Скачать или смотреть 'Cooking eggs' with liquid nitrogen

The scientists have been to Brighton to demonstrate how you to 'cook an egg' using liquid nitrogen in a process called denaturation, see below for more: Denaturation can be caused by mild heating, mechanical stress or chemicals (e.g. alcohol, salt, acetone) This is when the protein structure is disrupted (reversibly) but the primary chemical bonds are not broken i.e. the chain of amino-acids is not affected but the folding of the protein is. An example of irreversible denaturation is when an egg is fried, since no matter how long you leave a fried egg, the white will never regain its original clear liquid state. However, when an egg is frozen in liquid Nitrogen, this is an example of reversible denaturation since, as the egg warms up again, it regains its original form.

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