反应 #2320137

ord-78472cffd067490d93099f8fe510eeb4

反应方程式

O=C[C@H](O)[C@@H](O)[C@H](O[C@H]1O[C@H](CO[C@H]2O[C@H](CO)[C@@H](O)[C@H](O)[C@H]2O)[C@@H](O)[C@H](O)[C@H]1O)[C@H](O)CO
panose
→
OC[C@H]1O[C@H](OC[C@H]2OC(O)[C@H](O)[C@@H](O)[C@@H]2O)[C@H](O)[C@@H](O)[C@@H]1O
Isomaltose

反应物

O=C[C@H](O)[C@@H](O)[C@H](O[C@H]1O[C@H](CO[C@H]2O[C@H](CO)[C@@H](O)[C@H](O)[C@H]2O)[C@@H](O)[C@H](O)[C@H]1O)[C@H](O)CO
panose
—
α-isomaltosylmaltose
—
saccharide

试剂

无

溶剂

O
water

反应条件

详细条件
See reaction.notes.procedure_details.

后处理

  1. 1
    workup.ADDITIONα-isomaltosyltriose, α-isomaltosyltetraose, or cyclotetrasaccharide, were added 100 units/g solid of an isomaltodextranase specimen
  2. 2
    其他obtained by the method in Experiment 15
  3. 3
    其他to react at 40° C.
  4. 4
    workup.WAITkept at 100° C. for 20 min
  5. 5
    其他80° C., inner column temperature

实验过程

To an aqueous solution having a final solid concentration of 0.2% (w/v) of panose, α-isomaltosylmaltose, α-isomaltosyltriose, α-isomaltosyltetraose, or cyclotetrasaccharide, were added 100 units/g solid of an isomaltodextranase specimen, obtained by the method in Experiment 15, except for using 100 or 3,000 units of the specimen for the aqueous solution of cyclotetrasaccharide, allowed to react at 40° C. and pH 5.5 for 24 hours, and kept at 100° C. for 20 min to suspend the enzymatic reactions. The saccharide composition for each reaction mixture was determined on HPLC. The conditions used in HPLC were: Column, “MCIGEL CK04SS” comercialized by Mitsubishi Chemical Industries, Ltd., Tokyo, Japan; 80° C., inner column temperature; 0.5 ml/min, a flow rate of water as an eluent; and detection, “RI-8012”, a diffraction refractometer commercialized by Tosoh Corporation, Tokyo, Japan. The results are in Table 18.

来源

DOI: 10.6084/m9.figshare.5104873.v1专利: US07709230B2uspto-grants-2010_05