External composition containing polyunsaturated fatty acid...

C - Chemistry – Metallurgy – 09 – K

Patent

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C09K 15/06 (2006.01) A23D 9/00 (2006.01) A23D 9/007 (2006.01) A23D 9/013 (2006.01) A23K 1/16 (2006.01) A61K 8/36 (2006.01) A61K 8/37 (2006.01) A61K 8/67 (2006.01) A61K 8/97 (2006.01) A61K 31/202 (2006.01) A61K 31/232 (2006.01) A61K 31/341 (2006.01) A61P 37/08 (2006.01) A61Q 19/00 (2006.01) C09K 15/34 (2006.01) C11B 5/00 (2006.01)

Patent

CA 2506611

Antioxidant component of sesame and ascorbic acid or an ascorbic acid fatty acid ester are added to a highly unsaturated fatty acid or its salt or ester. In particular, sesame antioxidant component, ascorbic acid or an ascorbic acid fatty acid ester and an external base are mixed with a sensually odorless highly unsaturated fatty acid of 3.0 or below PV and 1.0 or below AV or its salt or ester or a fat or oil containing the same in an atmosphere suppressing the interfusion of oxygen or in a manner in which the interfusion of oxygen is inhibited and quickly poured in a sealed container. Thus, there can be obtained an external composition containing a highly unsaturated fatty acid or its salt or ester, which external composition exhibits enhanced oxidation stability, inhibits the generation of odor peculiar to the oxidation of highly unsaturated fatty acid and also inhibits the formation of peroxides.

Selon l'invention, un constituant antioxydant du sésame et un acide ascorbique ou un ester d'acide gras de l'acide ascorbique sont ajoutés à un acide gras fortement insaturé ou à son sel ou ester. En particulier, un constituant antioxydant du sésame, un acide ascorbique ou un ester d'acide gras de l'acide ascorbique et une base d'application externe sont mélangés avec un acide gras fortement insaturé inodore d'au plus 3,0 PV et d'au plus 1,0 AV, ou avec son sel ou ester, ou avec une matière grasse contenant les mêmes substances, dans un environnement qui supprime l'interfusion d'oxygène, ou d'une manière telle que l'interfusion d'oxygène est inhibée. Le mélange est ensuite versé rapidement dans un récipient hermétique. On obtient ainsi une composition d'application externe contenant un acide gras fortement insaturé ou son sel ou ester. Cette composition présente une stabilité d'oxydation améliorée, inhibe l'émission de l'odeur particulière à l'oxydation d'un acide gras fortement insaturé, et inhibe en outre la formation de peroxydes.

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