and market demand continues to rise.

β-Cyclodextrin has low cost and simple production process. It is currently the only cyclodextrin product that can be produced on a large scale and is widely used. Hydroxypropyl-β-cyclodextrin (HP-β-CD) is an etherified derivative of β-cyclodextrin, which is produced by the condensation reaction of β-cyclodextrin and 1,2-epoxypropane. Hydroxypropyl-β-cyclodextrin is easily soluble in water, has high safety…