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Öğe Bioactive properties, fatty acid compositions, and phenolic compounds of some date palm (Phoenix dactylifera L.) cultivars(WILEY, 2020) Al-Juhaimi, Fahad Y.; Özcan, Mehmet Musa; Uslu, Nurhan; Ghafoor, Kashif; Babiker, Elfadil E.; Ahmed, Isam A. MohamedThe antioxidant activity values and total phenol contents of date flesh samples changed between 6.61 (Osailah)-10.72% (Rothanh Qassim) and 50.64 (Osailah)-98.61 mgGAE/100 g (Rothanh Qassim), respectively. Hence cultivars showed significant (p < .05) variations. Among phenolic compounds, gallic acid contents of date flesh varied between 1.61 (Sbakah) and 11.23 mg/100 g (Rushudiah), 3,4-dihydroxybenzoic acid between 0.30 (Rushudiah) and 2.68 mg/100 g (Rothanh Qassim), and (+)-catechin between 0.29 (Osailah) and 2.98 mg/100 g (Nabtat Ali). Fatty acid composition of date flesh showed palmitic acid changing from 12.77 (Osailah) to 16.04% (Rothans Qassim), elaidic acid from 39.21 (Osailah) to 67.99% (Sbakah), and linoleic acid from 11.61 (Sbakah) to 18.95% (Osailah). Crude protein contents of date flesh samples were between 2.06 (Nabtat Ali) and 16.67% (Osailah). Ca, K, Mg, and P were the major elements in date fruits. Ca, K, and P contents of date flesh samples were found between 10.90 (Sbakah)-237.18 mg/kg (Rushudiah), 54.17 (Rothanh Qassim)-214.66 mg/kg (Rushudiah), and 8.24 (Nabtat Ali)-26.77 mg/kg (Rushudiah), respectively. Practical applications The date palm (Phoenix dactylifera L.) is one of the mankind's oldest cultivated plants. The date derivatives are rich in nutraceuticals and pharmaceuticals. Date flesh has nutritive components as potentially active antioxidant phytochemicals. The date has been an important crop in the desert regions of Arabian countries. Dates are rich in certain nutrients and provide a good source of rapid energy.Öğe Characterization of physico-chemical and bioactive properties of oils of some important almond cultivars by cold press and soxhlet extraction(SPRINGER INDIA, 2020) Özcan, Mehmet Musa; Al-Juhaimi, Fahad Y.; Ghafoor, Kashif; Babiker, Elfadil E.; Özcan, Mustafa MeteThe oleic acid composition of almonds oils expressed by cold press varied from 73.56% in Cristomorto cultivar to 76.59% in Tuono while oleic acid in oils extracted by soxhlet method ranged from 71.86% in Cristomorto and 75.63% in Tuono cultivars. Also, oil from cold press extraction contained 19.51% and 21.86% linoleic acid for Ferragnes and Tuono almond cultivars, respectively, while 18.74 and 20.51% linoleic acid was recorded in Soxhlet extracted oil from Ferragnes and Tuono almonds, respectively. In addition, alpha-tocopherol contents of the oil samples varied significantly (p<0.05) from 14.18 to 16.86 mg/100 g in Tuono and 15.71-17.96 mg/100 g in Ferragnes for cold-press and soxhlet extracted oils, respectively. beta-Sitosterol composition of the oil obtained by cold press ranged from 157.94 (Tuono) and 171.68 mg/100 g (Cristomorto) while beta-sitosterol content varied from 148.91 (Tuono) and 159.68 mg/100 g (Cristomorto) for oil extracted by Soxhlet method.Öğe Chemical composition of essential oil from aerial parts and fruits of Hyssopus officinalis L., Origanum acutidens, Prangos uechritzii, H-hircinum L. and Hypericum polyphyllum subsp polyphyllum(AGRIMEDIA GMBH, 2015) Figueredo, Guilles; Özcan, Mehmet Musa; Chalchat, Jean Claude; Bağcı, Yavuz; Chalard, Pierre; Al-Juhaimi, Fahad Y.; Doğu, SüleymanThe chemical constituents of essential oil by hydrodistillation from the aerial parts of Hyssopus officinalis L., Origanum acutidens and Prangos uechtrizii wild growing in Turkey were extracted by hydrodistillation, and analysed by GC and GC-MS. The major constituents of H. officinalis oil were pinocarvone (29.17%), trans-pine camphone (27.19 %), beta-pinene (17.63%), cis-pinocamphone (4.68%) and myrcene (2.92%). The major constituents of the essential oil of O. acutidens were carvacrol (76.2%), p-cymene (7.4%) and borneol (3.2%). The major components of H. hircinum were alpha-pinene (6.96%), beta-pinene (28.79%), limonene (3.60%), cc-terpineol (7.20%), spathulenol (5.60%), caryophyllene oxyde (2.99%), humulene-1,2-epoxyde (4.20%), alpha-eudesmol (3.96%) and methyle linolenate (7.27%), while ishwarana (64.36%), aristolochene (1.50%), beta-selinene (2.61%), valencene (2.08%), alpha-selinene (1.32%), spathulenol (2.42%), caryophyllene oxyde (2.89%) and beta-eudesmol (4.30%) were recorded as the main constituents of H. polyphyllum.Öğe Chemical Composition of The Essential Oil of The Flowers and Leaves of Calba Tea (Dorystoechas hastata Boiss & Helder. ex Bentham)(TAYLOR & FRANCIS LTD, 2016) Özcan, Mehmet Musa; Chalchat, Jean Claude; Figueredo, Gilles; Bağcı, Yavuz; Dural, Huseyin; Savran, Ahmet; Al-Juhaimi, Fahad Y.The essential oils of flower and leaves of Dorystoechas hastata Boiss & Helder. ex Bentham, grown in Turkey, was obtained by hydrodistillation and analysed by GC and GS-MS. Fourty components were identified in the flowers oil, which represented about 93.97 % of the total composition of the oil. The major constituents of the flower essential oil were myrcene (19.37 %), 1,8-cineole (14.30 %), beta-pinene (9.19 %), alpha-pinene (8.49 %) and beta-caryophyllene (6.18 %). Thirty-seven components were established in the leaves oil, making up 97.16 % of the total composition. The main constituents of the essential oil of the leaves were myrcene (20.71 %), 1,8-cineole (18.76 %), beta-pinene (12.51 %), alpha-pinene (8.54 %), bornyl acetate (7.28 %) and terpinene-4-ol (6.19 %). As seen, myrcere, 1,8-cineole and beta-pinene for both oils were the main components.Öğe Comparative study of mineral and oxidative status of Sonchus oleraceus, Moringa oleifera and Moringa peregrina leaves(SPRINGER, 2017) Al-Juhaimi, Fahad Y.; Ghafoor, K.; Ahmed, Isam A. Mohamed; Babiker, E. E.; Özcan, Mehmet MusaA comparative study on mineral composition, total phenol, anthocyanin, flavonoid and phenolic compounds, and antioxidant activity of leaves of Sonchus oleraceus (SOL), Moringa oleifera (MOL) and Moringa peregrina (MPL) was carried out. The SOL had significantly (p <= 0.05) higher Ca (18661.71 mg kg(-1)DW) and S (5647.11 mg kg(-1)DW) than those of MOL and MPL. However, P, K, and Mg contents of SOL were found significantly (p <= 0.05) lower than those of MOL and MPL. Fe was the most abundant trace element in SOL and was comparable to that of MOL. Also, extracts of SOL leaves had significantly (p <= 0.05) higher total anthocyanin and flavonoids than those of Moringa species. Moreover, the total phenolics and antioxidant activities of SOL were found significantly (p <= 0.05) higher than those of MOL and MPL. The most abundant phenolic compound in SOL and MOL was gallic acid which was significantly (p <= 0.05) higher than that in MPL. The results indicated that SOL leaves are rich in mineral composition, total phenol, anthocyanin, flavonoid and phenolic compounds with higher antioxidant activity compared to those in Moringa species.Öğe Comparison of cold-pressing and soxhlet extraction systems for bioactive compounds, antioxidant properties, polyphenols, fatty acids and tocopherols in eight nut oils(SPRINGER INDIA, 2018) Al-Juhaimi, Fahad Y.; Özcan, Mehmet Musa; Ghafoor, Kashif; Babiker, Elfadil E.; Hussain, ShahzadAntioxidant activities of different nut oils ranged from 11.43 (peanut) to 65.58% (pistachio) in cold pressed oils whereas in case of soxhlet extracted oils they were in the range of 11.32 (hazelnut) to 51.28% (pistachio). beta-Carotene contents of oils obtained by cold pressing and soxhlet extraction changed between 7.53 (almond) and 13.58 A mu g/100 g (pistachio). The highest total phenol contents (2.36 mg gallic acid equivalent/100 g) were observed in pistachio oils obtained by cold press. The oleic acid contents of cold pressed and soxhlet extracted oils were between 19.88 (walnut) and 69.43% (pecan) to 19.07 (walnut) and 68.53% (pecan), respectively. The linoleic acid contents of nut oils from cold press system vary between 12.78 (hazelnut) and 63.56% (walnut), whereas in case of soxhlet extraction, it changed between 11.78 (hazelnut) and 62.41% (walnut). The alpha-tocopherol contents of cold pressed nut oils changed between 0.07 (walnut) and 257.42 mg/kg (hazelnut) alpha-tocopherol contents of nut oils extracted by soxhlet extraction changed between 0.03 (pistachio) and 209.73 mg/kg (hazelnut). The catechin contents of cold pressed nut oils were between 0.56 (cashew) and 3.76 A mu g/100 g (pistachio), whereas that of soxhlet extracted oil varied between 0.64 (cashew) and 3.82 A mu g/100 g (cashew).Öğe The effect of Acacia nilotica seed extract on the physicochemical, microbiological and oxidative stability of chicken patties(SPRINGER INDIA, 2019) Babiker, Elfadil E.; Al-Juhaimi, Fahad Y.; Alqah, Hesham A.; Adisa, Abdulraheem R.; Adiamo, Oladipupo Q.; Ahmed, Isam A. Mohamed; Alsawmahi, Omer N.; Ghafoor, Kashif; Özcan, Mehmet MusaThe present study investigates the effect of Acacia seed water extract (ASWE) at four levels (0, 50, 100, 150mg/100mL) in triplicate batch on the shelf-life and quality of chicken patties. Flavones, mainly (+)-catechin, were the predominant phenolic compounds in ASWE with high antioxidant activity. ASWE showed greater inhibition effects against gram-positive bacteria than gram-negative bacteria. ASWE incorporation had no significant effects on the chemical composition of chicken patties. The microbial load, and thiobarbituric acid reactive substances of chicken patties significantly decreased (P <= 0.05) and reached minimum values at 150mg/100mL but the pH decreased slightly. The cooking properties were significantly improved (P <= 0.05) at 150mg/100mL. Moreover, ASWE at high level (150mg/100mL) significantly (P <= 0.05) enhanced total phenolic content and free radical scavenging activity of chicken patties. The results showed that chicken patties with ASWE had better quality attributes compared to the unformulated. Shelf-life of chicken patties can therefore be prolonged for 15days in refrigerated storage using ASWE especially at high concentration (150mg/100mL).Öğe Effect of Argel (Solenostemma argel) leaf powder on the quality attributes of camel patties during cold storage(WILEY, 2018) Al-Juhaimi, Fahad Y.; Mohamed Ahmed, Isam A.; Adiamo, Oladipupo Q.; Adisa, Abdulraheem R.; Ghafoor, Kashif; Ozcan, Mehmet M.; Babiker, Elfadil E.The phytochemical composition and antioxidant activity of Argel leaf powder (ALP) and its effect on the quality attributes of camel patties were investigated. ALP contains substantial amounts of total phenolics (1,262.50mg GAE/100g), and anthocyanin (60.11 mu mol/g) and possesses high 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity (86.85%). The major phenolic compounds in ALP were isorhamnetin, (+)-catechin, catechol, gallic acid, and protocatechuic acid. Increasing the concentration of ALP in camel patties improved (p.05) the protein and fat contents, cooking yield, moisture and fat retention, total phenolic content, DPPH, redness (a), yellowness (b), pH, and microbiological stability, while the dimensional shrinkage, TBARS, and lightness (L) were reduced. Throughout the storage period, the ALP formulated camel patties revealed better stability of the physicochemical, oxidation, microbiological, and sensory attributes compared to nonformulated patties. Generally, the findings of this study proved the antioxidant and antimicrobial potentials of 4-6% ALP as a functional additive to preserve patties. Practical applicationsNatural herbs play an important role in preserving sensitive foods. Camel meat is highly subjected to microbial and chemical spoilage as they are rich in essential nutrients. The adverse effects of different chemical preservatives attract the consumer's attention to natural alternatives. Therefore, in order to increase the shelf life and quality characteristics of camel meat, new processing technologies and new ingredient systems that are associated with natural herbs are applied. These results showed that the potentiality of Argel powder in the development of novel healthy meat products with improved shelf life and superior product quality was high.Öğe Effect of cold-press and soxhlet extraction on fatty acids, tocopherols and sterol contents of the Moringa seed oils(ELSEVIER, 2019) Özcan, Mehmet Musa; Ghafoor, K.; Al-Juhaimi, Fahad Y.; Ahmed, Isam A. Mohamed; Babiker, E. E.The current study presents physico-chemical attributes, fatty acid, sterol and tocopherol compositions in oils obtained from Moringa seed using either cold-press or Soxhlet extraction systems. Moringa oleifera and M. peregrina seed oils, recovered using cold press (CP) and Soxhlet extraction (SE) techniques, contained substantial amount of oleic acid (75.49 and 74.62% in CP 73.83 and 71.67% in SE) showing significant (p < .05) differences. Palmitic acid contents of M. oleifera and M. peregrina oils were 9.58 and 11.74% in case of CP and 12.27 and 12.84% in SE. The alpha-tocopherol contents of M. oleifera and M. peregrina oils obtained using these two techniques were 139.61 and 137.89 mg/kg in CP and 142.74 and 151.67 mg/kg in SE systems. Stigmasterol contents of M. oleifera and M. peregrina oils obtained with cold press and Soxhlet extraction system were found as 19.62 and 17.84% to 18.54 and 15.41%, respectively. (C) 2019 SAAB. Published by Elsevier B.V. All rights reserved.Öğe Effect of different microwave power setting on quality of chia seed oil obtained in a cold press(ELSEVIER SCI LTD, 2019) Özcan, Mehmet Musa; Al-Juhaimi, Fahad Y.; Ahmed, Isam A. Mohamed; Osman, Magdi A.; Gassem, Mustafa A.This study was conducted to investigate the impacts of microwave heating treatments at different powers (0, 180, 360, 540, 720 and 900Watts) on the quality attributes of chia seed oil. Linoleic acid contents of the chia seed oil heated in microwave oven changed between 19.21% (900 W) and 21.17% (control), respectively (p < 0.05). Linolenic acid contents of heated chia seed oils varied between 66.84% (900 W) and 68.71% (control). alpha-Tocopherol and beta-tocopherol contents of the chia oil samples varied between 47.71 mg/100 g (900 W) and 51.17 mg/100 g (control) to 62.58 mg/100 g (900 W) and 67.81 mg/100 g (control), respectively. While caffeic acid contents of the oils change between 0.27 mg/g (900 W) and 3.84 mg/g (control), rosmarinic acid contents of chia seed oils were found between 1.32 mg/g (900 W) and 3.17 mg/g (control). Results reflect a change in the chemical structures of the chia oil. Overall, much care should be taken when roasting chia seeds in microwave to avoid lossess in the bioactive components of chia oil.Öğe The effect of heat treatment on phenolic compounds and fatty acid composition of Brazilian nut and hazelnut(SPRINGER INDIA, 2018) Özcan, Mehmet Musa; Al-Juhaimi, Fahad Y.; Uslu, NurhanBrazilian peanut oil content increased with oven heating (65.08%) and decreased with microwave heating process (61.00%). While the phenolic content of untreated Brazilian nut was the highest of 68.97 mg GAE/100 g. Hazelnut (Sivri) contained the highest antioxidant activity (86.52%, untreated). Results reflected significantly differences between the antioxidant effect and total phenol contents of Brazilian nut and hazelnut (Sivri) kernels heated in the oven and microwave. Microwave heating caused a decrease in antioxidant activity of hazelnut. Gallic acid, 3,4-dihydroxybenzoic acid and (+)- and catechin were the main phenolic compounds of raw Brazilian nut with the value of 5.33, 4.33 and 4.88 mg/100 g, respectively, while the dominant phenolics of raw hazelnut (Sivri) kernels were gallic acid (4.81 mg/100 g), 3,4-dihydroxybenzoic acid (4.61 mg/100 g), (+)-catechin (6.96 mg/100 g) and 1,2-dihydroxybenzene (4.14 mg/100 g). Both conventional and microwave heating caused minor reduction in phenolic compounds. The main fatty acids of Brazilian nut oil were linoleic (44.39-48.18%), oleic (27.74-31.74%), palmitic (13.09-13.70%) and stearic (8.20-8.91%) acids, while the dominant fatty acids of hazelnut (Sivri) oil were oleic acid (80.84%), respectively. The heating process caused noticeable change in fatty acid compositions of both nut oils.Öğe The effect of Heights on Chemical Composition of Essential Oil of Bitter Fennel (Foeniculum vulgare subsp piperitum) fruits(TAYLOR & FRANCIS LTD, 2016) Figueredo, Guilles; Özcan, Mehmet Musa; Al-Juhaimi, Fahad Y.; Chalchat, Jean Claude; Özcan, Mustafa Mete; Chalard, PierreThe essential oils of fruit of Foeniculum vulgare subsp. piperitum (Apiaceae) growing wild in South Anatolia were extracted by hydrodistillation, and analysed by GC and GC-MS. The percentage yields of the essential oils from fruits of bitter fennel harvested in different heights were 2.66 %, 2.0 % and 1.66 %, respectively. The major constituents varied depending on harvest years. The major constituents of bitter fennel fruit were methyl chavicol (estragol), fenchone and limonene. Methyl chavicol contents of oil changed between 50.2 % (600 m height) to 69.2 % (1600 m height). Fenchone contents of samples varied between 6.5 % and 32.8 %. The highest fenchone content was established at the level of 600 m height. While limonene contents of oil were found as 7.1 % and 8.2 % for 600 m and 1600 m heights, respectively, it was determined as 0.37 % for sea level.Öğe Effect of location on some physico-chemical properties of prickly pear (Opuntia ficus-indica L.) fruit and seeds(WILEY, 2019) Belviranlı, Büşra; Al-Juhaimi, Fahad Y.; Özcan, Mehmet Musa; Ghafoor, Kashif; Babiker, Elfadil E.; Alsawmahi, Omer N.Total phenolics, beta-carotene, and ascorbic acid contents of cactus fruits varied between 490.74 and 932.87 mg/100 g, 40.93 and 130.76 mu g/kg, and 124.82 and 240.25 mg/kg, respectively. K and Ca values of prickly pear fruits changed between 1,908.10 and 3,981.90 mg/kg, and 136.79 and 1,224 mg/kg, respectively. Amounts of gallic acid, 3,4-dihydroxybenzoic acid, catechin, 1,2-dihydroxybenzene, syringic acid contents of prickly pear fruit pulps ranged from 0.86 to 166.02 mg/kg, 2.17 to 4.75 mg/kg, 3.29 to 15.55 mg/kg, and 1.63 to 14.14 mg/kg, respectively. Palmitic, stearic, oleic, and linoleic acids values of seed oils changed between 11.22 and 11.77%, 2.97 and 3.23%, 13.61 and 15.46%, and 60.94 and 63.38%, respectively. Effect of location on seed oil, brix(o), saccharose, raffinose, total phenolic content, beta-carotene, ascorbic acid values of prickly pear fruits and oleic acid, linoleic acid, erusic acid contents of seed oils is significant in p Prickly pears grown in limited quantities in Turkey can be used as fresh fruit, juice, jam, and marmalade due to rich in total phenol, phenolic constituents, mineral contents, and antioxidant activity. Because, 3,4-dihydroxybenzoic acid, 1,2-Dihydroxybenzene, gallic acid, catechin, quercetin, resveratrol, isorhamnetinreadily absorbable carbohydrates, minerals, vitamin C, and soluble fibers are main components of prickly pear fruits. Their seeds considered as waste material during fruit processing can be used as industrial oil due to fatty acid compositions. Prickly pear fruits due to mineral contents can provide tonic effect.Öğe Effect of soxhlet and cold press extractions on the physico-chemical characteristics of roasted and non-roasted chia seed oils(SPRINGER, 2019) Özcan, Mehmet Musa; Al-Juhaimi, Fahad Y.; Ahmed, Isam A. Mohamed; Osman, Magdi A.; Gassem, Mustafa A.While peroxide values of roasted and non-roasted chia seed oils obtained by cold press changed between 3.65 (non-roasted) and 14.12 meqO(2)/kg (roasted), peroxide values of chia seed oils extracted by Soxhlet extraction system were determined between 2.17 (non-roasted) and 8.53 meqO(2)/kg (roasted). Total wax contents of chia seed oils ranged between 56.74mg/kg (roasted seed oil obtained by cold press system) to 138.87mg/kg (non-roasted seed oil extracted by Soxhlet extraction). The linolenic acid contents of roasted and non-roasted chia oils obtained by cold press and Soxhlet extraction systems varied between 66.24 and 67.84% to 64.98 and 66.75%, respectively. +-Tocopherols contents of roasted and non-roasted chia seed oils from cold press and Soxhlet extraction systems were determined between 901.6 and 917.3mg/kg and 795.6 to 857.1mg/kg, respectively. The rosmarinic acid contents of non-roasted and roasted chia seed oils obtained by cold press system decreased from 2.17 to 1.28mg/g (p<0.05), while oil extracted from Soxhlet method showed slight increase from 2.67 to 2.92mg/g in non-roasted and roasted seeds respectively. This study revealed that roasting and extraction methods had significant effects on the micro constituents of oil from chia seeds. Due to these properties cold presses and non-roasted can be recommended.Öğe Effect of traditional processing on the nutritional quality and in vivo biological value of samh (Mesembryanthemum forsskalei Hochst) flour(JAPAN OIL CHEMISTS SOC, 2019) Alderaywsh, Fahad; Osman, Magdi A.; Al-Juhaimi, Fahad Y.; Gassem, Mustafa A.; Al-Maiman, Salah A.; Adiamo, Oladipupo Q.; Özcan, Mehmet Musa; Ahmed, Isam A. MohamedRoasting improved the determined protein and carbohydrate content of the flour compared to raw flour (p < 0.05). Baking enhanced the determined moisture and ash content of the flour compared to all treatments (p < 0.05). Similar amino acid content was found in both raw and treated flours with glutamic acid, glycine, arginine, and aspartic acid being predominant. Cooking reduced the total aromatic and nonessential amino acid content whereas roasting reduced the total essential amino acid content of samh flour. All treatments significantly (p < 0.05) decreased the antinutritional factors compared to untreated raw flour. Baking decreased the trypsin inhibitor activity by almost 98.7% whereas cooking reduced phytate and tannin content by 38.5% and 10.8, respectively. Roasting and baking significantly (p < 0.05) improved the in vitro protein digestibility of the flour. In vivo, the true faecal nitrogen digestibility of rats was significantly (p < 0.05) enhanced by all treatments. Baking and cooking increased (p < 0.05) the net protein utilization and biological value of the flour. Overall, the treatments improved the nutritional quality of samh flour.Öğe Effect of various food processing and handling methods on preservation of natural antioxidants in fruits and vegetables(SPRINGER INDIA, 2018) Al-Juhaimi, Fahad Y.; Ghafoor, Kashif; Özcan, Mehmet Musa; Jahurul, M. H. A.; Babiker, Elfadil E.; Jinap, S.; Sahena, F.; Sharifudin, M. S.; Zaidul, I. S. M.Bioactive compounds from plant sources are generally categorized as natural antioxidants with well-known health benefits. The health-promoting characteristics of natural antioxidants include anti-inflammatory, anti-diabetic, and hepatic effects as well as free radical scavenging. Herein, a comprehensive and comparative review are presented about the effects of conventional (thermal and mechanical) and relatively new (non-thermal) processing methods on phytochemicals and discussed the importance of implementing the use of those methods that could be of very helpful retaining the quality of the bioactive compounds in plant-based foods. Plant-based foods rich in phenolics, vitamin C, carotenoids, and other compounds undergo a range of processing operations before they are consumed. Most of these methods involve thermal treatments of fruits, stems, leaves, and roots. These techniques have varying effects on bioactive compounds and their activities, and the magnitude of these effects depends on process parameters such as temperature, time, and the food matrix. Thermal processing can be detrimental to bioactive compounds while nonthermal procedures may not cause significant deterioration of important health-promoting phytochemicals and in some cases can improve their bio-activity and bio-availability. The detrimental effects of conventional processing on the quality of natural antioxidants have been compared to the effects of innovative nonthermal food treatments such as gamma and ultraviolet irradiation, ultraviolet light, pulsed electric fields, and high hydrostatic pressure.Öğe Effects of cold-press and soxhlet extraction systems on antioxidant activity, total phenol contents, fatty acids, and tocopherol contents of walnut kernel oils(JAPAN OIL CHEMISTS SOC, 2019) Ahmed, Isam A. Mohamed; Al-Juhaimi, Fahad Y.; Özcan, Mehmet Musa; Osman, Magdi A.; Gassem, Mustafa A.; Salih, Hesham A. A.In this study, physico-chemical properties, fatty acid composition, and tocopherol contents of several walnut kernel oils obtained through cold-press and Soxhlet extractions were investigated. The acidity, peroxide, and unsaponifiable matter of oil samples extracted in the Soxhlet system were found higher. Total phenol contents of the oils obtained in cold press and Soxhlet extraction systems were 121.9 mg GAE/100g (Kaman-2) and 154.6 mg GAE/ 100g (Buyukoba), and between 135.9 mg GAE/100g (Kaman-2) and 163.8 mg GAE/100g (Buyukoba), respectively (p < 0.05). In addition, antioxidant activity valuesof walnut oils obtained in cold press and Soxhlet extractions varied between 17.3% (Kaman-2) and 19.7% (Kaman-5), and between 18.4% (Kaman-2) and 23.8% (Buyukoba), respectively (p < 0.05). Linoleic acid contents of the oil samples extracted in cold-press varied between 55.19% (Kaman-5) and 56.71% (Kaman-2), while that extracted from Soxhlet extraction system varied between 54.47% (Kaman-2) and 55.93% (Buyukoba). gamma-Tocopherol contents of walnut oils extracted in cold press and Soxhlet extraction ranged between 9.41 mg/100g (Buyukoba) and 10.83 mg/100g (Kaman-2), and 8.76 mg/100g (Kaman-5) and 9.33 mg/100g (Kaman-2), respectively, and were statistically significant (p < 0.05).Öğe Fatty acid composition and tocopherol profiles of safflower (Carthamus tinctorius L.) seed oils(TAYLOR & FRANCIS LTD, 2015) Matthaus, B.; Özcan, Mehmet Musa; Al-Juhaimi, Fahad Y.The oil contents of safflower seeds ranged from 23.08% to 36.51%. The major fatty acid of safflower oil is linoleic acid, which accounted for 55.1-77.0% in oils, with a mean value of 70.66%. Three types of tocopherols were found in safflower oil in various amount alpha-tocopherol, beta-tocopherol and gamma-tocopherol, ranged from 46.05 to 70.93mg/100g, 0.85 to 2.16mg/100g and trace amount to 0.45mg/100g oils, respectively. This research shows that both fatty acid and tocopherol contents differ significantly among the safflowers.Öğe Influence of storage and oasting on the quality properties of kernel and oils of raw and roasted peanuts(JAPAN OIL CHEMISTS SOC, 2018) Al-Juhaimi, Fahad Y.; Ghafoor, Kashif; Babiker, Elfadil E.; Özcan, Mehmet Musa; Aadiamo, Oladipupu Q.; Alsawmahi, Omer N.The changes in chemical properties of the peanut varieties (NC-7 and COM) in the raw and roasted forms stored at 30 degrees C for 8 months were monitored. Acidity and peroxide values of raw and roasted NC-7 and COM kernel oils increased during storage. The unsaturated fatty acids such as oleic, linoleic acids of roasted peanut oils gradually decreased during storage. While the oleic acid contents of raw NC-7 oil changed 46.14% (month 0) and 43.14% (month 8), the oleic acid contents of roasted NC-7 kernel oils varied between 42.38% (month 8) and 45.61% (month 0) during storage. In addition, while the oleic acid contents of raw COM kernel oil decreased from 49.87% (month 0) to 46.09% (month 7), the oleic acid contents of roasted COM kernel oil decreased from 48.88% (month 0) to 45.24% (month 8) during storage. The highest linoleic acid were found in the initial periods of storage for raw and roasted NC-7 and COM oils. In addition, the alpha-tocopherol contents of both raw and roasted peanut kernel oils changed between 20.38 mg/100 g (0.month) and 17.58 mg/100 g (month 8) to 21.45 mg/100g (month 0) and 18.64 mg/100 g (month 8) during storage, respectively. Significant variations were observed in tocopherol contents of peanut varieties due to processing.Öğe Inhibitory effect of some plant essential oils on growth of Aspergillus niger, Aspergillus oryzae, Mucor pusillus and Fusarium oxysporum(ELSEVIER, 2017) Ferdes, M.; Al-Juhaimi, Fahad Y.; Özcan, Mehmet Musa; Ghafoor, K.The antifungal effects of sage, rosemary, anise, quinoa and savory essential oils against mycelium growth of Aspergillus niger, Aspergillus oryza, Mucor pusillus and Fusariumoxysporumwere determined in in vitro conditions. While the 10 mu g/ml of savory essential oil showed inhibitory effect against tested fungi, anise oilwas ineffective at the same concentration. The essential oils of savory and sage showed a great inhibitor effects against M. pusillus when compared with other essential oils. The 20 mu g/ml level of savory oil had effective on Aspergillus niger, Aspergillus oryza, Mucor pusillus and Fusarium oxysporum. The essential oils of sage and rosemary were effective on A. oryza, A. niger and Fusarium oxysporumat ligh concentrations (10 and 20 mu g/ml). The essential oil of quinoa showed an antifungal effect at both concentrations (10 and 20 mu g/ml) on all tested fungi. All the tested essential oils showed inhibitory effect against all the selected fungi. (C) 2017 SAAB. Published by Elsevier B.V. All rights reserved.