Browsing by Author "Javidipour, I."

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Analysis of Fatty Acid Profiles of Pistachios (Pistacia Vera L.) and Native Walnuts (Juglans Regia L.) From Turkey
(Asian Journal of Chemistry, 2010) Dogan, Adnan; Celik, Ferit; Balta, Fikri; Javidipour, I.; Yavic, Adnan
This work identities fatty acid compositions of 7 pistachio varieties (Pistacia vera L.) from G. Antep and Siirt (southeastern Turkey) and 9. walnut (Juglans regia L.) genotypes from Denizli (western Turkey). Pistachio varieties contained 57.77% oil, 8.73% palmitic acid, 0.81 palmitoleic acid, 2.26% stearic acid. 71.90% oleic acid, 14.91% linoleic acid, 0.88% linolenic acid, 0.08% myristic acid, 0.11% arachidic acid and 0.21% gadoleic acid, respectively. Walnut genotypes contained 65.57% oil, 5.80% palmitic acid, 0.16 palmitoleic acid, 2.65% stearic acid, 59.85% oleic acid, 14.20% linoleic acid. 0.88% linolenic acid, 0.08% myristic acid, 0.11% arachidic acid and 0.21% gadoleic acid, respectively. The mean ratio of unsaturated fatty, acids and saturated fatty acids was 8.02 for pistachio varieties and 11.0 for walnut genotypes.
Analysis of Oil Composition of Native Almonds From Turkey
(Asian Journal of Chemistry, 2010) Celik, Ferit; Balta, M. Fikret; Javidipour, I.; Dogan, Adnan
Native almond genotypes contained 43.5-62.4% oil, 5.61-16.48% palmitic acid. 0.32-0.69% palmitoleic acid, 1.23-3.89% stearic acid, 68.99-81.71% oleic acid, 7.70-21.65% linoleic acid, 0.08-0.21% linolenic acid and 0.22-0.91% myristic acid. In addition. they had 78.74-92.97% unsaturated fatty acid content, 7.03-21.28% saturated fatty acid content and 3.7-13.2 unsaturated fatty acid/saturated fatty acid ratio.
Distribution of Fatty Acids in a Seedling Almond Population and Their Mutual Relationships
(Asian Journal of Chemistry, 2010) Celik, Ferit; Balta, Fikri; Dogan, Adnan; Javidipour, I.; Kazankaya, Ahmet
This paper deals with determining kernel fatty acid contents based on oil distribution in a seedling almond population consist of 90 seedling trees from Turkey and mutual relationships among fatty acids. Almond Population was divided into three groups based on the range of fat contents. Genotypes averagely contained 6.70% palmitic acid, 0-0% palrytitolcic acid, 1.78% stearic acid, 72.83% oleic acid, 18.03% linoleic acid, 0.15% linolenic acid and 0.39% myristic acid. In addition, they had 91.58% unsaturated fatty acid content, 8.87% saturated fatty acid content and 10.32 unsaturated/saturated ratio. Findings of this study indicate that contents of oleic and linoleic acids were influenced by the range of oil in the seedling population.
The Effect of Whey Protein Concentrate Based Edible Coatings Containing Natamycin Orlysozyme-Xanthan Conjugate on Microbial Properties of Ultrafiltrated White Cheese
(Tarbiat Modares University, 2019) Jalilzadeh, A.; Hesari, J.; Peighambardoust, S.H.; Jodeiri, H.; Javidipour, I.
In this research, the effects of whey protein concentrate based edible coatings containing different concentrations of natamycin and lysozyme–xanthan gum conjugate were investigated. For this purpose, Escherichia coli O157:H7 (as an indicator for gram negative bacteria and also resistant to commercial pasteurization), Staphylococcus aureus (as an indicator of gram-positive bacteria), and Penicillium chrysogenum were inoculated to ultrafiltrated white cheese surface and the microbial properties of cheese samples were evaluated during 28 days storing.The results showed that all coated treatments significantly reduced the growth of Penicillium chrysogenum. Natamycin-containing coatings have been more effective in reducing the mold population than lysozyme-xanthan-containing coatings. Coated samples containing 600 ppm lysozyme-xanthan reduced E. coli O157: H7 growth 2.09 log compared to control samples.Also, the growth rates of Staphylococcus aureus were lower in all samples treated with lysozyme-xanthan than control sample. The lowest growth rate of Staphylococcus aureus was observed in the coated sample containing 600 ppm lysozyme-xanthan on 28th day, with a microbial population of 2.60 logarithms. Unlike other treatments, the growth rate of Staphylococcus aureus in the sample coated containing 600 ppm lysozyme-xanthan was descending over 28 days.The results of this study showed that whey protein based edible coating can be used as a carrier of natamycin and lysozyme-xanthan in optimal concentration, for increasing the microbial quality of UF cheese. © 2019 Tarbiat Modares University. All Rights Reserved.
Effects of Ascorbyl Palmitate and Metal Ions on Oxidation of Sunflower Oil Under Accelerated Oxidation Conditions
(Pakistan Agricultural Scientists Forum, 2017) Basturk, A.; Boran, G.; Javidipour, I.
In this study, oxidative stability of sunflower oil was studied under accelerated oxidation conditions. First, refined commercial sunflower oil was examined for its composition of fatty acids and tocopherols. Then, oil samples were prepared with Fe+2 and Cu+2 ions (0, 0.15 and 0.3 mg/kg) and ascorbyl palmitate (0, 200 and 400 mg/kg). Oil samples were kept at different temperatures (30, 50 and 70 degrees C) for 20 days. Oxidation parameters including peroxide value, malonaldehyde concentration and hexanal content were periodically followed during the storage to investigate the effects of metal ions and ascorbyl palmitate on oxidation of sunflower oil. Results showed that temperature had significant effects on elevation of all oxidation parameters studied (P<0.05). It was also found that the concentrations of metal ions and ascorbyl palmitate significantly affected the oxidation of sunflower oil. Addition of 400 mg/kg ascorbyl palmitate restricted increment of peroxide value in both Fe2+ and Cu2+ added samples. While Fe2+ significantly increased the hexanal content, the presence of Cu2+ increased both hexanal and malonaldehyde values in sunflower oil during oxidation. In samples held at lower temperatures, the hexanal content was almost steady but dramatically increased at higher temperatures. It is concluded that hexanal content could be well considered as an indicator of oil oxidation along with malonaldehyde concentration.
Effects of Frozen Storage and Vacuum Packaging on Free Fatty Acid and Volatile Composition of Turkish Motal Cheese
(Sage Publications Ltd, 2011) Andic, S.; Tuncturk, Y.; Javidipour, I.
Effects of vacuum packaging and frozen storage were studied on the formation of free fatty acids (FFAs), volatile compounds and microbial counts of Motal cheese samples stored for a period of 180 days. The FFA concentration of Motal cheese samples increased throughout the storage period of 180 days. However, the FFA contents of samples stored at -18 degrees C showed considerably lower values than those of the samples stored at 4 degrees C. Palmitic (C16:0) and oleic (C18:1) acids were the most abundant FFAs in all the treatments. The volatile compounds detected by headspace solid-phase microextraction (HS-SPME) profile of Motal cheese consisted of 16 esters, 10 acids, 6 ketones, 4 alcohols, 3 aldehydes, styrene, p-cresol and m-cresol. Results showed that storage at -18 degrees C can limit the excessive volatile compound formation. Samples stored at 4 degrees C with vacuum packaging showed comparatively high concentration of esters, ketones and alcohols. Samples stored without vacuum packaging at 4 degrees C showed 2-nonanone as the most abundant volatile compound toward the end of storage period. Storage at 4 degrees C under vacuum packaging decreased the mold-yeast counts of samples. Frozen storage could be a suitable method for storing the Motal cheese.
Fatty Acids, Tocopherols, Selenium and Total Carotene of Pistachios (P. Vera L.) From Diyarbakir (Southestern Turkey) and Walnuts (J. Regia L.) From Erzincan (Eastern Turkey)
(Sage Publications Ltd, 2012) Ozrenk, K.; Javidipour, I.; Yarilgac, T.; Balta, F.; Gundogdu, M.
In this study, 14 well-adapted genotypes of pistachio (Pistachio vera L.) grown in Diyarbakir (Southeastern Turkey) and 15 walnut (Juglans regia L.) genotypes grown in Erzincan (Eastern Turkey) have been studied. Pistachio genotypes contained 8.16-9.33% palmitic acid, 0.54-0.68% palmitoleic acid, 2.35-4.21% stearic acid, 67.81-76.82% oleic acid, 9.42-18:32% linoleic acid, 0.27-0.38% linolenic acid and 0.19-0.33 % arachidic acid. The range of selenium, alpha-tocopherol, gamma-tocopherol, delta-tocopherol, alpha-tocotrienoid, gamma-tocotrienoid and total carotenoid of these promising genotypes were found to be between 11.44 and 190.71 ng/g, 1.36 and 26.93, 36.17 and 170, 0.45 and 2.61, 0.96 and 3.76, 2.33 and 37.72 and 1.01 and 4.93 mg/kg, respectively. Linoleic acid ranging from 43.19% to 53.16% was the most abundant fatty acid in 15 pomologically selected walnut genotypes, followed by oleic and linolenic acids (31.91% and 11.46%, respectively). Their selenium contents ranged between 7.25 and 57.67 ng/g. gamma-Tocopherol was the predominant tocopherol in walnut genotypes. Pistachio and walnut genotypes with higher unsaturated fatty acids, tocopherols and selenium contents may be valuable for nutritional breeding efforts.
Phytochemicals and Antioxidant Activities of Twelve Edible Wild Plants From Eastern Anatolia, Turkey
(Sociedade Brasileira de Ciencia e Tecnologia de Alimentos, SBCTA, 2022) Alaca, K.; Okumuş, E.; Bakkalbaşi, E.; Javidipour, I.
Wild edible plants are important nutrient contributors in the diet of populations both in rural and urban areas. Eastern Anatolia has high plant diversity, and many plants are widely used as traditional food and medicine. In this study, approximate compositions, bioactive compounds and antioxidant capacities of twelve edible wild plants in Eastern Anatolia were investigated. L-ascorbic acid, total chlorophyll, total carotenoid and total phenolic contents of analyzed edible wild plants ranged from 1.03 to 10589.71 mg/kg dw, 88.70 to 1740.02 mg/kg dw, 25.00 to 700.20 mg β-car. eq./kg dw, and 444.14 to 2071.96 mg GA eq./kg dw, respectively. Chlorogenic and gallic acids were the most abundant phenolic acids in the plant samples. Rutin, quarcetin, kaempferol and luteolin were identified and quantified in the samples. Luteolin (15.98-832.82 mg/kg dw) was identified in almost all tested plants (except Coriandrum sativum). The results showed that Arum conophalloides, Rumex tuberosus, Rheum ribes, Plantago lanceolata, Tragopogon longirostris, and Chenopodium album had high contents of different phytochemicals, and antioxidant activities. These plants are available for a short time of the year and in small quantities. Future studies should be focused on biological, functional and toxicological assays and finally for commercial production of these promising plants. © 2022, Sociedade Brasileira de Ciencia e Tecnologia de Alimentos, SBCTA. All rights reserved.
Seed Oil Profiles of Five Rose Hip Species (Rosa Spp.) From Hakkari, Turkey
(Wfl Publ, 2010) Celik, F.; Balta, F.; Ercisli, S.; Kazankaya, A.; Javidipour, I.
The seed oil of rose hip is mainly used for cosmetic and medicinal purposes. This study deals with detecting the seed oil contents of five rose hip species growing in Hakkari, Eastern Turkey. By GC, seed oil contents were determined as 4.97% for Rosa canina, 5.26% for Rosa dumalis var. boissieri, 6.59% for Rosa pulverulanta, 5.44% for Rosa iberica, and 7.95% for Rosa heckeliana subsp. vanheurckiana. Seeds contained 4.25-5.15% of palmitic acid, 0.22-0.89% of palmitoleic acid, 1.80-2.43% of stearic acid, 20.35-23.03% of oleic acid, 41.14-51.06% of linoleic acid, 19.66-23.83% of linolenic acid, and 0.94-1.29% of arachidic acid depending on the species. The contents of saturated fatty acid were between 7.39% (Rosa heckeliana subsp. vanheurciana) and 8.84% (Rosa dumalis var. boissieri). The contents of unsaturated fatty acids ranged from 83.28% (Rosa dumalis var. boissieri) to 91.57% (Rosa heckeliana subsp. vanheurciana). The oleic, linoleic and linolenic acids were major fatty acids in all rose hip species.