Supercritical CO2 Extraction
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- Опубликовано: 3 окт 2024
- Supercritical fluid extraction proposed in recent years, appears to be a promising technique since it requires low energy for separation. It is a relatively new technique for extracting fragrant compounds from a raw material, which often employs Supercritical CO2. Due to the low heat of process and the relatively nonreactive solvent used in the extraction, the fragrant compounds derived often closely resemble the original odor of the raw material.
Essential oils have traditionally been derived using either steam or hydro distillation, or extracted using chemical solvents such as hexane, heptane or ethanol. The supercritical CO2 extract and its process have many benefits over the traditional distillation processes, which should be taken into consideration when choosing a natural aromatic oil for use in body care products, aromatherapeutic blends, natural perfumes or similar products.
The CO2 extraction process consists of pumping pressurized carbon dioxide into a chamber filled with plant matter. When carbon dioxide is subjected to pressure it becomes "supercritical" and has liquid properties while remaining in a gaseous state. Because of the liquid properties of the gas, the CO2 functions as a solvent, pulling the oils and other substances such as pigment and resin from the plant matter. Thus, the difference between CO2, or supercritical, extraction and traditional distillation is that CO2 is used as a solvent instead of heated water or steam. The temperature involved in the supercritical extraction process is around 35C to 38C -as opposed to 60C to 100C in steam distillation. An important difference between CO2 extracts and distilled essential oils is that CO2 extracts typically contain more constituents found in the plant than just the essential oil portion. In this way they more closely resemble the original plants chemical make up, and could be considered to contain a fuller spectrum of constituents from the plant than essential oils do. There are a few more positive aspects of the supercritical CO2 extraction process and the resultant supercritical CO2 extract over some aromatic extracts such as absolutes.
The CO2 supercritical extraction process eliminates the need for potentially harmful solvents like hexane that is often used in the manufacture of absolute oils, avoiding unnecessary environmental pollution and potential human bodily harm. Another positive aspect to the CO2 distillation process is the aroma of the extract. A CO2 supercritical extract often will exhibit a more genuine aroma of the actual herb, spice or plant than a distilled essential oil. The aroma of the CO2 extracts of ginger, cardamom and other spices, for instance, are more alive, active, spirited than the aroma of the same plants that have been steam distilled.
Besides being the method of choice for applications designed to extract flavors and aromas, Supercritical CO2 extraction is also gaining momentum in the high-growth sector of plant substances (nutraceuticals, botanicals, food supplements). Here, requirements for naturalness and purity are very high and conventional methods simply aren't up to the challenge.
The video above is a promotional video from Evonik Industries and shows us how this extraction technique is used to produce decaffeinated tea. In this spesific process, the activated carbon absorbs 90 % of the tea's caffeine,which originally makes up 3 % of the entire content. This absorbed substance is regenerated and recycled into the production process while the bulk that is left over is the decaffeinated tea.
For more information about everything related to the sense of smell, please visit / vedatozankoku .
Source: The information above is quoted from the websites of Evonik Industries, Eden Botanicals, University of Illinois at Chicago, Ankara University and Wikipedia.
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though HPLC is at a high pressure, it actually means high performance liquid chromatography
Nice plant from former Schöller Bleckmann in Austria. Now it is Natex Prozesstechnologie
Thank you so much for sharing this vid.
What do you do with the Caffeine which you extracted from the Tea?
" In this specific process, the activated carbon absorbs 90 % of the tea's caffeine,which originally makes up 3 % of the entire content. This absorbed substance is regenerated and recycled into the production process while the bulk that is left over is the decaffeinated tea. "
Great video, minus when you just drop "activated charcoal" out of nowhere.. I would love to hear how this method is applied and how the charcoal is removed from the tea if it is mixed in?
" In this specific process, the activated carbon absorbs 90 % of the tea's caffeine,which originally makes up 3 % of the entire content. This absorbed substance is regenerated and recycled into the production process while the bulk that is left over is the decaffeinated tea. "
Is it the safe / healthy option , coffee/tea which is treated with carbon dioxide to extract caffeine from it ,doesnt seem that healthy or organic.
I need this for Cannabanoid extraction.
the 8% kats from evo are awsome to get good results ...
Who build this equipment?? I work for on one bigger citrus farm and we are looking for an apparatus like this
Way to go!
@moniker127 - What part don't you understand? Maybe if I used "wrong" instead of "sick" would that be clear? I think I explained it quite well....
Where can I find a company in Victoria Australia that will extract oil from rosehips for me?
@moniker127 - you know what don't worry about it....
I can help you out with that. I work for a company that makes extractors specifically for Cannabis.
Anyone know what the activated charcoal is for? I know its used in air filters. Is it used to filter the co2?
The activated charcoal is, most likely, used to separate the tea cartridges while still allowing the super critical CO2 to flow throughout the stack. So YES, it appears the charcoal filters the tea. The caffeine is solvated by the SC CO2, is transported away from the tea stack, then the solution is decompressed and caffeine is collected and CO2 recycled. Huge scale!
" In this spesific process, the activated carbon absorbs 90 % of the tea's caffeine,which originally makes up 3 % of the entire content. This absorbed substance is regenerated and recycled into the production process while the bulk that is left over is the decaffeinated tea."
@@LammySammy So the carbon is for capturing the caffeine for future extraction from the carbon? And then they add some caffeine back in for caffeinated tea? Crazy that it's up to 3%
@@LammySammy I don't understand what you mean by "This absorbed substance is regenerated and recycled into the production process." Is this a chat bot answer? Im mostly wondering why use the carbon at all? It doesn't seem necessary to remove the caffeine from the tea as this is done by the co2.Right? Even the caffeine I would think could be captured without carbon or maybe i'm missing something.
Check it out, EdenLabs.org. We just released a new Coldfinger unit that is modestly priced, however it's not displayed on the website yet.
If your name is Tripp, well - you have one now. 8^)
Sure, We make smaller extractors than the one above, but still using super critical CO2. Take a look at our website Edenlabs.org
Not in the slightest:). Some people dont like caffeine in coffee, some like it, so they have normal coffee, and energy drinks which it would be extracted into for peeps who like a slight up buzz. Whats unusual, or wasteful about that. Look at other areas of industry if you really want to be sick!!
I didn't know safety glasses were required to taste test tea.
Oh those wacky Germans...
heckler73 safety glasses are required in the lab. Has as both safety and legal reasons.
You are rarely work alone and what happens when the guy besides you screws up? Thats the idea
explain