Micro-organisms in the fridge

  • Thread starter lostminty
  • Start date
  • #1
82
0

Main Question or Discussion Point

Hi,

I'm looking into making a meter that gives an indication of bacterial load present in ones fridge.

Currently I am thinking a device that measures CO2 and alcohol levels once the fridge is in a steady state (ie the door not open for some amount of time).

I have a rough concept that CO2 = aerobic bacteria = non pathgenic food spoiling
and alcohol = anerobic = pathogenic
 

Answers and Replies

  • #2
SteamKing
Staff Emeritus
Science Advisor
Homework Helper
12,798
1,666
Currently I am thinking a device that measures CO2 and alcohol levels once the fridge is in a steady state (ie the door not open for some amount of time).
This is your first obstacle. You might as well spend your time figuring out what happens to the little light in the fridge when the door is closed.
 
  • #3
82
0
It turns off in my fridge. I can tell because it delay turns on when i open the door just a jar.
 
  • #4
SteamKing
Staff Emeritus
Science Advisor
Homework Helper
12,798
1,666
Great. Now figure out how to have a fridge without opening the door.
 
  • #5
82
0
why would I do that?
 
  • #6
SteamKing
Staff Emeritus
Science Advisor
Homework Helper
12,798
1,666
Re-read your OP.
 
  • #7
jim mcnamara
Mentor
3,871
2,254
When you set up an experiment you try to remove aspects of the system you cannot control. A closed cold box would work better to test what you describe.
 
  • Like
Likes 1 person
  • #8
AlephZero
Science Advisor
Homework Helper
6,994
291
I have a rough concept that CO2 = aerobic bacteria = non pathgenic food spoiling
and alcohol = anerobic = pathogenic
If your fridge contains half-empty yoghurt pots and/or wine bottles, that concept may need some more work.
 
  • Like
Likes 1 person
  • #9
82
0
Thanks for helping :)

So I see that a fridge is too dynamic to have measurable value. Perhaps some particular metabolite could be measurable, but then you have issues associated with scope.

Compartmentalised detection could do it, ie built into food containers. But electronics are not suited for such low end goods. Perhaps some type of sticker?

or maybe a cling film that changes colour
 

Related Threads on Micro-organisms in the fridge

Replies
5
Views
1K
Replies
22
Views
98K
Replies
10
Views
2K
Replies
2
Views
506
  • Last Post
Replies
10
Views
7K
Replies
5
Views
2K
  • Last Post
Replies
5
Views
8K
Replies
8
Views
1K
Replies
1
Views
2K
Top