Study on the inclusion of wintergreen oil with HP-β-CD and its insecticidal activity.

【Objective】The study was to investigate the processing for HP-β-CD-inclusion of wintergreen oil and insecticidal activity of its formulation.【Method】The orthogonal design was used for the optimization of inclusion conditions.With the transformation rate of the wintergreen oil in inclusion complex and the yield of inclusion complex as the evaluation indexes,the mass ratio of HP-β-CD to oil,the temperature and the inclusion time were used as the main factors of L16(45)orthogonal design.【Result】The optimal conditions for inclusion were as follows:the mass ratio of HP-β-CD to oil 10∶1,a saturated water solution,inclusion temperature at 45℃,and stirring for 2.0h.The inclusion complex formulation diluted 250 tmies exhibited a good control efficacy against Macrosiphoniella sanborni and its quick-acting was worse than EC but the persistent effects was better.【Conclusion】The optimal conditions for HP-β-CD-inclusion of wintergreen oil were steady and feasible.The inclusion complex formulation exhibited a good and persistent control efficacy against Macrosiphoniella sanborni.