以杜仲籽油苹果汁饮料为研究对象，用低温等离子体（放电功率为750 W，处理90、120、150、180 s）或热处理（65 ℃ 30 min、80 ℃ 20 min、90 ℃ 10 min和90 ℃ 15 min）进行杀菌，测定各理化指标进行分析比较。结果表明，等离子体和热处理后菌落总数均未检出，pH无显著变化（p>0.05）；等离子体处理使可溶性固形物含量最高增加17.73%，热处理影响不显著（p>0.05）；总酚和黄酮含量在等离子体处理后能较好保持，而热处理使黄酮含量最大降低6.34%；等离子体和热处理后总糖含量最大降幅分别为11.42%、20.48%，还原糖含量最大增幅分别为18.46%、10.34%；等离子体处理使饮料总酸含量最高增加26.23%；两种方法对抗氧化性均有一定程度的降低，但影响程度相近；在稳定性方面，热杀菌粒径最高增加8.19%，ζ-电位绝对值最大降低6.54%，而等离子体处理对ζ-电位无显著影响（p>0.05）。综合来说，较于热杀菌，低温等离子体杀菌更适合杜仲籽油苹果汁饮料，杀菌时间短，效率高，且能较好地保持其品质。

Eucommia ulmoides seed oil-apple juice beverage was used as the research object, and sterilized by cold plasma (discharge power 750 W, treatment 90, 120, 150 or 180 s) or thermal treatment (65 ℃ 30 min, 80 ℃ 20 min, 90 ℃ 10 min or 90 ℃ 15 min). The physical and chemical indexes were determined for analysis and comparison. The results showed that the total number of colonies was not detected for both the thermal treatment and cold plasma treatment with insignificant change in pH (p>0.05). The plasma treatments increased the soluble solids content (by up to 7.73%), whilst the heat treatments had insignificant effect (p>0.05). The total phenolic content and content of flavonoids were well maintained after the plasma treatments, whilst the thermal treatments decreased the flavonoids content (by up to 6.34%). The cold plasma treatment and heat treatment led to the maximum decreases of total sugar content by 11.42% and 20.48% respectively, and the maximum increases of reducing sugar content by 18.46% and 10.34% respectively. The cold plasma treatments increased the total acid content of the beverage (by up to 26.23%). Both treatments caused a certain degree of reduction in the antioxidant activity of the beverage, and the changes were similar. In terms of stability, the heat treatments increased the particle size by up to 8.19% and decreased the absolute value of ζ-potential by up to 6.54%. Whereas, the plasma treatments had insignificant effects on ζ-potential (p>0.05). In general, compared with thermal sterilization, cold plasma sterilization is more suitable for the Eucommia ulmoides seed oil-apple juice beverage, with a shorter sterilization time, higher efficiency and better maintenance of beverage quality.

海南省重点研发计划项目（ZDYF2021XDNY143）；河南省科技攻关项目（212102110345）