Ultrasonic-assisted green extraction of peach gum polysaccharide for blue-emitting carbon dots synthesis

• DOI: 10.1016/j.scp.2021.100555
• Publication Date: 2021-11-07T10:00:53Z
• Authors: Ruyuan Zhang; Lei Wang; Fatima-ezzahra Et...; Miral Javed; Li Li; Xingyu Lin; Yanqun Xu; Yating Lu; Xingfeng Shao; Zisheng Luo
• Keywords: 02 engineering and technology; 0210 nano-technology

Abstract Raw peach gum is hard crystalline-like solid with very poor solubility, significantly restricting its application in various fields. This study optimized the parameters for ultrasonic-assisted peach gum polysaccharides (UPGP) extraction. The results showed that the maximum extraction rate was up to 80.1% under the optimized conditions of 5 h extraction time, 90 mL/g water to raw peach gum ratio and 532 W ultrasonic intensity at 95 °C. The acquired UPGP mainly consisted of Ara, Gal and Man with a molecular weight of 8.18 × 106 g/mol. Moreover, the UPGP has been used as a green precursor for carbon dots (CDs) preparation through a simple one-step hydrothermal reaction. The synthesized CDs had a mean particle diameter of 7.66 nm and showed excellent fluorescence intensity and stability. Thus, this study improved the utilization of raw peach gum and further broadened the UPGP application.