RT info:eu-repo/semantics/article
T1 Effect of thermosonication batch treatment on enzyme inactivation kinetics and other quality parameters of cloudy apple juice
A1 Illera Gigante, Alba Ester
A1 Sanz Díez, Mª Teresa
A1 Benito Román, Oscar
A1 Varona Fernández, Sandra
A1 Beltrán Calvo, Sagrario
A1 Melgosa Gómez, Rodrigo
A1 García Solaesa, Ángela
K1 Cloudy apple juice
K1 Thermosonication
K1 Enzyme inactivation
K1 Dissolved gases
K1 Chemical engineering
K1 Ingeniería química
AB Cloudy apple juice has been treated by thermosonication in batch mode as an alternative processing to thermal treatment. Thermosonication was found to be effective to inactivate polyphenol oxidase; however, pectinmethylesterase was found to be more resistant. An increase of the working ultrasound amplitude and the amount of energy supplied to the juice led to lower enzyme residual activities.Enzyme inactivation kinetics were determined at different temperatures (from 44 to 67 °C). Inactivation data were described by the first order kinetic model and the Weibull model, both models yielding good fitting. Thermosonication treatment caused a homogenization effect reflected in the shifting of the particle size distribution towards smaller diameters. The effect of the nature of dissolved gases in the juice on enzyme inactivation was studied by displacing the air dissolved in the juice by bubbling nitrogen or carbon dioxide, previous to the thermosonication experiments. Higher inactivation rates were obtained by displacing the air with nitrogen.Industrial relevanceConsumers demand of natural and fresh-like products has driven the food industry to investigate alternative technologies to replace conventional food heat treatments that may affect food quality. Among these technologies, thermosonication treatment is an attractive technology that can inactivate microorganisms and enzymes. This work shows that some enzymes that cause deleterious effect on cloudy apple juice can be more effectively inactivated by thermosonication than by thermal treatment, in the same temperature range, reducing the damages caused by heating.
PB Elsevier
SN 1466-8564
YR 2018
FD 2018-06
LK http://hdl.handle.net/10259/4744
UL http://hdl.handle.net/10259/4744
LA eng
NO Spanish Government (MINECO) and the European RegionalDevelopment Fund (ERDF) for financial support of project CTQ2015-64396-R and AEI's contract. To MINECO for RM's pre-doctoral contract(BES-2013-063937). To University of Burgos for AGS's pre-doctoralcontract. To Consejería de Educación, Junta de Castilla y León andERDF for financial support of project BU055U16 and O. Benito Román´sPost-doctoral contract.
DS Repositorio Institucional de la Universidad de Burgos
RD 23-nov-2024