Application of Supercooling for the Enhanced Shelf Life of Asparagus (Asparagus officinalis L.)

Youngsang You, Muci Li, Taiyoung Kang, Youngbok Ko, Sangoh Kim, Seung Hyun Lee, Soojin Jun
2021 Foods  
Freezing extends the shelf-life of food by slowing down the physical and biochemical reactions; however, ice crystal formation can result in irreversible damage to the cell's structure and texture. Supercooling technology has the potential to preserve the original freshness of food without freezing damage. In this study, fresh asparagus was preserved in a supercooled state and its quality changes such as color, weight loss, texture, chlorophyll and anthocyanin content, and enzymatic activities
more » ... superoxide dismutase and catalase) were evaluated. The asparagus samples were successfully supercooled at −3 °C with the combination treatment of pulsed electric field (PEF) and oscillating magnetic field (OMF), and the supercooled state was maintained for up to 14 days. Asparagus spears preserved in the supercooled state exhibited lower weight loss and higher levels of quality factors in comparison to the frozen and refrigerated control samples.
doi:10.3390/foods10102361 pmid:34681410 fatcat:hz4ukp7m4rbqlhkbhpnhv5hcvy