potassium benzoate

例句：

1. 1.This compound is used as a preservative in food and pharmaceuticals.
   这种化合物用作食品和药品的防腐剂。
2. 2. The potassium benzoate helps to preserve the color of the food.
   苯甲酸钾有助于保持食物的颜色。
3. 3. Potassium benzoate is also used as a flavoring agent in some foods.
   苯甲酸钾也用于某些食品作为调味剂。