Optimization of Microencapsulation Technology of Chinese Leek Seed Oil by Soybean Oil Body and Evaluation of Its Stability
Composite wall materials were prepared using sodium alginate(SA),gelatin(G),xanthan gum(XG),pectin(P),sodium starch octenyl succinate(SSOS),and Arabic gum(AG)combined with soybean oil bodies(SOB),with Chinese leek seed oil as the core material.Vacuum freeze-drying technology was employed to produce Chinese leek seed oil microcapsules.The embedding rate was used as an index to select the optimal wall material combination.Based on single-factor experiments,orthogonal experiments were conducted to optimize the microencapsulation process of Chinese leek seed oil and determine the optimal process parameters.The microstructure,thermal stability,and slow-release performance of the Chinese leek seed oil microcapsules were further investigated.The results showed that the optimal wall material combination was soybean oil bodies and gelatin,and the optimal process parameters were:wall material concentration of 2.0％,wall-to-core ratio of 2∶1 g/g,emulsification time of 6 minutes,and composite wall material ratio(soybean oil bodies∶gelatin)of 1∶1 g/g.Under these conditions,the embedding rate of the microcapsules reached 75.81％.Scanning electron microscopy and infrared spectroscopy analyses revealed that the microcapsules had an irregular and amorphous structure.Thermogravimetric analysis demonstrated that encapsulation significantly improved the thermal stability of Chinese leek seed oil.Over time,the release rate of the microcapsules was consistently lower than that of the oil itself,indicating that microencapsulation effectively slowed the release rate and reduced the degree of oxidation of Chinese leek seed oil.This study broadened the application prospects for Chinese leek seed oil and soybean oil bodies.
万方数据
维普
