To provide a novel gelling agent containing a sugar derivative.A gelling agent comprising a compound represented by the following formula (1) or formula (2):Embedded image Wherein R1Is a linear or branched alkyl group having 9 to 20 carbon atoms, a cyclic alkyl group having 13 to 20 carbon atoms, or a linear or branched alkenyl group having 9 to 20 carbon atoms , R2Represents a hydrogen atom, a linear or branched alkyl group having 1 to 10 carbon atoms, or an aryl group which may have a substituent, and R3And R4Represents a hydroxy group. ]BACKGROUND OF THE INVENTION【課題】糖誘導体を含む新規なゲル化剤を提供すること。【解決手段】下記式(1)又は式(2)で表される化合物からなるゲル化剤。【化1】[式中、R1は、炭素原子数9乃至20の直鎖状若しくは分岐鎖状のアルキル基、炭素原子数13乃至20の環状のアルキル基、又は炭素原子数9乃至20の直鎖状若しくは分岐鎖状のアルケニル基を表し、R2は、水素原子、炭素原子数1乃至10の直鎖状又は分岐鎖状のアルキル基、又は置換基を有していてもよいアリール基を表し、R3及びR4は、ヒドロキシ基を表す。]【選択図】図1