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What to Use to Remove Dark Color from Ethanol Extract: CarbonX - ExtraktLAB
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What to Use to Remove Dark Color from Ethanol Extract: CarbonX

Is activated carbon dusting up your extraction facility and extract? CarbonX has the friability that keeps it on your hands and not on your lab!

Our previous blog article, “How to Remove Dark Color from Ethanol Extracts,” established these facts:

“If you extract plant material with warm ethanol, pigments and waxes will be co-extracted. These pigments typically taste bad and give a poor quality appearance to the oil. Rotovaps, or stills, are typically used to remove the ethanol but the pigments, waxes, and poor quality elements remain in the extract” (extraktLAB® 2017).

Effective Decolorization Using CabonX

In order to effectively remove the color caused by unwanted pigments and waxes many of our customers use activated carbon, which “is also very effective at removal of actives. So the yield suffers greatly. The yield is low for a couple of reasons: first, the large pore diameter distribution and particle friability…” (extraktLAB® 2017).

As we learned in the previous blog article, activated carbon is derived from “coconut shells or bitumen or wood,” all of which have a high ash content and contain heavy metals:

“When the carbon breaks up under use, these metals distribute throughout the oil as very small particles. They become very hard if not impossible to remove via filtration. Thus, they end up in your extracts” (extraktLAB® 2017).

CarbonX is not a natural product as it’s engineered by “vapor depositing carbon onto a porous substrate.” This substrate will not break up, so ash content (that sooty mess) is not as likely.

CarbonX can be used to remove dark colors from ethanol extracts in a couple of different ways:

“You can use CarbonX as a filter cake in conjunction with a DrainDroyd. You can use CarbonX dispersively by pouring it in, mixing, and then waiting for results. Then a DrainDroyd is used to filter the CarbonX out of the extract” (extraktLAB® 2017).

Here’s a mini demonstration of CarbonX removing unwanted pigments from an ethanol extract:

If you’re using activated carbon then you should give the reusable alternative, CarbonX, a try! Call us at: 651-600-0036; mention this blog post for a discount! Be sure to like, follow us on Instagram!