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Molecules 2008, 13(4), 795-803; doi:10.3390/molecules13040795

Contribution to the Analysis of the Essential Oil of Helichrysum italicum (Roth) G. Don. – Determination of Ester Bonded Acids and Phenols

1
Department of Organic Chemistry, Faculty of Chemistry and Technology, N. Tesle 10/V, 21000 Split, Croatia
2
Department of Biochemistry, Faculty of Chemistry and Technology, N. Tesle 10/V, 21000 Split, Croatia
*
Author to whom correspondence should be addressed.
Received: 6 March 2008 / Revised: 3 April 2007 / Accepted: 3 April 2008 / Published: 7 April 2008
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Abstract

The essential oil of Helichrysum italicum (Roth) G. Don (everlasting orImmortelle essential oil) was isolated by hydrodistillation and analysed by GC and GCMS.Forty four compounds were identified. The main components were α-pinene(12.8%), 2-methyl-cyclohexyl pentanoate (11.1 %), neryl acetate (10.4%), 1,7-di-epi-α-cedrene (6.8%) and other compounds. The oil was fractionated and ester-containingfraction was hydrolysed with KOH/H2SO4. The liberated volatiles were analysed by GCand GC-MS: three phenols and twenty seven volatile carboxylic acids were identified[70% low fatty acids (C2-C5), 15% C10-C12 acids and 15% other acids]. The main acidswere acetic acid (24.3%) propanoic acid (17.2%), 2-methylpropanoic acid (11.4%),dodecanoic acid (8.7%), 2-methylbutanoic acid (8.3%), (Z)-2-methylbutenoic acid(5.1%) and decanoic acid (4.6%). With respect to the identified bonded carboxylic acids,the minimal number of esters in the oil was twenty seven, but their overall quantity wasprobably larger due to different possible combinations of alcohols with acids to formesters. On the other hand, only six main esters were identified in the oil beforefractionation and hydrolysis. View Full-Text
Keywords: Helichrysum italicum (Roth) G. Don; essential oil; ester bounded acids; GCFID; GC-MS. Helichrysum italicum (Roth) G. Don; essential oil; ester bounded acids; GCFID; GC-MS.
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Mastelić, J.; Politeo, O.; Jerković, I. Contribution to the Analysis of the Essential Oil of Helichrysum italicum (Roth) G. Don. – Determination of Ester Bonded Acids and Phenols. Molecules 2008, 13, 795-803.

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