I have a similar quest, a decent quantity of premium Ephedra strain, very mature and rich in Ephedrine...
i've made many posts/documents in the past about this one. My recent attempt could be considered a
refined success....so here it is:
EPHEDRA SHRUB X-TRACTION /
CHEAP IN RESOURCES & HI YIELD
I have dried several varieties of Ephedra twigs at different stages of maturity.
I did this by placing them in cardboard boxes with silica gel packs
and allowing them to dry for a year.
During this time, I selected the most promising parts and cut
them with scissors into 1cm pieces. to ferment them further.
After trying out various blenders and coffee grinders,
finally acquired a high-quality multi-purpose kitchen grinder - 200W.
packed multiple loads of 40g at a time and ground them to a fine powder.
transferred the powder to a baking plate coated with Teflon.
After grinding approximately 300g of Ephedra,
placed the powder holding plate
on my laboratory hotplate and heated it to 150°C.
[ This process was similar to roasting coffee beans, but it required careful attention
to avoid burning the material. I constantly stirred the material with a spatula. ]
The result was a dry, yellow powdered substance.
i brought it over in to a 1L Beaker and covered it with WATER and 25% Acetic
Acid ( 500ml H2O + 100ml Acetic-Acid + 20ml EtOH+ 20ml 1-Propanol + 20ml IPA )
this was then stirred with a FAT egg-form Stirbar a few hours, without heating.
I added about 150-200 ml of non-polar hydrocarbons to the top of the mixture,
using a 1:1 mix of mineral turpentine and naphta.
This mixture was stirred for several hours to extract all the plant oil and chlorophyll.
Surprisingly, the non-polar phase separated well without any emulsions.
I separated it using syringes and pipettes.
The remaining mixture was stirred overnight, and at the end,
I let it stand still and took apart about 1/3 of the content, to process it .
Because, I was lucky and found some strainers and sieves
for free in a box on the sidewalk,
i am gifted in separating plants from liquid
with a smart and precise 3 step method....
One of the strainers was a steel net tea sieve, which allowed me to catch the larger particles.
I squeezed them out using a pestle from a mortar- while still in the sieve.
After that, I could use a very fine kitchen sieve with a rubber-like ultra-fine net,
again squeezing the remains. Finally, I forced my opaque, dark brown liquid solution
through a fine coffee filter.
Now I had a red or dark brown but clear solution with a pH of 4-5.
To this, I added 20 grams of fine active carbon and a
large amount of NaOH flakes. I oversaturated it heavily.
Then I used a mix of C8-C26 petroleum lamp oil, C7-C13 barbecue lighter fluid, and xylene,
adding approximately 200 ml in three portions (all this happened in a 1-liter beaker).
I stirred the mixture for a few minutes each time and collected the intense yellow-
coloured non-polar extractions in a 2-liter round-bottom flask (RBF).
To this ephedra alkaloid-base-containing hydrocarbon mix, I added about 120 ml of water.
While stirring, I added 15% HCl until the water layer became acidic (pH=4.5).
The phases separated. I vaped the aqueous layer down in a large pyrex dish,
blowing a fan over the surface area. At the end, there was a fine-quality crystalline mass left,
which I rinsed generously with dry acetone, using a technical grade.
THE YIELD WAS ~3g WHITE CRYSTALS derived from ca.
~100g of the former roasted powder, with water/Acid extraction.
The remaining portion of my acidic plant material solution was stored in a larger
container, which I occasionally shook.
This process is inexpensive and relatively effortless, I must emphasize
that I undertook this task as a side project, without any pressure.
As I write this, I am consuming the crystals,
which I have spiked with a small amount of meth.
I 've got pseudoephedrine for the purpose of synthezising Methamphetamine....
which is why decided to use the plant derived ephedrine as it is...
And boy, it is a truly satisfying substance on its own...