Lipids emulsification with phospholipids

The final emulsification of dietary lipids into micelles (droplets that are small enough to be absorbed across the intestinal mucosa) is achieved by the action of the bile salts. The bile salts are synthesized from cholesterol in the liver, and secreted, together with phospholipids and cholesterol, by the gall bladder. As shown in Figure 4.15, some 2 g of cholesterol and 30 g of bile salts are secreted by the gall bladder each day, almost all of which is reabsorbed, so that the total faecal output of steroids and bile salts is 0.2—1 g/day. 

Formation of liposomal vesicles under controlled conditions of emulsification of lipids with phospholipids has achieved prominence in the development of dmgs and cosmetics (32). Such vesicles are formed not only by phospholipids but also by certain nonionic... 

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