Freeper Help Requested - Pasteurization Units, Calculating

Moi | Jhoffa_X

[Jhoffa_]

This may be the formula.

(It was found painted in blood on a cave wall in Tibet.)

Can anyone decipher this thing?

[AngrySpud]

E=MC2 (sorry, I couldn't resist)

[Jhoffa_]

Ahhh!

A pox on thee spudman!

[curmudgeonII]

A little background:

Pasteurization was never designed to kill all microbes; the intent was to kill certain comparatively heat-sensitive microbes. Pasteur originally designed pasteurization to give the French beer industry a boost; French beer apparently turned rancid to some degree a century and a quarter ago. [Just think of it ----- French beer.] Later it was adapted, in France, to lessen the likelihood of wine turning sour.

It wasn't until the concept reached this country that it was applied to milk. In milk the purpose was to kill the tubercle bacillus. Sometime later a slightly more heat resistant organism became the criterion, the organism that causes Q fever. [Q = British for querry, i.e. question.]

[Jhoffa_]

Pasteurization was never designed to kill all microbes; the intent was to kill certain comparatively heat-sensitive microbes.

Exactly, yes.

That's where the lethal rate and a "D" value come in.. You are hunting specific microbes and balancing that with an adverse effect on product quality.

Can you help me with the calculation part of the problem?

[Fred25]

What are you trying to do, make beer or anthrax?

[Jhoffa_]

Rofl..

[Georgia_JimD]

The combination of the Einstein and Pythagoras discoveries:
E= m c^2= m ( a^2 + b^2)

[Georgia_JimD]

I accidentally divided by zero and my paper burst into flames.

[Georgia_JimD]

Post office mail pasteurization. The Feds are taking bids for contracts...

[savedbygrace]

My question is: How is the total number of PU's calculated over a production run where the times and temperatures vary?

Simple. If you pass wind at least one time in a warm, windless environment, the PU factor is unbearably high. Don't stop to measure it; just get the heck outa there pronto. (And as you do, motion in such a way as to cast the blame on someone else.)

[Jhoffa_]

Thank you for your assistance in this matter. Actually, I have a job making milk for your local supermarket and I will apply these scientific principles immediately!

Sorry bout the paper Jim.. :(

[savedbygrace]

Phew, that's a relief. I don't drink milk, so I'm not in danger.

[Fred25]

Post office mail pasteurization. The Feds are taking bids for contracts...

I boil all my incoming letters at 212 degrees for 15 minutes.

[Jhoffa_]

I boil all my incoming letters at 212 degrees for 15 minutes.

I'd give you a D factor for that, but I don't have the spreadsheet handy.

[Jhoffa_]

Bump?

[Georgia_JimD]

See if this site about Food Engineering helps.

[Jhoffa_]

Insight Please?

I remember you talking extensively about microbes, government experimentation up to and including chimneys with gas jets in them.

Know anything about Pasteurization and food safety?

[Jhoffa_]

Ping!