通过α-甘露糖苷酶的转移作用,由甲基α-甘露糖苷和麦芽三糖合成α-D-甘露糖基-麦芽三糖(Man-G3)。当将产气细菌产气链球菌支链淀粉酶(每1克Man-G3含160个单位)与1.6的混合物孵育时,分别产生(Man-G3)-betaCD和(Man-G3)2-betaCD的产率为20%和4%。 M Man-G3和0.16 M betaCD在50摄氏度下放置4天。在YMC-PACK A-323-3色谱柱上通过HPLC分析将反应产物(Man-G3)-βCD分离为三个峰,在Daisopak上通过HPLC分析将(Man-G3)2-betaCD分离为几个峰ODS栏。(Man-G3)-βCDs的主要产物通过FAB-MS和NMR光谱鉴定为6-O-α-(6(3)-O-α-D-甘露糖基麦芽三糖基)-βCD。(Man-G3)2-betaCDs的结构通过TOF-MS和NMR光谱分析,并通过在石墨化碳柱上通过α-甘
The present invention relates to the use of a special class of oligosaccharides, herein called iso-oligosaccharides, for flavour generation during thermal processing of food. The invention also relates to the use of such oligosaccharides in the form of individual compounds, or as mixtures thereof, or in the form of ingredients comprising the individual compounds or mixtures thereof, or as enzymatic or fermented preparations containing the individual compounds or mixtures thereof.
Synthesis of Novel Heterobranched β-Cyclodextrins from α-<scp>D</scp>-Mannosyl- Maltotriose and β-Cyclodextrin by the Reverse Action of Pullulanase, and Isolation and Characterization of the Products
Alpha-D-mannosyl-maltotriose (Man-G3) were synthesized from methyl alpha-mannoside and maltotriose by the transfer action of alpha-mannosidase. (Man-G3)-betaCD and (Man-G3)2-betaCD were produced in about 20% and 4% yield, respectively when Aerobacter aerogenes pullulanase (160 units per 1 g of Man-G3) was incubated with the mixture of 1.6 M Man-G3 and 0.16 M betaCD at 50 degrees C for 4 days. The reaction
通过α-甘露糖苷酶的转移作用,由甲基α-甘露糖苷和麦芽三糖合成α-D-甘露糖基-麦芽三糖(Man-G3)。当将产气细菌产气链球菌支链淀粉酶(每1克Man-G3含160个单位)与1.6的混合物孵育时,分别产生(Man-G3)-betaCD和(Man-G3)2-betaCD的产率为20%和4%。 M Man-G3和0.16 M betaCD在50摄氏度下放置4天。在YMC-PACK A-323-3色谱柱上通过HPLC分析将反应产物(Man-G3)-βCD分离为三个峰,在Daisopak上通过HPLC分析将(Man-G3)2-betaCD分离为几个峰ODS栏。(Man-G3)-βCDs的主要产物通过FAB-MS和NMR光谱鉴定为6-O-α-(6(3)-O-α-D-甘露糖基麦芽三糖基)-βCD。(Man-G3)2-betaCDs的结构通过TOF-MS和NMR光谱分析,并通过在石墨化碳柱上通过α-甘