High-voltage dielectric barrier discharge (DBD) pretreatments of watermelon rinds were conducted at 12, 16, and 20 kV cm-1 to extract pectin. The DBD pretreatment at 20 kV cm⁻¹ had significantly impacted pectin extraction, increasing yield from 17.4% to 18.5%. A kinetic study had shown that pectin extraction can be properly modeled using a pseudo-first-order kinetic model. The pectins obtained from conventional extraction and DBD pretreatment had galacturonic acid contents ranging from 79.02% to 80.25% and average molecular weights between 222 and 402 kDa. The exposure to the DBD pretreatment had increased total monosaccharides, branching index, and the rhamnogalacturonan domain of pectin. Fourier transform infrared spectroscopy analysis had not indicated a formation of new functional groups or significant structural changes but had increased functional group intensity. X-ray diffraction showed no significant changes in pectin's crystalline structure due to DBD pretreatment.

在 12、16 和 20 kV cm-1 下对西瓜皮进行高压介质阻挡放电 (DBD) 预处理以提取果胶。^{20 kV cm -1}下的 DBD 预处理显着影响了果胶提取，将产率从 17.4% 提高到 18.5%。动力学研究表明，可以使用伪一级动力学模型对果胶提取进行正确建模。常规提取和DBD预处理所得果胶的半乳糖醛酸含量为79.02%~80.25%，平均分子量为222~402 kDa。暴露于 DBD 预处理增加了总单糖、支化指数和果胶的鼠李糖半乳糖醛酸结构域。傅里叶变换红外光谱分析没有表明新官能团的形成或显着的结构变化，但官能团强度增加。X 射线衍射显示，DBD 预处理后果胶的晶体结构没有发生显着变化。