What is the optimal pH for the digestion of lipids, carbohydrates, and proteins?

Expert Solution

1)Lipids are broken down into fatty acids and monoglycerides.Lipid digestion starts in the mouth and continues on in stomach and small intestine.
Acid lipase start the digestion where lingual lipase in mouth and gastric lipase in stomach
The optimum pH for lingual and gastric lipase is pH 4-6.
Lipase secreted from pancreatic juice.
Bile salts are cholesterol derivative that helps emulsify lipids to assist digestion.Lipase converts triglycerides into fatty acids and monoglycerides.

2)Amylase acts upon the digestion of carbohydrates. As the bolus of food is pushed along the digestive tract through peristalsis pH changes.
They are active at pH of 6-7.
This enzyme hydrolyses starch to maltose.

3)Pepsin is an enzyme in the stomach that helps breakdown of proteins into peptides. Active pepsin has lower pH of 2 ,soo it is best for pepsin to stay acidic.
Proteins are broken down into amino acids. Pepsin is secreted by chief cells of gastric glands.

Sydney Mullin answered 1 year ago

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