Role of Alpha-Amylase and Xylanase in the Dough Structure

Role of Alpha-Amylase and Xylanase in the Dough Structure

Alpha-amylase and xylanase are enzymes commonly used in the baking industry to improve the quality and structure of the dough. Alpha-amylase is an enzyme that breaks down starch molecules into smaller components, such as glucose and maltose, which can be fermented by yeast to produce carbon dioxide gas. This gas is essential for dough expansion and helps to create a light and airy texture in baked goods. An enzyme called xylanase degrades hemicellulose, a complex carbohydrate present in the cell walls of plants. Xylanase can help to loosen the dough structure, making it more extensible and easier to shape while also improving the water absorption capacity and overall quality of the dough. 

 

When used together, alpha-amylase and xylanase can improve the rheological properties of dough, such as elasticity, extensibility, and resistance to deformation, which can result in better volume, texture, and crumb structure in baked goods. The specific dosage and application of these enzymes may differ depending on flour type, dough recipe, and processing conditions. Therefore, it’s crucial to use enzymes in a controlled and precise manner to avoid over-treatment, which can lead to undesirable effects such as dough stickiness, excessive gas production, or enzyme degradation. 

 

 

 

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