Spin trapping studies of essential oils in lipid systems

• Autorzy: Makarova K. , Drązikowska K. , Suska B. , Zawada K. , Wawer I.

Identyfikatory

DOI

10.1515/nuka-2015-0082

• Konferencja: III Electron Magnetic Resonance Forum EMR-PL (3 ; 23-25.05.2014 ; Kraków, Poland)
• Języki publikacji: EN

Abstrakty

EN

In the present work, we report the results of a spin trapping ESR study of four essential oils widely used for skin care products such as creams and bath salts. The studied essential oils are Rosmarini aetheroleum (rosemary), Menthae piperitae aetheroleum (mint), Lavandulae aetheroleum (lavender), and Thymi aetheroleum (thyme). Fenton reaction in the presence of ethanol was used to generate free radicals. The N-tert- -butyl-α-phenylnitrone (PBN) was used as a spin trap. In the Fenton reaction, the rosemary oil had the lowest effect on radical adduct formation as compared to the reference Fenton system. Since essential oils are known to be lipid soluble, we also conducted studies of essential oils in Fenton reaction in the presence of lipids. Two model lipids were used, namely 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) and 1,2-dipalmitoyl-sn- -glycero-3-phosphocholine (DPPC). The obtained results suggested that in the presence of DOPC lipids, the •OH and PBN/•CHCH3(OH) radicals are formed in both phases, that is, water and lipids, and all the studied essential oils affected the Fenton reaction in a similar way. Whereas, in the DPPC system, the additional type of PBN/X (aN = 16.1 G, aH = 2.9 G) radical adduct was generated. DFT calculations of hyperfi ne splittings were performed at B3LYP/6-311+G(d,p)/EPR-II level of theory for the set of c-centered PBN adducts in order to identify PBN/X radical.

Słowa kluczowe

EN

spin trapping ESR; essential oils; DFT calculations; lipids

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2015
• Tom: Vol. 60, No. 3, part 1
• Strony: 461--468
• Opis fizyczny: Bibliogr. 14 poz., rys.

Twórcy

autor

Makarova K.

• Department of Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, 1 Banacha Str., 02-097 Warsaw, Poland, Tel./Fax: [phone]

autor

Drązikowska K.

• Department of Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, 1 Banacha Str., 02-097 Warsaw, Poland, Tel./Fax: [phone]

autor

Suska B.

• Department of Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, 1 Banacha Str., 02-097 Warsaw, Poland, Tel./Fax: [phone]

autor

Zawada K.

• Department of Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, 1 Banacha Str., 02-097 Warsaw, Poland, Tel./Fax: [phone]

autor

Wawer I.

• Department of Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, 1 Banacha Str., 02-097 Warsaw, Poland, Tel./Fax: [phone]

Bibliografia

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