Improvement of quality and flavor of salted egg yolks by ultrasonic assisted cooking.

Xuyue Wang, Yu Huang, Bin Zhou, Weijian Xu, Xiaole Xiang, Qun Huang, Shugang Li

Ultrasonics sonochemistry 2021 Jul

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Physicochemical, texture indexes, microstructure and volatiles were used to characterize the changes in quality, structure and flavor of cooked salted egg yolks (SEYs) with or without ultrasonic treatment. Experimental results indicated that ultrasonic significantly increased cooking (water) loss, oil exudation, lipids oxidation (TBARS), accelerated the doneness of cooked SEYs and then promoted the generation of volatiles. These results were further confirmed by the improvement of thermal stability, the changes in color, secondary structure of proteins, water distribution and mobility. Meanwhile, more "fragments" and "cracks" were observed in scanning electron microscope (SEM) and the decrease in gumminess and chewiness were detected using texture profile analysis (TPA), inducing that the migration of lipids and collapse of gel network were intensified. Moreover, ultrasonic treatment decreased the content of sodium chloride in SEYs. Therefore, it was concluded that the doneness, quality and flavor of cooked SEYs were improved by ultrasonic treatment, which could be used as an effective and alternative method for the production of SEYs with good flavor, sandy and oily texture. Copyright © 2021 The Author(s). Published by Elsevier B.V. All rights reserved.

Citation

Xuyue Wang, Yu Huang, Bin Zhou, Weijian Xu, Xiaole Xiang, Qun Huang, Shugang Li. Improvement of quality and flavor of salted egg yolks by ultrasonic assisted cooking. Ultrasonics sonochemistry. 2021 Jul;75:105579