The aim of this research was to investigate whether PEF could inactivate
enzymes (AAO and POD)whilst softening the carrot pieces. Initial
investigationwas conducted to compare the degree of enzyme inactivation
between semi-solid (carrot mash) and solid (carrot pieces) food
matrix. Subsequently, the effect of temperature pre-conditioning (10,
20, 30 and 40 °C) prior to PEF processing, carrot fibre direction toward
PEF electrodes, electric field strength, specific energy input and pulse
frequency on enzyme inactivation and texture was studied. The cutting
force required to penetrate cross-section regions of carrot cortex,
epidermis and xylem was used as a parameter to evaluate the carrot
texture. Based on this study, the implementation of PEF treatment in
the processing line of frozen and canned carrots was also discussed.
The aim of this research was to investigate whether PEF could inactivateenzymes (AAO and POD)whilst softening the carrot pieces. Initialinvestigationwas conducted to compare the degree of enzyme inactivationbetween semi-solid (carrot mash) and solid (carrot pieces) foodmatrix. Subsequently, the effect of temperature pre-conditioning (10,20, 30 and 40 °C) prior to PEF processing, carrot fibre direction towardPEF electrodes, electric field strength, specific energy input and pulsefrequency on enzyme inactivation and texture was studied. The cuttingforce required to penetrate cross-section regions of carrot cortex,epidermis and xylem was used as a parameter to evaluate the carrottexture. Based on this study, the implementation of PEF treatment inthe processing line of frozen and canned carrots was also discussed.
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