dry ice process from acapaluco gold

[apartmentblower]

im new to harvesting and processing

in the movie "acapaluco gold" they use dry ice to dry and improve their pot? they put it in a paper bag with dry ice then close paper bag and surround it with regular ice. is this correct? they wait 24hrs and supposedly it strengthens the grass.

do people still do this??

 

[outsidegrower]

old stoners tale.

 

[Jnugg]

Yeah man it works and a blacklight is the best light to use for growing some dope ass dope.....





Nah just yankin ya chain dude.....sounds like a cool movie although I don't think dry ice is going to make your weed magicly stronger or taste better.

 

[indifferent]

I hasten to add, those idiots in that movie didn't have any pot, they only had fan leaves picked off feral wild hemp, it wouldn't have got you high, the plants when they picked em weren't even into flowering and they were only collecting the fan leaves.

Amazing to see how ignorant a lot of people were back in the 70s about what weed really was.

 

[SouthernGuerila]

dry ice is frozen co2
removing oxygen from whatever container(jar) you stored your pot in might help maintain potency.

 

[Owl Mirror]

I agree with the statement by Southern Guerila
I don't know about regular ice doing anything but making the trichs drop off the buds due to the cold.

I invented a curing box that utilizes Dry Ice.
Basically a cabinet that you either hang dry or place on screens your harvested buds
The roof has a hole cut away with a screen. You place a chunk of dry ice from above in to the hole and when it melts at room temperature, the CO2 gas drops down through the screen because it is heavier than air. This CO2 displaced the oxygen from the cabinet.

Then again, I could be wrong

 

[kodman111]

I have heard of this method, but have never heard/seen any better results. I take my weed as I get it. But hell dry ice sure is fun to play with, and to throw at people.

 

[pip313]

Dry ice will dry your weed. It has to do with vapor pressure causing azeotropic distillation and some other "advanced" theories. The regular ice might serve to keep the dry ice from subliming too soon.

just my opinion

 

[toastyspade420]

never heard of it drying weed before,i do know if i had a lb of mexican brick weed that was super dry and i put a nice chunk of dry ice on the lb it would moisten it up the gases that fall from dry ice create moisture as its -130 degrees

 

[foo_bird]

we did this in the 70's the thought was the cold cracked the cells releasing more thc
it worked kinda the pot seemed alittle better but in a few days it was back to what it
was or worst

 

[Mt Toaker]

I have heard of people using dry ice only to keep the buds in an oxygen free environment. THC does breakdown in open air and the dry ice evaporates straight to CO2 giving the buds the opportunity not to allow any of the chemicals to oxidize.

 

[Chamba]

It's not an old stoner's tale, I've done it and it does "work".

Dry ice used to dry fresh plant material in early flowering will noticeably increase the potency compared to drying the same material in the regular way. Place fresh or half dried plant material in a container with the block of dry ice, close the lid leaving it slightly ajar and put the container in the freezer for a day or two. A block of dry ice the size of 3 or so cigarette packets in a container the size half a shoe box works. I've done this several times last century when storms broke off a branch or two and I had no bud. It won't win any awards and the high is short lived, but when you nothing in the stash box, a broken plant and access to cheap dry ice, try it as it's better than nothing (but it's a long way from the high you would get from cured, well matured bud from the same tree)

mature buds dried this way do not become stronger, it only seems to work with plants that are in late veg or early flowering...why? I don't know, but the high is definitely stronger than simply drying the same branch in the standard way and from memory, the high itself is different too, as it's sort of fuzzy and heady. Also, as FOO_bird mentioned the "potency" wears off in a day or two, why? I don't know either.

 

[dubite]

Stoners tale.

 

[Chamba]

dubite....is this a personal observation based on actually doing it yourself....or just something you heard somewhere?

try this ..break off two branches off the same tree @ week 4 of flowering, dry one branch by placing it on a warm surface so it dries in 3 or 4 days and dry the other for a day on the same warm surface then use the dry ice method I mentioned above...get a friend with a low THC tolerance to test a joint of each (but make sure the test is done less than 12 hours after the dry ice branch has been "freeze dried") then come back and tell us if it works or not.

 

[zenoonez]

I agree with the statement by Southern Guerila
I don't know about regular ice doing anything but making the trichs drop off the buds due to the cold.

I invented a curing box that utilizes Dry Ice.
Basically a cabinet that you either hang dry or place on screens your harvested buds
The roof has a hole cut away with a screen. You place a chunk of dry ice from above in to the hole and when it melts at room temperature, the CO2 gas drops down through the screen because it is heavier than air. This CO2 displaced the oxygen from the cabinet.

Then again, I could be wrong

Does the the cab have a second hole for exhaust? I mean if you are forcing air in one way through the sublimation of the co2 and you want it to displace the oxygen why would you want the oxygen to be forcing against the co2 coming down, updraft could dissipate the falling co2 and make the system less efficient at displacing the o2. Just some thoughts, ideas.

 

[CandyColas]

It's not an old stoner's tale, I've done it and it does "work".

Dry ice used to dry fresh plant material in early flowering will noticeably increase the potency compared to drying the same material in the regular way. Place fresh or half dried plant material in a container with the block of dry ice, close the lid leaving it slightly ajar and put the container in the freezer for a day or two. A block of dry ice the size of 3 or so cigarette packets in a container the size half a shoe box works. I've done this several times last century when storms broke off a branch or two and I had no bud. It won't win any awards and the high is short lived, but when you nothing in the stash box, a broken plant and access to cheap dry ice, try it as it's better than nothing (but it's a long way from the high you would get from cured, well matured bud from the same tree)

mature buds dried this way do not become stronger, it only seems to work with plants that are in late veg or early flowering...why? I don't know, but the high is definitely stronger than simply drying the same branch in the standard way and from memory, the high itself is different too, as it's sort of fuzzy and heady. Also, as FOO_bird mentioned the "potency" wears off in a day or two, why? I don't know either.

It definately isn't a stoner tale. Take a look in the Grower's Bible, Jorge Cervantes' Marijuana Horticulture book on page 92. I'm sure many of you have it. There is quite a large section on it.

What is the "Dry Ice Cure" (Freeze drying )?

What is Dry Ice?
"Dry Ice" is frozen Carbon Dioxide. CO2 will change from its solid, frozen state to its gaseous state without passing through a liquid state - hence it’s name ‘dry ice’. This process of solid changing to gas is known as sublimation.

What is Sublimation?
Sublimation is a simple process which depends on the fact that the surface of a frozen solid is actually quite active at the molecular level. In the case of water ice, water molecules are constantly leaving and binding to the frozen surface. In a moist atmosphere, more water molecules bind to the surface than leave, and ice grows on the surface (e.g frost inside your freezer). In a dry atmosphere however, more water molecules leave the frozen surface than adhere, so the solid dries out.
The same process occurs with Dry Ice. As there is a fairly low CO2 content in air, the dry ice sublimes away completely, leaving no residue or liquid - hence its name.

What is Freeze Drying?
Freeze drying (scientific name: Lyophilization) depends upon the process of sublimation (explained below), and on the fact that like CO2, frozen water at low temperature will go through the process of sublimation under the right conditions.
Dry ice has a very low water content, as it is made up of almost pure CO2. In theory it IS pure, but even from a lab suppliers, it will have a small amount of impurities - these do not matter for our purposes. In effect the dry ice vapour has near zero relative humidity.

Now: (this is the important bit)
When material containing water is placed into this almost zero humidity environment, the water molecules are drawn out of the material and into the CO2, raising the relative humidity of the CO2 and lowering the water content of the material. If the CO2 around the material is steadily replenished then the process will continue until all moisture has been removed from the material. All this happens at low temperatures, below the freezing point of water, which means that the material is preserved in a totally ‘fresh’ state.

How Do I Freeze Dry Grass?
Use a container (I use a Tupperware box) that is twice as big as the volume of grass you wish to dry. Make a few small holes in the lid, to allow the gas to escape.
Put equal volumes of bud and dry ice inside, loosely packed, with the dry ice underneath the bud. Put the lid on and make sure it is properly sealed so that the only way for gas to escape is through the holes in the lid. Put the box into a freezer, lid upwards. This is to keep the material as cold as possible, prolonging the sublimation process for as long as possible. The dry ice will begin to sublime pushing all air out of the box and surrounding your buds with bone dry co2. The totally dry atmosphere will begin drawing water molecules out of the plant material.
Check the tub after 24 hours and then every 24 hours until the dry ice has all gone. When the ice is all gone -the buds should be completely dry and smokeable. If you find that they are not quite dry then put some more dry ice into the box, place the lot back in the freezer and wait until they are done.

Can I use a fridge?
You could use a fridge instead of a freezer, but the dry ice would evaporate very quickly so you'd need a lot more of it to dry the buds, hence the expense would rise rapidly. Better would be to use a ‘cool box’ - one of the plastic insulated boxes for food storage when camping. Again - make sure that there are holes so that the gas can escape.

Do I need to prepare the buds?
It's better to partially dry the buds so that they are nearly dry, then finish them off with dry ice. If you use fresh, wet grass then you can expect the process to take much longer and to use more dry ice, pushing the cost up. I find that using partially dry buds in a freezer the dry ice has gone after about 48 hrs.
What I do is give them a week of slow dry, then manicure, THEN freeze dry them.

What are the advantages?
The advantages of this method are increased potency and a 'fresher' taste.
As the material is preserved in a totally ‘fresh’ state, the THC glands suffer as little degredation from heat, light and air as is possible. No other drying process preserves the resin glands is such a fresh state as can be achieved with freeze drying.

Why should I freeze dry?
Freeze drying is good if you plan to freeze your bud anyway. If you don't want to keep it in the freezer then there isn't a lot to be gained by using the technique, as the 'fresh' thc will rapidly degrade as usual once outside the freezer.

Where Can I get Dry Ice?
You can get dry ice from most lab suppliers (expensive) but many industrial ice houses or ice cream suppliers sell it for considerably less (preferred option)
Just try the yellow pages.

My Opinion Based on Experience
To be honest, In my experience the dry ice cure is a lot of trouble for little benefit, as the final taste isn't as good as you can get by slow drying and glass jar curing. Generally it's greener tasting and somewhat 'minty' due to the remaining chlorophyll. Strangely enough, some people like this minty taste and associate it with strength. (weird, I know - but they do.)

Does it really increase potency?
I have tried comparison by using a control sample, and freeze drying definitely seems to give you a slightly ‘higher’ hit with a ‘mintier’ taste than the jar cure, but the overall strength didn't seem hugely different. It's a connoisseur smoke, perhaps. In a blind test at a party with about thirty people involved it came out about evenly split as to which was the strongest, but that was a subjective test, and was only conducted in a very stoned manner! According to The Frank & Rosenthal Guide, anecdotal evidence suggests that freezing improves potency, which is why I got into the process in the first place. I'm not convinced either way, but it was a fun technique to play with for a while.
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I've never tried this but I'm curious if it works. I might try in on a small batch of my next harvest. I'm chopping tomorrow so we'll see.