Related Experiment Video
Updated: Aug 6, 2026
08:46
Determining the Ice-binding Planes of Antifreeze Proteins by Fluorescence-based Ice Plane Affinity
Published on: January 15, 2014
Ice Recrystallization Inhibition under Periodic Temperature Fluctuations by Type I and Type III Antifreeze Proteins
Zhaohui Sun1, Mario Shibata2, Tomoaki Hagiwara2
1Course of Applied Marine Bioscience, Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato, Tokyo, Japan.
Bioscience, Biotechnology, and Biochemistry
|July 23, 2026
Summary
Antifreeze proteins inhibit ice recrystallization in frozen foods, even with temperature fluctuations. Type I antifreeze protein showed stronger inhibition than Type III, suggesting ice-binding strength improves resilience to melt-refreeze cycles.
Area of Science:
- Food Science
- Biochemistry
- Materials Science
Background:
- Ice recrystallization degrades frozen food quality.
- Melt-refreeze cycles exacerbate this deterioration.
- Antifreeze proteins (AFPs) are known to inhibit ice recrystallization.
Purpose of the Study:
- To investigate the efficacy of Type I and Type III antifreeze proteins in inhibiting ice recrystallization.
- To assess AFP performance under fluctuating temperature conditions simulating real-world storage.
- To compare the effectiveness of Type I and Type III AFPs under varying temperature fluctuation amplitudes.
Main Methods:
- Sucrose solutions containing Type I and Type III AFPs were subjected to controlled temperature cycling (-10°C average, ±0.1°C to ±1.0°C fluctuations).
- Ice recrystallization inhibition was quantified under these dynamic conditions.
- Thermal hysteresis values were measured to correlate with ice-binding strength.
Main Results:
- Both Type I and Type III antifreeze proteins demonstrated significant ice recrystallization inhibition.
- Inhibition activity decreased with increasing temperature fluctuation amplitude.
- Type I antifreeze protein consistently showed stronger inhibition than Type III across all tested conditions.
- Higher thermal hysteresis values correlated with greater ice recrystallization inhibition under fluctuating temperatures.
Conclusions:
- Antifreeze proteins offer protection against ice recrystallization even during temperature fluctuations.
- Melt-refreeze cycling partially reduces AFP efficacy.
- Type I antifreeze protein's superior performance suggests that stronger ice-binding affinity enhances tolerance to dynamic temperature changes, crucial for frozen food stability.
Keywords:
antifreeze proteinsice recrystallizationmelt–refreeze recrystallizationperiodic temperature fluctuationsthermal hysteresisMore Related Videos
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