yeast serum

例句：

1. 1.The yeast serum is used to enhance the flavor of baked goods.
   酵母血清用于增强烘焙食品的风味。
2. 2. The yeast serum was added to the dough to give it a richer texture.
   在面团中加入了酵母血清以赋予其更丰富的质地。
3. 3.The yeast serum helps to activate the gluten in the flour, which is crucial for bread making.
   酵母血清有助于激活面粉中的麸质，这对于面包制作至关重要。