I am not sure but there are way to many to list you might be better off typing in a specific food to find the answer out
gastric acid
Both fluids and saliva are added to food in the mouth. In the stomach, mostly acid is added.
the stomach
Food acids such as citric acid or acetic acid are added to food and drink for several reasons. They can enhance flavor, act as preservatives by inhibiting bacterial growth, and help with food preservation by balancing pH levels or preventing enzymatic browning. Additionally, food acids can improve the texture of some foods by interacting with proteins.
Food acids are added to food to enhance flavor, increase shelf-life by acting as a preservative, and help balance the overall taste of the product. They can also contribute to food safety and inhibit the growth of harmful bacteria.
A lighter shade of blue
If you have added excess acid, you may notice a sharp, sour taste in your food or drink. Additionally, the texture of your food may change, becoming grainy or mushy. It's best to taste a small sample before adding more acid to avoid over-acidifying your dish.
Hydrochloric acid is naturally produced in the human stomach as part of gastric acid which helps in the digestion process by breaking down food. It is not added directly to food but is produced in the stomach to aid in the breakdown of proteins and kill any potential harmful bacteria in the food.
It's an amino acid which is added to food to improve taste, but high quantities can cause sweating and hyperactivity.
Sulfuric acid is added to sugar to make carbon
It seems like you are referring to 2-hydroxypropane-1,2,3-tricarboxylic acid, commonly known as citric acid. It is a key intermediate in the citric acid cycle, an important metabolic pathway in all aerobic organisms. Citric acid is commonly used as a food additive and souring agent in various food and beverage products.
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