ABSTRACT
A puffed food using salted duck egg white and starch as ingredients was produced by using a
novel pulsed-spouted microwave vacuum drying (PSMVD) technique. In this study, three types of
samples (ratios of salted duck egg white to starch 1:10, 3:10, and 5:10) were prepared and the
moisture content of these samples was dehydrated to about 12% in a PSMVD dryer, then the
samples were under different microwave powers (1.34 kW, 2.01 kW, and 2.68 kW) for puffing. The
product volume expansion ratio, textural crispness (breaking forces), color parameters (L*, a* and
b*), and sensory scores were determined. It was observed that microwave power and different
ratios of salted duck egg white to starch had a significant effect on the expansion effect of the
samples. The results indicated that the best product quality was obtained under the ratio of salted
duck egg white to starch at 3:10 and microwave power at 2.01 kW.