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Effect of immersion freezing on water migration in Huangguan pears.

Author(s) : CAO X., ZHANG X., WANG Y., NIAN R., YOU K., ZHU D.

Type of article: IJR article

Summary

The effect of immersion freezing on water distribution and calcium ion migration in pears was studied. The samples were frozen at -20 °C and -40 °C. Results showed that the -40 °C combined immersion freezing (-40IF-T) was better in inhibiting sample browning and sensory quality, compared with other groups. Water activity and freezable water content were closer to that of the unfrozen sample. Compared with -20IF, the freezing time of -40IF-T was reduced by 74.90 %. Both the drip loss and calcium ion content showed that -40IF-T was better than other groups. Low-field nuclear magnetic resonance results showed that -40IF-T reduced water migration during freezing, indicating a more uniform distribution of water in -40IF-T tissues. The results of relative conductivity showed that -40IF-T could effectively reduce the damage of cell membrane caused by freezing. In conclusion, low temperature and cryoprotective fluid can be used as effective methods to maintain sample quality.

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Pages: 156-163

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Details

  • Original title: Effect of immersion freezing on water migration in Huangguan pears.
  • Record ID : 30032465
  • Languages: English
  • Subject: Technology
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 165
  • Publication date: 2024/09
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2024.05.023

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