Molecular and crystal structure of konjac glucomannan in the mannan II polymorphic form.

@article{Yui1992MolecularAC,
  title={Molecular and crystal structure of konjac glucomannan in the mannan II polymorphic form.},
  author={Tokuo Yui and Kozo Ogawa and A. Sarko},
  journal={Carbohydrate research},
  year={1992},
  volume={229 1},
  pages={41-55}
}
A probable crystal structure of konjac glucomannan (mannose:glucose ratio = 1.6) is proposed based on X-ray data and constrained linked-atom least-squares model refinement. The structure crystallizes in the mannan II polymorphic form, in an orthorhombic unit-cell with a = 9.01 A, b = 16.73 A, c (fiber axis) = 10.40 A, and a probable space group I222. The backbone conformation of the chain is a two-fold helix stabilized by intramolecular O-3-O-5' hydrogen bonds, with the O-6 rotational position… CONTINUE READING