baked goods rise so they are light and airy. It could be yeast, baking soda, or baking powder. Sometimes in cakes, the eggs are whipped into a froth to add air to the cake and this acts as a leavening agent.
Quick breads rise primarily through the action of baking soda or baking powder, which are chemical leavening agents. When these agents are mixed with wet ingredients and exposed to heat, they produce carbon dioxide gas, causing the batter to expand and rise. The rapid mixing and baking process distinguishes quick breads from yeast breads, which rely on fermentation for leavening. Additionally, the moisture and air incorporated during mixing help to create a light and tender texture.
A reason as to why quick breads collapse as they are cooling is that the batter was mixed too fast or too vigorously, which create unstable air bubbles in the mix. Other reasons can include that an ingredients, such as baking powder is old, or the quick bread is under-baked.
A well-made quick bread should be moist and hold together well. Not too dry, and not too moist or heavy.