How to sterilize mushroom spawn bags in a 23q Presto

Подписаться 1,3 тыс.

Просмотров 2,9 тыс.

50% 1

Using 3t Unicorn bags, simply match the gussets and wrap the bag around itself with the filter facing outward. Stack in your Presto making sure to use the appropriate heat source for your pressure cooker.
If using an electric hot plate, make sure to purchase a unit with an Infinity switch and the appropriate wattage for the unit. If using gas, ensure that the BTU of your burner matches the manufacturer's recommendations for your pressure cooker, or you risk popping or melting your bags.
Each bag received 3 quarts of hydrated white millet, or roughly 4.5lbs.

Хобби

Опубликовано:

9 дек 2023

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 26

@Max-bh2rc 15 дней назад

Hey man, I appreciate all of your information and work. You do a really good job at explaining everything, thank you for that. I have a few questions that I hope you can answer. First, what is the dry weight of millet per bag before you hydrate them? Second, how many of your 5lbs sub bags are you able to inoculate with one of your grain bags? Third, would 14A .5 micron unicorn grow bags would work for this? Finally, I am using a gas stove. My PC is some brand that Canadian Tire carried a few years ago and is no longer available, i've had no issues with jars but do have some concerns that the hot metal could melt my bags. Would bringing the boil/heat up slower be the play here? This last one is a little vague, I may just have to mess around with it a few times but don't really want to dick around with a pressure cooker and stuff melting inside. Thanks again!

@StipeCap 14 дней назад

I wouldn't recommend . 5 for spawn but the bags should be fine if you keep the flame low.

@Max-bh2rc 8 дней назад

@@StipeCap Thanks for the reply man, are you able to chime in on the other questions?

@Rubo7 Месяц назад

Hey thank you for all the tips. I do have a question with the bags after they come out of sterilization. Do you seal the bags? Or just having them folded like that will keep them seal for a long period of time? I just want to sterilize more bags and put them on a shelf and have them ready whenever I need to. What do you recommend to do after pulling the bags out of sterilization if I'm not inoculating that day?

@StipeCap Месяц назад

You shouldn't let them sit long-term but the vacuum seal should hold, I've never run into problems with it.

@Rubo7 Месяц назад

@@StipeCap I've read online from north spore. They say if you keep them in a room at room temp in a place out of direct sunlight you can store them for up to 2 months. I just don't know if they seal the bags. That's my main question is sealing them with an impulse sealer or just folding them over is enough. 🤷‍♂️

@StipeCap Месяц назад

@Rubo7 North Spore spawn producers have more experience than the average home cultivator, spawn production is one of the most difficult aspects of mushroom cultivation. So, yes it's possible to store perfectly executed spawn, however, most fail to achieve this prerequisite to long-term storage. The vacuum seal integrity will depend on the vessel utilized to sterilize your spawn bags, some units pull a vacuum better than others, the situation will dictate.

@J155P 3 месяца назад

Do you sterilize substrate in your presto? If so, how many bags do you typically do?

@StipeCap 3 месяца назад

Yes, you can sterilize supplemented sawdust blocks in the same way you'd sterilize spawn.

@giovannipascal4404 2 месяца назад

I thought only 1 hr was needed to sterilize in a canner? Is 3 hrs the actual recommended time for sterilization?

@StipeCap 2 месяца назад

Yes, 3.5 hours is the recommended time to sterilize large bags of grain.

@MauweeWauwee 6 месяцев назад

Hello Stipe & Cap Mushroom CO. I have an autoclave which does not have function to let pressure out on 15 PSI. It shuts completely and keeps around 15 PSI at 75 Celsius. How long should I sterilise my rye grain under those conditions? Or would it be better to go for around 45 PSI and around 115 Celsius?

@StipeCap 6 месяцев назад

Are you sure your autoclave isn't capable of reaching 121°C at 15psi?

@MauweeWauwee 6 месяцев назад

@@StipeCap im sure. Trying otherwise I would be using it not following manual. I've tried with agar and worked good at around 100 celsius and 30 psi for 30 minutes.

@StipeCap 6 месяцев назад

Autoclaves are designed to run at specific temperatures that are directly correlated to pressure: 10psi = 115.5°C 15 psi = 121°C, 20psi = 126.11°C. Pressure is necessary to exceed the boiling temperature of water, it's the only reason why autoclaves/pressure cookers pressurize steam. What kind of autoclave do you own?

@MauweeWauwee 6 месяцев назад

@@StipeCap Uteho ЧЕ-8 electro It shuts solid not letting anything out and when it reaches 75°C it has around 15psi. Heating element shuts down automatically and it keeps that pressure way better then heat. As far as I understand Presto 23 is designed to spew some of that pressure out while being heated constantly.

@StipeCap 6 месяцев назад

I googled your unit, but I don't speak/read Russian, so I took a look at the valves on top of the lid. It appears as though you have on and off valves which would allow for steam to release from your cooker. Open whichever valve allows for steam evacuation, allow that valve to vent for the internal gases to be replaced by steam before closing the valve to build pressure for your cycle. If you don't purge the internal gas/replace it with steam, your unit will pressurize mixed gases resulting in lower temperatures.

@bradsmith3346 Месяц назад

Are you sterilizing for 3.5 hours, or how long do you run the cycle?

@StipeCap Месяц назад

I sterilize bags for 3.t-4 hours after purging the vessel.

@mushyynelvz2552 2 месяца назад

Hiya, fellow mycologist here, could you tell me how much those magnets weigh cumulatively, and the internal pressures being achieved ? I'm also using the same Presto 23qt cooker, My pressure gauge broke, but I know its still working because the pressure weight still wobbles and hisses rhythmically. Thanks !

@StipeCap 2 месяца назад

No idea but a replacement gauge is like 20-30$ on Amazon, get er done. My stack allows me to exceed 20psi in silence, if I want.