Fresh Putrefaction Black Putrefaction Butyric Fermentation Dry Decay.
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Transcript of Fresh Putrefaction Black Putrefaction Butyric Fermentation Dry Decay.
Stage 1 - Fresh
Begins right after death Body begins to cool down (Algor
Mortis) Autolysis
› Release of enzymes within cells resulting in cellular break down
Stage 1 - Fresh
Breakdown of tissue results in attraction of insects
Typically occurs 0-3 days after death› Under normal conditions, when body is exposed to air
Stage 2 - Putrefaction
Body begins to bloat› Bacteria begins to break down the body
› Gases produced by bacteria resulting in a bloating body
› Bacteria are from the colon (large intestine)
Stage 2 - Putrefaction
Abdomen and face bloats the most
Due to bloating, skin becomes thin and delicate› Skin begins to break down and slough away (skin slippage)
Stage 2 - Putrefaction
Skin goes through series of color changes› From green to brown
Rise of insect activity during this stage
Putrefaction occurs between 4-10 days after death
Stage 3 – Black Putrefaction
Also known as “active decay” The body bloats enough to burst
› Gases inside the body are released
Internal organs are attacked by insects
Stage 3 – Black Putrefaction
Most of body mass lost mainly due to the activity of the maggots and other insects
Body’s organs will degenerate into soupy mess
Black Putrefaction occurs 10-20 days after death
Stage 4 – Butyric Fermentation
Also known as “advance decay” Wet stages of decomposition
ends› Corpse begins to dry out
The odor associated with bacterial activity begins to dissipate
Stage 4 – Butyric Fermentation
Body becomes dry, mummified husk
Insects begin to clear out – reduced number
Body forms wax layer known as adipocere
Occurs 20-50 days after death
Stage 5 – Dry Decay
“Skeletonization” Internal organs largely
disappeared All moisture gone Connective tissue rots away Bones fall into pile – scavengers
scatter bones
Stage 5 – Dry Decay
Occurs between 50 days and 1 year after death› Depends on climate
Cold conditions – can take up to 2 years
Dry and hot conditions – can take as little as 2 weeks