1 Explain how bile salt acts as an emulsifier to aid the dig

1. Explain how bile salt acts as an emulsifier to aid the digestion of dietary fats.

2. Linoleic acid is abundant in many vegetable oils, such as corn, safflower, soybean, and sunflower oils; it is one of the essential fatty acids for humans. Classify linoleic acid as saturated, monounsaturated, or polyunsaturated. Is it a cis- or trans-fatty acid? Is it an omega-3, 6, or 9?

Solution

When food reaches from stomach to small intestine Bile salt is secreted from liver for digestion of food.

Bile salt composed of bile pigment , bile salt , cholestrol and water, bilirubin, . Bile emulsify fat into small droplets. They act as a detergent . Bile break down fat into fatty acid . Bile salt along with phospholipids breakdown fat globule by emulsification by associating its hydrophobic side with lipids and hydrophilic side with water.

Bile increases absorption of fats It is also important for absorption of fat soluble vitamin like vitamin A, D and K..

Linoleic acid is also known as cis 9,12 octadecadienoic acid is an polyunsaturated fatty acid due to the presence of two C=C double bonds. It is omega 3 fatty acid