Presence and dehydration of ikaite, calcium carbonate hexahydrate, in frozen shrimp shell.

@article{Mikkelsen1999PresenceAD,
  title={Presence and dehydration of ikaite, calcium carbonate hexahydrate, in frozen shrimp shell.},
  author={Anders Mikkelsen and Alf Andersen and S\oren Balling Engelsen and Hans Christian Bruun Hansen and Olav Larsen and Leif H Skibsted},
  journal={Journal of agricultural and food chemistry},
  year={1999},
  volume={47 3},
  pages={911-7}
}
Ikaite, calcium carbonate hexahydrate, has by means of X-ray diffraction analyses of frozen samples been identified as the mineral component of the white spots formed in the shell of frozen shrimp during storage. When the shrimp thaw and the shell material is dried and kept at room temperature, ikaite rapidly transforms into a mixture of anhydrous calcium carbonate forms. X-ray diffraction analyses and Raman spectra of synthetic ikaite as well as the dehydration product confirm the assignments… CONTINUE READING