The aim of the study was to investigate the impact of combined application of pulsed electric fields (PEF) and ultrasound (US) pre-treatment on drying kinetics, mass transfer and convective water diffusion coefficient on plum fruit. The treatment was performed by using plum fruit in water for uniform distribution of electric conductivity and PEF treatment was applied at 1, 2 and 3 kV/cm, 50 pulses followed by US, 40 kHz with 99% frequency for 30 min and 27 ± 2 °C. Cell disintegration, drying kinetics, mass transfer and diffusion coefficient were calculated, and results showed that plums treated at 3 kV/cm intensity exhibited higher cell disintegration followed by 2 and 1 kV/cm. Furthermore, the investigation of PEF and US pre-treatment for drying kinetics and convective diffusion coefficient revealed that plums treated at 3 kV/cm contributed higher drying rate and convective water diffusion coefficient at uniform, pulse number, temperature and sonication time followed by 2 and 1 kV/cm. This study stated that combined treatment of PEF and US increased the cell disintegration, drying rate and also facilitate convective water diffusion as compared to untreated intact tissues.

该研究的目的是研究脉冲电场（PEF）和超声（US）预处理的联合应用对李子果实干燥动力学，传质和对流水扩散系数的影响。通过在水中使用李子果实进行处理，以实现电导率的均匀分布，并以1、2和3 kV / cm进行PEF处理，依次使用50个脉冲，US，40 kHz，频率为99％的30分钟和27±2 ℃。计算了细胞的崩解，干燥动力学，传质和扩散系数，结果表明，以3 kV / cm的强度处理的李子具有更高的细胞崩解性，随后分别为2和1 kV / cm。此外，对PEF和US预处理的干燥动力学和对流扩散系数的研究表明，以3 kV / cm处理的李子在均匀，脉冲数，温度和超声处理时间分别为2和1 kV时，有助于提高干燥速率和对流水扩散系数/厘米。这项研究表明，与未处理的完整组织相比，PEF和US的联合治疗可增加细胞的崩解，干燥速率并促进对流水扩散。