RT info:eu-repo/semantics/article
T1 Effect of cold plasma on polyphenol oxidase inactivation in cloudy apple juice and on the quality parameters of the juice during storage
A1 Illera Gigante, Alba Ester
A1 Chaple, S.
A1 Sanz Díez, Mª Teresa
A1 Ng, S.
A1 Lu, P.
A1 Jones, J.
A1 Carey, E.
A1 Bourke, P.
K1 Cloudy apple juice
K1 Spark discharge
K1 PPO inactivation
K1 Quality parameters
K1 Shelf life study
K1 Ingeniería química
K1 Chemical engineering
K1 Alimentos
K1 Food
AB 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.
PB Elsevier
SN 2590-1575
YR 2019
FD 2019-09
LK http://hdl.handle.net/10259/5328
UL http://hdl.handle.net/10259/5328
LA eng
NO Spanish Government (MINECO) and the European Regional Development Fund (ERDF) [Project CTQ2015-64396-R] and in part by a research grant from Science Foundation Ireland (SFI) under the Grant Number SFI/16/BBSRC/3391 and the BBSRC under the Grant Reference BB/P008496/1
DS Repositorio Institucional de la Universidad de Burgos
RD 23-nov-2024