Effect of cold plasma treatment on physico-chemical parameters and antioxidant activity of minimally processed kiwifruit
Effect of cold plasma treatment on physico-chemical parameters and antioxidant activity of minimally processed kiwifruit
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DOI：
10.1016/j.postharvbio.2015.04.008
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发表时间：
2015-09-01
影响因子：
7
通讯作者：
Rocculi, Pietro
中科院分区：
文献类型：
--
作者：
Ramazzina, Ileana;Berardinelli, Annachiara;Rocculi, Pietro
大气等离子体处理对不同种类的食品的微生物去污的功效是已知的。最近，已经提出了这种创新技术的新应用，以测试最低限度加工的水果和蔬菜的质量保持的改进。然而，关于微加工水果的功能和营养特性的改变的知识仍然是稀缺的，本研究的目的是评估大气压双阻挡放电（DBD）等离子体处理对鲜切猕猴桃品质保持的影响。每边进行10和20分钟的治疗，并在控制条件下，通过监测相关的视觉质量，质地，叶绿素，类胡萝卜素和多酚的参数，在4天的存储过程中，其后果进行了评估。体外抗氧化活性通过多模式方法进行评价，结合不同的分析方法，用于分析抗氧化剂的抗自由基活性和还原活性。根据所获得的结果，等离子体处理通过改善颜色保持性和减少储存期间的变暗区域形成而对产品的质量保持产生积极影响，与对照相比不引起任何质地变化。等离子体处理引起色素的立即轻微损失，但在储存期间保持得更好。抗氧化剂含量和抗氧化活性在处理样品和对照样品之间没有显着变化。(C)2015爱思唯尔B.V.保留所有权利。
The efficacy of atmospheric plasma treatment on microbial decontamination of different kinds of food products is already known. Recently, new applications of this innovative technology have been proposed, in order to test the improvement of quality maintenance of minimally processed fruit and vegetables. Nevertheless, the knowledge on the modifications of functional and nutritional properties of minimally processed fruit is still scarce.The objective of this study was to evaluate the effect of atmospheric double barrier discharge (DBD) plasma treatment on the quality maintenance of fresh-cut kiwifruit. Treatments of 10 and 20 min per side were performed and their consequences were evaluated during four days of storage in controlled conditions by monitoring parameters related to visual quality, texture, chlorophyll, carotenoids and polyphenols. The in vitro antioxidant activity was evaluated through a multimodal approach, combining different assays for the analysis of antiradical activity and reducing activity of antioxidants. According to the obtained results, plasma treatments positively influenced the quality maintenance of the product, by improving colour retention and reducing the darkened area formation during storage, not inducing any textural change compared with the control. Plasma treatments caused an immediate slight loss of pigments, but a better retention during storage. No significant changes in antioxidants content and antioxidant activity were observed among treated samples and control ones. (C) 2015 Elsevier B.V. All rights reserved.