Crystal control in ice cream - Freezing point depression

4 important questions on Crystal control in ice cream - Freezing point depression

What is the colligative effect?

The presence of solutes and the correlated freezing point depression.

What are non-colligative effects?

The effects mediated by AFPs.

What is the thermal hysteresis effect?

The freezing point of the water is decreased, without hampering its melting point. AFPs induce this effect.
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What happens to the thermal hysteresis in presence of AFPs?

It increases (the difference between freezing and melting point), and within the thermal hysteresis gap, ice crystals will neither grow nor melt.

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