Wednesday, January 18, 2012

DIY - Homemade Rosemary Leaf Extract

I like using Rosemary Leaf Extract in my Homemade Skincare Products. It has high concentration of antioxidants and gentle anti-inflammatory components.

If you wanna learn a little about Rosemary and its Extracts, here the links: The Chemistry of Rosemary from (click on the citation to read more):
"The leaves contain 0.5% to 2.5% of volatile oil. The major components of the oil include monoterpene hydrocarbons (alpha and beta-pinene), camphene, limonene, camphor (10% to 20%), borneol, cineole, linalool, and verbinol. Rosemary contains a wide variety of volatile and aromatic components. Flavonoids in the plant include diosmetin, diosmin, genkwanin, luteolin, hispidulin, and apigenin. One analysis reports 3 new flavonoid glucuronides, also found in the leaves. Other terpenoid constituents in rosemary include triterpenes oleanolic and ursolic acids and diterpene carnosol. The concentration of phenolic diterpenes in certain commercial rosemary extracts has been determined by HPLC. Phenols in rosemary include caffeic, chlorogenic, labiatic, neochlorogenic, and rosmarinic acids. Rosemary contains high amounts of salicylates".
       The major active antioxidant components of Rosemary Extract are Carnosol, Carnosic acid, and Rosmarinic acid.

According to this study "Antioxidant Activity of a Rosemary Extract and Its Constituents, Carnosic Acid, Carnosol, and Rosmarinic Acid, in Bulk Oil and Oil-in-Water Emulsion" by Edwin N. Frankel, Shu-Wen Huang, Robert Aeschbach, and Elizabeth Prior:

*in "oil-in-water emulsion, the rosemary compounds were less active than in bulk oil, and the rosemary extract, carnosic acid, carnosol, and ?-tocopherol were more active than rosmarinic acid"

and another point
*"Carnosol and carnosic acid were much more active antioxidants in corn oil-in-water emulsions buffered at pH 4 and 5 than at pH 7."
So maybe it is not such a good idea to use this Rosemary Extract in Lotions (Emulsions) and if I want to enjoy its antioxidant effect making a Gel will be a better idea...

Next research I find very interesting is "Synergistic antioxidant and antibacterial activity of rosemary plus butylated derivatives" by Catalina S. Romano, Karina Abadi, Victoria Repetto, Adrian A. Vojnov , Silvia Moreno. They were studying Antioxidant and Antibacterial activity of a methanolic (Alcohol based) Rosemary Extract, especially "the combinatory activities of its main polyphenols": Carnosic Acid and Rosmarinic Acid. Their results were pretty impressive...

Making Alcohol-based Rosemary Extract:
I do not have methanol (it's a very dangerous alcohol) so I've used diluted Ethanol (Vodka) as a Solvent for my Rosemary Leaf Extract... To learn more about how to DIY - Homemade Herbal Extracts: Alcohol Based Extracts , and how I've made my first Homemade Thyme Leaf, Rosemary Leaf and Licorice Root Extracts , please click on the links... This one I've extracted by using only 80 proof (or 40%) Vodka as a solvent.

Directions : Fill a glass bottle (60ml) with the dried Rosemary Leaves, add Vodka to cover the herbs (about 50ml), shake it well. After three weeks filter it, and you can use it.

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6 comments to "DIY - Homemade Rosemary Leaf Extract"

Anonymous said...
January 19, 2012 10:30 AM


test2 said...
January 19, 2012 10:31 AM


Lenna said...
February 02, 2014 5:11 PM

Do you know if fresh rosemary will work for extract?

Lenna said...
February 02, 2014 5:13 PM

Do you know if fresh rosemary will work for extract?

Lenna said...
February 02, 2014 5:13 PM

Do you know if fresh rosemary will work for extract?

Lenna said...
February 02, 2014 5:13 PM

Do you know if fresh rosemary will work for extract?

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