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Öğe Amino Acid and Sugar Contents of Wild and Cultivated Carob (Ceratonia siliqua) Pods Collected in Different Harvest Periods(SPRINGER, 2017) Şimşek, Şenay; Özcan, Mehmet Musa; Al Juhaimi, Fahad; ElBabiker, Elfadil; Ghafoor, Kashif[Abstract not Available]Öğe The Antibacterial Activity of Essential Oil of Oregano (Origanum Vulgare L.)(WFL PUBL, 2010) Özkalp, Birol; Sevgi, Fatih; Özcan, Mustafa; Özcan, Mehmet MusaAntibacterial activities of the essential oil of oregano (Origanum vulgare L.) and ampicillin on Escherichia coli RSKK 340, Klebsiella pneumoniae RSKK 06017, Pseudomonas aeruginosa RSKK 06021, Salmonella enteritidis RSKK 96046, Streptococcus pyogones RSKK 413/214, Bacillus cereus RSKK 1122, Staphylococcus aureus RSKK 96090 and methicilline-resistant Staphylococcus aureus (MRSA) were determined. The minimum inhibitory concentration (MIC) for oregano oil against various bacteria varied: while M.luteus (16 mu g/ml) and B.cereus (32 mu g/ml) were susceptible to oregano oil, the others exhibited partly resistance. Except MRSA S. aureus (250 mu g/ml), ampicillin had more effect on K. pneumoniae (128 mu g/ml) and C. albicans (128 mu g/ml) than oregano oil, but very low concentrations of the essential oil were sufficient to prevent microbial growth. Of the bacteria tested, Micrococcus luteus and Bacillus cereus proved to be most susceptible to oregano oil. Oregano oil possessed strong antimicrobial activity compared with the antibiotic. Gram-positive bacteria were more sensitive to the antimicrobial agent in spice than Gram-negative ones.Öğe Antibacterial Activity of Pollen and Propolis Extracts(WFL PUBL, 2010) Özkalp, Birol; Özcan, Mehmet MusaThe antimicrobial activities of different concentrations of pollen and propolis extracts were determined against nine food-borne pathogens (Streptococcus salivarius RSHE 605, Listeria monocytogenes NCTC 5348, Staphylococcus aureus ATCC 25923, Salmonella enteritidis ATCC 13076, Staphylococcus pneumoniae ATCC 10015, Escherichia colt ATCC 25922, Klebsiella pneumoniae NCTC 5049, Pseudomonas aeruginosa ATCC 27853 and Bacillus anthracis) in model systems. The extracts and antibiotic discs (ciprofloxacin, cefaperazon sulbaktam, penicilline, amikacine, cefepime, gentamicine, ceftriaxone) exhibited inhibitory effect at the varying levels against tested bacteria. Among the tested bacteria, L. monocytogenes and P aeruginosa were the most sensitive ones to 50 ppm concentrations of both extracts. The highest effect concentrations towards B. anthracis were 600 ppm dose of pollen and propolis extracts. The 400 and 600 ppm levels of propolis extracts on L. monocytogenes NCTC 5348 exhibited similar antimicrobial effects compared with amikacine, gentamicine and ccftriaxone antibiotics. Also, 600 ppm concentration of propolis had higher effect against B. anthracis compared with cefepime, gentamicine and ceftriaxone antibiotics. The inhibitory effect of propolis extract was found to be higher than that of pollen against tested bacteria. Propol is especially appears to be promising in this respect.Öğe Antibacterial effect of myrtle (Myrtus communis L.) leaves extract on microorganisms(M H SCHAPER GMBH CO KG, 2015) Özcan, Mehmet Musa; Uyar, Bekir; Ünver, AhmetThe antibacterial activity of the extracts of myrtle black and white leaves was determined. By the increase of the concentration of the extracts, antibacterial activity also increased. The most effective extract was the methanol extract of the leaves of the white myrtle against S. aureus. While, effect of ethyl acetate extracts of white and black myrtle leaves were very low to S. aureus and P. vulgaris, methanol extracts of the leaves of the black myrtle inhibited the growth of it. Acetone extracts of white and black myrtle leaves were very effective against P. mirabilis. B. cereus was most resistant to ethyl acetate extract of myrtle leaves, but the reduction effect of methanol extract was very high.Öğe Antibacterial effects of Istanbul thyme (Origanum vulgare L. subsp hirtum (Link) letsw.) and Karabas thyme (Thymbra spicata L. var. spicata) extracts(M H SCHAPER GMBH CO KG, 2015) Özcan, Mehmet Musa; Özkan, Gülcan; Sağdıç, OsmanThe most sensitive bacteria against extract concentrations were Bacillus subtilis, Bacillus cereus and Mycobacterium smegmatis. In addition, E. coli O157:H7 shown resistance against effect of Istanbul thyme extract. While the most sensitive microorganism against Karabas thyme extract had Mycobacterium smegmatis, Yersiniae enterocolitica shown strong resistance. The inhibitory effect of extracts changed depending on concentrations. Most sensitive bacteria against extract concentration had Gram (+) bacteria that Mycobacterium smegmatis, Bacillus subtilis and Bacillus cereus. The most resistant bacteria is Gram (-) bacteria, E. coli O157: H7, Klebsiella pneumoniae, Staphylococcus aureus and Yersiniae enterocolitica were found. Generally, antibacterial effects of Istanbul extracts obtained by different application and extraction systems were found partly high compared with effects of Karabas thyme extracts.Öğe Antimycotic activity of methanol extracts of sage (Salvia officinalis L.), Laurel (Laurus Nobilis L.) and Thyme (Thymbra spicata L.)(HAR KRISHAN BHALLA & SONS, 2008) Ünver, Ahmet; Arslan, Derya; Çetinkaya, Zafer; Özcan, Mehmet MusaInhibitory effects of methanol-water (90: 10; v/v) extract from sage (Salvia officinalis L.), laurel (Laurus nobilis L.) and thyme (Thymbra spicata L.) were tested in vitro on clinical isolates of eleven species of yeasts (C. krusei, C. clus, Rhodotorula rubra, C. albicans 10039, C. tropicalis, C. glabrata 70164, C. parasilosis, C. insane, C. rhodotonla, C. holmii and C. glabrata 13b). Preliminary experiment was carried out in vitro using the disc diffusion method to investigate antimycotic activity of the sage, laurel and thyme extracts. Thyme methanol extract showed very high antimycotic activity against all tested yeasts. Effect of laurel extract was as good as thyme extract for C. tropicalis at 40 ppm level. Generally, sage had no effect on the tested yeasts. Methanol extracts of thyme and laurel may be useful tools to control the yeasts growth.Öğe Antioxidant Activity of Ribes multiflorum Kit. ex Roem. & Schult (blackcurrant) Extract(TAYLOR & FRANCIS LTD, 2009) Serteser, Ahmet; Kargıoğlu, Mustafa; Gök, Veli; Bağcı, Yavuz; Özcan, Mehmet MusaIn this study, the antioxidant contents of Ribes multflorum Kit. Ex Roem. & Schult (black currant) which was grown in Emir and Kumalar mountains in Afyonkarahisar were investigated. Ribes multiflorum Kit. Ex Roem. & Schult is found on 1700 m at Emir Mountain in Dumluca, on 1400 and 1600 m at Kumalar Mountains in Basoren. Antioxidant activities of samples were determined by free radical scavenging effect, chelating activity with Fe (+2) and H2O2 inhibition methods. The lower EC50 value, the higher antioxidant power. In the presence of metal ions, super reactive hydroxyl radical may be formed by Fenton reaction. The findings obtained in the present work indicated that the Ribes multiflorum are potential source of natural antioxidant. Their antioxidant properties probably depend on concentration of sample.Öğe Antioxidant activity of some medicinal plant extracts on oxidation of olive oil(SPRINGER, 2017) Özkan, Gülcan; Özcan, Mehmet MusaTotal phenolic contents, free radical scavenging activities and antioxidant capacities of Origanum onites extracts prepared using different methods were determined. Total phenolics ranged from 79.93 to 141.80 mg GAE/g, radical scavenging activities (IC50) were between 624.83 and 1080.16 mu g/ml and antioxidant capacities ranged from 107.31 to 161.71 mg AAE/g extract. The highest total phenolics and antioxidant activity were found in aceton:water:acetic acid (95:4.5:0.5) extract of O. onites using ultra-sonication bath. Total phenolic contents, free radical scavenging activities and antioxidant capacities of Satureja thymbra extracts were between 84.32 and 104.27 mg GAE/g, IC50 = 370.46 and 697.29 mu g/ml, 104.03 and 123.34 mg AAE/g extract, respectively. In terms of the highest total phenolics and antioxidant properties, extracts of Satureja thymbra prepared using ethanol:water:acetic acid (95:4.5:0.5) Soxhlet extraction showed the highest values. Butylated hydroxytoluene (BHT) and extracts (600 and 1200 ppm O. onites and S. thymbra) exhibited a strong antioxidant activity in olive oil. The highest value of peroxide is found in butylated hydroxy anisole (BHA) containing oils, when monitored from 0 to 28 days and values were in order of 2.98-29.59 and 2.98-29.64 meq O-2/kg oil. Absorbance value at the 0th day of all samples was 1.68 and increased till 28th Day. Acid values of oils including BHA, BHT, 600 and 1200 ppm O. onites extract and 600 ppm S. thymbra extract were found as 1.89 mg KOH/g at 28th day for second control.Öğe Antioxidant activity, phenolic compounds and mineral contents of boiled juices(M H SCHAPER GMBH CO KG, 2017) Al Juhaimi, Fahad; Özcan, Mehmet MusaWhile antioxidant activity values of boiled juice (pekmez) samples varied between 89.26 % (date) and 99.07 % (pomegranate), total phenolic contents ranged from 103.32 mg GAE/100 g to 149.56 mg GAE/100 g (pomegranate). Gallic acid contents of pekmez samples were determined between 1.16 mg/100 g (carob) and 4.23 mg/100 g (pomegranate). Also, pekmez samples contained 4.13 mg/100 g (carob) 9.51 mg/100 g (pomegranate) (+)-catechin. K contents of boiled juice samples varied from 131.48 mg/Kg (Date) to 10832.63 mg/Kg (Carob). Fe contents of boiled juice samples varied between 15.98 mg/Kg (Pomegranate) and 51.43 mg/Kg (Mulberry). The highest Zn content was found in Pomegranate boiled juice (9.90 mg/Kg). The lowest Zn content was determined in mulberry (black) pekmez (0.77 mg/Kg).Öğe Antioxidant and antifungal activity of some aromatic plant extracts(ACADEMIC JOURNALS, 2011) Özcan, Mehmet Musa; Al Juhaimi, Fahad Y.In this study, the antioxidant and antifungal activities of extracts of sage, rosemary, basil, laurel, pickling herb and summer savory were established. Total yields, radical scavenging activity and the antioxidant capacities of the extracts were determined. The free radical scavenging activities of extract was established as 42.3 +/- 3.1 to 78.9 +/- 7.1%, respectively. The antioxidant capacities of extracts were found between 167.4 +/- 12.3 to 358.7 +/- 21.3 mg/g extract. This extract was investigated for antifungal activity by using paper disc method against five fungi (Aspergillus niger, Alternaria alternate and Aspergillus parasiticus NRRL 2999). The 0.5% level of summer savory extract showed 100% inhibition till the 7th day of incubation. Statistical differences within fungi were important at p<0.05. The extract was partly effective against all the fungi used in experiment.Öğe Antioxidant effect of essential oils of rosemary, clove and cinnamon on hazelnut and poppy oils(ELSEVIER SCI LTD, 2011) Özcan, Mehmet Musa; Arslan, DeryaAntioxidant effects of essential oils from rosemary (Rosmarinus officinalis), clove (Syzygium aromaticum) and cinnamon (Cinnamomum zeylanicum) were determined on hazelnut and poppy oils. These essential oils were added to the oils at concentrations of 0.25% and 0.5%. Butylated hydroxyanisole (BHA) at 0.02% level served as standard besides the control groups for comparison. The samples were stored 50 degrees C in darkness for 14 days. The antioxidant activity of the essential oils was determined by measuring peroxide values (meq O(2)/kg oil) at regular intervals. On the basis of peroxide value assay, the essential oils showed stronger antioxidant effect when compared to control groups. BHA was more effective than the essential oils, whilst it exhibited no antioxidative effect on the first few days of storage. Amongst the investigated essential oils, the cinnamon oil was the most effective on retarding lipid oxidation of crude oils, which was followed by clove and rosemary oils. (C) 2011 Published by Elsevier Ltd.Öğe Antioxidant effect of mint, laurel and myrtle leaves essential oils on pomegranate kernel, poppy, grape and linseed oils(ELSEVIER SCI LTD, 2012) İnan, Özlem; Özcan, Mehmet Musa; Al Juhaimi, Fahad Y.Antioxidant effects of mint (Mentha spicata L), laurel (Laurus nobilis L) and myrtle leaf (Myrtus communis L) essential oils on pomegranate kernel, poppy, grape and linseed oils were determined. Essential oils at the level of 0.01% and 0.05% were added into the oils and stored in a drying oven (60 degrees C) for 6 weeks and analyzed for peroxide value, free acidity and viscosity biweekly. Both of concentrations of the essential oils were found to be preventing the increase of viscosity of the oils in comparison to the control samples. On the other hand, an important increase was observed in both the peroxide and acidity values during the experiment period. The levels of 0.05% of essential oils were found to save the values lower than levels of 0.01% and control samples. In conclusion, use of essential oils improved the oxidative stability and fastened the viscosity values of the edible oils. (C) 2012 Elsevier Ltd. All rights reserved.Öğe Antioxidant potential, mineral contents and fatty acid composition of rose, blackberry and redberry fruits(AGRIMEDIA GMBH, 2016) Al Juhaimi, Fahad; Ghafoor, Kashif; Babiker, Elfadil E.; Uslu, Nurhan; Özcan, Mehmet MusaStudeis relating to finding out such plant materials and fruits containing natural antioxidants and high quality nutrients have been increasing in recent years. Rose, blackberry and redberry fruits were evaluated for total phenol, flavonoids, antioxidant activity, phenolic compounds, minerals and fatty acids composition. The total phenol contents of fruits varied between 112 mg GAE/ioog (ripened rose seed (RS)) and 702 mg GAE/loo g (redberry); flavonoid ranged from 25 (ripened RS) to 184 (redberry). The Redberry (81.64%) and blackberry (76.28%) fruits showed highest free radical scavenging abilities. Among minerals, P contents of samples ranged from 615.80 mg/Kg (blackberry) to 2208.08 mg/kg (redberry), K contents were found between 193.27 mg/loog (raw RS) and 18342.12 mg/kg (raw RF). Gallic acid contents significantly varied (p < 0.05) and ranged from 0.36 mg/kg in redberry to 4.97 mg/kg in blackberry. Oleic acid contents of oil samples were 12.29% (ripened RS) and 59.5o% (raw rose fruit (RF)). Lin oleic acid contents of samples ranged between 19.66% (raw RE) and 48.77% (raw RS). Rose, blackberry and raspberry fruits can serve as potential nutrient and natural antioxidant sources that can be utilized for nutraceutical and functional foods development.Öğe Antioxidant Properties and Total Phenolic Content of Two Solvent Extraction Extracts of Some Plants Belong to Labiatae Family(ASIAN JOURNAL OF CHEMISTRY, 2013) Al Juhaimi, Fahad Y.; Sağlam, Coşkun; Özcan, Mehmet MusaIn vitro radical scavenging activity and the total phenolic content (Folin-Ciocalteu method) of two solvents (methanolic and ethyl acetate) extracts of some plants grown in Turkey were studied by using 1,1-diphenyl-2-picrylhydrazyl (DPPH) scavenging assay. Although the total phenolic content of the ethyl acetate extract of R. officinalis (41.8 mg GAE/g dry weight) is higher than that of L. angustifolia (12.7 mg GAE/g dry weight), the corresponding radical scavenging activity of R. officinalis (19.3%) is higher than those of other plants. The total phenolic content of the methanolic extract of R. officinalis (34.8 mg GAE/g dry weight) is higher than those of other plant species. At the same time, its corresponding antioxidant activity is higher (21.8%). It was established that there was positive linear correlation between radical scavenging activity and total phenolic contents.Öğe Antioxidant properties of some plants growing wild in Turkey(CONSEJO SUPERIOR INVESTIGACIONES CIENTIFICAS-CSIC, 2009) Serteser, A.; Kargıoğlu, M.; Gok, V.; Bağcı, Yavuz; Özcan, Mehmet Musa; Arslan, D.In this study, the antioxidant activity of 50% aqueous methanol extracts of 38 plants growing in the Afyonkarahisar province of Turkey were evaluated by various antioxidant assay, including free radical scavenging, hydrogen peroxide (H2O2) scavenging and metal (Fe2+) chelating activities. The methanolic fruit extracts of the Cornus and Morus species (H2O2 and DPPH scavenging activities, Fe2+ chelating activity) and the methanolic leaf extracts of the Mentha species (DPPH scavenging activities) examined in the assay showed the strongest activities. These antioxidant properties depended on the concentration of samples.Öğe Antioxidant properties, total phenolic content of two solvent extraction extracts of some plants belong to labiatae family(2013) Al Juhaimi, Fahad Y.; Sağlam, Coşkun; Özcan, Mehmet MusaIn vitro radical scavenging activity and the total phenolic content (Folin-Ciocalteu method) of two solvents (methanolic and ethyl acetate) extracts of some plants grown in Turkey were studied by using 1,1-diphenyl-2- picrylhydrazyl (DPPH) scavenging assay. Although the total phenolic content of the ethyl acetate extract of R. officinalis (41.8 mg GAE/g dry weight) is higher than that of L. angustifolia 12.7 mg GAE/g dry weight), the corresponding radical scavenging activity of R. officinalis (19.3 %) is higher than those of other plants. The total phenolic content of the methanolic extract of R. officinalis (34.8 mg GAE/g dry weight) is higher than those of other plant species. At the same time, its corresponding antioxidant activity is higher (21.8 %). It was established that there was positive linear correlation between radical scavenging activity and total phenolic contents.Öğe Application of fuzzy expert system approach on prediction of some quality characteristics of grape juice concentrate (Pekmez) after different heat treatments(SPRINGER INDIA, 2011) İnan, Özlem; Arslan, Derya; Taşdemir, Şakir; Özcan, Mehmet MusaEffects of heat treatment on physicochemical characteristics and sensory properties of different fruit juice concentrates (pekmez) were studied. Apricot pekmez had the highest viscosity followed by mulberry and date pekmez. Apricot and date pekmez had higher scores for odour, taste and consistency than others. Hydroxymethyl furfural concentration of all pekmez samples increased after heat treatments. Samples heated at 75A degrees C showed highest L* values while at 65A degrees C the lowest mean L* values. L* values of all pekmez samples were similar while carob Pekmez had higher L* values. Also a development of the Fuzzy Expert System (FES) was made for prediction. Using the experimental values, FES model of the system was designed. Accordance was found with experimental and FES results when compared statistically. This study provides advantage for prediction possibility of unknown sub-values', which were not experimentally studied.Öğe Aroma Profile of Origanum Vulgare L. Subsp. Viride (Boiss.) Hayek, Satureja Hortensis L. And Thymbra Sintenisii Bornm. & Aznav. Subsp. Isaurica P.h. Davis Used as Condiment and Herbal Tea in Turkey(2005) Bağcı, Yavuz; Saadia, Zrira; Özcan, Mehmet MusaThe constituents of essential oils isolated by hydrodistillation of the aerial of Origanum vulgare L. subsp. viride (Boiss.) Hayek, Satureja hortensis L. and Thymbra sintenisii Bornm. & Aznav. subsp. isaurica P.H. Davis from Turkey have been determined by GC and GC-MS. A total of 15, 19 and 20 components were identified accounting for 78.5%, 99.9% and 96.6% of the oils of Origanum vulgare L. subsp. viride (Boiss.) Hayek, Satureja hortensis L. and Thymbra sintenisii Bornm. & Aznav. subsp. isaurica P.H. Davis, respectively. The oil of O.vulgare contained, as main components, o-cymene (35.1%), linalyl propanoate (8.1%), linalool (6.9%), ?-myrcene (5.7%), ?-pinene (5.1%) and limonene (4.8%). Major compounds in the volatile oil of S. hortensis were carvacrol (21.9%), terpinolene (20.1%), p-cymene (18.1%), thymol (11.4%), aromadendrene (6.4%), ?-caryophyllene (4.5%) and ?-caryophyllene (4.2%). The major constituents of the essential oil of T. sintenisii were o-cymene(34.7%), caryophyllene (14.2%), aromadendrene (8.0%), carvacrol (7.2%), borneol (6.8%) and thymol (6.7%). The essential oil of S. hortensis was characterized by its high content of carvacrol (21.9%), whereas o-cymene was the most important constituent of the essential oil of O. vulgare and T.sintenisii (35.1% and 34.7% respectively).Öğe ASSESSMENT OF HEAVY METAL ACCUMULATION IN SOME EDIBLE PLANTS AND MEDIA SAMPLES IN THE VICINITY OF SEYDISEHIR ALUMINUM PLANT, KONYA(PARLAR SCIENTIFIC PUBLICATIONS (P S P), 2013) Sağlam, Coşkun; Er, Fatih; Çelebi, Muhittin; Gümüşcü, Ahmet; Özcan, Mehmet MusaIn this study, the concentrations of cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), nickel (Ni), manganese (Mn), lead (Pb) and zinc (Zn) in some selected nature and cultivated plants and media samples were determined by inductively-coupled plasma-atomic emission spectrometry (ICP-AES) in Seydisehir industrial area. It was found that (p<0.05) mean Fe concentration was higher in the soils, followed by Mn, Ni, Zn, Cr, Cu, Pb and Cd, on dry weight basis. In some soil samples, the concentrations of Cd, Cr and Ni exceeded the permissible limits; however, their accumulation in plants was lower due to the physical and chemical properties of the soils, which prevented their translocation to plants. Although the concentration of Mn was found within the safe limits in fruiting vegetables, it was above the recommended international standards in some leafy plant specimens. Portulaca oleracea has shown its potential as phyto-remediation species for most of the selected heavy metals in the study area.Öğe Bioactive properties and phenolic compounds in bud, sprout, and fruit of Capparis spp. plants(Blackwell Publishing Ltd, 2020) Ghafoor K.; Al Juhaimi, Fahad Y.; Özcan, Mehmet Musa; Uslu, Nurhan; Babiker, Elfadil E.; Mohamed Ahmed I.A.In this study, changes in bioactive properties and phenolic compounds of different caper parts were reported. Total phenolic contents of C. ovata and C. spinosa plants varied between 175.35 mgGAE/100 g (fruit) and 518.4 mgGAE/100 g (small bud) to 143.58 mgGAE/100 g (fruit and 597.57 mgGAE/100 g (small bud), respectively. While total flavonoid contents of C. ovata parts vary between 9.12 mg/g (fruit) and 37.22 mg/g (small bud), total flavonoid contents of C. spinosa parts changed between 7.43 mg/g (fruit) and 62.39 mg/g (small bud). Antioxidant activity values of C. ovata and C. spinosa parts varied between 53.43% (sprout) and 76.40% (medium bud) to 50.51% (fruit) and 76.65% (medium bud), respectively. While (+) catechin contents of C. ovata parts change between 22.16 mg/100 g (fruit) and 149.13 mg/100 g (small bud), (+)-catechin contents of C. spinosa parts varied between 65.50 mg/100 g (fruit) and 99.29 mg/100 (small bud). 1,2-Dihydroxybenzene contents of C. ovata ranged from 33.4 mg/100 g (fruit) to 142.41 mg/100 g (small bud) while 1,2-dihydroxybenzene contents of C. spinosa parts are found between 75.17 mg/100 g (fruit) and 127.32 mg/100 g (medium bud). Practical applications: Caper plant grows at the most countries of Africa, Asia, and South European. Capers have very important roles for beneficial natural components in the food industry. Caper buds and fruits are used for human nutrition. It is utilized to prepare salada as a culinary herb. Caper has pungent and bitter flavor, and are used as an appetizer with olives, cheese, and nuts. There are a significant increase in the interest of bioactive compounds from plant products. Curative and medicinal properties of capers are linked to the presence of bioactive compounds. © 2020 Wiley Periodicals, Inc.
