6CHOOH 6CH2OH 豆O 耳/H OH H OHⅡ OH Lactose (B form) B-D-galactopyranosyl-(1-4)-B-D-glucopyranose Gal(B1→4)Glc 6CH.OH HOCH2 O. 互O c互aOH OH DH H Sucrose B-D-fructofuranosyl o-D-glucopyranoside Fru(P2←1c)Glc BCH.OH HOCH OH OH H OH H HO HI OH 海藻糖 O Trehalose a-D-glucopyranosyl a-D-glucopyranoside Glc(celelceGlcCommon Disaccharides 海藻糖