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InvisibleDoc_T
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Coffee grounds in grain spawn jars?
    #13819525 - 01/20/11 10:07 AM (13 years, 11 months ago)

I'd like to use coffee in bulk substrate, but I'm too lazy to do proper pasteurization.
I've had some success sterilizing coffee grounds (I can them) and adding during to the dry coir before the boiling water.
Also, I've mixed them in as I go along, sprinkling sterile grounds into prepared bulk sub.

It's not ideal. Sterile coffee grounds, or sterile anything, represents a contam risk.
So I thought about putting the coffee grounds into the grain jars so it's all pre-colonized.
I'm not going to use less grain, just add a quarter cup or so of coffee to each jar when I add the grain.

Thoughts?


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InvisibleLeopardMan
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Re: Coffee grounds in grain spawn jars? [Re: Doc_T]
    #13819558 - 01/20/11 10:18 AM (13 years, 11 months ago)

It's worth a try in my opinion. Nice idea :thumbup:


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Offlinek00laid
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Re: Coffee grounds in grain spawn jars? [Re: LeopardMan]
    #13819563 - 01/20/11 10:20 AM (13 years, 11 months ago)

have you experience increased contams from adding sterile grounds?


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InvisibleDoc_T
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Re: Coffee grounds in grain spawn jars? [Re: k00laid]
    #13819612 - 01/20/11 10:32 AM (13 years, 11 months ago)

Nothing scientific. :shrug:


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Offlinek00laid
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Re: Coffee grounds in grain spawn jars? [Re: Doc_T]
    #13819615 - 01/20/11 10:33 AM (13 years, 11 months ago)

j/w


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OfflineObject110011
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Re: Coffee grounds in grain spawn jars? [Re: k00laid]
    #13819666 - 01/20/11 10:46 AM (13 years, 11 months ago)

Ive got a bunch of grain spawn jars with coffee grinds in them.
Today I have been transferring onto cardboard- they are rieshi.
I did notice that all of the small black flakes that were on the glass
had mycellial growth.

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OfflineMikeallojee
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Re: Coffee grounds in grain spawn jars? [Re: k00laid]
    #13819672 - 01/20/11 10:47 AM (13 years, 11 months ago)

I don't drink coffee so to get the coffee boost I use a coffee press and pour the entire contents coffee grounds and all into the soaking water before I boil and pc. Ive never had any problems. It actually seems to help growth. myc

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Invisiblehiggledy-piggledy

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Re: Coffee grounds in grain spawn jars? [Re: Mikeallojee]
    #13819872 - 01/20/11 11:33 AM (13 years, 11 months ago)

imo theres no need to use the grounds.

all the compounds are (hot) water soluble; so why take the entire muck?


- make coffee
- dilute
- use that to soak your grains in

end of story.

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Invisible13shroomsM
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Re: Coffee grounds in grain spawn jars? [Re: higgledy-piggledy]
    #13820110 - 01/20/11 12:24 PM (13 years, 11 months ago)

when I did/used to use coffee grounds I used them in my grain soak and added a few pinches to my jars b4 PCing along with adding a few cups to my sub.  I noticed nothing different with or without it but I was inoculating with MS so not its that reliable.:mushroomgrow:

I did like having grounds in my ATL#7 jars.  made the stones taste better IMO. :shrug:



now I use gypsum only (for all stages, grain soak/pre-PC/bulk prep) instead coffee for added nutes.:mushroom2:

coffee is 50/50 with contams if not prepped (pasteurized/sterilized-whatever your preferred method is) properly. :smirk:


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OfflineMalachi Constant
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Re: Coffee grounds in grain spawn jars? [Re: higgledy-piggledy]
    #13820114 - 01/20/11 12:25 PM (13 years, 11 months ago)

do you buy your sub prepasturized?  I feel like adding coffee or coir too good hpoo compost just adds to the contam risk of an already sufficient substrate. If it ain't broke, don't fix it approach to the whole thing.

If I want to add coffee to Damions coir tek I just boil coffee grounds in my water for the pasteurizing. Everything is sterile going in, and not only do the grounds get pasteurized in the sub, your grounds also leech into the water which I think helps better disperse nutrients evenly.


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InvisibleN2DFlood
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Re: Coffee grounds in grain spawn jars? [Re: Malachi Constant]
    #13820693 - 01/20/11 02:02 PM (13 years, 11 months ago)

I did try this once, actually i added about 1/2 cup coffee grounds (not spent) to the soak water on a test batch of WBS just to see what would happen, after rinse there were still grains in the WBS.  did everything per your tek, even chunked the floaters.

I PC'd them at 15psi for 90 min.

All 6 got cobweb within 5 days out of the PC... i cant blame the coffee, but since then ive been gun shy and dont use it, and had very few contams using your tek.  I did inoculate the jars with spore solution, and didnt leave out a control... so..oops.

FWIW

-Flood

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Offlinegornyhuy
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Re: Coffee grounds in grain spawn jars? [Re: Malachi Constant]
    #13820711 - 01/20/11 02:05 PM (13 years, 11 months ago)

I'd be interested in learning 1)if the nitrogen-contributing portion of coffee is in fact water-soluble and 2)if coffee water (not grounds) is contam-prone. 

I wonder if just using strong coffee as your pasteurization water could be the solution.


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InvisibleFractalXplora
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Re: Coffee grounds in grain spawn jars? [Re: gornyhuy]
    #13821068 - 01/20/11 02:58 PM (13 years, 11 months ago)

ive added grounds to grain jars Doc with no problem, wether it does any good is anyones guess. :shrug:


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Invisibleandymc
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Re: Coffee grounds in grain spawn jars? [Re: gornyhuy]
    #13821110 - 01/20/11 03:04 PM (13 years, 11 months ago)

Quote:

gornyhuy said:
I'd be interested in learning 1)if the nitrogen-contributing portion of coffee is in fact water-soluble and 2)if coffee water (not grounds) is contam-prone. 

I wonder if just using strong coffee as your pasteurization water could be the solution.




IME if you leave plain liquid coffee out for a few days, it'll grow mold.


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Invisibleandymc
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Re: Coffee grounds in grain spawn jars? [Re: higgledy-piggledy]
    #13821117 - 01/20/11 03:05 PM (13 years, 11 months ago)

Quote:

higgledy-piggledy said:
all the compounds are (hot) water soluble; so why take the entire muck?




So, all the "muck" that is not water-soluble contains no compounds, hmm? :rolleyes:


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InvisibleDoc_T
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Re: Coffee grounds in grain spawn jars? [Re: andymc]
    #13821125 - 01/20/11 03:07 PM (13 years, 11 months ago)

Agreed w/Andy, liquid coffee will grow mold.
I'm soaking some WBS now. I'm making half gallon jars, so I'll do like a half cup of coffee grounds and 5 cups cooked grain.
Coffee in two jars, two without, g2g inoculation. Is the plan.


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InvisibleN2DFlood
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Re: Coffee grounds in grain spawn jars? [Re: Doc_T]
    #13821198 - 01/20/11 03:17 PM (13 years, 11 months ago)

oooh maybe i'll get over my fear of coffee.  Thanks for a proper experiment.

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Invisiblehiggledy-piggledy

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Re: Coffee grounds in grain spawn jars? [Re: andymc]
    #13824583 - 01/21/11 04:15 AM (13 years, 11 months ago)

Quote:

andymc said:
so, all the "muck" that is not water-soluble contains no compounds, hmm? :rolleyes:



no, it doesnt mr. rolleyes; at least none which we are interested in when using coffee.

you want the substances which are in the muck, the nitrogenous ones.

thats why you extract them. after doing this the muck is useless.

the grounds may contain carbohydrates which the myc can use as food but thats not what we are talking about and not our intention when using coffee.

when talking about using coffee or the grounds as an additive in the substrate, we are talking about providing N.

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Invisibleandymc
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Re: Coffee grounds in grain spawn jars? [Re: higgledy-piggledy]
    #13824598 - 01/21/11 04:31 AM (13 years, 11 months ago)

Quote:

higgledy-piggledy said:
Quote:

andymc said:
so, all the "muck" that is not water-soluble contains no compounds, hmm? :rolleyes:



no, it doesnt mr. rolleyes; at least none which we are interested in when using coffee.




Quote:

RogerRabbit said:
Spent coffee grinds(after brewing) are a great bulk substrate material though.
RR




I guess you're right.  I guess everyone (such as RR) who uses spent coffee grounds in their substrates is just being silly.

According to RR there are hundreds of compounds in coffee.  Can you list which ones are we "interested in"?


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Invisibleandymc
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Re: Coffee grounds in grain spawn jars? [Re: higgledy-piggledy]
    #13824768 - 01/21/11 07:07 AM (13 years, 11 months ago)

Quote:

higgledy-piggledy said:
imo theres no need to use the grounds.

all the compounds are (hot) water soluble; so why take the entire muck?

- make coffee
- dilute
- use that to soak your grains in

end of story.



Quote:

higgledy-piggledy said:

you want the substances which are in the muck, the nitrogenous ones.

thats why you extract them. after doing this the muck is useless.

the grounds may contain carbohydrates which the myc can use as food but thats not what we are talking about and not our intention when using coffee.

when talking about using coffee or the grounds as an additive in the substrate, we are talking about providing N.




Oh, is that what we're talking about, when we talk about using coffee grounds?  :rolleyes:

It seems to be a bit of a habit with you, to answer questions off the top of your head without actually knowing much about the subject (don't make me post examples -- I can't be bothered to dig them up, and you don't want to be embarrassed).

Here's some info from WSU about what's in spent coffee grounds:

Quote:

Since coffee is extracted in water, most of the hydrophobic compounds, including oils, lipids, triglycerides, and fatty acids remain in the grounds, as do insoluble carbohydrates like cellulose and various indigestible sugars. Structural lignin, protective phenolics, and the wonderful aroma-producing essential oils are also left over from the brewing process. It’s this last group of chemicals that are reported to have antioxidant and antimicrobial properties.




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