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InvisibleM11
White Thumb


Registered: 06/14/09
Posts: 1,840
Re: Spent beer grains in substrate? [Re: HorizonSpawn] * 1
    #14865120 - 08/02/11 11:53 PM (12 years, 7 months ago)

Would the nature of an "icing layer" be worth consideration if one were to mix it with coir for a substrate?  I have heard that icing layers are bad (ie.  exposed grains that are prone to contamination).

That said I bet it will work just fine if you don't use too much. 


--------------------
Of course, then there's the problem of eating vermiculite. On the bright side, it makes your poop and teeth glitter.  Just pretend it's christmas.
-RR

Those mushrooms are fine.  Your friend is a pussy.
-RR

Outdoor Patch

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InvisibleDoctor_Inoc
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Registered: 04/30/11
Posts: 646
Loc: Flag
Re: Spent beer grains in substrate? [Re: M11]
    #14865765 - 08/03/11 03:43 AM (12 years, 7 months ago)

Quote:

M11 said:
Would the nature of an "icing layer" be worth consideration if one were to mix it with coir for a substrate?  I have heard that icing layers are bad (ie.  exposed grains that are prone to contamination).

That said I bet it will work just fine if you don't use too much. 



I think, the nature of a "frosting layer" is NEVER worth consideration.  Exposed grains being more prone to contamination is only HALF of the story.

What makes frosting layers/exposed grains more prone to contamination is the fact that exposed grains tend to dry up.  When grains dry up, they can no longer become colonized by mushroom mycelium and the myce. stalls, creating a nutrient-rich, breeding ground for invader spores.  These spores then gain a foot-holding onto the dried grains before the mycelium'll have a chance to recover, causing infection.

Edit to Add~  OP, concerning your question about what ratio to add the spent beer grains to your sub., I think I would begin experimentation by adding the spent beer grains at roughly 3% by volume of hydrated and pasteurized substrate materials.   

Edited by Doctor_Inoc (08/03/11 04:15 AM)

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Offlineblu shroom
Stranger
Registered: 08/20/10
Posts: 64
Last seen: 11 years, 5 months
Re: Spent beer grains in substrate? [Re: Doctor_Inoc]
    #14866038 - 08/03/11 06:41 AM (12 years, 7 months ago)

I know for a fact that spent grains used for brewing can be used as a substrate additive.  I live in an area with a farmers market and i was talking to the local mushroom guy and he says he uses spent grains from a local microbrewing company.  Not exactly sure of his ratios or anything but seems like a good experiment.

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Offlineidlee
poor boy
Male
Registered: 07/21/11
Posts: 55
Loc: Canada Flag
Last seen: 6 years, 7 months
Re: Spent beer grains in substrate? [Re: blu shroom]
    #14868470 - 08/03/11 05:54 PM (12 years, 7 months ago)

I just did a search on this subject wondering if I would find anything and here we are the last post only 11 hours ago..

I just noticed this ad from a brewery near me:

"400-500 KILOS OF SPENT GRAIN IS PRODUCED AT THIS MICROBREWERY EVERY WEEK AND IS FREE TO WHOEVER CAN USE IT! Spent grain contains roughly 20 percent crude protein and 50 percent dietary fiber, and makes great feed for cattle, pigs, chickens, goats and horses! It's also great for mushroom farming!"

Being a home brewer myself, I hit up the search for some more info.

Is anyone making practical use out of this material?

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Invisiblebootster
Male User Gallery
Registered: 02/22/11
Posts: 1,531
Re: Spent beer grains in substrate? [Re: idlee]
    #14868902 - 08/03/11 07:29 PM (12 years, 7 months ago)

My brewer has many 50 lb (dry) spent grain sacks out every day. I would imagine them to be about 85 lbs after they are discarded. I have thrown them in my garden compost pile but may reconsider to try new things. This sounds interesting.

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OfflineMycowlogist
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Registered: 06/29/08
Posts: 534
Loc: in a galaxy far far away....
Last seen: 10 years, 2 months
Re: Spent beer grains in substrate? [Re: bootster]
    #14869253 - 08/03/11 08:49 PM (12 years, 7 months ago)

I walked by my local brewery and could smell the 45 gallon barrels of spent grain and thought the same thing.  Any one tried it? :popcorn:


--------------------
"And in the end, it's not the years in your life that count. It's the life in your years."  Honest Abe

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Offlineely2121
Vagabond

Registered: 05/02/11
Posts: 385
Loc: 5th dimension
Last seen: 3 years, 1 month
Re: Spent beer grains in substrate? [Re: Mycowlogist]
    #14869581 - 08/03/11 09:48 PM (12 years, 7 months ago)

Pulling up a chair for this.
I need an excuse to get back into home brew haha :smile:

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InvisibleCarl Sagan
Time Dilation Analyst


Registered: 04/19/11
Posts: 922
Loc: Myco-tek.org
Re: Spent beer grains in substrate? [Re: ely2121]
    #14869642 - 08/03/11 10:02 PM (12 years, 7 months ago)

:popcorn:


--------------------
“Sacred cows make the best hamburger”

Mark Twain



Independant Research Foundation

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Offlinemason dixon
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Registered: 08/16/11
Posts: 7
Loc: Huntsville, Alabama
Last seen: 11 years, 10 months
Re: Spent beer grains in substrate? [Re: Carl Sagan]
    #14930754 - 08/16/11 09:30 AM (12 years, 7 months ago)

I'm trying out some king oyster and lions mane on some spent grain from a  stout homebrew this weekend.

My mix is 40 grain, 30 sawdust, 20 popcorn, 8 cardboard, 2 lime.

I tried a 80 sawdust and 20 grain mix with lions mane and maitake a week ago and it is definitely colonizing the grain before the sawdust so I will gradually adjust my mix over the next months to find the sweet spot of grain to other woody ingredients.

I've got a local microbrewery that will be supplying 15 gallons of spent grain every couple weeks and with my homebrew efforts I should have plenty of grain to experiment with. Blue oysters should love the grain, can't wait to try that as well!

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Offlinemarkinnewparis
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Registered: 05/07/11
Posts: 132
Last seen: 1 year, 4 months
Re: Spent beer grains in substrate? [Re: mason dixon]
    #14930802 - 08/16/11 09:41 AM (12 years, 7 months ago)

Good luck I hope it does well for you.... please keep us updated...

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InvisibleCarl Sagan
Time Dilation Analyst


Registered: 04/19/11
Posts: 922
Loc: Myco-tek.org
Re: Spent beer grains in substrate? [Re: mason dixon]
    #14930806 - 08/16/11 09:42 AM (12 years, 7 months ago)

Sounds good d00d :thumbup:

Will you be trying any cubes?


--------------------
“Sacred cows make the best hamburger”

Mark Twain



Independant Research Foundation

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Offlinemason dixon
Stranger
Registered: 08/16/11
Posts: 7
Loc: Huntsville, Alabama
Last seen: 11 years, 10 months
Re: Spent beer grains in substrate? [Re: Carl Sagan]
    #14931326 - 08/16/11 11:51 AM (12 years, 7 months ago)

Might try some cubes next year....will update with pics soon.

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Offlinesuperfunkibey
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Registered: 11/29/10
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Re: Spent beer grains in substrate? [Re: mason dixon]
    #16412600 - 06/21/12 02:16 AM (11 years, 8 months ago)

Has anybody done any new trials using spent grain?

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OfflinePussyFart
Retired Cultivation Extrodinaire
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Registered: 04/08/12
Posts: 22,502
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Trusted Cultivator
Re: Spent beer grains in substrate? [Re: superfunkibey]
    #16412609 - 06/21/12 02:22 AM (11 years, 8 months ago)

:popcorn:

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OfflinePinheadX
Stranger thanyou
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Registered: 04/25/07
Posts: 1,414
Loc: TX Gulf Coast
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Re: Spent beer grains in substrate? [Re: PussyFart]
    #16412614 - 06/21/12 02:25 AM (11 years, 8 months ago)

There are quite a few breweries in my location... Might have to go inquire about these spent grains. Anything to improve my grows.


--------------------
If you want to find psilocybin in species that are not yet known to be psychoactive, you should do chemical tests. That way you won't get sick and die all the time.
- Alan Rockefeller

Reality is that which, when you stop believing in it, doesn't go away."
- Philip K. Dick

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InvisibleJavadog
Continuing along
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Registered: 05/03/10
Posts: 7,385
Loc: USA Flag
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Re: Spent beer grains in substrate? [Re: PinheadX]
    #16412656 - 06/21/12 02:51 AM (11 years, 8 months ago)

Spent grains are usable as a supplement to substrates though I have
not tried this myself.

Good luck,

JD


--------------------
Boyd Rice told my brother that life is a corny pack of freesakes

Myco-tek.org

Edited by Javadog (06/21/12 02:51 AM)

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OfflineTester794
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Registered: 05/31/17
Posts: 1
Last seen: 4 years, 7 months
Re: Spent beer grains in substrate? [Re: deantheking]
    #24375465 - 06/04/17 02:58 AM (6 years, 9 months ago)

Hi,

So, I am a complete noob to mycology but have more than 10 years experience in zymergy (brewing beer)...

I found this: http://plantchicago.org/2017/01/24/spent-grains-mushroom-growing

Posted in Jan this year...

The important bits are "... process in brewing strips the grain of its sugars, it is still high in proteins and cellulose. This makes it an appealing growing medium for fungi, as they feed primarily on cellulose. While the overall nutrient content depends on the type of grain used, there typically is enough to fuel fungi"

"They performed an experiment to see how well spent grain from Whiner Beer Co. could be incorporated into the mushroom growing process. They inoculated the spent grain with Pleurotus djamor (commonly known as the pink oyster mushroom), and waited for the results."

"To their surprise, they found that the mycelia (the rooting structure of a mushroom) colonized the spent grain in 5 days, compared to 10-15 days for the more traditionally used rye berries. That’s 2-3 times faster!"

And from the Journal of Cereal Science 43 (2006) 1–14 in 2004: "BSG has been successfully used as substrate for
cultivation of species of Pleurotus, Agrocybe and Lentinus
(Schildbach et al., 1992). BSG had a good biological
efficiency and high nutritional value as a substrate for
Pleurotus ostreatus, especially when water-rinsed BSG was
used (Wang et al., 2001). It has been proposed that BSG
favours the growth of these mushrooms not only due to its
high protein content (Townsley, 1979) but also to its high
moisture content and physical properties such as particle
size, volume weight, specific density, porosity and waterholding
capacity"


For this forum I feel the following applies;
1) No matter where you got the spent grains or how 'fresh' they are, they have to be processed like any other raw substrate material.
2) If the mycelia really do grow that much faster then the advantage at this stage is the same as for any other organism. Populating the resources before anyone else thereby starving them out... Simply put lower contamination rates.
3) From the smell of spent grains 24-46 hours after brewing, there is alot of surviving microbes. This does many things, influence the pH, improve the levels of some nutrients and decrease the level of others. Most importantly, I feel, if it feels slimy dump it.

Hope that helps answer what appears to be a previously unanswered question.

S

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