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Yazep Yanovich Spruz

Gunar Y Dubur

Solomon Aronovich Giller

Gunar Jamovich Tirzit

Vitaly Evgenievich Ronis

Ivan Markovich Zakharchenko

Andrei Robertovich Valdman

Ian Rikhardovich Uldrikis

Alexandr Andrejevich Makarov

New stabilizers for carotene, which retard its oxidation and protect it against destruction, and which are 3,5-di-carbonyl derivatives of 2,6-dimethyl-1,4-dihydropyridine, conforming to the general formula ##SPC1## Where R is a lower alkyl, such as methyl, or an alkoxy, such as an ethoxy group. The introducing of said stabilizers into fodder products for animals such as, for instance, into grass four, makes it possible to preserve valuable nutritive properties of such products during a long period of time, of at least 6 months.

Carotene stabilizers and stabilization of carotene

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Yazep Yanovich Spruz