hydrolyze direct
Posted on September 18th, 2009 by admin
Bioengineering babies fed infant formula began in the late 19th century, when the practice of pediatrics still in its infancy. At that time, physicians have recognized that the components of protein and fat content of cow's milk for the baby hard to digest. Argued that the artificial milk, food should be tested, for reasons of safety of milk for children, a certain proportion of various nutrients, instead of adapting whole milk. The peak of interest in premature babies has opened the way for further studies on the modified formula scientists. In the 1940s, reports described the difficulty the child is too early for the inclusion of people with cow's milk and fat and documented that half of the feeding skimmed milk to reduce fat president, while the weight gain of newborns sufficient. In addition, researchers have found that contain mainly unsaturated such as olive oil and soybean oil were added to complete that the milk fat and full long chain such as palmitic acid, have been included in most, if fatty acids in the sn-2 position of monoglycerides. Others have shown that triglycerides of short and medium term due to improved absorption of fat, particularly in premature babies. In this historical perspective, the article by Nelson et al in this issue of the Journal of the American College of Nutrition underlines once more the importance of aspects of child development darm resorption at a time when security and efficiency infant formula be provided. Although some components of fat absorption are not yet fully developed in children, the absorption the ability of children is remarkable, because the fat content by weight of the child eats. Dietary fat, the average consumption 6.5 g / kg / day or approximately 45% of children in total daily energy intake. Much of this grease hydrolyzed in the stomach by diversity of languages and gastric lipase. Intragastric facilitates the hydrolysis of fat emulsion great for small droplets, a process that develops in the intestinal tract. Monoglycerides and fatty acids from the intragastric hydrolysis in the duodenum, where the incentives for Liberation cholcystokinine, which in turn promotes the release of pancreatic enzymes and bile secretion disorders jam. Salts bile emulsifies the products of the digestion of fats and pancreatic lipase was not digested Colipa hydrolyze long chain triglycerides, the formation of 2-mono. The mono-and phospholipids, cholesterol, fat soluble vitamins and bile salt micellar aggregates around its transition from the intestinal mucosa in the light in the cell. In their study, Nelson et al documented that the ratio of the absorption of fat olein palm oil has been reduced when he was considered one of the main components (45%) of fat from a mixture of formulas easy access infant. Today, infant formula from a mixture of various oils, including corn, coconut, soybean, canola, sunflower, safflower, and (o) of palm oil. The fatty acid content in each of these sources of fat is different, with coconut oil was more than short (8% by weight) and medium chain (68% by weight) of fatty acids and other fat sources as most acids long-chain fatty. The palmitic acid is 10% or less of total fatty acids in these oils except for palm oil in which approximately 41% of total fatty acids acids.Stearic, another long saturated fatty acids, less than 5% of total fatty acids in these oils. Except for nuts coconut and palm oil along the unsaturated fatty acids linoleic and oleic acid are the main components of fats in food infants. The long fatty acids, unsaturated fatty acids were absorbed more light than saturated fatty acids. Inclusion of fatty acids such as palmitic acid, is inconsistent with the position of fatty acids in the triglyceride molecules. In this case, the 2-monoglycerides of palmitic acid is absorbed, while palmitic acid and palmitic acid in sn-1 or sn-3 position of monoglycerides not. In the study by Nelson et al, olein palm oil, a fraction lower concentration of palm oil contains mainly palmitic acid in sn-1 and sn-3 position, so an explanation of the poor results the formula of this source of fat. Nelson et al have also shown previously that reducing fat intake is clear even in the presence of quantities fatty acids in the formula with palm Olein.Although the medium chain triglycerides can be absorbed directly into the intestinal mucosa cells without prior hydrolysis, most are quickly digested in the duodenum and absorbed directly into the cell without micelle formation and thus an easily accessible source fat nutrition. In this study, the addition of medium chain triglycerides, the effect of the olein Palmengarten in absorption intestinal fat.
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Article Source: ArticlesBase.com – Fat and Calcium Absorption in Infancy Revisited
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