Psyllic acid (also psyllostearic acid, tritriacontanoic acid or ceromelissic acid) is a saturated fatty acid. The rare fatty acid occurs in insect waxes, in the wax of wax scale insects, in the propolis of bees and bumblebees and in a few plants. Its name is derived from the alder leaf flea (Psylla alni).
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| Preferred IUPAC name
Tritriacontanoic acid | |
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| C33H66O2 | |
| Molar mass | 494.889 g·mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Alkali salts
editThe alkali salts of psyllic acid are precipitated when alcoholic solutions of the acid and an alkali hydroxide are mixed. The silver and barium salts can be obtained by adding aqueous alcoholic solutions of silver nitrate and barium chloride to alcoholic solutions of the acid. The following salts have been analyzed: C33H65O2Na, C66H130O4Ba, and C33H65O2Ag. Psylla wax is hydrolyzed by alcoholic potassium hydroxide as well as by hydrobromic acid.[1][2]
Nutritional sources
editPsyllic acid is present in Chinese wolfberries.[3][4]
See also
editReferences
edit- ^ "Abstracts of Papers on Organic Chemistry". Journal of the Chemical Society. 94 (1): 123. 1908. Retrieved 2010-05-10.
- ^ Psylla Wax. IV. Psyllic Acid and its Salts. Ernst E. Sundvik (Zeitsch. physiol. Chem., 1908, 54, 255-257. Compare Abstr., 1898, i, 617; 1901, i, 358; 190, i, 887)
- ^ Thomas S. C., Li (2008). Vegetables and Fruits: Nutritional and Therapeutic Values. CRC Press. p. 41. ISBN 978-1-4200-6871-9.
- ^ Ram, Vishnu Ji (2001). "Herbal Preparations as a Source of Hepatoprotective Agents". Drug News & Perspectives. 14 (6): 353–63. PMID 12813598. Retrieved 2010-05-10.
External links
edit- Psyllic acid at the Nature Lipidomics Gateway