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Abstract

Disclosed is a process for preparing alkyl polyglycosides having a color of less than or equal to 1.5 VCS, the method successively comprising: (a) a glycosylation step (a), consisting in a reaction between at least one alcohol of formula (I) and at least one reducing sugar of formula (III): H—O-(G)-H (III), in the presence of at least one acid catalyst (CA), at a minimum temperature of 100° C. and a maximum temperature of 120° C.; (b) a step (b) of pre-neutralizing the reaction medium resulting from step (a); (c) a step (c) of removing the reducing sugar of formula (III), which has not reacted in step (a), from the pre-neutralized reaction medium obtained in step (b); (d) a step (d) of neutralizing the reaction medium resulting from step (c) with an aqueous solution comprising a basic agent (Ab); and (e) a step (e) of recovering at least one composition (C) having a color less than or equal to 1.5 VCS.

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