Why does salt preserve meat?
Show answer & explanation
Answer: Draws water out of microbes
Draws water out of microbes ✓ — Correct! Salt creates osmotic pressure that draws water out of bacterial cells through osmosis, dehydrating and killing them or preventing reproduction. Salt also reduces water activity in meat itself, making it inhospitable for microbes. This is why salt-cured meats (bacon, jerky, ham) last much longer than fresh meat!
Creates protective coating — Wrong. Salt does form a surface layer, but preservation works through osmotic dehydration of bacteria and reducing available water in meat.
Lowers meat temperature — Wrong. Salt doesn't cool meat. Preservation works through osmosis—removing water that bacteria need to survive and reproduce.
More Food & Nutrition questions
- Why can a little chili make food taste better?
- Even many dry Brut Champagnes receive a small sugar-and-wine dosage after sediment removal; why isn't that simply a trick to make them sweet?
- When the neck of a Champagne bottle is frozen and briefly opened during disgorgement, what actually pushes the yeast plug out?
- Before removing sediment from Champagne, why are the bottles slowly turned upside down over weeks?
- Why can Champagne gain bread-or-brioche aromas while resting on the dead yeast left after bottle fermentation?
- Why does pouring Champagne down the side of a tilted glass usually keep more fizz than splashing it straight into the middle?