| http://www.w3.org/ns/prov#value | - use, the method comprising adding to the formulation an effective amount of a compound of formula (I) R1???O-(G)x-H (I) wherein, x represents a decimal number between 1 and 5, G represents a reducing sugar residue, and R1 represents a monovalent radical of formula (A): ???CH2???(CHOH)n???CH2???OH (A) wherein n is an integer equal to 2, 3 or 4, or R1 represents a monovalent radical of formula (B):
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