Biologia, Bratislava 55/3: 277-281, 2000.

ISSN 0006-3088 (Biologia). ISSN 1335-6399 (Biologia. Section Cellular and Molecular Biology).

 

Full Paper

Antioxidative effect of thyme in rape-seed oil.

 

Dac Vinh Nguyen1*, Maria Takacsova1, Tibor Jakubik2 & Minh Nhat Dang1

1 Department of Saccharides and Foods Preservation, Faculty of Chemical Technology, Slovak University of Technology, Radlinskeho 9, SK-81237 Bratislava, Slovakia; tel.: ++421 7 59325557, e-mail: dacvinh@chelin.chtf.stuba.sk

2 Mass Spectrometry Laboratory, Faculty of Chemical Technology, Slovak University of Technology, Radlinskeho 9, SK-81237 Bratislava, Slovakia

* corresponding author

Received: January 14, 2000 / Accepted: March 14, 2000

 

Abstract

The composition and antioxidative effect of the ethanol extract from thyme was studied in rape-seed oil. The major thyme extract components involve carvacrol (26.4%), thymol (24%), p-cymene (5.4%), caryophylene (5.3%), palmitic acid (4.9%), verbenone (4.2%), carvone (3.7%) and borneol (3.3%). The thyme extract was added to oil and samples were stored in the dark at 40 oC. The results of the peroxide and thiobarbituric acid values have shown that the thyme extract has an antioxidative effect. Its action is associated with the high content of carvacrol and thymol.

 

Key words: antioxidant, thyme, terpenes, autooxidation.