γ-环糊精的结构性能参数

	g
Number of glucose units	8
Molecular	1297
Solubility in water g/100ml at ambient temp.	23.2
[α]D25	177.4±0.5
Cavity diameter Å	7.5-8.3
Height of torus	7.9±0.1
Dia. of periphery	17.5±0.4
Vol. of cavity(approx.)Å	472
Cavity vol (approx.): per mol  CD. mls per lg CD  mls	265 0.20
Crystal forms（from water）	Quadratic prisms
Crystallographic params. C1-C4-C4 angle	112.6
φ/φº	165/-169
O4---O4  distance Å	4.48
O2---O3   distance Å	2.31
Crystal water wt%	8.13-17.7
Diffusion const.40ºC	3000
Hydrolysis by A. oryzae α-amylase	Rapid
Vmaxvalue min-1	2300
Relative permittivity	70.0 39.5
Pk (by potentionmetry) 25ºC	12.081
Partial molar volumes in solution ml/mol	801.2
Adiabatic compressidbility
In aqueous soln.ml.mol-1.bar-1.104	-5.0

 

特点及应用：

γ-环糊精具有比b-环糊精更大的空腔，所以空腔可包合的客体分子范围更广；更好的水溶性，室温25℃时γ-环糊精溶解度为25.6g/100ml，而α-环糊精溶解度为12.7g/100ml水、b-环糊精溶解度则只有1.88g/100ml水。应用前景比b-环糊精更为广阔，但目前由于生产规模较小，所以价格较高，限制了应用的推广。