Oxidative Responses of ‘Jinshu 7’ Potato Tuber to Pulse Electric Field Treatment

IF 1.8 4区农林科学 Q3 AGRONOMY

American Journal of Potato Research Pub Date : 2025-04-22 DOI:10.1007/s12230-025-09993-7

Erihemu, Chuchu Zhang, Hongze Lv, Ke Shi, Bidan Shi, Jing Wang, Meng Zhao, Pengfei Zhang, Yi Wu, Hongmei Zhu

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Abstract

An orthogonal experiment was used to optimize the pulsed electric field (PEF) conditions for inhibiting the browning of whole potatoes. The effects of PEF treatment on microstructure, overall appearance, physicochemical properties, and enzyme activity related to enzymatic browning for whole potato tubers (Jinshu 7) during storage were evaluated. Results showed that the following conditions were optimal: pulse voltage of 400 V, pulse time of 60 s, and pulse number of 4 pieces. Under optimal conditions, the PEF-treated whole potatoes were observed to be significantly lower at 27.6% of browning index (ΔL value) and 28.09% of polyphenol oxidase (PPO) activity, respectively, compared with the control group. Compared with the control, PEF-treated whole potatoes had lower activity of PPO during 60 days of storage and higher level of total phenols during 15–45 days of storage. Results indicated that PEF treatment could control the browning of whole potatoes by inhibiting PPO activity to reduce enzymatic browning.

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脉冲电场处理对‘金蜀7号’马铃薯块茎氧化反应的影响

采用正交试验优化脉冲电场（PEF）抑制马铃薯褐变的条件。研究了PEF处理对金薯7号马铃薯块茎贮藏过程中微观结构、外观、理化性质和酶活性的影响。结果表明：脉冲电压为400 V，脉冲时间为60 s，脉冲数为4段为最佳条件。在最佳处理条件下，pef处理的马铃薯褐变指数（ΔL值）和多酚氧化酶（PPO）活性分别显著低于对照组27.6%和28.09%。与对照相比，经pef处理的全薯在贮藏60 d期间PPO活性降低，而在贮藏15 ~ 45 d期间总酚含量升高。结果表明，PEF处理可通过抑制PPO活性降低酶促褐变来控制整个马铃薯的褐变。

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来源期刊

American Journal of Potato Research 农林科学-农艺学

CiteScore

3.40

自引率

6.70%

发文量

审稿时长

18-36 weeks

期刊介绍： The American Journal of Potato Research (AJPR), the journal of the Potato Association of America (PAA), publishes reports of basic and applied research on the potato, Solanum spp. It presents authoritative coverage of new scientific developments in potato science, including biotechnology, breeding and genetics, crop management, disease and pest research, economics and marketing, nutrition, physiology, and post-harvest handling and quality. Recognized internationally by contributors and readership, it promotes the exchange of information on all aspects of this fast-evolving global industry.