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    Constituents of the Essential Oil of Sea Fennel (Crithmum Maritimum L.) Growing Wild in Turkey
    (Mary Ann Liebert Inc, 2006) Özcan, M. Musa; Pedro, Luis G.; Figueiredo, A. Cristina; Barroso, José G.
    The essential oils isolated by hydrodistillation from freshly obtained aerial parts of sea fennel (Crithmum maritimum L.) were found to be a yellow liquid, obtained in a yield of 0.2% (vol/wt) based on wet weight. The essential oils obtained from young leaves and branches of C. maritimum, collected at two different locations in Turkey (Sipahili and Yesilovacik), were analyzed by gas chromatography-mass spectrometry. Twenty-three components were identified accounting for more than 99% of the total oils. The oils contained mainly monoterpenes, amounting to 89.0% and 99.6%, respectively, of the oils, with gamma-terpinene (36% and 32%), beta-phellandrene (21% and 22%), and sabinene (13% and 9%) as the main components.
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    Determination of some inorganic metals in edible vegetable oils by inductively coupled plasma atomic emission spectroscopy (ICP-AES)
    (CONSEJO SUPERIOR INVESTIGACIONES CIENTIFICAS-CSIC, 2008) Pehlivan, Erol; Arslan, Gülşin; Göde, Fethiye; Altun, Türkan; Özcan, M. Musa
    Seventeen edible vegetable oils were analyzed spectrometrically for their metal (Cu, Fe, Mn, Co, Cr, Pb, Cd, Ni, and Zn) contents. Toxic metals in edible vegetable oils were determined by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). The highest metal concentrations were measured as 0.0850, 0.0352, 0.0220, 0.0040, 0.0010, 0.0074, 0.0045, 0.0254 and 0.2870 mg/kg for copper in almond oil, for iron in corn oil-(c), for manganese in soybean oil, for cobalt in sunflower oil-(b) and almond oil, for chromium in almond oil, for lead in virgin olive oil, for cadmium in sunflower oil-(e), for nickel almond oil and for zinc in almond oil respectively. The method for determining toxic metals in edible vegetable oils by using ICP-AES is discussed. The metals were extracted from low quantities of oil (2-3 g) with a 10% nitric acid solution. The extracted metal in acid solution can be injected into the ICP-AES. The proposed method is simple and allows the metals to be determined in edible vegetable oils with a precision estimated below 10% relative standard deviation (RSD) for Cu, 5% for Fe, 15% for Mn, 8% for Co, 10% for Cr, 20% for Pb, 5% for Cd, 16% for Ni and 11% for Zn.
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    Evaluation of Drying Methods with Respect to Drying Parameters, Some Nutritional and Colour Characteristics of Peppermint (Mentha X Piperita L.)
    (Pergamon-Elsevier Science Ltd, 2010) Arslan, Derya; Özcan, M. Musa; Mengeş, Hakan Okyay
    Peppermint leaves (Mentha x piperita L.) were dried by using sun, oven (50 C) and microwave oven (700W) drying methods. Page, Modified page, Midilli and 1(00k models adequately described the oven, sun and microwave oven drying behaviours of peppermint leaves. The drying process was explicated through the diffusional model in order to obtain effective diffusivity values, which were determined as 3.10 x 10-12, 2.68 x 10-12 and 4.09 x 10-1 for the sun, oven and microwave oven drying process, respectively. Fresh and dried herbs had high amounts of K, Ca, P. Mg, Fe and Al minerals. Microwave oven drying method leaded to the lowest increase in Ag, Al, B, Na, Mn, Mg and Zn values than the other drying methods. Microwave oven drying shortened the drying time, revealed the highest phenolic content and optimum colour values.