Effect of moderate electric field voltage on the quality and heat transfer characteristics of potato strips during deep-frying process

Xiaoyu Huang; Yue You; Emad Karrar; Hui Zhang; Qingzhe Jin; Gangcheng Wu; Xingguo Wang

Food Chemistry: X (Mar 2023)

Effect of moderate electric field voltage on the quality and heat transfer characteristics of potato strips during deep-frying process

Xiaoyu Huang,
Yue You,
Emad Karrar,
Hui Zhang,
Qingzhe Jin,
Gangcheng Wu,
Xingguo Wang

Affiliations

Xiaoyu Huang: State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Food, International Joint Research Laboratory for Lipid Nutrition and Safety, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China; International Joint Laboratory on Food Safety, Jiangnan University, China
Yue You: State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Food, International Joint Research Laboratory for Lipid Nutrition and Safety, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China; International Joint Laboratory on Food Safety, Jiangnan University, China
Emad Karrar: State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Food, International Joint Research Laboratory for Lipid Nutrition and Safety, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China; International Joint Laboratory on Food Safety, Jiangnan University, China
Hui Zhang: State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Food, International Joint Research Laboratory for Lipid Nutrition and Safety, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China; International Joint Laboratory on Food Safety, Jiangnan University, China
Qingzhe Jin: State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Food, International Joint Research Laboratory for Lipid Nutrition and Safety, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China; International Joint Laboratory on Food Safety, Jiangnan University, China
Gangcheng Wu: State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Food, International Joint Research Laboratory for Lipid Nutrition and Safety, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China; International Joint Laboratory on Food Safety, Jiangnan University, China; Corresponding author at: State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Food, International Joint Research Laboratory for Lipid Nutrition and Safety, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China.
Xingguo Wang: State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Food, International Joint Research Laboratory for Lipid Nutrition and Safety, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China; International Joint Laboratory on Food Safety, Jiangnan University, China

Journal volume & issue: Vol. 17
p. 100605

Abstract

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The application of moderate electric field (MEF) on frying can influence the quality of fried products; however, the associated mechanism is unknown. This study investigated the effects of MEF voltage on the quality and surface heat transfer of potato strips fried with an MEF. With increasing MEF voltage, the moisture content, hardness, starch gelatinization rate, and shrinkage of the potato strips significantly increased (p < 0.05), while their oil content and brightness decreased (p < 0.05). The decrease in their oil content and brightness indicated improved crust formation, which reduced oil absorption. The potato strips fried under higher voltages exhibited lower oil contents and better microstructure than those fried under lower voltages. A possible mechanism comprised MEF increasing the heat transfer coefficient (h) between oil and potato strips, thereby accelerating crust formation; moreover, h values increased with MEF voltage. The results indicate the potential application of MEF in food frying.

Published in Food Chemistry: X

ISSN: 2590-1575 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Home economics: Nutrition. Foods and food supply; Technology: Chemical technology: Food processing and manufacture
Website: https://www.journals.elsevier.com/food-chemistry-x

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