Dissociation characteristic of the inclusion complex of cyclomaltohexaose (α-cyclodextrin) with 1-methylcyclopropene in response to stepwise rising relative humidity

Tze Loon Neoh, Katie Koecher, Gary Reineccius, Takeshi Furuta, Hidefumi Yoshii

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Abstract

The dissociation of a crystalline complex of cyclomaltohexaose (α-cyclodextrin) and 1-methylcyclopropene has been studied in response to stepwise rising relative humidity at 50 °C using a dynamic vapor sorption instrument. The dissociation of the inclusion complex was monitored with a proton transfer reaction mass spectrometer. The increase in relative humidity generally triggered the complex dissociation. However, the dissociation was greatly retarded at 80% relative humidity, presumably owing to collapse of the crystalline structure. Abrupt dissociation was observed at 90% relative humidity which corresponded to complex dissolution. The changes in powder X-ray diffraction pattern of the inclusion complex during the storage period were also investigated.

Original languageEnglish (US)
Pages (from-to)2085-2089
Number of pages5
JournalCarbohydrate Research
Volume345
Issue number14
DOIs
StatePublished - Sep 23 2010

Keywords

  • 1-Methylcyclopropene
  • Cyclomaltohexaose
  • Dissociation
  • Relative humidity
  • α-Cyclodextrin

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