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State the source, substrate, products and optimum pH of one amylase, one protease, and one lipase

Amylase (Salivary amylase)
Source: salivary glands in the mouth
Substrate: starch
Products: maltose
Optimum pH: 4.6-5.2

Protease (pepsin)
Source: chief cells in the stomach
Substrate: proteins, polypeptide chains
Products: smaller peptide chains
Optimum pH: 1.5-1.6

Lipase (pancreatic lipase)
Source: pancreas
Substrate: triglycerides
Products: fatty acids and glycerol
Optimum pH: 8.0

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