Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6665234 | Journal of Food Engineering | 2015 | 7 Pages |
Abstract
The open-ended coaxial probe technique was used to study the effects of frequency (500-2500 MHz), temperature (20-90 °C), concentrations of myofibrillar protein (0.5, 1.5, and 2.5 mg/mL) and NaCl (0.3, 0.45, and 0.6 M) on the dielectric properties of myofibrillar protein. Models describing the behavior of the dielectric constant (εâ²), loss factor (εâ³) were developed. εⲠdecreased as frequency, temperature, and NaCl concentration increased, whereas εⳠdecreased with increasing frequency but increased with increasing temperature and NaCl concentration. Minor differences in the effects of myofibrillar protein concentrations were observed; the trend of εⲠchanges agreed with viscosity changes, namely the maximum value of εⲠand viscosity were achieved when the myofibrillar protein concentration was 1.5 mg/mL, followed by concentration of 0.5 and 2.5 mg/mL. The penetration depth was estimated under various conditions and decreased with frequency, temperature, and NaCl concentration increasing but increased with myofibrillar protein concentration increasing.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Dandan Feng, Yong Xue, Zhaojie Li, Yuming Wang, Wenge Yang, Changhu Xue,