For efficient extraction of cyclic amino acids, it has been proposed to use polymers based on N-vinylformamide. The extraction of phenylalanine, tyrosine, histidine, and proline in two-phase systems based on poly-N-vinylformamide and N-vinylformamide–N-vinylimidazole copolymer has been studied for the first time. Systems with the maximum recovery rate of individual amino acids have been found. The mechanism of intermolecular interactions in polymer–amino acid systems has been proposed. The results of extraction of a phenylalanine–tyrosine mixture by a N-vinylformamide–N-vinylimidazole copolymer are reported. An electrophoretic method for determining amino acids in extracts is proposed.

中文翻译：

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基于 N-乙烯基甲酰胺的萃取系统，用于萃取和分离环状氨基酸

为了有效提取环状氨基酸，有人建议使用基于 N-乙烯基甲酰胺的聚合物。首次研究了基于聚-N-乙烯基甲酰胺和N-乙烯基甲酰胺-N-乙烯基咪唑共聚物的两相系统中苯丙氨酸、酪氨酸、组氨酸和脯氨酸的提取。已经找到了具有最大单个氨基酸回收率的系统。已经提出了聚合物-氨基酸系统中分子间相互作用的机制。报告了用 N-乙烯基甲酰胺-N-乙烯基咪唑共聚物提取苯丙氨酸-酪氨酸混合物的结果。提出了一种测定提取物中氨基酸的电泳方法。