Chao-Kai Chang, Kuan-Chen Cheng, Sheng-Hung Lin, Wei-Lun Zhu, Sheng-Yen Tsai, Prakoso Adi, Shella Permatasari Santoso, Chang-Wei Hsieh
This study investigated the efficacy of pulsed electric field (PEF) treatment in mitigating quality deterioration in sweet persimmons (Diospyros kaki 'Fuyu') induced by modified atmosphere packaging (MAP). The findings demonstrate that treating persimmons with a 50 kV m−1 PEF for 30 min significantly counters the softening and browning effects of 10% CO2 exposure. PEF pretreatment was observed to enhance the enzymatic activities of succinate dehydrogenase by 31.5% and cytochrome C oxidase by 36.8%, thereby boosting energy metabolism and curbing the glycolytic activities of hexokinase and phosphofructokinase by 47.9% and 18.3%, respectively. This inhibition extends to the activity of pyruvate decarboxylase and alcohol dehydrogenase, which were reduced by 27.8% and 23.1%, respectively, leading to decreased production of ethanol (50.7%) and acetaldehyde (28.57%)—compounds typically formed through oxygen metabolism. Furthermore, PEF pretreatment not only preserves the storage quality of persimmons but also activates the fruit's intrinsic repair mechanisms via pressure stimulation. This mechanism enhances the fruit's resistance to quality degradation caused by environmental CO2 accumulation during storage. The findings suggest that PEF is a practical, residue-free, and additive-free pretreatment technology for fruit, aligning well with sustainable development objectives and offering a robust method to protect fruits against MAP-induced deterioration. © 2024
Department of Food Science and Biotechnology, National Chung Hsing University, South Dist., Taichung City, 40227, Taiwan; Graduate Institute of Food Science and Technology, National Taiwan University, Daan District., Taipei City, 10617, Taiwan; Institute of Biotechnology, National Taiwan University, Daan District., Taipei City, 10617, Taiwan; Department of Medical Research, China Medical University Hospital, North District., Taichung City, 40400, Taiwan; Department of Optometry, Asia University, Wufeng Dist., Taichung City, 413305, Taiwan; International Doctoral Program in Agriculture, National Chung Hsing University, South Dist., Taichung City, 40227, Taiwan; Department of Agricultural Product Technology, Sebelas Maret University, Surakarta City, 57126, Indonesia; Department of Chemical Engineering, Widya Mandala Surabaya Catholic University, Surabaya, 60114, Indonesia; Department of Chemical Engineering, National Taiwan University of Science and Technology, Daan Dist, Taipei, 10607, Taiwan; Department of Food Science, National Ilan University, Shennong Road, Yilan City, 26047, Taiwan; Advanced Plant and Food Crop Biotechnology Center, National Chung Hsing University. South Dist., Taichung City, 40227, Taiwan