Quantitative Analysis by X-Ray Diffraction of the Inclusion Complex Formed by d-Limonene in a β-Cyclodextrin/Maltodextrin Mixed Powder

Abstract

The level of the inclusion complex between β-cyclodextrin (β-CD) and d-limonene in a pure β-CD and β-CD/maltodextrin mixed powder was measured by X-ray diffraction. The relative integral intensity at 2θ=5-7° and 11-12° correlated well with the molar fraction of d-limonene to the total moles of β-CD and the maltodextrin mixture. Solid state ¹³C-CP/MAS NMR results correlated well with those by X-ray diffraction.