为进一步提高蛋清蛋白(egg white protein,EWP)复合凝胶的打印质量,该文探究了喷嘴直径、填充率和打印速度对打印产品成型性的影响以及内部结构对打印产品质构特性的影响。结果表明,喷嘴直径为1.20 mm时,打印产品的线条流畅、外观精致并且具有更好的稳定性。填充率不低于50%时,打印产品的内部结构具有更好的支撑性。打印速度越快,打印效率越高。根据打印效果和打印效率,打印速度选择35 mm/s。综合表明,当喷嘴直径为1.20 mm、填充率不低于50%以及打印速度为35 mm/s时,EWP复合凝胶能够打印出质量更好、外观更精致的产品。内部结构对打印产品质构特性的结果表明,随着填充率的增加,同一填充线型打印产品的硬度和胶黏性均增加。打印产品的硬度和胶黏性的下降速度随着孔隙率的增加呈现先快后慢的现象。因此,可通过调控打印产品的内部结构来满足对不同质构特性产品的需求。
The purpose of this study was to further enhance the print quality of egg white protein (EWP) composite gel.The effects of nozzle diameters, filling rates, and printing speeds on the formability of the printed products, as well as the effects of internal structure on the textural properties of the printed products, were investigated.The results showed that the printed products had smooth lines, a delicate appearance, and better stability with a nozzle diameter of 1.20 mm.The internal structures of the printed products were better supported when the fill rate was not less than 50%.The faster the print speed, the higher the print efficiency.Based on the printing effect and printing efficiency, a printing speed of 35 mm/s was selected.Comprehensively, it was shown that EWP composite gel can print better quality and a more delicate appearance when the nozzle diameter was 1.20 mm, the fill rate was not less than 50%, and the printing speed was 35 mm/s.The results of internal structures on the textural properties of the printed products showed that the hardness and gumminess properties of the printed products of the same infill line type increased as the fill rate increased.The decrease in hardness and gumminess of the printed products was faster and then slower with the increase in porosity.Therefore, the demand for products with different textural properties can be met by modulating the internal structure of the printed product
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