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A novel technology for high-moisture textured soy protein

 

Although the demand for meat analogues is increasing, aspects of the analogues’ textural characteristics continue to be problematic. To solve these problems, a new technique for applying vacuum packaging and pressurized heat (i.e., vacuum-autoclaving) to low-moisture TSP has been proposed by South Korean Researchers. 

An analysis of the morphological characteristics of the analogues showed that the vacuum-autoclaving treatment affected the packing structure of the materials. The density was increased by about 0.25g/mL by vacuum-autoclaving, and the movement of water was restricted by the formation of a packed structure. The disulfide bonds increased by 3muM/g or more and the beta-sheets and alpha-helixes increased by 7 % or more; this contributed to structural changes due to protein aggregation. The texturization index and hardness tended to decrease by more than 30 %, indicating a decrease in overall structural strength. 

The newly proposed technology has potential for use in the commercialization of meat analogues. The results were published in the Food Chemistry journal.

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