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8173364 
Journal Article 
Effect of rosemary leaves on autooxidation of purified corn and soybean triacylglycerols 
El-Shattory, Y; Aly, SM; Hamed, SF; Schwarz, K 
2005 
Egyptian Journal of Chemistry
ISSN: 0449-2285 
48 
2 
155-167 
English 
ANTIOXIDANT activity of dry ground rosemary (Rosmarinus officinalis L.) leaves of particle size ≤ 70 μm in purified corn and soybean oils triacylglycerols (CO TAG, SO TAG) was studied at 60±1°C in dark. The systems were purified corn or purified soybean triacylglycerols without antioxidants (controls), with 100 micromole α-tocopherol, 100 micromole butylated hydroxyanisol (BHA), 100 micromole butylated hydroxytoluene (BHT), 100 micromole tert-butyl hydroquinone (TBHQ), 100 micromole Trolox, 180 ppm carnosic acid and 0.2% ground rosemary leaves (filtered and non-filtered). Oxidation was followed up by ferrous oxidation (Thiocyanate method) and hexanal determination. Diffusion of antioxidant constituents from rosemary into oil was monitored by radical scavenging method using α,α′-biphenyl- β-picrylhydrazyl (DPPH). Rosemary showed to be an effective antioxidant bearing plant especially with oils containing high percentage of polyunsa-turated fatty acids. In CO TAG the order of decreasing hydroperoxide inhibition was Trolox ≥ rosemary > TBHQ > carnosic > α-tocopherol > BHA. In SO TAG the inhibiton order was rosemary > Trolox > TBHQ >carnosic > α-tocopherol > BHA. 
α-tocopherol; Antioxidant; Autooxidation; BHA; BHT; Purified corn oil triacylglycerols; Purified soybean triacylglycerols; Rosemary; TBHQ; Trolox