Week 7 Decomposition Flashcards
separation of compounds into simpler substances by the action of microbial and/or autolytic enzymes
decomposition
decomposition of proteins
proteolysis
self-digestion or self-destruction of the body by enzymes (generally related to protein decomposition)
autolysis
a chemical reaction in which a substance is broken down or dissociated by water
hydrolysis
protein breakdown may be attributed to ____ processes
hydrolytic
the gradual decomposition of dead organic matter by the enzymes of aerobic bacteria
decay
the decomposition of proteins by the enzymatic activity of anaerobic bacteria
putrefaction
____ creates thiols, phenolic products, ammonia, and other products
putrefaction
the microbial decomposition of carbohydrates under anaerobic conditions
fermentation
carbohydrates will decompose into ____
simple sugars
carbs stored in muscles and the liver are broken down into ____ and ____
pyruvic acid & lactic acid
decomposition of sugars
saccharolysis
simple sugars from carb breakdown are further decomposed into ____ and ____
carbon dioxide & water
decomposition of fats
lipolysis
____ eventually break down into carbon dioxide and water and/or adipocere
lipids
conversion of fatty tissues of the body into a soapy waxy substance called adipocere or grave wax
saponification
sequence of decomposition
1) tissues high in enzymes
2) carbs
3) soft proteins
4) fats
5) harder proteins
6) keratin proteins
7) bones
signs of decomposition (5)
color change
odor
purge
desquamation
accumulation of gas
building blocks of proteins
amino acids
product of decomposition of fats
fatty acids
any one of a group of nitrogenous organic compounds formed by the action of putrefactive bacteria on proteins (putrescine, cadaverine)
ptomaines
intrinsic factors affecting decomposition (7)
age
sex
weight
cause of death
manner of death
bacterial and parasitic activity
pharmaceutical agents
extrinsic factors affecting decomposition (5)
air
moisture
temperature
bacterial and parasitic activity
vermin / insects
minimum, optimum, and maximum temperatures for decomposition
minimum 32°F
optimum 98°F
maximum 120°F