I. Substrate preparation [8 days]
1) I sorted out oats (1.5 kg) and wheat (0.9 kg). It took about 6 hours to clean the grain from trash. Weighed cereals to calculate the antibiotic during decoction. I thought about numerology and the number 13 ๐ I realized that January 13 should be a good date to start actions.
2) 12.01 Soaked cereals in boiling water from a kettle. A couple of years ago I soaked it in cold tap water, as some schroomers recommend on thematic forums, but overnight the cereals began to sprout. Since then, I have been pouring boiling water so it does not happen. In my opinion, this does not affect the adaptability of contaminants to subsequent thermal processing. The cereals were in the water for a day (t = 17C - 19C).
3) 13.01 Boiled cereals with the addition of an antibiotic: oats within 20 minutes after boiling with 750 mg of chloramphenicol, wheat 15 minutes after boiling with 500 mg of chloramphenicol. The antibiotic was simply crumbled with two tablespoons (at the rate of 500 mg per 1 kg of dry cereal), poured into pots and stirred for several minutes.
4) I washed the cereals under cold water in a colander (in parts, long and dreary), until the running water drained clear. Drying on a towel for about 2 hours. I made a โtest with a napkinโ (this is when you put the cereals on a napkin, then shake them off and look at the residual moisture), a small stain of moisture remained, but I decided not to dry further and add vermiculite to my substrate.
5) Mixed cereals, adding vermiculite (about 1 l) and chalk (100 g). The result was approximately 9 liters of substrate. It turned out much more than I expected :)
6) Distributed the substrate into one-liter jars: 1 cm of perlite on the bottom (I put vermiculite in some of the jars, because my perlite was unexpectedly finished halfway through), about 600 ml of the substrate, sterile cotton wool in the holes of caps, covered with foil and secured with an elastic band . It turned out to be 15 cans, filled just above the middle.
7) 13.01-19.01 I did 3-fold fractional pasteurization (that is actually tyndallization). I used nano technology in the form of a large pan and 3 flat stones from the river :) My pan fits 7 cans at one time, so I divided my cans into 2 batches, and decided to pasteurize one can in an airfryer (1.5 hours at t = 110C). I left cans in a closed saucepan until morning. Then they stood at the balcony for a day (t = 16C - 18C), while in the evening I did pasteurization of the second batch of cans. Thus, two days passed between each pasteurization procedure.
II. Inoculation [3 days]
1) 17.01 Boiled water in a pan. Without removing the cap, rinsed the syringe (10 ml) with boiling water, took 9 ml of boiling water, put cotton wool soaked in ethanol under the cap, put the syringe into a zip lock, put it in an upright position in a glass. Thus, I prepared 4 syringes with boiled water for suspension.
2) 18.01 I made a spore suspension. I used prints from my previous cycles. Left spores for rehydration for 2 days (t = 24C).
3) 20.01 I took 1 ml of gentamicin sulfate into each syringe, shaken it so that the suspension solution was mixed with the antibiotic. An hour later, I changed the cotton wool in the caps that had become damp after pasteurization and inoculated jars with a spore suspension. 2-3 ml of suspension was poured along the wall into each jar. I put the cans in boxes on a cabinet (t = 26C - 27C).
@jomolhari, yes, true that! Actually it might be the reason. Last times I got mold I haven't used antibiotics ๐ค great advice, thank you! I'll try again better prepared ๐
@Girl_Scout, sometimes it seems to me that it is impossible to incubate them if an antibiotic has not been used. Any crap in the substrate will definitely turn sour and moldy. For a human these dosages are simply nothing (besides, they will disintegrate in such a time). I suspect that mushrooms in a store (oyster mushroom, for example) are grown only with the use of antibiotics. If you did not use antibiotics while preparing a substrate, then I assure you - this is the reason for failures. All glory to gentamicin ๐
@jomolhari, yes I did a few times, fucked it up half times as well to be honest ๐ couldn't achieve completely sterile conditions.. but the times I succeeded it was fully magical for sure! 3-4 waves of good harvest. I love the process, how fast they develop. I love plants as well I would just say it's different and a bit more usual for me
@@@@@@54degreesnorth, it is production of spore print. It's way of preserving biomaterial for further cycles.
In my case it's sterile piece of foil with spores on it (from a cap of shroom). Some shroomers use plastic or thick paper.
You can use spores print for making spore suspension. Spore suspension is not stored for a long, but prints can be kept in refrigerator for years (or probably centuries ๐).
It is instead of seeds in plants ๐ And unlike plants, the genotype remains stable. The next generation of mushrooms will be identical: F1, F2, F3, etc - all of them will be the same.