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Öğe Acanthus Hirsutus‘un Aseton Özütünün Anti?oksi?dan Özelli?kleri?ni?n Araştırılması(Selçuk Üniversitesi Fen Fakültesi, 2014) Güner, Sevilay; Zengin, Gökhan; Aktümsek, AbdurrahmanAcanthus hirsutus Anadolu geleneksel halk hekimliğinde çeşitli hastalıkların tedavisinde kullanılmaktadır. Bu çalışmada A. hirsutus’un aseton ekstraktının antioksidan özellikleri; toplam antioksidan, serbest radikal süpürme etkinliği (DPPH testi), ?-karoten/linoleik asit metodu, demir ve bakır indirgeme güçlerini içeren farklı kimyasal test sistemleri kullanılarak değerlendirilmiştir. Toplam fenolik ve flavonoid içerikler belirlenmiştir. Toplam fenolik ve flavonoid içerik sırasıyla 51.39 mgGAE/g ve 18.60 mgRE/g olarak tespit edilmiştir. DPPH yönteminde 1mg/ml konsantrasyonda %47.87 etkinlik gözlenmiştir. ?-karoten/linoleik asit test sisteminde, 1 mg/ml konsantrasyon linoleik asit oksidasyonu %66.83 oranında inhibe edilmiştir. Demir ve bakır indirgeme güçleri ise konsantrasyona bağlı bir durum sergilemektedir. Bu sonuçlar A. hirsutus’un doğal antioksidanların bir kaynağı olarak gıda ve farmakoloji endüstrilerinde kullanılabileceğini göstermektedir.Öğe Agaricus Bisporus (Lange) Sing.’un Yağ Asidi Bileşimi(1998) Aktümsek, Abdurrahman; Öztürk, Celaleddin; Kaşık, GıyasettinAgaricus bisporus’un etli kısmı, sapı, lameli ve totalinin yağ asidi bileşimleri ayrı ayrı gaz kromatografik yöntemle analizlenmiştir. A. bisporus’un tüm yağ asidi bileşimlerinde linoleik asitin yüzdesi en yüksektir. Linoleik asit yüzdesi %53.45 - 68.78 arasında değişmiştir. Yağ asidi bileşimlerinde linoleik asitten başka en yüksek yüzdeye sahip yağ asitlerinin palmitik, oleik ve stearik asitler olduğu görülmüştür.Öğe Anemik Üniversite Öğrencisi Genç Erkeklerde Ferritin, Demir ve UIBC Seviyelerinin Belirlenmesi(2002) Aktümsek, Abdurrahman; Kalyoncu, Leyla119 üniversite öğrencisi anemik genç erkeklerin serum ferritin, demir ve UIBC değerleri belirlenmiştir. Kan eritrosit, hemoglobin, hematokrit ve MCV değerleri ile serum ferritin, demir ve UIBC değerleri sırasıyla 3.59\pm0.37x106 \mul\, 10.31\pm1.44 g/dl, 30.69\pm 3.79 %, 83.84\pm9.08 fl; 78.01\pm43.63 ng/ml, 63.08\pm26.27 \mug/dl ve 285.58\pm85.53 \mug/dl'dir. incelenen kişilerin yaşları 16-26 arasında değişmiş ve yaşları ortalaması 19.36\pm2.61 olarak bulunmuştur. Serum ferritin, demir ve UIBC değerlerinin normal sınırlar içerisinde fakat suboptimal seviyelerde olduğu görülmüştür.Öğe Anthraquinone profile, antioxidant and enzyme inhibitory effect of root extracts of eight Asphodeline taxa from Turkey: can Asphodeline roots be considered as a new source of natural compounds?(TAYLOR & FRANCIS LTD, 2016) Zengin, Gökhan; Locatelli, Marcello; Ceylan, Ramazan; Aktümsek, AbdurrahmanPlant-based foods have become attractive for scientists and food producers. Beneficial effects related to their consumption as dietary supplements are due to the presence of natural occurring secondary metabolites. In this context, studies on these products are important for natural and safely food ingredients evaluation. The aim of this study was to evaluate root extract of eight Asphodeline species as antioxidants, enzyme inhibitors and phytochemical content. Spectrophotometric antioxidant and enzyme inhibitory assays were performed. Total phenolic and flavonoids contents as well as the chemical free-anthraquinones profiles were determined using routinely procedure (HPLC-PDA). Data show that Asphodeline roots can be considered as a new source of natural compounds and can be used as a valuable dietary supplement. Some differences related to biological activities can be inferred to other phytochemicals that can be considered in the future for their synergic or competitive activities.Öğe Antibacterial activities of extracts from twelve centaurea species from Turkey(INST BIOLOSKA ISTRAZIVANJA SINISA STANKOVIC, 2011) Tekeli, Yener; Zengin, Gökhan; Aktümsek, Abdurrahman; Sezgin, Mehmet; Torlak, EmrahMembers of the genus Centaurea (Asteraceae) have been used in traditional plant-based medicine. The methanol extracts of twelve Centaurea species, of which five are endemic to Turkey flora, were screened for antibacterial activity against four bacteria (Escherichia coli, Bacillus cereus, Salmonella enteritidis, Staphylococcus aureus). The antibacterial activity was evaluated by the microdilution method and the minimum inhibition concentrations (MIC) of the extracts were determined. C. cariensis subsp. microlepis exhibited an antimicrobial effect on all tested microorganisms. The extracts from eight Centaurea species (C. balsamita, C. calolepis, C. cariensis subsp. maculiceps, C. cariensis subsp. microlepis, C. kotschyi var. kotschyi, C. solstitialis subsp. solstitialis, C. urvillei subsp. urvillei and C. virgata) possessed antibacterial activity against several of the tested microorganisms.Öğe Antibacterial Activity and Composition of the Essential Oils of Eucalyptus Camaldulensis Dehn. And Myrtus Communis L. Growing in Northern Cyprus(Academic Journals, 2010) Akın, Mehtap; Aktümsek, Abdurrahman; Nostro, AntoniaWater-distilled essential oils from leaves of Eucalyptus camaldulensis Dehn. and Myrtus communis L., collected from Northern Cyprus, were analysed by GC-MS. The major constituents of the essential oil from E. camaldulensis Dehn. were ethanone (25.36%), eucalyptol (13.73%), beta-caryophyllene (11.55%) and carvacrol (9.05%). Eucalyptol (50.13%) was identified as the main constituent of the essential oil of Myrtus communis L. The other important components were linalool (12.65%), alpha-terpineol (7.57%) and limonene (4.26%). M. communis showed some activity on Gram positive and Gram negative bacteria while E. camaldulensis was found to have a low activity. The higher efficacy of M. communis was confirmed by the agar dilution method.Öğe Antioxidant Activity and Biochemical Screening of two Glycyrrhiza L. Species(SCIENCEDOMAIN INT, 2016) Çakmak, Yavuz Selim; Aktümsek, Abdurrahman; Duran, Ahmet; Çetin, ÖzlemAims: Glycyrrhiza L. is one of the most widely used plants in traditional medicine since antiquity. For the determining of the biochemical composition and antioxidant activity of methanolic extracts of two Glycyrrhiza species different parts. Study Design: In the current study, antioxidant activities, essential oils and fatty acid compositions of root and aerial parts of G. iconica and G. flavescens subsp. flavescens were examined. To measure antioxidant activities of methanol extracts, different chemical methods were carried out. Place and Duration of Study: Department of Biology, Physiology and Biochemistry Research Laboratory (December 2011-November 2012). Methodology: The antioxidant capacity tests were designed to evaluate the antioxidant activities of methanol extracts of Glycyrrhiza species tested. The extracts will be executed for their possible antioxidant activities by five different test systems namely total antioxidant capacity (phosphomolibdat assay), beta-carotene/linoleic acid test system, free radical scavenging (DPPH), ferric and cupric ion reducing power (CUPRAC). Total phenolic and flavonoid concentrations of each extract were also determined by using both Folin-Ciocalteu reagent and aluminum chloride. Results: The root of G. iconica showed the highest activity in all methods. The major components of essential oils from Glycyrrhiza species were 1-pentylcyclobutene, naphtalene, hexahydro farnesyl acetone, phytol, dimethylamine and n-hexadecanoic acid. In fatty acid profiles of these two taxa, the main fatty acids were palmitic and linoleic acids. Conclusion: Our results showed that studied parts of two Glycyrrhiza species can be used as an easily accessible source of natural antioxidants that could be important in pharmaceutical industry.Öğe Antioxidant and Enzyme Inhibitory Activities of Extracts from Wild Mushroom Species from Turkey(BEGELL HOUSE INC, 2017) Zengin, Gökhan; Üren, Mehmet Cemil; Koçak, Mehmet Sefa; Güngör, Halil; Locatelli, Marcello; Aktümsek, Abdurrahman; Sarıkürkcü, CengizThe antioxidant and inhibitory effects of methanol and aqueous extracts from Hymenogaster aromaticus, Ramaria aurea, and Rhizopogon luteolus against cholinesterase, tyrosinase, alpha-amylase, and a-glucosidase are reported here, to our knowledge for the first time. Antioxidant activities were investigated using different assays, including 2,2-diphenyl-1-picrylhydrazyl, 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid), ferric ion-reducing antioxidant power, cupric ion-reducing antioxidant capacity, phosphomolybdenum, and metal-chelating assays. In general, the highest antioxidant and enzyme-inhibitory effects were observed in methanol extracts, which had the highest concentrations of phenolics. (+)-Catechin, benzoic acid, and p-hydroxybenzoic acid were determined to be the main phenolics in H. aromaticus components both in methanol and in aqueous extracts, whereas the other 2 species present very different phenolic fingerprints, also at smaller quantities. These results suggest that these mushroom species may be considered sources of natural agents.Öğe Antioxidant capacity and fatty acid composition of different parts of Adenocarpus complicatus (Fabaceae) from Turkey(REVISTA DE BIOLOGIA TROPICAL, 2014) Berber, Adnan; Zengin, Gökhan; Aktümsek, Abdurrahman; Şanda, Murad Aydın; Uysal, TunaAdenocarpus complicatus is distributed throughout the Anatolian peninsula and is widely used for human and animal nutrition. The purpose of this work was to study the antioxidant properties and fatty acid composition of different parts of this plant (fruits and mixed materials). The species was collected from Golyuzu village of the Seydisehir district near Konya province, Turkey. Fruit and mixed parts obtained from this species were ground and a 15g sample was used to prepare methanolic extracts. Powdered plant samples were extracted with 100mL methanol in a mechanical shaker. The obtained extracts were filtered and concentrated to dryness under reduced pressure and were subsequently stored at -20 degrees C. Antioxidant components, namely total phenolic and flavonoid content, were detected for each extract using spectrophotometric methods. Antioxidant capacity was evaluated by various assays including phosphomolybdenum, DPPH free radical scavenging capacity, metal chelating activity, and ferric and cupric ion reducing power. The fatty acid profiles of plant parts were also determined by using gas chromatography. The total phenolic content of fruit (36.21mgGAE/g) was higher than that of mixed materials (13.79mgGAE/g). The methanolic extract of mixed material had higher amounts of flavonoid than fruit extract. The free radical scavenging activity of extracts was expressed as IC50 value (mu g/mL) (amount required to inhibit DPPH radical formation by 50%). The lower IC50 value reflects better free radical scavenging action. The radical scavenging activity of the samples was compared with BHT, it showed the mixed material to be almost two times more potent than the fruit extract. However, BHT is an excellent free radical scavenger with an IC50 of 34.061 mu g/mL. The ferric and cupric reducing power potentials of the extracts were expressed as EC50 value (the effective concentration at which the absorbance was 0.5). Fruit extract exhibited strong ferric reducing power with an EC50 of 871.25 mu g/mL. The metal chelating activity of the extracts increased with concentration. Chelating effect was 83.60% for fruit extract at 1mg/mL concentration. Oil content of fruit and mixed parts were detected as 6.71 and 6.14%, respectively. A total of 32 fatty acids were found in the oil. Essential fatty acids (linoleic and alpha-linolenic acid) were identified as the most abundant fatty acids in the oil. These results demonstrated that this plant species can be considered as an alternative to synthetic antioxidants. Likewise, the oil obtained from the plant can be used as a source of essential fatty acids for food and pharmacological applications.Öğe Antioxidant capacity and fatty acid profile of Centaurea kotschyi (Boiss. & Heldr.) Hayek var. persica (Boiss.) Wagenitz from Turkey(INST GRASA SUS DERIVADOS, 2011) Zengin, Gökhan; Güler, Gökalp O.; Çakmak, Yavuz Selim; Aktümsek, AbdurrahmanThe antioxidant capacity of the methanolic extract and the fatty acid composition of C. kotschyi var. persica were investigated. Six different chemical methods were used to determine the antioxidant capacity. The fatty acid composition was analyzed using gas chromatography. The IC50 value of the extract was determined as 37.09 mu g/ml (in the DPPH assay). In the beta-carotene/linoleic acid system, the extract exhibited 65.22% inhibition against linoleic acid oxidation. The amount of total phenolic content and total antioxidant capacity were detected as 36.52 mg gallic acid equivalent (GAE)/g and 74.93 mg ascorbic acid equivalent (AE)/g, respectively. The major fatty acid in the composition of C. kotschyi var. persica was found to be C 18:3 omega 3 (alpha-linolenic acid) by GC analysis. The results presented here indicate that C. kotschyi var. persica possess strong antioxidant properties. Therefore, the species can be used as a natural additive in food, cosmetic and pharmaceutical industries.Öğe Antioxidant Potential and Inhibition of Key Enzymes Linked to Alzheimer's Diseases and Diabetes Mellitus by Monoterpene-Rich Essential Oil from Sideritis galatica Bornm. Endemic to Turkey(ACG PUBLICATIONS, 2016) Zengin, Gökhan; Sarıkürkcü, Cengiz; Aktümsek, Abdurrahman; Ceylan, RamazanThe present study was designated to (1) characterize the essential oil from S. galatica (SGEOs) and (2) evaluate its antioxidant and enzyme inhibitory activities. Antioxidant capacity was tested different methods including free radical scavenging (DPPH, ABTS and NO), reducing power (FRAP and CUPRAC), metal chelating and phosphomolybdenum. Inhibitory activities were analyzed on acetylcholiesterase, butrylcholinesterase, alpha-amylase and alpha-glucosidase. SGEOs were chemically analyzed and identified by gas chromatography and gas chromatography/mass spectrophotometry. 23 components, representing 98.1% of SGEOs were identified. Monoterpene hydrocarbons (74.1%), especially alpha-(23.0%) and beta-pinene (32.2%), were the main constituents in SGEOs. The main sesquiterpene hydrocarbons were beta-caryophyllene (16.9%), germacrene-D (1.2%) and caryophyllene oxide (1.2%), respectively. Generally, SGEOs has shown moderate free radical, reducing power, metal chelating and enzyme inhibitory activities. These activities related to chemical profile in SGEOs. Our findings supported that the possible utility of SGEOs is a source of natural agents for food or pharmaceutical industries.Öğe Antioxidant potentials and anticholinesterase activities of methanolic and aqueous extracts of three endemic Centaurea L. species(PERGAMON-ELSEVIER SCIENCE LTD, 2013) Aktümsek, Abdurrahman; Zengin, Gökhan; Güler, Gökalp Özmen; Çakmak, Yavuz Selim; Duran, AhmetThe methanol and aqueous extracts of three endemic Centaurea species (C. polypodiifolia var. pseudobehen, C pyrrhoblephara and C antalyense) were investigated for their antioxidant and cholinesterase inhibitory activities. The antioxidant activities of these extracts were evaluated by in vitro models including, phosphomolybdenum assay, free radical scavenging assays (DPPH and ABTS), beta-carotene/linoleic acid test system, metal chelating assay, FRAP assay, ferric and cupric reducing power. Cholinesterase inhibitory activities were examined using Ellman's calorimetric method. Total phenol, flavonoid, and saponin contents were also measured. Among the six Centaurea extracts evaluated, the highest antioxidant abilities were obtained from C polypodiifolia var. pseudobehen. Methanolic extracts from C polypodiifolia var. pseudobehen and C antalyense had a noticeable inhibition towards AChE and BChE. These findings suggest that Centaurea species could be an anticholinesterase agent and antioxidant resource in some industries, such as food, pharmacology, and cosmetics. (C) 2013 Elsevier Ltd. All rights reserved.Öğe Antioxidant properties and enzyme inhibitory effects of extracts from Mandragora autumnalis and its fatty acid composition(MARMARA UNIV, FAC PHARMACY, 2016) Uysal, Şengül; Zengin, Gökhan; Aktümsek, AbdurrahmanThe present research was undertaken to evaluate antioxidant activities and enzyme inhibitory potentials of two extracts from two parts of Mandragora autumnalis. The antioxidant properties were evaluated by using different methods [ABTS (2,2-azino-bis (3-ethylbenzothiazloine-6-sulphonic acid)), DPPH (1,1 diphenyl-2-picrylhydrazyl radical), CUPRAC (cupric ion reducing antioxidant capacity), and FRAP (ferric reducing antioxidant power assays)]. Enzyme inhibitory potentials were tested against cholinesterase (AChE and BChE), tyrosinase, a-amylase and a-glucosidase. For phytochemical composition, fatty acids, total phenolics and flavonoid content were investigated. Generally F-Met exhibited the strongest antioxidant effect with the highest level of phenolics. Total phenolic and flavonoid content were determined as 26.10-46.92 mgGAE/g abd 3.60-26.11 mgRE/g, respectively. a- linolenic acid was found to be major fatty acids in the studied oils (33.81 % for flowers and 39.15 % for leaves). The study suggested that M. autumnalis could be valuable as a source of natural agents in food and pharmaceutical applications.Öğe Antioxidant properties of methanolic extract and fatty acid composition of centaurea urvillei DC. subsp hayekiana Wagenitz(ACG PUBLICATIONS, 2011) Zengin, Gökhan; Aktümsek, Abdurrahman; Güler, Gökalp Özmen; Çakmak, Yavuz Selim; Yıldıztugay, EvrenCentaurea is one of most important genera of Turkey flora. Some members of the genus have been used in Anatolian folk medicine. This study was undertaken in order to examine the in vitro antioxidant activities and fatty acid composition of Centaurea urvillei subsp. hayekiana. Antioxidative properties of the methanolic extract was assessed by different in vitro experiments including total phenolic and flavonoid content, phosphomolybdenum assay (total antioxidant capacity), free radical scavenging assay, beta-caroten/linoleic acid bleaching test system, ferric and cupric ion reducing power. According to the results of antioxidant capacity assays, C. urvillei subsp. hayekiana showed moderately antioxidant activity in test methods. Fatty acid analysis was performed by GC and thirty-two fatty acids were identified. The oil of C. urvillei subsp. hayekiana was characterized by higher amounts of C 18:2 omega 6 (linoleic acid) and C 18:1 omega 9 (oleic acid). The results suggested that C. urvillei subsp. hayekiana may be utilized as a source of both natural antioxidant and linoleic acid in healthy medicine and food industry.Öğe Antioxidant properties of methanolic extract and fatty acid composition of Centaurea urvillei DC. subsp. hayekiana Wagenitz(2011) Zengin, Gökhan; Aktümsek, Abdurrahman; Güler, Gökalp Özmen; Çakmak, Yavuz Selim; Yıldıztugay, EvrenCentaurea is one of most important genera of Turkey flora. Some members of the genus have been used in Anatolian folk medicine. This study was undertaken in order to examine the in vitro antioxidant activities and fatty acid composition of Centaurea urvillei subsp. hayekiana. Antioxidative properties of the methanolic extract was assessed by different in vitro experiments including total phenolic and flavonoid content, phosphomolybdenum assay (total antioxidant capacity), free radical scavenging assay, ?-caroten/linoleic acid bleaching test system, ferric and cupric ion reducing power. According to the results of antioxidant capacity assays, C. urvillei subsp. hayekiana showed moderately antioxidant activity in test methods. Fatty acid analysis was performed by GC and thirty-two fatty acids were identified. The oil of C. urvillei subsp. hayekiana was characterized by higher amounts of C 18:2 ?6 (linoleic acid) and C 18:1 ?9 (oleic acid). The results suggested that C. urvillei subsp. hayekiana may be utilized as a source of both natural antioxidant and linoleic acid in healthy medicine and food industry. © 2011 Reproduction is free for scientific studies. © 2011 Reproduction is free for scientific studies.Öğe Antioxidant property of Centaurea solstitialis L. from Konya, Turkey(ASIAN JOURNAL OF CHEMISTRY, 2008) Tekeli, Yener; Sezgin, Mehmet; Aktümsek, AbdurrahmanIn this study, Centaurea solstitialis L. was extracted with petroleum ether using a Soxhlet apparatus. The antioxidant properties of plant extract and synthetic antioxidant compounds were evaluated using different antioxidant tests, including reducing power, DPPH free radical scavenging activity and total phenolic compound. Results were compared with standard butylated hydroxytoluene and butylated hydroxyanisole.Öğe Asphodeline Cilicica Tuzlaci: From the Plant to Its Most Active Part Extract and Its Broad Bioactive Properties(ELSEVIER, 2019) Zengin, Gökhan; Aktümsek, Abdurrahman; Mocan, Andrei; Rengasamy, Kannan R. R.; Picot, Carene M. N.; Mahomoodally, Mohamad FawziThis study investigated into the polyphenolic content, antioxidant and enzyme (a-amylase, a-glucosidase, tyrosinase, acetylcholinesterase [AChE], and butyrylcholinesterase [BChE]) inhibitory activities of 12 extracts of the endemic Asphodeline cilicica (AC) Tuzlaci, from Turkey. The total phenolic content for the methanol and acetone extracts of AC roots were 56.52 and 52.96 mg GAEs/g extract, respectively. Both the acetone and methanol extracts of AC roots exhibited an important antioxidant capacity. Likewise, the acetone and methanol extracts of AC roots revealed to be the most potent scavengers of DPPH radical (58.25 and 58.78 mg TEs/g extract). Acetone extract of AC roots inhibited a-amylase showing an acarbose equivalent value (mmol ACAEs/g extract) of 0.27, while against a-glucosidase the value recorded was 2.30. The acetone and methanol extracts of the different plant parts of AC inhibited AChE and BChE, while no/poor activity was noted for the water extracts. In the present study, extracts of AC showed inhibitory activity against key enzymes involved in diabetes and neurodegenerative complications, thereby advocating for the need for in-depth studies geared towards the discovery of pharmacophores from this endemic plant. (c) 2018 SAAB. Published by Elsevier B.V. All rights reserved.Öğe Assessment of the antioxidant potential and fatty acid composition of four Centaurea L. taxa from Turkey(ELSEVIER SCI LTD, 2013) Aktümsek, Abdurrahman; Zengin, Gökhan; Güler, Gökalp Özmen; Çakmak, Yavuz Selim; Duran, AhmetThis paper focused on the assessment of antioxidant property and fatty acid composition of four Centaurea species. The antioxidant activity of its methanol extract was evaluated by several in vitro experiments including phosphomolybedum assay, DPPH assay, beta-carotene/linoleic acid, ferric and cupric reducing power. Total phenolic and flavonoid contents were also evaluated. The methanol extract of Centaurea pulcherrima var. pulcherrima showed the superior free radical scavenging activity, linoleic acid inhibition capacity, reducing power and also had the highest total phenolic content. A significant relationship between antioxidant capacity and total phenolic components was found. The oils of Centaurea taxa were also analysed for fatty acid concentration by gas chromatography. The principal fatty acids in the species were palmitic acid (23.38-30.49%) and linoleic acid (20.19-29.93%). These findings suggest that the Centaurea species could be used as a potential source of new natural antioxidants and unsaturated fatty acids in food industry, cosmetics and pharmaceutical preparations. (c) 2013 Elsevier Ltd. All rights reserved.Öğe Assessment of Trans Fatty Acid and Conjugated Linoleic Acid Content of Turkish Commercial Ice Creams(ASIAN JOURNAL OF CHEMISTRY, 2012) Çakmak, Yavuz Selim; Zengin, Gökhan; Akkoyunlu, Nurkan; Aktümsek, Abdurrahman; Güler, Gökalp ÖzmenIn this study, 27 commercial ice creams belonging to 4 different brands sold in Turkey were analyzed for their fatty acid composition, with relevance on their trans fatty acid and conjugated linoleic acid content. 16:0 palmitic acid was major fatty acid in all samples, except for cacao and chocolate ice creams. Other predominant fatty acids were 12:0 lauric acid, 18:0 stearic acid and 18:1 (09 oleic acid. Saturated fatty acids occurred in the largest proportions in all samples followed by monounsaturated fatty acids and polyunsaturated fatty acids. The total percentages of saturated fatty acids, monounsaturated fatty acids and polyunsaturated fatty acids ranged between 61.56-80.99, 13.30-210.86 and 3.68-8.02 %, respectively. Trans fatty acids and conjugated linoleic acid contents in ice cream samples were between 0.71-2.66 and 0.17-0.91 %, respectively. The results of this research have demonstrated that trans fatty acid, and conjugated linoleic acid content of ice creams obtained in Turkey are favorable levels when compared to many countries.Öğe Bazı Bitki Uçucu Yağlarının Bazı Hayvan Patojenlerine Karşı Antimikrobiyal Etkilerinin Araştırılması(2001) Akın, Mehtap; Aktümsek, Abdurrahman; Okur, OktayBu çalışmada, İçel ve Konya yöresinden toplanan Myrtus communis, Echinophora tenuifolia, Ziziphora tenuior, Origanum vulgare, Artemisia santonicum, Mentha piperita, Anthemis cretica bitkilerine ait uçucu yağların antimikrobiyal aktiviteleri araştırılmıştır. Elde edilen uçucu yağların antimikrobiyal aktivitesi Disk difüzyon metoduna göre Staphylococcus aureus 'ATCC 6538, Sarcinia lutea ATCC 9341 ve Staphylococcus aureus, Escherichia coli, Salmonella typhimurium, Pseudomonas aeruginosa' nın Selçuk Üniversitesi Veteriner Fakültesi Mikrobiyoloji ABD ve Konya Veteriner Kontrol ve Araştırma Enstitüsünden temin edilen saha suşları üzerinde denenmiştir. Çalışmada kullanılan bitki uçucu yağlarının bir mikroorganizmanın standart ve saha susuna karşı ve bir mikroorganizmanın iki ayrı saha susuna karşı farklı çaplarda inhibisyon zonları oluşturduğu tespit edilmiştir.
