| abstract |
The invention relates to a preparation having antioxidant properties, comprising at least one compound of the formula I n n n where R 1 to R 10 may be identical or different and are selected from H, OR 11 , straight-chain or branched C 1 - to C 20 -alkyl groups, straight-chain or branched C 3 - to C 20 -alkenyl groups, straight-chain or branched C 1 - to C 20 -hydroxyalkyl groups, where the hydroxyl group may be bonded to a primary or secondary carbon atom of the chain and furthermore the alkyl chain may also be interrupted by oxygen, and/or C 3 - to C 10 -cycloalkyl groups and/or C 3 - to C 12 -cycloalkenyl groups, where the rings may each also be bridged by —(CH 2 ) n — groups, where n=1 to 3, where all OR 11 are, independently of one another, OH, C 1 - to C 20 -alkoxy groups, C 3 - to C 20 -alkenyloxy groups, straight-chain or branched C 1 - to C 20 -hydroxyalkoxy groups and/or C 3 - to C 10 -cycloalkoxy groups and/or C 3 - to C 12 -cycloalkenyloxy groups, where the rings may each also be bridged by —(CH 2 ) n — groups, where n=1 to 3, and/or mono- and/or oligoglycosyl radicals, with the proviso that at least 3 radicals from R 1 to R 7 are OH and that at least 2 pairs of adjacent —OH groups are present in the molecule, or R 2 , R 5 and R 6 are OH and the radicals R 1 , R 3 , R 4 and R 7-10 are H. |