The present invention is 3-methyl-propionamide seleno-relates to a novel process for preparing 2-hydroxy-4-methyl-selenomethionine from the aldehyde acid. 2-hydroxy-4-methyl selenoamino acid is obtained as a mixture of the singly or a sulfur-containing analogs. The present invention also provides 2-hydroxy-4-methyl-selenomethionine acid and 2-hydroxy-4-methylthio mixture of hydroxy acid, and a composition comprising a physiologically acceptable medium, in particular the nutritional composition, and the expression of the mixture component relates to the use as (dietary ingredient).2-hydroxy-4-methyl-selenomethionine acid, 2-hydroxy-4-methylthio butyric acid, nutritional compositions, dietary ingredients본 발명은 3-메틸셀레노프로피온-알데하이드로부터 2-하이드록시-4-메틸셀레노부티르산을 제조하는 신규 방법에 관한 것이다. 2-하이드록시-4-메틸셀레노부티르산은 단독으로 또는 그의 황 함유 유사체와의 혼합물로서 얻어진다. 본 발명은 또한 2-하이드록시-4-메틸셀레노부티르산 및 2-하이드록시-4-메틸티오부티르산의 혼합물, 및 생리학적으로 허용가능한 매질을 포함하는 조성물, 특히 영양 조성물, 및 상기 혼합물의 식이성분(dietary ingredient)으로서의 용도에 관한 것이다.
