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Isolation of Amino Acids from Natural Samples Using Sublimation

机译:用升华法从天然样品中分离氨基酸

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Amino acids have appreciable vapor pressures above 150 ℃ and will sublime under partial vacuum at elevated temperatures without any racemization or decomposition. The recoveries of several amino acids including aspartic acid, serine, glycine, alanine, α-aminoisobutyric acid, and valine were optimized by varying the temperature and duration of sublimation. Sublimation has been shown to be a rapid and effective technique for the isolation of amino acids from natural samples for enantiomeric analyses and a good substitute for conventional cation-exchange desalting techniques.
机译:氨基酸的蒸气压高于150℃,在升高的部分真空下会升华,而不会发生外消旋或分解。通过改变温度和升华时间优化了天冬氨酸,丝氨酸,甘氨酸,丙氨酸,α-氨基异丁酸和缬氨酸等几种氨基酸的回收率。升华已被证明是一种从天然样品中分离氨基酸进行对映体分析的快速有效的技术,并且是常规阳离子交换脱盐技术的良好替代品。

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