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How to sterilize tek without a pressure cooker?

- Wed, 01 Jul 2020 04:53:24 EST JFNpcO5P No.903962
File: 1593593604697.jpg -(8344B / 8.15KB, 191x250) Thumbnail displayed, click image for full size. How to sterilize tek without a pressure cooker?
Charlotte Sipperfuck - Thu, 02 Jul 2020 09:47:40 EST 9JchIYMz No.903982 Reply
PF tek doesn't need a pressure cooker. You can use a regular big pot.
Awe' God !!Bwteoy2D - Thu, 02 Jul 2020 17:38:46 EST ol3lKwZ/ No.903983 Reply
You cook for an hour 3 days in a row without taking out of the pot.

Oven still gets water to no more than 100C, so no.
Nigel Bardhood - Sat, 04 Jul 2020 23:23:00 EST xOOWF2VW No.904007 Reply
I just sterillized my first cups, pure white rice half cooked.

I'm not OP tho, used a pressure cooker.

Anons, after myscelium starts to grow do I have to mix it with vermiculite to start fruiting?
Reuben Bupperpog - Sat, 04 Jul 2020 23:45:30 EST 9JchIYMz No.904009 Reply
If you're going to use rice it should be brown, not white. Brown rice has significantly more nutrients for the fungus.

I'd have to check, but I'm not sure vermiculite by itself is a suitable substrate for spawn. I think most people use vermiculite mixed with coco coir. Personally I like ShaperDreaming's shoebox tek, which calls for straight coco coir in a 2:1 ratio to spawn. It's simple and it works.
Hugh Deddlefurk - Mon, 06 Jul 2020 12:45:23 EST JFNpcO5P No.904026 Reply
I could easily get the parts to produce super heated steam which gets over 100 degrees. I have seen steaming methodes for larger grows where they are sterilizing larger ammount of material. Since getting a high pressure vessel of that size, might be difficult.
Martin Sudgewane - Mon, 06 Jul 2020 13:44:24 EST 9JchIYMz No.904028 Reply
That doesn't make sense. Temperature = pressure * volume. How do you raise the temperature of the steam above 100° C without raising the pressure?
Hugh Deddlefurk - Mon, 06 Jul 2020 15:04:36 EST JFNpcO5P No.904029 Reply
1594062276656.jpg -(271261B / 264.90KB, 975x632) Thumbnail displayed, click image for full size.
If you chart the phase diagram the temperature of water can rise without the pressure rising if you allow it to be in it gass form. You can take the phase diagram and just extend the line. If you confine that gass the the pressure would go up, Though if you just allowed it to pass thorough the a vessel then it doesnt change the pressure.
Martin Sudgewane - Mon, 06 Jul 2020 15:19:55 EST 9JchIYMz No.904030 Reply
>If you chart the phase diagram the temperature of water can rise without the pressure rising if you allow it to be in it gass form.
Yeah, but if you raise the temperature without letting the pressure rise then you need to increase the volume. Do you have an oven that change size?

>Though if you just allowed it to pass thorough the a vessel then it doesnt change the pressure.
If you let the gas escape it also doesn't raise the temperature. The liquid water constantly evaporates into new steam that displaces some steam out of the chamber. Once the steam has escaped you can't continue heating it up.
Doris Nicklefield - Mon, 06 Jul 2020 16:44:56 EST ol3lKwZ/ No.904033 Reply
Yeah, steaming would work in theory, but not inside jars or bags which is what OP would use. You can't run steam inside the jars and so the grains would still reach only up to 100C.
Doris Nicklefield - Mon, 06 Jul 2020 16:49:43 EST ol3lKwZ/ No.904034 Reply
Boiling water in a pot is not the only way to produce and heat steam.

Ovens don't have to be hermetic and most aren't.

However in practical terms you are right, OP won't use steam to sterilize his shit. Chemical methods don't work as far as I know or they do work, but we haven't developed the tech yet or even if we have I bet it's a lot easier to acquire a PC.
Martin Sudgewane - Mon, 06 Jul 2020 16:54:38 EST 9JchIYMz No.904037 Reply
I'm not questioning that, I'm questioning how you're going to adapt an oven to superheat steam. Why not just get a pressure cooker?
Charles Murdcocke - Tue, 07 Jul 2020 16:50:00 EST 9JchIYMz No.904044 Reply
Maybe, but it's moot because you can't sterilize in a still. Water doesn't get hot enough during distillation, and anyway how are you going to sterilize a glass jar inside a thin copper tube?

Do you understand the difference between pasteurization and sterilization? They don't have different names by coincidence. 60° C is nowhere near hot enough to destroy endospores. If you pasteurize a jar of grains and them let them sit for two weeks, all you'll get is a jarful of bacteria and no fungus.
You need to either hit ~120° C, or do Tyndallization, which works by killing bacteria and letting endospores germinate through several cycles.

Whatever, if you want to waste time and money building a warm water bath for bacteria then go ahead, but I don't understand why you came here to ask questions, when it seems you already had all your answers.
Martin Fillersare - Tue, 14 Jul 2020 01:23:11 EST xOOWF2VW No.904090 Reply
So my white rice was fully colonized today, after 7 days.
I took my spawn and mixed it with 2/3 parts Coco coir that I extracted myself and cooked a little adding coffee powder.
I made a little bulk and added a gentle casing layer on the top. How long from now till I get the first tiny fruits?

Tomorrow I am birthing two other cakes and doing a pure casing instead, gonna see which one does it faster.
Priscilla Blondlehood - Tue, 14 Jul 2020 09:18:19 EST 0gO8aAgT No.904098 Reply
This is literally the first result on google when you type in "pasteurization vs. sterilization":
>Sterilization is a destruction of all microorganisms and their spores.
>Pasteurization is a process that kills the pathogenic bacteria by heating to a certain temperature for a set period of time.
>Sterilization kills pathogenic and saprophytic microorganisms, vegetative and spore forms, viruses. Pasteurization only destroys the vegetative forms of the bacteria.
>Sterilization can be physical (sterilization with heat, cold sterilization) or chemical (gas sterilization using chemical agents, cold chemical sterilization). Depending on the temperature and the time the pasteurization can be Vat (batch) pasteurization (63°C for 30 minutes), HTST (72°C for 15 seconds), HHST (89-100°C for 1.0 -0.01 seconds).

I didn't really mind looking it up myself, but I'll never understand why people don't google a question they have first and find the answers for themselves instead of asking others to (more often than not) google it for them and share the results. It literally took less than 30 seconds to type and find a satisfactory result that explained everything you wanted.
Ebenezer Commerstock - Tue, 14 Jul 2020 09:42:42 EST MU5DQUTc No.904100 Reply
>How long from now till I get the first tiny fruits?
Couple of weeks
Frederick Gallerville - Fri, 17 Jul 2020 15:26:40 EST xOOWF2VW No.904143 Reply
Okay, so my bulk casing layer is almost fully colonized by now, and yesterday I could already see some primordia forming, which is already bigger today. I think it should be pinning in 2-3 days now.
The whole proccess was extremely fast, I am very surprised. i think the temperature here being always 23-29C helped alot.

The casing one still has not colonized the casing layer yet, so i guess bulk is faster and will do that the coming times.

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