Oleoresin

Oleoresins are semi-solid extracts composed of resin and essential or fatty oil. They are obtained by evaporating relevant solvents.[1] The oleoresin of conifers is known as crude turpentine or gum turpentine, which consists of oil of turpentine and rosin.[2]

Properties

Processing of oleoresins is conducted on a large scale, especially in China (400,000 tons per year in the 1990s), but the technology is too labor-intensive to be viable in countries with high labor costs, such as the US.[3]

Use

Oleoresin capsicum tear gas being sprayed on a guardsman

Oleoresin capsicum is commonly used as a basis for pepper sprays. There are also uses known in the manufacture of soaps of cosmetics, as well as coloring agents for foods. A well-known pipe thread sealant, Rectorseal #5, is stated to have an "oleoresinous base".

References

  1. ^ Commission, British Pharmacopoeia (2009), "EXTRACTS", British Pharmacopoeia, vol. 3, Stationery Office, ISBN 978-0-11-322799-0
  2. ^ "Turpentine". Britannica. Retrieved 2022-03-02.
  3. ^ Lars-Hugo Norlin (2002). "Tall Oil". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a26_057. ISBN 978-3-527-30673-2.
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