Isomaltose

Isomaltose is a disaccharide similar to maltose, but with a α-(1-6)-linkage instead of the α-(1-4)-linkage. Both of the sugars are dimers of glucose, which is a pyranose sugar. Isomaltose is a reducing sugar. Isomaltose is produced when high maltose syrup is treated with the enzyme transglucosidase (TG) and is one of the major components in the mixture isomaltooligosaccharide.

For a disaccharide polyol derived from sucrose, see isomalt. For a disaccharide derived from sucrose, see isomaltulose.
Isomaltose
Names
IUPAC name
6-O-α-D-Glucopyranosyl-D-glucopyranose
Other names
O-α-D-glucopyranosyl-α[1-6]-α-D-glucopyranoside
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.007.164
MeSH Isomaltose
UNII
  • InChI=1S/C12H22O11/c13-1-3-5(14)8(17)10(19)12(23-3)21-2-4-6(15)7(16)9(18)11(20)22-4/h3-20H,1-2H2/t3-,4-,5-,6-,7+,8+,9-,10-,11?,12+/m1/s1 ☒N
    Key: DLRVVLDZNNYCBX-RTPHMHGBSA-N ☒N
  • InChI=1/C12H22O11/c13-1-3-5(14)8(17)10(19)12(23-3)21-2-4-6(15)7(16)9(18)11(20)22-4/h3-20H,1-2H2/t3-,4-,5-,6-,7+,8+,9-,10-,11?,12+/m1/s1
    Key: DLRVVLDZNNYCBX-RTPHMHGBBU
  • O(C[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O)[C@H]2O[C@@H]([C@@H](O)[C@H](O)[C@H]2O)CO
Properties
C12H22O11
Molar mass 342.297 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

It is a product of the caramelization of glucose. [1]

See also

References
  1. Sugisawa, Hirqshi; Edo, Hiroshi (1966). "The Thermal Degradation of Sugars I. Thermal Polymerization of Glucose". Journal of Food Science. 31 (4): 561. doi:10.1111/j.1365-2621.1966.tb01905.x.
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