Enzyme Identification in Saliva

Saliva plays a crucial role in the initial stages of digestion. It contains specific enzymes that begin breaking down food components.

Primary Salivary Enzyme

• Salivary Amylase (also known as ptyalin) is the principal enzyme found in human saliva.
• Its function is to start the chemical digestion of carbohydrates (starch) by breaking them down into simpler sugars like maltose.

Analysis of Options

• No enzyme: Saliva does contain enzymes.
• Salivary Protease: Proteases digest proteins. While some digestive enzymes are proteases, they are not the primary enzyme secreted in saliva.
• Salivary Lipase: Lipases digest fats. While lingual lipase is present in the mouth, it is secreted by lingual glands and primarily functions in the stomach; it's not considered the main enzyme *in* saliva itself.

Therefore, the enzyme characteristically present in saliva is Salivary Amylase.