Optimization Process of Hexerolein Nanoemulsion and Its Effect on Chitosan Membranes
In order to solve the problems of water insolubility and unstable properties of hexenal in application,the nanoemulsion of hexenal was prepared with Tween-80 and xanthan gum by the high-speed shear-ultrasonic crushing method.Using particle size and polydispersion index as indexes,the process parameters of preparing hexenal nanoemulsion were optimized by single factor and orthogonal experiments,and the nanoemulsion was characterized.The results show that when the mass fractions of Tween-80 and xanthan gum are respectively 2%and 0.3%,the volume fraction of hexenal is 8%,and the ultrasound time is 8 min,the nanoparticle emulsion exhibits the smallest particle size,the lowest polydispersity index and the highest stability.The nanoemulsion exhibits good stability when the processing temperature is-20-50℃,the pH value is 2-10 and the ion concentration is 100-500 mmol/L.Additionally,the nanoparticle emulsion system has enhanced antimicrobial properties,suggesting an improved utilization of hexenal.The composite membrane was prepared by combining the emulsion with chitosan.This improves the water-blocking and bacteriostatic properties of the chitosan membranes and broadens the application ranges of chitosan membranes and hexenal.
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