Formaldehyde did not prevent the growth of microorganisms in the brains of a human anatomy laboratory

Abstract

The conservation of cadaverous parts of human beings in formaldehyde is classically used through an aqueous solution of formaldehyde, reported in the literature as having the best action against microorganisms. However, studies have shown that some microorganisms have potential for resistance to formaldehyde, such as some fungi and bacteria, which are able to colonize man and animals, causing various infectious conditions and pathologies. In order to verify the possible growth of these microorganisms in human anatomy pieces preserved in formaldehyde, from the anatomy laboratory of a private Faculty in Bauru (São Paulo, Brazil), samples were collected through superficial scraping in the parts of the central nervous system (brain). After collection, an analysis of the growth of fungi and bacteria was carried out. It was found in the brain samples studied that 10% formaldehyde was not able to totally prevent the growth of microorganisms, fungi and bacteria, but it guarantees the non-growth of microorganisms in large quantities.