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tips for increasing yields?

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danknugz81

Rising Star
so this is a call to all the resident experts here - what are some tips/techniques you use to increase yields - specifically for STB teks? pulling with hot naphtha is one that comes to mind as well as leaving the naphtha with the soup for longer between pulls. xylene and toluene are known for bringing better yields, along with the red spice, but im talking specifically about naphtha pulls. any others come to mind?
 
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Crock-pots work best for hot water baths. They're also excellent for speedy partial evaps; I prefer to let the steam pass under the evap dish rather than bathing a container in the hot water, myself. You can usually find crock-pots for under twenty bucks, and it's really all you need for any sort of heat application involved in extraction.
 
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Keep cooking in the acid solution. I have done 5 cooks over a week and my last cook pulled out 500mgs off of 454grams. I think the 3 cooks for 3 hours is not sufficient.

Also using a warm base solution and warm naphtha/bestine seem to pull out a lot of oils. If you don't mind them or successfully get them out during rextalization that's cool, but I have found that doing it with room temp seems to really eliminate oils and rextalization with almost no oils can make some giant 1/2" crystals. It takes longer with more naphtha pulls, but after all is said and done it doesn't seem to reduce yields. At least this is what seems to work best for me.
 
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heating up the base mix along with the naphtha/toluene sounds like a plan, but the extraction in question is contained within a HDPE milk jug.. will this be fine to heat in a hot water bath?

my thing is i have some MHRB inner bark and my yields have been less than impressive. the lucky 11 scale i bought is basically worthless so im not sure of the weight, but 3 naphta pulls (2 normal, 1 hot) have yielded less than a gram..from 200g of inner root bark, ground in my blender. and this is before cleaning/re-x.. the vendor has a good rep, so im not sure if the bark is the issue or not. im just doing the noman tek straight up. i'm thinking i may just go for the toluene pull now just to see if i can pull some more out.
 
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Hot hot hot: I've freezer precipped material from hot naphtha extraction, there was base contam. so it needed redisolving and washing and I didn't have time so it sat for several days, over that time I vigorously shaked and stirred-cold- and at no point did that material show any interest in redisolving in the cold solvent.
 
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Max yeild means just get all the dmt out of the bark - this is a simple task if you first puleverize the bark and are patient.

Then there are the two choices - solubilize the dmt in acid until none remains, or make clathrates in an stb tek.

Remember clathrates ? - this is what an stb tek causes to form -

en.wikipedia.org

Clathrate compound - Wikipedia

en.wikipedia.org en.wikipedia.org


"It is possible to isolate not only chemically different species but also structural isomers, positional isomers (enantiomers and diastereomers), and radioactive isomers using clathrate compounds...."


Yay ! if this is true about stb teks, and I do believe it is, then there is a detailed chemical explanation for how an stb tek can actually get the dmt out, and delivered to a waiting NP-solvent layer ! But it is much more of a tight-rope act to follow - complicated and also dependant on the best temp, pH and 'foaminess' .. etc etc...


I think acid-solubilization is easiest - it ALL comes out of the MHRB into a dissolved state. In 2, 3 or 5 soaks, cooking it or not, you get all the dmt out if you just soak it enough in acid. Then you filter the acid water well, and getting high purity is easy. A pH of 2.0 is likely to work quicker than a pH of 4.0, but using a lower pH may improve yeild.

To nail an stb tek so that to give the maximum yeild you need to optimize conditions to make perfect "clathrates". I don't know the exact conditions, but you need to understand what promotes the best type of clathrate formation for delivering dmt to the NP-solvent. It is a balance of conditions to create the best micro-clumps of stuff that forms in that black goo of an unfiltered stb tek.

I agree with stirring a magnetic stirrer would be great, or a blender set on low, for an stb or an acid-soak. I always shake the living sheet out the acid-soaking jug - I make an excercise out of it ! That shaking and stirring plus the physical grinding make it easy to have the acid water find its way to the dmt and ... 'bling' - make it charged and soluble.
 
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Hah, and if you wanna be absolutely sure you get everything (though it will probably be completely unnecessary)

Do 3-5 acid soaks and get the spice out of that...and then take the remaining bark and do a STB on that!
This way there is no chance of going wrong..
 
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the A-B pulp-mill tek ! start with an acid solubilization of what is 'easiest' to get at, and then pulp-mill out the rest that's buried in the wood fibers.

but I wonder if we can ever figure out what temperature, Ph and viscosity are best for making dmt-clathrates - can we fine tune the stb-tek with this kind of detail in mind..?
 
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