Question
Asked 16th Aug, 2018

Is soxhlet extraction a reliable way of getting pure THC from cannabis plant?

I have been having isssues getting pure THC form the USA and it seems the price from sigma is exhorbitant. I want to get the plant and extract THC. i was told by someone that soxhlet extraction will work, i am not very sure. Will it give similar outcome with high performance liquid chromatography
?

Most recent answer

28th Feb, 2019
Thorge Debus
University of Hamburg
I have not used Centrifugal partition chromatography, so I can´t say anything more than what you find on the web in terms of pro´s and con´s.

All Answers (13)

17th Aug, 2018
Chukwuebuka Egbuna
Chukwuemeka Odumegwu Ojukwu University
Certainly not if you care about the purity. After extraction, you will need to purify further.
18th Aug, 2018
Olusegun Abayomi Olalere
Universiti Sains Malaysia
Soxhlet is not reliable
19th Aug, 2018
Innocent Abi
Benue State University, Makurdi
So in place like Nigeria what exactly is the prefered method of extraction?
1 Recommendation
20th Aug, 2018
Rollando Rollando
Ma Chung University
Soxhlet is just an extraction method. If you want to get THC, the choice of extraction solvent is very important. THC is a semipolar compound, semipolar compounds are easier to extract using ethyl acetate or diethyl ether. An effective instrument for extraction using Speed Extractor from Buchi.
20th Aug, 2018
Innocent Abi
Benue State University, Makurdi
Ok thanks all
26th Dec, 2018
Thorge Debus
University of Hamburg
There are different ways to obtain THC from plant material. If your equipment is limited i would suggest the following:
  1. Winterization to remove plant waxes and lipids
  • weighing the plant material
  • grinding the plant material
  • adding ethanol (10x the plant material weight) / other solvents are also possible
  • freezing the solution in a freezer (the colder the better, but not less than -50C) and shaking every couple of hours / you can use dry ice as well
  • after 24-48 hours the waxes and lipids are frozen and can be removed by filtration (vacuum assisted filtration works best)
  • the winterization can be repeated to improve the purity
This Buket TEK also looks very promising (Winterization TEK with detailed description)
Now you have a plant extract containing Flavinoids, Terpenes and Cannabinoids
2. Further Purification
You can now use different kinds of Chromatography or Destillation to obtain pure THC depending on your Equipment
Also have a look at THCa Crystallization TEKs, this may be an option as well
15th Feb, 2019
Andres Turizo
National University of Colombia
Hello
Centrifugal partition chromatography and molecular distillation.
what is the most efficient way and what do you think are the advantages or disadvantages of each of these isolation methods?
23rd Feb, 2019
Thorge Debus
University of Hamburg
Andres Turizo Are you thinking in terms of scale-up?
26th Feb, 2019
Andres Turizo
National University of Colombia
yes, i do
Can you help by adding an answer?

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