Application of β-cyclodextrin and pickering emulsion to enhance the ozone stability of Acorus tatarinowii and Atractylodes lancea volatile oils.

This study aimed to evaluate the stability and quality enhancement of Acorus tatarinowii and Atractylodes lancea volatile oils (ATaAL-VO) and their β-cyclodextrin encapsulated and Pickering emulsion forms under ozone exposure. Under an ozone environment, ATaAL-VO were subjected to three treatments: raw oil, β-cyclodextrin encapsulated oil, and pickering emulsion. Peroxide values were quantified. GC-MS was employed to identify compositional variances, while t-tests were used to identify compounds with significant quantitative differences. PCA charts were generated using OmicShare, and line diagrams were created with Rmisc and reshape2. OmicShare was also utilized to construct Upset diagrams for filtering qualitative differential compounds, and charts illustrating newly formed and disappeared qualitative differential compounds were composed. Principal compounds' box diagrams were crafted through reshape2 and ggplot2. The β-cyclodextrin and pickering emulsion groups exhibited lower oxidation levels compared to the original oil group after ozone exposure. The pickering emulsion and β-cyclodextrin encapsulation groups both demonstrated a marked improvement in the stability of the majority of volatile components. The stability and quality of ATaAL-VO can be markedly enhanced through β-cyclodextrin encapsulation or Pickering emulsion preparation, with the latter offering distinct advantages.