低温等离子体处理对鲜切猕猴桃片质构及理化特性的影响
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陕西省重点研发计划项目(2020NY-099)


Effects of Low Temperature Plasma Treatment on Texture and Physicochemical Properties of Fresh-cut Kiwi Slices
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    摘要:

    研究低温等离子体电压及处理时间对鲜切猕猴桃片质构及理化特性的影响,为低温等离子体技术应用于鲜切猕猴桃片的非热杀菌保鲜提供理论依据。以“海沃德”猕猴桃鲜切片为试验材料,分别进行不同时间(70,90,110,130,150 s)、电压(5,15,25,35,45 kV)的低温等离子体处理,测定其硬度、脆性、SSC、TA、可溶性糖、总酚、叶绿素、VC、POD活性、APX活性、L*值、a*值和b*值,分析处理时间和电压对鲜切猕猴桃片质构及理化特性的影响。结果表明,低温等离子体处理对鲜切猕猴桃片中SSC、TA及色泽的影响不显著(P>0.05);处理组样品的硬度、脆性、可溶性糖、总酚、叶绿素、VC、POD及APX活性变化显著(P<0.05);处理组样品中POD和APX活性均显著低于对照组(P<0.05);等离子体处理能延缓猕猴桃片的色泽变化。结论:低温等离子体处理能较好地保持鲜切猕猴桃片原有色泽、口感与营养品质,延长货架期,可用于鲜切猕猴桃片的非热杀菌保鲜。

    Abstract:

    The effects of low temperature plasma voltage and treatment time on the texture and physicochemical properties of fresh-cut kiwi slices were studied to provide theoretical basis for the application of low temperature plasma technology in the non-thermal sterilization and preservation of fresh-cut kiwi slices. Using fresh-cut 'Hayward' kiwi slices as raw materials, they were treated with different times (70, 90, 110, 130, 150 s) and different voltages (5, 15, 25, 35, 45 kV) by low temperature plasma treatment. The hardness, brittleness, SSC, TA, soluble sugar, total phenol, chlorophyll, VC, POD activity, APX activity, L* value, a* value and b* value were determined, and analyzed the effect of different voltages and different times on the texture and physicochemical properties of fresh-cut kiwi slices. The results showed that low temperature plasma treatment had no significant effect on SSC, TA and color in fresh-cut kiwi slices (P > 0.05); the hardness, brittleness, soluble sugar content, total phenol, chlorophyll, VC, POD and APX activities of the samples in the treatment group all changed significantly (P < 0.05); POD and APX activities in the treatment group samples were significantly lower than the control group (P < 0.05); plasma treatment can delay the color change of fresh-cut kiwi slices. Results: Low temperature plasma treatment can better maintain the original color, taste and nutritional quality of fresh-cut kiwi slices, extend shelf-life, and can be used for non-thermal sterilization and preservation of fresh-cut kiwi slices.

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解梦梦,赵武奇,贾梦科,孟永宏,高贵田,邓 红.低温等离子体处理对鲜切猕猴桃片质构及理化特性的影响[J].中国食品学报,2021,21(10):133-142

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  • 在线发布日期: 2021-11-22
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