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KrissKross
Stranger


Registered: 08/25/04
Posts: 75
Last seen: 10 years, 3 months
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H202 questions
#7503993 - 10/10/07 01:07 AM (16 years, 3 months ago) |
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During my searches on the Shroomery cultivation forum I have come accross two claims concerning h202 that I have not so far been able to verify.
The first claim is that %3 h202(directly from the bottle) when sprayed on a contaminated cake or casing will sometimes produce a fizzing sound, like the sound of carbonated beverages, and that if the cake is uncontaminated this fizzing sound will not occur.
The second claim is that h202 when injected into LC's will break down into o2 and h20, thereby providing the oxygen needed for continued strong growth of the mycelium (in addition to helping agianst contaminants. In otherwords no need for filters or airports or flame sterilized air and you still get the benefit of strong growth.
both claims seem a bit questionable to me, and too easy to not be popular techniques. On the other hand I know of no reasons why they wouldnt work.
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bmy
Stranger to myself



Registered: 09/19/07
Posts: 222
Loc: Planet Earth
Last seen: 13 years, 11 months
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I'm no chemist, but h2o2 is a very powerful oxidizer, so I would guess that the claim that it breaks up to h2o and o2 is true. It would need a catalyst though, which might be provided by the mycelium.
However, as I understand it you shouldn't get your mycelium wet by directly misting it. So it's probably not a good idea to replace this method with FAE.
The fizzing sound may occur from the o2 evaporating, and the lack of it from that the contamination may not have a catalyst for the reaction.
I'm just guessing though. So don't take my word for it.
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Nibin
Getting there



Registered: 11/29/05
Posts: 4,480
Last seen: 10 years, 8 months
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Re: H202 questions [Re: bmy]
#7504224 - 10/10/07 04:57 AM (16 years, 3 months ago) |
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Ever put peroxide on a cut? It is used the same way one used betadine or alcohol.
If there is blood present it fizzes like mad, due to the presence of a certain enzyme inside red blood cells which catalize the breakdown of H2O2 to H20 and O2 The fizz is the oxigen gas being released.
Bacteria and others die because they don't have these enzimes to break down peroxide safely and hydroxyl radicals released by uncontrolled descomposition of peroxide kill them.
Getting to the point, as the old wives tale has it, the fizzing of peroxide is the bacteria and stuff dieing (even though as explained above, that isn't true) which is probably why it is said that fizzing equals contam dieing.
IN FACT: Some bacteria are resistant to peroxide (they are called catalase positive bacteria) and they will make a peroxide solution fizz, the same as our blood will, without dieing.
-------------------- Newcomers guide-----> For all things shroomy
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RogerRabbit
Bans for Pleasure



Registered: 03/26/03
Posts: 42,214
Loc: Seattle
Last seen: 11 months, 3 days
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Re: H202 questions [Re: Nibin]
#7504408 - 10/10/07 07:15 AM (16 years, 3 months ago) |
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Healthy mushroom mycelium will fizzle when 3% peroxide is poured on it. Peroxide also breaks down to oxygen, but whether that is useful to an lc is debatable. Your lc wants air, not pure O2. RR
-------------------- Download Let's Grow Mushrooms semper in excretia sumus solim profundum variat "I've never had a failed experiment. I've only discovered 10,000 methods which do not work." Thomas Edison
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