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Chemical digestion of food

Carbohydrates, fats and proteins are the parts of the food. Until the pylorus, which is the exit of stomach, which of these mentioned types of food have already undergone chemical digestion?

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Until the exit of stomach, carbohydrates, in mouth, and proteins, within stomach, have undergone the chemical breaking through the digestive enzymes. Carbohydrates have suffered the action of salivary amylase and proteins have suffered the action of enzyme pepsin of gastric juice. Fats, until reaching the duodenum, do not undergo any chemical digestion.

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