منابع مشابه
The Isolation of Amino Acids from Mixtures
1. The separation ofthe dinitrophenyl derivatives ofmethionine, leucine (together with isoleucine), phenylalanine, ornithine, lysine and tyrosine from each other, and from the dinitrophenyl derivatives of the other protein amino acids, by partition chromatography on columns is described. 2. The harmful effect on resolving power of using too close-fitting a packing tool in preparing these partit...
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Estimation of efflux of amino acids from the viammalian lens indicates it is of small magnitude compared to influx at equivalent nonsaturating levels of substrate. This finding is a necessary part of the explanation of the complex problem of the maintenance of elevated, intracellular levels of these substances. Accelerative countertransport was observed when appropriate amino acids were present...
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I n human dietary guides it is pointed out that 10 amino acids are essential and must be supplied in the diet. Since all 20 coded amino acids are required by every organism, we may assume that the remaining 10 are synthesized by human metabolism from other ingested molecules. Keeping the above in mind, let us consider the synthesis of amino acids in reductive chemoautotrophs, believed to be the...
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Coral reefs are one of the most important marine ecosystems, providing habitat for approximately a quarter of all marine organisms. Within the foundation of this ecosystem, reef-building corals form mutualistic symbioses with unicellular photosynthetic dinoflagellates of the genus Symbiodinium. Exposure to UV radiation (UVR) (280 to 400 nm) especially when combined with thermal stress has been ...
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گوشت قرمز یکی از مهم ترین فرآورده های دامی در تأمین پروتئین و انرژی می باشد که در حمل ویتامین های محلول در چربی نیز حائز اهمیت می باشد. انسان مانند سایر مهره داران اسید های چرب ضروری (لینولئیک و آلفا لینولنیک) مورد نیاز خود از طریق غذا تأمین می نماید. اسید های چرب ضروی پیش ساز اسید های چرب غیر اشباع با چند پیوند دوگانه هستند. اسید لینولنیک پیش ساز اسیدهای چرب امگا 3 و اسید لینولئیک نیز پیش ساز ...
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ژورنال
عنوان ژورنال: Chemistry of Natural Compounds
سال: 1973
ISSN: 0009-3130,1573-8388
DOI: 10.1007/bf00565728