Effect of cold plasma on polyphenol oxidase inactivation in cloudy apple juice and on the quality parameters of the juice during storage

Title: Effect of cold plasma on polyphenol oxidase inactivation in cloudy apple juice and on the quality parameters of the juice during storage
Authors: Illera, A. E.Chaple, SonalSanz, M. T.Bourke, Paulaet al.
Permanent link: http://hdl.handle.net/10197/12627
Date: 30-Sep-2019
Online since: 2021-11-10T17:16:24Z
Abstract: Direct cold plasma treatment has been investigated as an alternative non-thermal technology as a means of maintaining and improving quality of fresh cloudy apple juice. Process variables studied included type of plasma discharge, input voltage and treatment time on polyphenol oxidase (PPO) inactivation. Spark discharge plasma at 10.5 kV for 5 min was the best treatment, with near total inactivation of PPO achieved, although good PPO inactivation was also recorded using shorter treatment times. Residual activity (RA) of PPO was 16 and 27.6% after 5 and 4 min of treatment respectively. This PPO inactivation was maintained throughout the storage trials, but decreased with samples treated for a shorter time. Plasma treatment improved key quality parameters of Golden delicious cloudy apple juice, with retention of critical quality parameters during extended storage trials. Color was the most noticeable change, which was enhanced with retention of a greener color. An increase of 69 and 64% was obtained in the total phenolic content after 4 and 5 min of treatment, respectively. Therefore, cold plasma was demonstrated to be a good alternative to traditional heat treatments for enhanced quality retention of fresh cloudy apple juice and over its storage.
Funding Details: European Commission - European Regional Development Fund
Science Foundation Ireland
Funding Details: Spanish Government
Type of material: Journal Article
Publisher: Elsevier
Journal: Food Chemistry: X
Volume: 3
Keywords: Cloudy apple juiceCold plasmaSpark dischargePPO inactivationQuality parametersShelf life studyAtmospheric pressure plasmaNonthermal plasmaAnacardium occidentale
DOI: 10.1016/j.fochx.2019.100049
Language: en
Status of Item: Peer reviewed
ISSN: 2590-1575
This item is made available under a Creative Commons License: https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
Appears in Collections:Biosystems and Food Engineering Research Collection

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