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lysine
lysine
A Dictionary of Food and Nutrition
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2005
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© A Dictionary of Food and Nutrition 2005, originally published by Oxford University Press 2005. (Hide copyright information)
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lysine An essential
amino acid of special nutritional importance, since it is the
limiting amino acid in many cereals. Can be synthesized on a commercial scale, and when added to bread, rice, or cereal‐based animal feeds, it improves the nutritional value of the protein.
Not all of the lysine in proteins is biologically
available, since some is linked through its side‐chain amino group, either to sugars (see
Maillard reaction), or to other amino acids. These linkages are not hydrolysed by digestive enzymes, and so the lysine cannot be absorbed. Available lysine is that proportion of the protein‐bound lysine in which the side‐chain amino group is free, so that it can be absorbed after digestion of the protein.
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Lysine market review and outlook.(Fine and Specialty)(Industry overview)
Magazine article from: China Chemical Reporter; 8/26/2009; ; 700+ words
; 1. Review of the lysine market in 2008 The lysine market in China fluctuated considerably in 2008. The price trend of lysine in the first half of 2008 was similar to previous years. The highest price of the year appeared in early July, when...
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Bioefficacy of lysine from L-lysine sulfate and L-lysine x HCl for 10 to 20 kg pigs.(Report)
Magazine article from: Asian - Australasian Journal of Animal Sciences; 10/1/2007; ; 700+ words
; ...this study was to compare the bioefficacy of L-lysine sulfate relative to L-lysine x HCl for 10 to 20 kg pigs. Two experiments were...determine the bioefficacy of the two sources of lysine using daily gain, feed conversion, plasma urea...
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Lysine Requirement through the Human Life Cycle1,2
Magazine article from: The Journal of Nutrition; 6/1/2007; ; 700+ words
; Abstract Lysine cannot be synthesized by mammals and, as a consequence...is an indispensable amino acid. The main role of lysine is to participate in protein synthesis. The catabolism of lysine is principally located in the liver. Lysine released...
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Lysine capacity expands unduly.(lysine production technologies)
Magazine article from: China Chemical Reporter; 7/6/2006; ; 700+ words
; ...growth China started the research of process technologies for the lysine production rather late. Guangxi province started to construct lysine plants in 1987, but the output of lysine was only 17.7 thousand tons in 2000. Quite a few large lysine...
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Lysine [alpha]-Ketoglutarate Reductase and Lysine Oxidation Are Distributed in the Extrahepatic Tissues of Chickens1,2
Magazine article from: The Journal of Nutrition; 1/1/2005; ; 700+ words
; ABSTRACT In animals, lysine oxidation is thought to occur primarily via the activity of lysine α-ketoglutarate reductase (LKR...vitro ability of tissue homogenates to oxidize lysine. Additionally, the expression of LKR mRNA...
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L-Lysine.(Monograph)
Magazine article from: Alternative Medicine Review; 6/1/2007; 700+ words
; Introduction L-Lysine is classified as an essential amino acid...meaning the human body cannot synthesize lysine on its own and thus must rely on adequate...poultry, and milk are rich sources of lysine; proteins from grains, such as wheat...
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Lysine Content in Canine Diets Can Be Severely Heat Damaged1-3
Magazine article from: The Journal of Nutrition; 7/1/2006; ; 700+ words
; EXPANDED ABSTRACT KEY WORDS: * lysine * reactive lysine * dogs * pet food * heat damage The protein quality of a...long periods of time, the free ε-amino group of lysine can react with the carhonyl group of other compounds such...
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Lysine source affects ractopamine diets: it does not appear that lysine source in ractopamine diets has any effect on live weight gain, but carcass weight gain is affected. However, even with high corn prices, the use of high levels of synthetic amino acids is economically justified.(Nutrition & Health: Swine)
Magazine article from: Feedstuffs; 3/26/2007; ; 700+ words
; ...this article is to address the effect of lysine source (soybean meal or synthetic amino...standardized ileal digestible (SID) lysine level for pigs fed 4.5-6.75 g of...are fed for 28 days, the optimum SID lysine level decreases to 0.85% (Boyd et...
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Lysine, ideal profile for late-finishing broilers reviewed.(Nutrition And Health/Poultry)
Magazine article from: Feedstuffs; 6/7/2004; ; 700+ words
; ...with respect to the most studied one, lysine. Under periods of heat stress, the relationship of all essential amino acids to lysine remains the same, but an adjustment in the total level of dietary lysine of about +0.10% should be considered...
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Lysine, methionine act independently in broiler diets.(Nutrition And Health/Poultry)
Magazine article from: Feedstuffs; 5/3/2004; ; 700+ words
; Since lysine is set as the reference amino acid in the "ideal protein...of this concept by formulating for amino acids other than lysine by simply keeping an ideal ratio with lysine even though dietary lysine may be in excess of actual needs...
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Lysine
Encyclopedia entry from: Gale Encyclopedia of Alternative Medicine
Lysine Description Lysine is an amino acid not produced by the body, but essential to the growth...and growth, and for producing antibodies, enzymes, and hormones. Lysine is found in other protein sources, such as red meats, chicken, and...
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lysine
Book article from: The Columbia Encyclopedia, Sixth Edition
lysine , organic compound, one of the 20 amino...kilogram (10 mg per lb) of body weight. Lysine is found in particularly low concentrations...gluten, for example, is relatively poor in lysine. This deficiency in lysine is the reason...
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Combination of Proteins
Encyclopedia entry from: Encyclopedia of Food and Culture
...weight as meat, and are good sources of lysine, but lack methionine. Many vegetables...protein by weight, lacks methionine, lysine, and tryptophan, and is overrich in...typ), also limited in methionine and lysine, has less total protein than corn by...
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amino acids
Book article from: A Dictionary of Food and Nutrition
...x2014;histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine...Most cereal proteins are limited by lysine , and most animal and other vegetable...in the side‐chain. Three, lysine, arginine, and histidine, have basic...
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Carnitine
Encyclopedia entry from: Gale Encyclopedia of Alternative Medicine
...to form carnitine from the amino acids lysine and methionine , in addition to iron and...in deficiency. These nutrients include lysine, methionine, vitamin C , iron, niacin...of the building blocks for carnitine. Lysine and methionine are likely to be lacking...
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