Boswellic acids

Boswellia Sacra/Carterii resin extract beneath B. Papyrifera resin extrac

Extracting the resin and Boswellic acids from Frankincense. A visual walkthrough.

 

Many of you have asked for clearer instructions on the method I use for separating the resin with its Boswellic acids from Frankincense in the post “Tapping into Frankincense and its Boswellic acids. An easy extraction method”.  I realize written descriptions leave a lot of room for interpretation and a video would be the best method of demonstration.

Since shooting some videos is still on my todo list, here is a photo progression of the process.  I hope it offers the needed clarity until I get around to making a video.

I also want to add here, though I name it “An easy extraction method”, easy is relative. It is also a messy and time consuming process. Be prepared to dedicate sieves, pots, pans and wooden spoons to Frankincense before you start, since cleanup is inevitable.

Gird yourself with the knowledge that metal scouring pads and Olive oil followed by warm soap and water will eventually remove both sticky and brittle resins from most kitchen utensils and appliances. (And floors). Is it worth all the work?  You betcha! You will be able to make beautiful and efficacious oils, salves and cremes for medicinal and cosmetic applications. Products that deliver the full range of therapeutic compounds found in Frankincense including AKBA and the rest of the Boswellic acids. Products that deliver much more than the essential oil of Frankincense.

I am sure there will be more questions, so feel free to leave them in the comments section below. Questions are good.

Please note, this product is not meant to be taken internally. When I feel the need to take Frankincense internally, I take 1/2 to 1 level teaspoon 2-5 times a day of powdered fresh, whole Frankincense chased with water. Powdered Frankincense in gel-caps serves a similar purpose. remember everyone is different, what works for me might not work as well for you. If you want to try this, start small and listen to your body. This is a good opportunity to mention that the essential oil of Frankincense contains little to no Boswellic acids and is not suited for internal consumption.

Here is a post showing you how to powder Frankincense-https://apothecarysgarden.com/2013/03/22/how-to-grind-frankincense-myrrh-and-other-oleo-resins/.

Making a resin extract of Frankincense with Boswellic acids

 

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Colander or sieve partially immersed in the water. The boiling water will dissolve the water-soluble gum and melt the resin from the bottom up. The gum will disperse in the water making it cloudy and the resin will float and pool on the water.

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Whole resin chunks of Boswellia Serrata in the sieve. No need to grind the resin or prep it in any way. The resin portion of Boswellia Serrata, B. carterii, B. Sacra and B. Papyrifera is mostly  Boswellic acids. As many of you know, Boswellic acids have proven to be anti-inflammatory and anti-cancer in laboratory studies and are likely the main compounds that led to Frankincense’s long traditional use as medicine. There are no Boswellic acids in the essential oil of frankincense.

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Mid process, resin is floating on the water, Gum is clouding it and the fresh resin is on its way through the sieve.

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Stirring and pressing with a wooden spoon helps move the melted resin through the sieve.

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After processing, the debris in this case is mostly bark which I like to use as an incense material. Fresh Frankincense Serrata on the lower right.

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Resin frothing and floating on the boiling water.

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Set outside to cool, the resin begins to harden.

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The morning after, the resin has hardened. Some has fallen to the bottom since its specific gravity is close to that of water. It will sink in cold water and float in hot water.

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Running it through the oven at 220 degrees C. This releases and evaporates any water that is trapped in the resin as it cooled. Though the moisture will not interfere with the making of oils, salves and cremes, I prefer to remove as much of it as I can before storing it.

 

Raw Frankincense and Resin extract of Frankincense Sacra-Both heated

Raw Frankincense on the left and Resin extract of Frankincense Sacra-Both heated to the same temperature. The lack of water-soluble gum in the extract means it will melt with heat and dissolve easily in warm oils and alcohol, while the raw resin will not.

 

Boswellia Sacra/Carterii resin extract beneath B. Papyrifera resin extrac

Solid at room temperature, the resin portions of Boswellia Thurifera beneath B. Papyrifera. Each species of Frankincense will yield a resin extract of different colour. Even variations in place  or time of harvest can influence the colour of the finished product. 

 

Frankincense tree in the wild

Tapping into Frankincense and its Boswellic acids- an easy extraction method

How to isolate the resin and Boswellic acids from select Frankincense oleoresins with water

Boswellia Papyrifera-Pure Resin-Medicine, Perfume & Incense.

Boswellia Papyrifera-Isolated Resin-Boswellic acids-

Lately, we have been hearing a lot about the anti-inflammatory and anti-cancer compounds found in the frankincense family. The most publicized recently are the Boswellic acids and AKBA, or acetyl-keto-beta-boswellic acid,  pentacyclic triterpenes found in some species of Frankincense which make up a significant part of the resin in these oleo-gum-resins. The motivation for the increase in research, and much of the funding, from what I can see, is largely due the projected profit perceived by pharmaceutical companies. This isn’t necessarily a bad thing, since it provides the impetus for discovery, progress and knowledge, but good to keep in mind nonetheless.

With a rapidly growing aging population in the west, an increase in chronic inflammatory diseases such as arthritis, rheumatism, inflammatory bowel disease, and various cancers, the market is receptive. There are theories that most if not all age-related degenerative conditions are directly associated with inflammation. Frankincense’s history of use in traditional eastern medical systems as an anti-inflammatory makes it an excellent candidate for modern applications..

Frankincense tree in the wild

Frankincense Sacra/Carterii tree in the wild

Besides hearing about Boswellic acids in groundbreaking studies, some essential oil companies advertise that their distilled essential oils of Frankincense contain a high percent of Boswellic acids. This is misleading. Some essential oils of Frankincense may have a higher percent of Boswellic acids than other essential oils of Frankincense, but the Boswellic acids are not found in the essential oils except in trace amounts. They are found in the heavy resin portion and cannot be distilled into the essential oils except in minute quantities. Like politics, statistics in advertising can be misleading.

The Boswellic acids are heavy molecules called triterpenes, and while many beneficial compounds are light enough to separate themselves from the frankincense oleo-gum-resin when heated during the distillation process, the Boswellic acids are not. They make up the heavier resin portion. This is not to say that the essential oil of Frankincense is not a wonderful therapeutic oil with many valuable compounds and health benefits, but that when it comes to Boswellic acid content, it can only have trace amounts unless Boswellic acids were added to it manually and then it would no longer be an essential oil, but an oleoresin..

Boswellia Sacra/Carterii resin extract beneath B. Papyrifera resin extrac

Made up mainly of Boswellic acids, and solid at room temperature, the  pure resins of Boswellia Sacra/Carterii beneath B. Papyrifera do not distill over with the essential oils.

The only products that can claim with verity to contain significant amounts of Boswellic acids are either the whole raw oleo-gum-resin of certain Frankincense types, or extracts that have been processed with solvents to isolate the resins that contain the Boswellic acids.  Boswellic acids are not found in the water-soluble gum portion of Frankincense or the distilled essential oils except as mentioned, in trace amounts.

Claims that the essential oil of Frankincense from any company, contains a high percent of Boswellic acids, that you should ingest their essential oils, or that their oils are “Therapeutic quality”, were developed to market their products and are not put forth in the interest of your edification or wellbeing.

Simply put-

  • There is no significant amount of Boswellic acids in any Frankincense essential oil when compared to the quantities naturally present in the unprocessed oleo-gum-resin, the pure resin or the extract.
  • You should never ingest essential oils without consulting with a qualified healthcare professional.

We have come to associate the essential oil of any given plant as the quintessence of its healing properties. While this may be true for some plants, it is far from the truth for oleoresins which hold many healing compounds in their undistillable resin portion.

If you would like to extract or isolate the Boswellic acids and the resin portion of Frankincense yourself, there is a simple way you can do this with the right type of Frankincense. Once you have the pure resin it is relatively easy to make a variety of products that utilize and deliver the Boswellic acids. The whole oleo gum resin of Frankincense will not dissolve easily in oil based products due to its water soluble gum content. It will also not dissolve well in water based products due to its oleo and resin components. The solution is to separate the water soluble part from the oil soluble part which is the point of this post and the following method.

Boswellia separated into 3 components

Frankincense Papyrifera gum dissolved in water on the right, resin in alcohol on the left ,and distilled essential oils center. Not in their naturally occurring proportions

Recent research has identified Boswellic acids in the resin of 3 types of Frankincense. The number may increase as more research is done on other species. ( See pages 125-127) http://scidok.sulb.uni-saarland.de/volltexte/2012/4999/pdf/Dissertation_Fertig_211112.pdf

They are-

  • Boswellia Papyrifera from Ethiopia, Eritrea, Kenya and Sudan.
  • Boswellia Seratta from India.
  • Boswellia Sacra/Carterii, (one and the same tree), from Somalia, Kenya, Oman and Yemen.
A visual comparison of 5 types of Frankincense-Boswellia- Papyrifera, Neglecta, Frereana, Rivae, Carterii/Sacra Apothecarysgarden.com

A visual comparison of 5 types of Frankincense-Boswellia

 A simple and safe method to isolate the resin and Boswellic acids in Frankincense

While different solvents can be used to isolate the resin and Boswellic acid portion of Frankincense, The simplest and safest method is to do so is with water.

 30/November/2015-Since writing this post, I have developed an easier/better method for separating the resin portion and the Boswellic acids from the whole oleo gum resin. If you are revisiting this page, I hope you find the following process simpler and more satisfying.

  • Take 100-500 grams of fresh Frankincense.
  •  In a stainless steel, Teflon coated or glass pot, bring at least 10 liters of water to a boil. More than this is just fine.
  • Place a stainless steel sieve or colander with a fine mesh about 1/2 submerged in the water. Ideally, use a sieve that will rest on the edge of the pot securely, otherwise you will have to hold it at the right height through the process and you will need an extra hand.
  • When it is at a full boil, gently add 100 to 500 grams of one of the 3 aforementioned types of Frankincense into the suspended sieve, careful to not splash boiling water on yourself. It is fine if the resin sits partially above the water, it will soon settle.
  •  With a wooden spoon or some other utensil, gently run the submerged resin granules back and forth through the boiling water allowing the water to wash over them all and dissolve them.
  • The water soluble gum will dissolve and disperse in the water while the pure oleoresin, the resin with the essential oils, will exit and float around the outside of the sieve. The bark and other foreign matter will collect in the sieve and not pass to the water.
  • Once most of the resin is floating on the surface of the water, it will also push its way back into the sieve. To address this, lift the sieve higher and allow the rest of the resin to exit the sieve. At this point you may need help running the utensil back and forth gently forcing the resin through into the water.
  •  When the sieve is empty of gum and water, set it aside.
  • Skim/scoop out all the resin that is floating in the pot into a separate preferably stainless steel bowl. I use a small colander/sieve that captures more resin than water for this purpose. It’s ok if you transfer water into the bowl with the resin since you can easily pour it off after the resin sets.
  •  Set the pot of hot water aside to cool. As most of these oleoresins do, they will mostly settle to the bottom of the pot as the temperature drops.
  •  When the pot has cooled, pour the contents through yet another fine mesh sieve and add the bits of resin you collect in the sieve to your main bowl of collected resin. Pry off as much of the hard resin droplets from your pot.
  • Your resin extract still needs to go through the bath once more to remove traces of water soluble gum. When present, they will interfere with the process of making oil based products such as cremes and salves.
  • So, repeat the above process of boiling your resin with fresh clean water in the pot.
  • Break up the resin into smaller pieces that will melt evenly, and add it to the boiling water.
  • Stir it around and you will likely see the water getting a bit cloudy. This is the residual water-soluble gum we want to get rid of.
  •  It should only take a few minutes of gentle stirring to wash the rest of the gum out of the resin, so after 3-5 minutes of your completely melted resin floating around, you can skim it off as above, and place it in a clean bowl to cool and set.
  •  Again, let the pot cool and collect any resin you missed.
  • Though you could use the resin extract as it is, I put it through one final process to dry it of any residual trapped water. It usually collects water in little pockets and bubbles as it floats around the boiling water.
  •  To do this, I crush the resin coarsely, exposing as much of it to the air as I can. I stop when the largest chunks are about the size of a pea.
  • Place it on a clean Teflon or silicone cookie sheet.
  •  Preheat the oven to about 120 degrees Centigrade and place the pan in the oven.
  •  The resin will melt and flow releasing all the water in the form of vapour to the air. I tilt it this way and that to expose any pockets of water while it is hot and mobile.
  •  It only takes about 2-5 minutes of the resin uniformly melted to dry it and it can be removed from the oven and left to cool.
  •   When solid and cool, lift from the cookie sheet, break it in pieces if you like and store in ziplock bags or  a glass jar. Keep it cool or it may flow a bit and adhere to a glass container.
  • I have also used a heat gun, the kind used for stripping paint to melt the resin and remove any trapped water from it. This is an option if you feel like experimenting. If it sizzles a bit it is OK.

You now have a product with a substantial, therapeutically active proportion of Boswellic acids in a concentration much, much higher than you could ever get from a comparable quantity or weight of essential oil without the risk that concentrated essential oils can represent. At the same time you likely have a healthy percent of Frankincense essential oils in their naturally occurring concentration and matrix.

It is a substance that dissolves readily in warm vegetable oils, waxes and alcohol, and lends itself with ease to cremes, oils, salves and more. You know exactly what went into your product from start to finish. You know it wasn’t adulterated along the way, that no solvents, desiccants or fillers were added, and you know you have a 100% natural product.

Though I state it is an easy process, it is rather messy. Here is a visual walkthrough of the above process including some tips on  cleanup. – https://apothecarysgarden.com/2016/11/20/extracting-the-resin-and-boswellic-acids-from-frankincense-a-visual-walkthrough/

 And remember, always take clear notes.                                                                                                                                            Your future self will thank you.

Dan