WANG Bing, PU Yi-qiong, XU Ben-liang, et al. Prescription Optimization and Expiration Term Prediction of 20 ()-Protopanaxadiol Self-microemulsion Drug Delivery System[J]. Chinese journal of experimental traditional medical formulae, 2016, 22(22): 1-6.
WANG Bing, PU Yi-qiong, XU Ben-liang, et al. Prescription Optimization and Expiration Term Prediction of 20 ()-Protopanaxadiol Self-microemulsion Drug Delivery System[J]. Chinese journal of experimental traditional medical formulae, 2016, 22(22): 1-6. DOI: 10.13422/j.cnki.syfjx.2016220001.
Objective: To optimize prescription of 20 (S)-protopanaxadiol self-microemulsifying drug delivery system (PPD-SMEDDS) and predict its expiration term. Method: Ratio of oleic acid in oil phase
ratio of oil phase and ratio of emulsifier to co-emulsifier were selected as independent variables.Drug loading
particle size
Zeta-potential and dissolution of PPD in 10 min were set as dependent variables.Central composite design-response surface methodology was applied to optimize prescription of PPD-SMEDDS
and then its preparation technology was investigated by single factor tests.Q10 method was adopted to predict the expiration term by the accelerated test at high temperature. Result: Optimal prescription was as following
ratio of oleic acid in oil phase was 84.09%
ratio of oil phase was 30%
ratio of emulsifier to co-emulsifier was 2.58:1.Under these conditions
drug loading was 102.22 mg·g-1
the particle size was 39.67 nm
the Zeta potential was -13.1 mV
dissolution of PPD in 10 min was 75.01%.The process parameters were determined as:magnetic stirring
the mixing speed of 400 r·min-1
the mixing time of 30 min
the mixing temperature of 45℃.The expiration term at room temperature of PPD-SMEDDS was about 1.51 years by Q10 method. Conclusion: These optimized processes are stable and feasible with good stability of samples
which can provide some research data for the new preparations exploration of PPD.