Hello there
I just wondered if it is possible to vacuum dry trichome sieved off from undried fresh frozen in a vacuum oven at resin melting temps instead of freeze drying.
Whould the terp profile be similar?
Couls be pressed to rosin?
Absolutely possible, not clear why you would want to.
Terp profile would definitely suffer.
Sure, you coukd absolutely squish the results, but imo you would get better results if you left the heater off in your oven.
What temperature are you thinking?
Care to elaborate on why?
How are you planning to keep the water out of your vacuum pump?!?
Edit: survey says freezing your trichs, and precooling your vac oven are likely required.
See eg: Freeze Dryer Vs. Vacuum oven for drying ice water hash?
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You might also find Frost bitten, ice encapsulated resin glands: rotovap lyophilization informative
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I just wondered because a vacuum oven is so much cheaper than a freeze dryer.
Maybe vacuum drying it above freezing temperatures or without cooling it (but not not heating it) works to prevent the loss at high temperatures or over long drying times.
I am not shure.
Vacuum ovens need traps anyways dont they?
I trust you when you say the terps would suffer but I don’t believe they get damaged by heat at temperatures well below the melting temperature of the heads like 100 F.
That doesn’t explain why you want to perform this
Nor what temp you had in mind.
100F doesn’t sound at all like “resin melting temp”.
It’s not about “damaging” them, it’s about removing them via vacuum, after heating things up to make that easier…
Depends on use and type of pump…if you’re not removing water, there’s no need to protect your pump from it (can you define the temp at which butane will condense in a cold trap at 1000umHg?)
Don’t. Do you have a vac oven? Try it…
Or at least read of the documented attempt with no added heat linked above.
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I did not write I would perform that.
I was just figuring out a hypothetical route just like in the other thread.
I get the point. They would codistill to a considerable amount and be lost to the collected aqueous phase.
Thank you
Wrap your head around the Labonco freeze dryer.
Vac pump, cold trap, vacuum manifold.
Eg: https://m.youtube.com/watch?v=9ONdVJJxPwk
Imagine replacing that manifold with the best value VAX vacuum chamber. I’ll ask you again. Do you have a vacuum oven or a cold trap or are you planning on purchasing the wrong tools for the job?
No I am not planning now. Dont worry
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I also suspect that your proposed starting material is gonna be full of small pieces of “leaf“ which is not a great starting point
No need to suspect.
I am located in germany.
No proposed materials available at scale.
You really don’t need to worry to much. I am a theorist. At work I follow routines.
Theoretically; why does the labonco have no heating or cooling on the sample containers?
Evaporation consumes heat of the sample, container and surrounding in the case you mention.
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A deep vacuum keeps the sample frozen by evaporation cooling until the sample is dries out while the container equillibrates with surrounding.
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For sublimation the heat capacity of an oven would be a problem then.
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Exactly!!
More so with your (hypothetical) use case than say fresh frozen whole plant…simply because of the (lower) water content.
I just could not believe relative volatility of water to terps is so bad above freezing point that sublimation would be necessary as the vapor pressure of ice drops so sharp with decreasing temperature.
Is there any info on how or why this linked experiment was a mess?
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No, and the OP hasn’t been seen in a bit…