The present study aimed to evaluate the physicochemical properties of dielectric barrier discharge (DBD) plasma grafted carboxymethyl cellulose (CMC) and soy protein isolate (SPI). Therefore, the mixture of SPI and CMC was treated at 16, 18 and 20 kV for 5, 10 and 15 min with DBD plasma. The results of FTIR, XRD, FESEM and SDS-PAGE confirmed the SPI-CMC conjugate formation after plasma treatment, and a glycation degree of about 21% was obtained after 15 min treatment at 18 kV. Significantly higher levels of emulsifying activity and stability, as well as solubility, were obtained for the conjugates, as compared with the SPI-CMC mixture. Also, the smaller droplet sizes were observed in emulsions obtained from conjugate produced at 18 kV for 5 min, which had the most stability after 14 days of storage at 4°C. Eventually, it was detected that DBD plasma could graft SPI and CMC in a short time.

本研究旨在评估介电阻挡放电 (DBD) 等离子体接枝羧甲基纤维素 (CMC) 和大豆分离蛋白 (SPI) 的理化性质。因此，SPI 和 CMC 的混合物在 16、18 和 20 kV 下用 DBD 等离子体处理 5、10 和 15 分钟。FTIR、XRD、FESEM和SDS-PAGE的结果证实了等离子体处理后SPI-CMC缀合物的形成，并且在18kV处理15分钟后 获得约21%的糖化度。 与 SPI-CMC 混合物相比，缀合物获得了显着更高水平的乳化活性和稳定性以及溶解度。此外，在 18 kV 下 5 分钟产生的结合物获得的乳液中观察到较小的液滴尺寸，其在 14 天后最稳定 在 4°C 下储存。最终检测到DBD等离子体可以在 短时间内接枝SPI和CMC。