New opportunities of the application of natural herb and spice extracts in plant oils: application of electron paramagnetic resonance in examining the oxidative stability.
The aim of this study was to establish the applicability of natural water-ethanol extracts of herbs and spices in increasing the oxidative stability of plant oils and in the production of novel food. Different concentrations (0, 100, 300, 500, and 700 ppm) of spice extracts and butylated hydroxyanisole (BHA) (100 ppm) were added to the studied oils. The antioxidant activity of spice extracts was determined with electron paramagnetic resonance (EPR) spectroscopy using 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical assay. The study showed that the extracts significantly increased the oxidative stability of the examined oils when compared to one of the strongest synthetic antioxidants--BHA. The applied simple production technology and addition of herb and spice extracts to plant oils enabled enhancement of their oxidative stability. The extracts are an alternative to the oils aromatized with an addition of fresh herbs, spices, and vegetables because it did not generate additional flavors thus enabling the maintenance of the characteristic ones. Moreover, it will increase the intake of natural substances in human diet, which are known to possess anticarcinogenic properties.
Dept of Chemistry, Faculty of Life Sciences, Warsaw Univ of Life Sciences, Nowoursynowska 159C, 02-776 Warsaw, Poland. mariola_kozlowska@sggw.pl
Mariola
M
Kozłowska
Arkadiusz
A
Szterk
Katarzyna
K
Zawada
Tomasz
T
Ząbkowski
D000975:Antioxidants / Q000032:analysis*; D001713:Biphenyl Compounds / Q000032:analysis; D002083:Butylated Hydroxyanisole / Q000032:analysis; D004578:Electron Spin Resonance Spectroscopy / Q000379:methods*; D010084:Oxidation-Reduction; D010851:Picrates / Q000032:analysis; D010936:Plant Extracts / Q000032:analysis* / Q000737:chemistry; D010938:Plant Oils / Q000737:chemistry*; D017365:Spices
D000975:Antioxidants; D001713:Biphenyl Compounds; D010851:Picrates; D010936:Plant Extracts; D010938:Plant Oils; D002083:Butylated Hydroxyanisole; C004931:1,1-diphenyl-2-picrylhydrazyl