It is a technique used by a good number of scientists, and a wide range of industries in the food area, in order to preserve biological and food material respectively. The technique consists of lowering the temperature in an accelerated way to a given object, the temperatures vary according to what you want to do with the object and these can be graduated.
The deep - freezing may be carried out in different ways, depending on the purpose to have the object to be subjected to the procedure used, these forms would be; placing the object in contact with non-toxic cryogenic fluids such as liquid nitrogen or carbon dioxide; and by means of devices called ultra-freezers, which are specially designed to carry out the procedure.
In the area of scientific study, the procedure is applied to the sample that is to be preserved, causing its temperature to drop sharply, from forty degrees Celsius (40 c) to eighty or eighty-five degrees Celsius (80 c / 85 c); This drop in temperature occurs in a fairly short period of time, from its initial temperature to its final temperature in no more than four hours. The main objectivesThis technique ranges from completely limiting the proliferation of decomposing organisms, to maintaining cellular qualities, this is possible thanks to the speed with which the samples can be frozen, since the water contained in them loses temperature in a certain way. so quickly it forms a greater number of crystals. In the process, all biochemical activity is paused, stopping it completely. The samples that support this technique and the temperatures drop to extreme levels are; blood, some bacterial strains, some organs such as skin and muscles, great variety of foods (since it depends on their structure and characteristics), and it is even possible that certain complete invertebrates, as long as they are smaller than fifteen millimeters (15 mm).
The huge food industry has taken advantage of this technique as it allows it to maintain the safety of a product for much longer, without damaging its original properties.
