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North Spore Shop: Injection Grain Bag, North Spore Mushroom Grow Kits & Cultivation Supplies

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OfflineBigGayAl
psilophiliac

Registered: 04/17/03
Posts: 1
Last seen: 20 years, 11 months
Microwave oven pressure sterilisation?
    #1467940 - 04/17/03 04:25 PM (20 years, 11 months ago)

If one were to microwave cakes in capped glass jars, would the pressure increase and subsequent rise in the boiling point of water allow the cake to reach sterilisation temperatures (250F), or would the jar be likely to explode?

I'd be interested in trying this, as I don't own a pressure cooker, and it'd be simple and effective, but I'm not going to try it if my microwave oven door is at stake :grin:

Assuming all of the matter to be sterilised is >=250F, how long should it remain that way before it can be assumed sterile? 

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InvisibleEvolving
Resident Cynic

Registered: 10/01/02
Posts: 5,385
Loc: Apt #6, The Village
Re: Microwave oven pressure sterilisation? [Re: BigGayAl]
    #1468615 - 04/17/03 08:56 PM (20 years, 11 months ago)

The jar would likely explode. As to what pressure (and hence temperature) it would reach, you have to ask the jar manufacturer. This is an experiment I wouldn't try, more than the microwave door would be at stake (IMHO).


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To call humans 'rational beings' does injustice to the term, 'rational.'  Humans are capable of rational thought, but it is not their essence.  Humans are animals, beasts with complex brains.  Humans, more often than not, utilize their cerebrum to rationalize what their primal instincts, their preconceived notions, and their emotional desires have presented as goals - humans are rationalizing beings.

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OfflineBigJohnson
Whoa! You guysneed to lightenup!

Registered: 02/04/03
Posts: 716
Loc: The Yard
Last seen: 20 years, 8 months
Re: Microwave oven pressure sterilisation? [Re: Evolving]
    #1469760 - 04/18/03 08:58 AM (20 years, 11 months ago)

Micro sterilization seems like it should work, but it doesn't. Too bad :frown:


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Should the US relegalize drugs?

http://www.lp.org/issues/relegalize.html

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Offlineaugiemolly
bobobonbobobovich
Registered: 03/05/03
Posts: 31
Last seen: 19 years, 10 months
Re: Microwave oven pressure sterilisation? [Re: BigJohnson]
    #1469820 - 04/18/03 09:32 AM (20 years, 11 months ago)

I've seem microwave "pressure" cookers and wondered if they work. Small but looks like half pints would fit. Anyone tried these?


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Listen to the Gourds!!!

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OfflineBigJohnson
Whoa! You guysneed to lightenup!

Registered: 02/04/03
Posts: 716
Loc: The Yard
Last seen: 20 years, 8 months
Re: Microwave oven pressure sterilisation? [Re: augiemolly]
    #1470022 - 04/18/03 10:40 AM (20 years, 11 months ago)

If you can't buy a PC, you're just going to have to stick with BRF cakes. Those micro-PCs will probably work with BRF, but I wouldn't trust it for grains.


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Should the US relegalize drugs?

http://www.lp.org/issues/relegalize.html

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Invisibledog
straw dog

Registered: 06/20/02
Posts: 2,790
Loc: Route 66
Re: Microwave oven pressure sterilisation? [Re: BigGayAl]
    #1470039 - 04/18/03 10:44 AM (20 years, 11 months ago)

Quote:

If one were to microwave cakes in capped glass jars



ka-BOOM!


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Fascism (fash'izem) n. A governmental system marked by a centralized dictatorship, stringent socioeconomic controls, and often belligerent nationalism. see also: the Bush Administration.

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InvisibleEvolving
Resident Cynic

Registered: 10/01/02
Posts: 5,385
Loc: Apt #6, The Village
Re: Microwave oven pressure sterilisation? [Re: BigJohnson]
    #1471026 - 04/18/03 04:56 PM (20 years, 11 months ago)

Quote:

Micro sterilization seems like it should work, but it doesn't. Too bad :frown: 



I have had good results with it (using the shallow glad disposable microwave containers -  deep containers don't allow the microwaves to penetrate sufficiently), better in fact than boiling jars. 


--------------------
To call humans 'rational beings' does injustice to the term, 'rational.'  Humans are capable of rational thought, but it is not their essence.  Humans are animals, beasts with complex brains.  Humans, more often than not, utilize their cerebrum to rationalize what their primal instincts, their preconceived notions, and their emotional desires have presented as goals - humans are rationalizing beings.

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Offlinehighwayman
long hair, butno hippie

Registered: 12/03/02
Posts: 106
Last seen: 19 years, 9 months
Re: Microwave oven pressure sterilisation? [Re: Evolving]
    #1471284 - 04/18/03 06:43 PM (20 years, 11 months ago)

Yeah not to mention if you use metal lids, you'll see lots of sparks. I had corn dogs w/ plastic wrappers that were tied on by a metal twist tie once. Didn't notice the twist tie was there and threw the whole thing in the microwave. When I came back to get my corn dog, the twist tie had completely disintigrated and blew up the stick right at the base of the corn dog. Imagine what a kerr jar lid could do....

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InvisibleTrippinSLIM
Cosmonaut

Registered: 04/26/03
Posts: 42
Re: Microwave oven pressure sterilisation? [Re: BigGayAl]
    #1501245 - 04/28/03 04:00 PM (20 years, 10 months ago)

I wouldn't put my jars in the microwave. Hell no.

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Offlinemossie
curandero

Registered: 04/17/03
Posts: 66
Loc: dung street
Last seen: 20 years, 10 months
Re: Microwave oven pressure sterilisation? [Re: TrippinSLIM]
    #1501356 - 04/28/03 04:23 PM (20 years, 10 months ago)

i microwaved 50/50+ one time to sterilize and it caught on fire. i think because of the verm.


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Better is a dinner of herbs where love is, than a stalled ox and hatred therewith. -proverbs 15:17

Edited by mossie (04/28/03 04:24 PM)

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OfflineJohnnyRespect
Nomadic Wanderer
Registered: 04/16/03
Posts: 676
Loc: East Coast
Last seen: 20 years, 9 months
Re: Microwave oven pressure sterilisation? [Re: mossie]
    #1501486 - 04/28/03 05:07 PM (20 years, 10 months ago)

I've heard that newer microwaves don't have that nasty interaction with metal that older ones did, but that info could very well be wrong. I don't see a way to sterilize the material in the jars. If you laid it out flat (maybe an inch or so deep) in a plastic tray and had some excess water in there that could cook out, you could nuke it until it steamed, but I don't know if even that would do it.

pz


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As I felt the soft cool mud squish between my toes, I thought, Man, these are not very good shoes!

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North Spore Shop: Injection Grain Bag, North Spore Mushroom Grow Kits & Cultivation Supplies


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