Home Shroomok - Home Mushrooms Cultivation Consulting

Mycelium metabolites or mushroom pee

From Shroomok | Let's grow magic mushrooms
< Previous
Next >️
📖
1.How to grow mushrooms at home
2.Stuff to buy for growing
3.Liquid mushroom spore syringe
4.Choose and prepare substrate
5.Cooking the substrate
6.Preparing Jars for spawn
7.Substrate sterilization (before adding mushroom spores)
8.Inoculation without glove box
9.Incubator control
10.Casing of mushroom cakes
11.Cold shock for mushrooms
12.DIY Grow Box. Mushrooms fruiting conditions
13.Start of fruiting, pinhead initiation
14.How to make mushroom spore prints
15.Mushroom harvesting time
16.How to dry and store mushrooms
17.Rehydration of mushroom cakes
18.Second flush of mushroom harvest
19.Third flush of mushroom harvest
20.Fourth flush of mushroom harvest
21.Fifth flush of mushroom harvest
22.Sixth flush of mushroom harvest
23.Disposing of mushrooms cakes
24.Mushroom growing statistics with charts
25.Mushroom growing experiments
26.Mushroom growing conclusions
27.Overlay & Stroma
28.Mushroom aborts
👉Mushroom metabolites
30.Mushrooms contaminants
31.Mushroom candies and mushroom chocolate recipes
32.Mushroom capsules for microdosing
33.Mushroom microdosing
34.Preparing for psychedelic trip
35.How to deal with bad trip
36.Mushroom tea
37.Liquid spore VS Liquid culture
38.Grain to grain transfer

Yellow liquid on mushroom mycelium: contamination or normal fungal reaction?

Sometimes you can observe healthy mycelium with small amounts of clear orange, yellow or brown liquid forming on the surface of the mycelium.

It can be noticed in spawn jars during colonization period.

Secondary metabolites in spawn jar
Yellow liquid (metabolites) in spawn jar


It can be noticed on mushroom cake during casing layer colonization or fruiting period.

Mushroom piss
Mushroom secondary metabolites or exudate


What is it? Is it something to be wary of?


What is Secondary Metabolites?

Secondary metabolites (aka mushroom exudate, mushroom urea, mushroom piss) — it is a waste products of fungal metabolism or mushroom exudate.

🔬 Biochemical analyses of the exudates showed that acid phosphatase, β-glucosidase, acid and alkaline protease, RNase polygalacturonase and cellulase enzymes as well as oxalic acid and ammonia were present.

In short and simpler they consist of acids, exopolysaccharides, waste products and antibiotics, which are naturally secreted by mycelium cells.

Often they can be found on different kind of mushrooms: wild mushrooms, magic mushrooms and various edible mushrooms.

Metabolites are natural immune response of the mycelium to stress or pathogens.


How to determine metabolites?

✅ Liquid is transparent.

✅ WITHOUT slime.

✅ WITHOUT odor.

✅ Color: yellow, orange or brown.

Secondary metabolites on mycelium
Yellow and orange metabolites on mycelium


Mycelium waste products and overlay
Mycelium waste products and overlay
Psilocybin mushrooms mycelium products
Yellow-brown spots is mushroom mycelium products


Mycelium Metabolites or Wet Bubble

If mycelium ingests excess of anything that may become toxic enough to eventually harm, disable or kill it, mycelium produces waste exopolysaccharides, acids, excrete enzymes and tries rid itself off that excess.

Metabolites are a reaction to stress or response to contamination (especially bacteria). Mushroom urea often accompanied overlay.

Metabolites (or exudate) is a natural mushroom antibiotic and immunity reaction. It’s not contamination itself. But it means that your mycelium struggles with pathogen microorganisms or stress.

Mycelium urea. Mycelium pee. Mycelium piss. Metabolites or exudate
Metabolites or exudate as immunity reaction of mycelium


🔴 Newbie cultivators often confuse secondary Metabolites with Mycogon aka Wet Bubble contamination.

It seems similar to metabolites, but it has its specific features (an amber liquid with a rotten smell oozes from primordia and clots of mycelium).

Mycogone or Wet Bubble contamination
Mycogone or Wet Bubble contamination


Main causes of mycelium metabolites

Metabolites are a reaction to:

🆘 lack of fresh air exchange

🆘 direct sunlight

🆘 high temperature

🆘 lack or excess of nutrients in the substrate

🆘 mycelium tissue damage

🆘 a symptom that mycelium is fighting with pathogenic microorganisms

🆘 this also happens if you mix several strains of mushrooms and they struggle between each other

🆘 a signal that mycelium is fighting pathogenic microorganisms

🆘 appear with stroma and overlay

Check out Fruiting conditions. Pinhead initiation. Growing parameters for Psilocybe Cubensis to adjust microclimate.

If mushroom mycelium struggles with contaminants, such mushroom cake requires close attention. Very often mycelium copes with mild contamination successfully. However, if slime and/or odor appears, such mushroom cake or spawn jar should be disposed immediately.

Fungal pigmentation


Occasionally, snow-white mycelium can turn beige, yellow or even brown during colonization period in the jar or during fruiting period in the growbox. It is also a kind of fungus exudate — waste products of mycelium.

Yellow spots on mushroom mycelium
Mycelium pigmentation

This case can be as a reaction of fungal immunity to a minor contamination. It means mycelium struggles successfully! Observe and be attentive.

Minor pigmentation is very common in mushroom growing and nothing to worry about!

🔴 Newbie cultivators confuse pigmentation with Aspergillus yellow spp. (Aspergillus flavus)

Yellow Aspergillus on mushroom mycelium
Aspergillus flavus on mushroom mycelium

Check out our full guide of all possible contaminants at all stages of mushroom cultivation in How To Recognize whether Mushrooms Contaminated or Not section.

Have a Happy Growing and Healthy Shrooms 🙏

Feel free to ask any questions or share your own experience in Shroomok Discord or Shroomok Telegram Chat or in comments to this post ⬇️⬇️⬇️


< Previous
Next >️
📖
1.How to grow mushrooms at home
2.Stuff to buy for growing
3.Liquid mushroom spore syringe
4.Choose and prepare substrate
5.Cooking the substrate
6.Preparing Jars for spawn
7.Substrate sterilization (before adding mushroom spores)
8.Inoculation without glove box
9.Incubator control
10.Casing of mushroom cakes
11.Cold shock for mushrooms
12.DIY Grow Box. Mushrooms fruiting conditions
13.Start of fruiting, pinhead initiation
14.How to make mushroom spore prints
15.Mushroom harvesting time
16.How to dry and store mushrooms
17.Rehydration of mushroom cakes
18.Second flush of mushroom harvest
19.Third flush of mushroom harvest
20.Fourth flush of mushroom harvest
21.Fifth flush of mushroom harvest
22.Sixth flush of mushroom harvest
23.Disposing of mushrooms cakes
24.Mushroom growing statistics with charts
25.Mushroom growing experiments
26.Mushroom growing conclusions
27.Overlay & Stroma
28.Mushroom aborts
👉Mushroom metabolites
30.Mushrooms contaminants
31.Mushroom candies and mushroom chocolate recipes
32.Mushroom capsules for microdosing
33.Mushroom microdosing
34.Preparing for psychedelic trip
35.How to deal with bad trip
36.Mushroom tea
37.Liquid spore VS Liquid culture
38.Grain to grain transfer

Join our community