conservation
protection
maintenance
care
safeguarding
keeping
continuation
upholding
sustaining
prolongation
perpetuation
conserving
bottling
tinning
canning
potting
chilling
freezing
freeze-drying
quick-freezing
drying
desiccation
dehydration
curing
smoking
kippering
salting
pickling
marinating
sousing
jellying
candying
embalming
mummification