| abstract |
formula (I), in which Q1,-Q5 are, independently from each other, the hydroxyl radical or one of the salts thereof or a radical selected from the radicals caffeoyl, maloyl, caffeoyl maloyl and maloyl caffeoyl. At least one of Q1-Q5 is neither the radical —OH, nor one of the salts thereof; and c) between 20.0 wt. % and 35.0 wt. % of water. |