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Offlineragadinks
MrBeatle
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Sugars and Mushrooms ?
    #2929277 - 07/26/04 05:52 PM (17 years, 2 months ago)

When I make liquid mycelium I let mycelium grow in honey water or a dextrose solution.
I wonder what the difference between all the sugars like dextrose, glucose, fructose, maltose etc. is, and how these differences affect the mushrooms?
Could somebody with a some chemical knowledge explain that ?


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InvisibleATWAR
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Re: Sugars and Mushrooms ? [Re: ragadinks]
    #2929289 - 07/26/04 05:56 PM (17 years, 2 months ago)

Well,
Usually the more complex the sugar or carbohydrate is, the healthier the mycelium will grow. When it works harder to break it down, it is said to grow more vigorously without dying off as fast...


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Offlineragadinks
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Re: Sugars and Mushrooms ? [Re: ATWAR]
    #2929302 - 07/26/04 06:00 PM (17 years, 2 months ago)

And what is the chemical difference between a complex sugar and not so complex sugar ?
Is dextrose for example more complex than fructose ?


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InvisibleATWAR
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Re: Sugars and Mushrooms ? [Re: ragadinks]
    #2929323 - 07/26/04 06:11 PM (17 years, 2 months ago)

Quote:

ragadinks said:
Is dextrose for example more complex than fructose ?




Dextrose: C6-H11-O6
Fructose: C6-H12-O6
It would appear to be slightly less complex...
Maltose: C12-H22-O11 <- an even larger (complex) molecule.

I am by no means an expert on this, I only have a basic knowledge. I am simply stating the reasons why the more complex sources of sugars and carbohydrates are preferred..


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Offlineragadinks
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Re: Sugars and Mushrooms ? [Re: ATWAR]
    #2929517 - 07/26/04 07:37 PM (17 years, 2 months ago)

Thanks for sharing your knowledge - it is rather new and interesting to me.


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Invisiblemycopsycho
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Re: Sugars and Mushrooms ? [Re: ragadinks]
    #2929535 - 07/26/04 07:41 PM (17 years, 2 months ago)

where does maltose and glucose occur?


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Offlineragadinks
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Re: Sugars and Mushrooms ? [Re: mycopsycho]
    #2929702 - 07/26/04 08:27 PM (17 years, 2 months ago)

Not sure - but maltose might be in malt ?


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InvisibleATWAR
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Re: Sugars and Mushrooms ? [Re: ragadinks]
    #2929817 - 07/26/04 09:09 PM (17 years, 2 months ago)

Yes. Maltose is malt sugar. Dextrose is glucose...


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Invisiblemycopsycho
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Re: Sugars and Mushrooms ? [Re: ATWAR]
    #2931451 - 07/27/04 05:50 AM (17 years, 2 months ago)

alrighty then thanks!


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I Am The Sickness.

Diploid: I think adults have a right to make stupid decisions and it's nobody else's fucking business.


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InvisibleATWAR
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Re: Sugars and Mushrooms ? [Re: ragadinks]
    #2931502 - 07/27/04 06:24 AM (17 years, 2 months ago)

A bit better of a description of why more complex sources are preferred:

Quote:


all fungi have a common mode of nutrition: ABSORPTION
if available food is a simple organic compound like simple sugars
or amino acids and they are water soluble...then the mycelium can
transport it directly through the cell wall

if food is insoluble or a large, complex organic compound like
cellulose or pectin the food must be digested first...substrate
specific enzymes are produced and released to break down food into
soluble compounds and are then transported through the cell wall




It is the digestion of these complex compounds that keeps the mycelium vigorous. When grown on simple sources they lack the enzymes to break down the more complex sources. The mycelium will need to become adjusted to the new source, and develop the new enzymes. It is also possible that the mycelium may lose vigor and decline faster genetically, or become media selective totally losing the ability to digest complex substrates.

I wonder if Karo teks or other similar means of germinating spores results in the proliferation of strains that do well with simple sources only. Thus the resulting mycelium would not perform ideally on the more complex sources such as grains as when spores were germinated on it directly.
Good question, it seems logical....


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Invisiblefastfred
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Re: Sugars and Mushrooms ? [Re: ATWAR]
    #2931526 - 07/27/04 06:56 AM (17 years, 2 months ago)

The mushroom must still grow on a normal substrate at some point in it's cycle, so no actual selection is performed.


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Invisiblemycopsycho
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Re: Sugars and Mushrooms ? [Re: fastfred]
    #2931725 - 07/27/04 10:21 AM (17 years, 2 months ago)

i have some malt, maybe i'll try a malt jar and see how that compares to karo. BTW atwar... what medication are you not supposed to eat grapefruit type stuff with?


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I Am The Sickness.

Diploid: I think adults have a right to make stupid decisions and it's nobody else's fucking business.


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