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Mushrooms, Mycology and Psychedelics > Mushroom Cultivation
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does heat actually hurt actives?
    #6583334 -

I want facts not opinions, I've heard it does and I've also heard that its completely untrue. Im trying to decide if i should buy and use a food dehydrator

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Re: does heat actually hurt actives? [Re: bucket949]
    #6583389 -

it definitely does affect them. try PCing an eighth then eating it.

*opinion* a food dehydrator working under 100 degrees does not *noticeably* effect potency.

-Prim


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"Power to the peaceful"

-Micheal Franti and Spearhead

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Re: does heat actually hurt actives? [Re: Primate]
    #6583773 -

I was forced to buy a ronco dehydrator in a pinch and it runs at ~140°F. My understanding is that 140°F is right at the upper limit of the safe zone. I've been told that mushrooms can be cooked at high heat for short periods of time without any significant potency loss. It's the sustained temps that do damage. Does anyone have first hand knowledge of this?

I would MUCH rather have a nesco dehydrator that runs cooler and will be replacing the ronco now that my monotubs are done flushing.


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Living on a no-Flash diet is way easier than you think. Give it a shot.

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Re: does heat actually hurt actives? [Re: Bacchus]
    #6584401 -

The Arrhenius equation basically states that for every 10C increase in temperature you're going to double the rate of reaction.

So if you raise the temp by 10C and you dry your mushies in half the time you will break even. If you cut the drying time by 25% (a more realistic figure vs fan drying) by raising the temp by 10 C then you'll be losing actives.

140F is raising the temp by about 20C, so you're going to be at least quadrupling the rate of reaction. So unless you're somehow able to dry them 4 times faster using the dehydrator then you're losing potency.

Increasing airflow is a far better way to dry vs heat IMO.


-FF

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Re: does heat actually hurt actives? [Re: fastfred]
    #6584432 -

None of the above explains why you can cook them on a BBQ grill at 1000 degrees and they're still potent as hell. In addition, people have boiled them into tea for years, and if anything, it hits harder than eating them when they've never been exposed to heat. There's entirely too much opinion and no facts being presented.

Long term heat 'may' have an effect, but short term heat seems not to cause noticeable degradation. People with actual experience using food dehydrators report little to no loss in potency from drying that way.
RR


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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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Re: does heat actually hurt actives? [Re: fastfred]
    #6584433 -

There is always the option of opening whichever unit you purchase and disconnecting the heating element altogether so that only the fan blows within the unit... :shrug:


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:justdontknow: Don't mistake my tone for a "matter-of-fact" attitude.  I'm just presenting what I believe to be correct, until I'm corrected...

- How Myco-Curious Prepares Coir & Compost Substrates
- How Myco-Curious Builds A Bulk Humidifier
- How Myco-Curious Builds An Automated Greenhouse
------------------------------------
figgusfiddus said:
Keep in mind that inoculating or whatever in front of a flow hood won't help your bad substrate, your bad inoculant, your bad sterile procedure, etc. etc. etc. It's not a +3 flowhood of magic, it's just a tool.

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Re: does heat actually hurt actives? [Re: mycocurious]
    #6584524 -

Or perhaps wiring a dimmer switch inline with it to get the desired temperature.

Maybe I should make a Tek?

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Re: does heat actually hurt actives? [Re: Defconx3] * 1
    #6584530 -

You know, you probably could get away with having a rheostat type dimmer switch on a dehydrator but you'd have to realize you'd also be limiting the voltage to the fan at the same time so you'd be decreasing air-flow along with the heat... :shrug:


--------------------
:justdontknow: Don't mistake my tone for a "matter-of-fact" attitude.  I'm just presenting what I believe to be correct, until I'm corrected...

- How Myco-Curious Prepares Coir & Compost Substrates
- How Myco-Curious Builds A Bulk Humidifier
- How Myco-Curious Builds An Automated Greenhouse
------------------------------------
figgusfiddus said:
Keep in mind that inoculating or whatever in front of a flow hood won't help your bad substrate, your bad inoculant, your bad sterile procedure, etc. etc. etc. It's not a +3 flowhood of magic, it's just a tool.

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Re: does heat actually hurt actives? [Re: mycocurious]
    #6584673 -

Actually, it would just burn up the fan motor. A lighting dimmer could control the heat, because a heating element is a resistive load like lights, but the fan, which is an inductive load, would have to bypass the dimmer. The speed of an AC motor is determined by the frequency of the 50hz or 60hz power supply, not the current. If you limit current on an AC motor, it still tries to run the same speed, smoking it.

That's why connecting a motor to a lighting dimmer is a violation of the National Electrical Code. That law was passed because too many people were connecting ceiling fans to dimmers instead of motor speed controllers, thus burning houses down.
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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Re: does heat actually hurt actives? [Re: RogerRabbit]
    #6584714 -

Quote:
RogerRabbit said:

That's why connecting a motor to a lighting dimmer is a violation of the National Electrical Code. That law was passed because too many people were connecting ceiling fans to dimmers instead of motor speed controllers, thus burning houses down.
RR


lol!



@RR, could you please check the pics of my cakes (thread on front page), I've had conflicting info and need to know whether to chuck them out or not.

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Re: does heat actually hurt actives? [Re: mycocurious]
    #6584728 -

mycocurious said:
There is always the option of opening whichever unit you purchase and disconnecting the heating element altogether so that only the fan blows within the unit... :shrug:


exactly what i was going to get at.:thumbup:


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Re: does heat actually hurt actives? [Re: shroomsynergy]
    #6584804 -

I've had problems with drying setups using only desiccant (Dry-Rid, in this case). They work, but it takes days to remove any real amount of moisture from a moderate quantity of fruit. However, fans don't get them "cracker-dry", and the failure to desiccate your product completely will give you inaccurate dosing by weight.

My favorite setup: convection oven at lowest setting (150F in my case) with THE DOOR OPEN for maybe 15, 20 minutes, or until outer surfaces of your mushrooms are nice and dry, and the stalks are firming up. Removing all the moisture that just sits around on or just under the surface is absolutely imperative to keeping out mold post-harvest. There's nothing worse than having to pick and sort through your crop, throwing away perfectly good fruits.

Now, there's no way the mushrooms themselves are heating to 150F this way--they probably aren't getting much higher than 90F or 100F, but warm air is being blown across them all the same, and it's sucking up a lot of moisture. It's great, and it's fast, and there's no logical way the actives are reacting or denaturing at this temp any more than they would at 212F (as with tea, which is a perfectly effective method).

Afterward, you can toss them in your desiccant chamber or keep them as-is, if you think they're dry enough. If you're concerned about keeping track of their weight in an accurate way, I definitely suggest using desiccant.


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FGSFDSFGSFDSFGSFDSFGSFDSFGSFDS
FGSFDSFGSFDSFGSFDSFGSFDSFGSFDS
FGSFDSFGSFDSFGSFDSFGSFDSFGSFDS

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Re: does heat actually hurt actives? [Re: RogerRabbit]
    #6585162 -

RONCO'S don't have a FAN in them.
They work via convection.
They are not worth the plastic, they are made off.
(my opinion)


Set between 95 & 110F, has worked for years.


The Big Daddy, with top & bottom fan/heater units.
Both adjustable heater settings.


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Re: does heat actually hurt actives? [Re: agar]
    #6585224 -

Why not just use a fan. No need to go high tech and waste your money. Unless speed is key. Just my opinion.

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Re: does heat actually hurt actives? [Re: agar]
    #6585241 -

i think i'm in love...

Seriously though, what model's do you have that are using the same set of expanda-trays? From the pic it looks like a snackmaster top with an american harvest garden master on the bottom...???


--------------------
:justdontknow: Don't mistake my tone for a "matter-of-fact" attitude.  I'm just presenting what I believe to be correct, until I'm corrected...

- How Myco-Curious Prepares Coir & Compost Substrates
- How Myco-Curious Builds A Bulk Humidifier
- How Myco-Curious Builds An Automated Greenhouse
------------------------------------
figgusfiddus said:
Keep in mind that inoculating or whatever in front of a flow hood won't help your bad substrate, your bad inoculant, your bad sterile procedure, etc. etc. etc. It's not a +3 flowhood of magic, it's just a tool.

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Re: does heat actually hurt actives? [Re: mycocurious]
    #6586827 -

i dry my shrooms the easy way .. wrap them in a thin towel and place
them above a light or on top of a monitor or wherever it's warm.
cracker dry shrooms in 2 days.

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