All nobles (Pharaohs and families, priests) after death had their bodies prepared to achieve centuries of conservation. Of course, the techniques used at this time were quite different from today's. Studies reveal that the embalming was done from Natrão (saline mixture found on the banks of the Nile River). The alkalinity present counteracted the proliferation of bacteria and the dry climate of North Africa had its contributions, since humidity accelerates decomposition. Thus, Egypt became the Land of Mummies.
Over the years and the advancement of Science, modern conservation techniques emerged, the so-called thanatopraxy allows a deceased to remain in good condition during the wake through disinfection and conservation.
The technique consists of injecting a mixture of formaldehyde and phenol into the cadaver, forcing the blood to leave the circulatory system. Phenol has the property of killing all microorganisms present while formaldehyde, in turn, is a cell fixative that prevents decomposition. This chemical process establishes an ascetic environment capable of resisting microbial invasion.
Thus, a temporary conservation of the corpse is possible, maintaining the appearance of the person in life and a better farewell for family members. Among the advantages of this method are:
- Restore the corpse's natural color and appearance;
- Control of odors;
- Lengthen the wake period.
Among the disadvantages is the high cost of the process, as occurred in ancient Egypt, only the noblest families use this method to look after loved ones.
By Líria Alves
Graduated in Chemistry
Source: Brazil School - https://brasilescola.uol.com.br/quimica/processo-quimico-para-conservacao-cadaveres.htm
