Пожалуйста, помогите перевести....

[Михаил]

с английского на родной слово "underivatised", относящееся к органической или биохимии. Контексты для подсказки:
"...Only an isomerase that would use underivatised glucose as its substrate would be commercially useful but, until the late 1950s, the existence of such an enzyme..."
"More recently, the same receptors were used to separate underivatised amino acid racemic mixtures in capillary electrophoresis by the same mechanism..."
Вообще-то в оригинальном тексте стоит GLC (Underivatised), т. е. Газово-жидкостная хроматография (чего?????????).

Заранее благодарен!

М.[/b]

[прохожий]

может быть "расфасованный по бочкам/канистрам" ?

[Михаил]

[Оltek]

derivatised-производный,-ая.
un...-не

[wigrafzrolok]

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