Abstract: The staining effect (particularly with respect to the staining of polyamides) of a colorant such as a dye used in foods and beverages is inhibited by a compound of the formula ##STR1## wherein: Z.sup.1, Z.sup.2, and Z.sup.3 are the same or different and are each a bridging radical or a direct bond,Ar.sup.1, Ar.sup.2, and Ar.sup.3 are the same or different and are aromatic or bicyclic radicals;Q is a fused, partially aromatic bicyclic radical,or Q is a carbohydrate residue having a non-repeating structure, in which case m is 1, or Q is a carbohydrate having repeating saccharide units, in which case Q along with its substituents is repeated m times, where m is the number of said repeating saccharide units, butwhen Q is not a carbohydrate residue, m is 1;R.sup.1, R.sup.2, and R.sup.3 are H or polyhydroxybenzoyl,R.sup.4, R.sup.5 and R.sup.