Effect of alternating magnetic field on ice crystal nucleation and its application for near-freezing temperature storage of grapes

Hong Jiang; Songsong Zhao; Shuangqing Li; Hongyu Wang; Xinyi Han; Wenqiang Guan

Journal of Future Foods (Jun 2025)

Effect of alternating magnetic field on ice crystal nucleation and its application for near-freezing temperature storage of grapes

Hong Jiang,
Songsong Zhao,
Shuangqing Li,
Hongyu Wang,
Xinyi Han,
Wenqiang Guan

Affiliations

Hong Jiang: Key Lab of Agricultural Products Low Carbon Cold Chain of Ministry of Agriculture and Rural Affairs, Tianjin Key Laboratory of Refrigeration Technology, College of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China
Songsong Zhao: Key Lab of Agricultural Products Low Carbon Cold Chain of Ministry of Agriculture and Rural Affairs, Tianjin Key Laboratory of Refrigeration Technology, College of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China; Corresponding author at: College of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China.
Shuangqing Li: Key Lab of Agricultural Products Low Carbon Cold Chain of Ministry of Agriculture and Rural Affairs, Tianjin Key Laboratory of Refrigeration Technology, College of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China
Hongyu Wang: Key Lab of Agricultural Products Low Carbon Cold Chain of Ministry of Agriculture and Rural Affairs, Tianjin Key Laboratory of Refrigeration Technology, College of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China
Xinyi Han: Key Lab of Agricultural Products Low Carbon Cold Chain of Ministry of Agriculture and Rural Affairs, Tianjin Key Laboratory of Refrigeration Technology, College of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China; Arts et Metiers Institute of Technology, Arts et Métiers ParisTech, Paris 75013, France
Wenqiang Guan: Tianjin Key Laboratory of Food Biotechnology, College of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China

Journal volume & issue: Vol. 5, no. 2
pp. 193 – 199

Abstract

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The low temperature is an effective method for postharvest fruits preservation. However, the ice crystal nucleation caused by low temperature significantly decreases the quality of fruits. In this paper, the effects of alternating magnetic field (AMF) on the ice nucleation temperature of grape were investigated, and the AMF continued treatment and AMF intermittent treatment (20 Gs, 60 Hz) assisted near-freezing temperature (AMCT/AMIT-NFT) were used to store grapes at (−2.5 ± 0.2)°C. Compared with the untreated group, AMF decreased the ice nucleation temperature of grape by 1°C. Meanwhile, Results demonstrated that AMCT/AMIT-NFT storage improved sensory properties and antioxidant capacity of grapes, with the overall effect of AMIT treatment being the most favorable. After 9 days of storage, the color difference and polyphenol oxidase (PPO) activity of AMIT treatment were reduced by 17% and 12%, respectively, compared with the untreated group, and it effectively slowed down malonaldehyde (MDA) accumulation. These conclusions show that AMCT/AMIT-NFT storage is an effective tool for prolonging the shelf life of grapes.

Published in Journal of Future Foods

ISSN: 2772-5669 (Online)
Publisher: KeAi Communications Co. Ltd.
Country of publisher: China
LCC subjects: Technology: Chemical technology: Food processing and manufacture
Website: https://www.keaipublishing.com/en/journals/journal-of-future-foods/

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