The inactivation kinetics of polyphenol oxidase in mushroom (Agaricus bisporus) during thermal and thermosonic treatments.
Ultrason Sonochem
; 20(2): 674-9, 2013 Mar.
Article
em En
| MEDLINE
| ID: mdl-23102768
ABSTRACT
The effect of thermal and thermosonic treatments on the inactivation kinetics of polyphenol oxidase (PPO) in mushroom (Agaricus bisporus) was studied in 55-75°C temperature range. In both the processes, the inactivation kinetics of PPO followed a first-order kinetics (R(2)=0.941-0.989). The D values during thermal inactivation varied from 112±8.4min to 1.2±0.07min while they varied from 57.8±6.1min to 0.88±0.05min during thermosonic inactivation at the same temperature range. The activation energy during thermal inactivation was found to be 214±17kJ/mol, while it was 183±32kJ/mol during thermosonic inactivation. The inactivating effect of combined ultrasound and heat was found to synergistically enhance the inactivation kinetics of PPO. The D values of PPO decreased by 1.3-3 times during thermosonic inactivation compared to the D values of PPO during thermal inactivation at the temperature range. Therefore, thermosonication can be further developed as an alternative to "hot break" process of mushroom.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ultrassom
/
Catecol Oxidase
/
Agaricales
/
Temperatura Alta
Idioma:
En
Revista:
Ultrason Sonochem
Assunto da revista:
DIAGNOSTICO POR IMAGEM
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
China