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- Uzun, Sevda(79)
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- Turan, Ibrahim(33)
- Demir, Selim(32)
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- Deger, Orhan(10)
Yayınlar
- MakaleYalnız künye2014Attitudes towards HIV/AIDS patients and empathic tendencies: A study of Turkish undergraduate nursing students
Özakgül, Aylin Aktaş; Şendir, Merdiye; Atav, A. Serdar; Kiziltan, Belkiz
Background: Studies indicate that the attitudes of nurses, nursing students, and other health care professionals towards Human Immunodeficiency Virus (HIV) and Acquired Immune Deficiency Syndrome (AIDS) patients are affected by cultural differences and the fear of HIV/AIDS infection, resulting in both negative attitudes and reluctance to care for these patients. Empathy is critical for all health professionals in the delivery of effective care. Research indicates that as empathic tendencies develop, so do better communication skills, better attitudes, and better quality of care. Objectives: The purpose of this study was to examine the relationships among demographic factors, familiarity with HIV/AIDS, attitudes towards HIV/AIDS, and empathic tendencies in a Turkish sample of nursing students. Design and Methods: Using a non-experimental, correlational design, data on demographics, HIV/AIDS Attitude Scale (AAS) and the Scale of Empathic Tendency (SET) were collected. Participants: The study sample consisted of 614 undergraduate nursing students in two universities located in different geographic regions of Turkey. Results: The results of this study indicated that attitudes and empathic tendencies are related to knowledge and exposure to patients. As well, those students with more positive attitudes had higher empathic tendencies towards HIV/AIDS patients. Conclusions: It is important to adopt strategies to improve the empathic tendencies and attitudes of nursing students. These strategic changes would increase the quality of care provided to all patients.
- MakaleYalnız künye2014Effects of lichen extracts on haematological parameters of rats with experimental insulin-dependent diabetes mellitus
Çolak, Suat; Geyikoğlu, Fatime; Aslan, Ali; Deniz, Gülşah Yıldız
The prevalence of diabetes mellitus in the world is steadily increasing. Oxidative stress contributes to the development of diabetic complications, including diabetic haematological changes. Lichens are used as food supplements and are also used as possible natural antioxidant, antimicrobial and anticancer agents. We hypothesized that antioxidant activity of lichens may decrease hyperglycaemia-induced oxidative stress and prevent the development of diabetic complications, including abnormality in haematological condition. Therefore, the effects of Cetraria islandica water extract (CIWE) and Pseudevernia furfuracea water extract (PFWE) on the haematological parameters of rats with type 1 DM were investigated for the first time in the present study. Control Sprague-Dawley or streptozotocin (STZ)-induced diabetic rats were either untreated or treated with water lichen extracts (5–500 mg/kg body weight (bw)/day) for 2 weeks, starting at 72 h after STZ injection. On day 14, animals were anaesthetized and haematological and metabolic parameters were determined between control and experimental groups. In addition, the total oxidative stress (TOS), a specific indicator of oxidative stress, and the total antioxidant capacity (TAC) were measured by biochemical studies. In diabetic rats, CIWE of 250–500 mg/kg bw dose showed more prominent results when compared with doses of PFWE for TAC. The results obtained in the present study suggested that the antioxidant activities of lichens might be the possible reason behind the observed antihaematological status. However, the protective effect of lichen extracts were inadequate on diabetes-induced microcytic hypochromic anaemia. In addition, the extracts have no effect on metabolic complications. Our experimental data showed that high doses of CIWE and PFWE alone have no detrimental effect on blood cells and TOS status of plasma. Hence, they are safe and suitable for different administration routes.
- MakaleYalnız künye2014Characterization of novel VIM carbapenemase, VIM-38, and first detection of GES-5 carbapenem-hydrolyzing β-lactamases in Pseudomonas aeruginosa in Turkey
Iraz, Meryem; Duzgun, Azer Ozad; Cicek, Aysegul Copur; Bonnin, Remy A.; Ceylan, Aysenur; Saral, Aysegul; Nordmann, Patrice; Sandalli, Cemal
Pseudomonas aeruginosa isolates were collected form a Turkish hospital. Antimicrobial susceptibility was performed using the Vitek 2 Compact system, and 24 isolates were categorized as multidrug resistant (n = 18), extensively-drug resistant (n = 5), or pan-drug resistant (n = I). PCR and DNA sequence analysis revealed that 1 strain possessed the bla(GES-5) and another carried a novel bla(VIM) variant, named VIM-38. This new gene exhibited 1 amino acid substitution (Ala265Val) in comparison to its closest variant, VIM-5. Both VIM encoding genes were clones and demonstrated similar susceptibility profile when expressed in identical background. The presence of VIM-38 increases the diversity of carbapenemases in Turkey. (C) 2014 Elsevier Inc. All rights reserved.
- MakaleAçık Erişim2014Protective effects of growth hormone on bacterial translocation and intestinal damage in rats with partial intestinal obstruction
Kaymakci, A.; Guven, S.; Ciftci, I; Akillioglu, I; Aktan, M.; Eker, H. H.; Sutcu, A.; Abasiyanik, A.
Objective: One of the reasons of bacterial translocation (BT) is the complete or partial intestinal obstructions (PIO) of the gastrointestinal system. In this study, we aimed to investigate the effects of recombinant human Growth Hormone (rhGH) on BT in rats with partial intestinal obstruction (PIO). Material and methods: The rats were randomly divided into the 4 groups: Group I: Sham-operated (SO) (n = 12), Group II control PIO (n = 12), Group III: PIO with rhGH treatment for 5 days (n = 12), Group IV: PIO with rhGH treatment 5 days before PIO and 5 days after PIO (a total of 10 days) (n = 12). In the groups III and IV, the effects of 5 and 10 days administered rhGH were examined. Results: The level of serum and of intestinal fluid IgA was significantly higher in the Group IV compared to the Group I, Group II and Group III. In the Group IV, the number of small intestinal goblet and colonic goblet cells, and the lengths of intestinal mucosal villi and crypt depths were statistically significantly higher than in Groups II and III. The rate of bacterial translocation was higher in the Group II: 100 % in MLNs, 41.6 % in blood culture and 50.8 % in the liver cultures, it was significantly higher compared to the other groups (p < 0.01). Conclusions: The study results demonstrated that administration of rhGH to the rats with PIO for at least 10 days decreased bacterial translocation (Fig. 3, Ref. 25). Text in PDF www.elis.sk.
- MakaleAçık Erişim2014Molecular Epidemiology, Antimicrobial Resistance and Characterization of Extended-Spectrum Beta-Lactamases of Salmonella enterica Serotype Paratyphi B Clinical Isolates
Bayramoglu, Gulcin; Özgümüs, Osman Birol; Kolayli, Fetiye; Kamburoglu, Ahu; Besli, Yesim; Dinç, Ugur; Tosun, Ilknur; Aydin, Faruk
Although Salmonella enterica serotype Paratyphi B is the less frequently isolated serotype worldwide and in Turkey, it is the most common serotype in our hospital, with a marked increase in 2007. The purpose of this study was to investigate the antibiotic susceptibility and the extended spectrum beta-lactamase (ESBL) profile, and molecular epidemiology of S. Paratyphi B isolates detected in our hospital microbiology laboratory. Seventy isolates identified as S. Paratyphi B from 109 Salmonella isolates obtained from clinical specimens from different patients between October 2005 and December 2012, were included in the study. In addition to conventional methods, isolates were identified using the Phoenix automated microbiology system (Becton Dickinson, USA). Serotyping of the isolates was performed on the basis of slide agglutination and the Kauffmann-White scheme. The antibiotic susceptibility of the isolates was determined using the BD Phoenix (TM) automated system and disk diffusion test. ESBL enzymes were investigated using the combined disk test, isoelectric focusing, polymerase chain reaction (PCR) and sequence analysis. The molecular epidemiology of the 51 isolates obtained between October 2005 and August 2008 was examined with pulsed-field gel electrophoresis (PFGE) using the Xbal enzyme. S. Paratyphi B isolates were obtained from 70 specimens (46 blood, 16 fecal, 4 bone marrow, 2 urine and 2 wound) each from different patients. Resistance to nalidixic acid was determined in 18.6%, resistance to ampicillin, cefotaxime and cefepime in 2.9% and to ceftazidime and co-trimoxazole in 1.4% of the isolates. ESBL production was detected only in two isolates; in one TEM-1 was accompanied by CTX-M-15 and in the other isolate CTX-M-3 was found. Forty-six of the 51 isolates (90%) were found to be genetically related by PFGE and were placed in cluster A. The distribution of the isolates in cluster A revealed six subtypes as A1 (n= 7), A2 (n= 11), A3 (n= 7), A4 (n= 18), AS (n= 2) and A6 (n= 1). Three different patterns not related to the cluster A were determined in the remaining five isolates (two were B, one of each was C, D and E). In conclusion, although the rate of antibiotic resistance was low in the S. Paratyphi B isolates in our hospital, rare types of ESBLs such as CTX-M-3 and CTX-M-15 were detected in Salmonellae. As far as the current literature is considered, this is the first report in Turkey of bla(CTX-M-15) in Salmonella spp. and bla(CTX-M-3) genes in S. Paratyphi B. The results may indicate a possible future threat to the treatment of Salmonella infections. Since most of the isolates were genetically related, this might suggest an epidemic in our region.
- MakaleAçık Erişim2014Poly(ε-caprolactone) Composite Scaffolds Loaded with Gentamicin-Containing β-Tricalcium Phosphate/Gelatin Microspheres for Bone Tissue Engineering Applications
Sezer, Umran Aydemir; Arslantunali, Damla; Aksoy, Eda Ayse; Hasirci, Vasif; Hasirci, Nesrin
In this study, novel poly(epsilon-caprolactone) (PCL) composite scaffolds were prepared for bone tissue engineering applications, where gentamicin-loaded -tricalcium phosphate (-TCP)/gelatin microspheres were added to PCL. The effects of the amount of -TCP/gelatin microspheres added to the PCL scaffold on various properties, such as the gentamicin release rate, biodegradability, morphology, mechanical strength, and pore size distribution, were investigated. A higher amount of filler caused a reduction in the mechanical properties and an increase in the pore size and led to a faster release of gentamicin. Human osteosarcoma cells (Saos-2) were seeded on the prepared composite scaffolds, and the viability of cells having alkaline phosphatase (ALP) activity was observed for all of the scaffolds after 3 weeks of incubation. Cell proliferation and differentiation enhanced the mechanical strength of the scaffolds. Promising results were obtained for the development of bone cells on the prepared biocompatible, biodegradable, and antimicrobial composite scaffolds. (c) 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40110.
- MakaleAçık Erişim2014Oxidant-Antioxidant Balance during On-Pump Coronary Artery Bypass Grafting
Mentese, Umit; Dogan, Orhan Veli; Turan, Ibrahim; Usta, Sefer; Dogan, Emre; Mentese, Seda Oztas; Demir, Selim; Ozer, Tanil; Aykan, Ahmet Cagri; Alver, Ahmet
Backround. The aim of this study was to evaluate the changes in perioperative oxidant-antioxidant balance in ONCABG. Methods. Twenty-three patients were included in this study. Serum total oxidant status (TOS), total antioxidant status (TAS), and oxidative stress index (OSI) values were assessed preoperatively, at 20 minutes after aortic clamping and at 30 minutes, 6 hours, and 48 hours after declamping (reperfusion). The patients were divided into 2 groups according to the median aortic cross clamping (XC) time: group 1 (XC time < 42 minutes) and group 2 (XC time >= 42 minutes). Results. TOS and OSI values of whole patients at 30 minutes after reperfusion were higher than preoperative values (P = 0.045, P = 0.015), while perioperative TAS levels of the patients were similar to the preoperative levels (P = 0.173). XC time was correlated with TOS levels at 30 minutes after reperfusion (P = 0.43, P = 0.041). In group 2, TOS and OSI values at 30 minutes after reperfusion were higher than preoperative values (P = 0.023, P = 0.048), whereas a significant difference was not found in group 1 (P = 0.601, P = 0.327). Conclusions. Oxidative imbalance and increase in TOS at reperfusion in ONCABG may be associated with XC time.
- BildiriYalnız künye2013EFFORT DYSPNEA CAUSED BY AN UNUSUAL MEMBRANE LOCALIZED IN THE LEFT VENTRICLE OF THE HEART
Kutlu, R.; Memetoglu, M. E.; Arik, O. Z.; Karal, H.; Avsar, E.
- MakaleAçık Erişim2013The prevalence of chronic bronchitis in adults living in the center of Gumushane
Tutar, Nuri; Yesilkaya, Selma; Memetoglu, Mehmet Erdem; Özel, Deniz; Bosnak, Emre
Introduction: Chronic bronchitis and emphysema are major components of chronic obstructive pulmonary diseases (COPD). The aim of this study was to determine the prevalence of chronic bronchitis 20 years and over living in the center of Gumushane and to analyze the risk factors. Materials and Methods: The study is targeted to reach 373 people who represent the center of Gumushane, 368 (98.6%) people have been reached. Participants were filled modified version of the questionnaire created by the Medical Research Council by face-to-face interview technique. Results: The prevalence of chronic bronchitis was 14.1%. The average age was in the chronic bronchitis group and nonchronic bronchitis group was respectively 43.2 +/- 12.9, 39.3 +/- 11.6, and the differance was statistically significant (p<0.05). Considering the relationship between cigarette smoking with chronic bronchitis, it was more frequent in smokers than nonsmokers (p<0.001, OR 4.74, 95% CI 2.47-9.17). Chronic bronchitis was observed in passive smokers than in non-smokers (p=0.004, OR 2.86, 95% CI 1.36-6.03). Occupational exposure to dust, fumes and history of childhood pulmonary diseases were increased chronic bronchitis prevalence (respectively, p<0.001, OR 9.53, 95% CI 4.56-19.94; p<0.001, OR 12.14, 95% CI 5.87-25.12). Male gender, low income level and to warm up with stove were found statistically significant by univariate logistic regression analysis but these risk factors were not statistically significant in the multivariate analysis. Educational level was not found statistically significant in both analysis (p>0.05). Conclusion: The prevalence of chronic bronchitis was 14.1% in 20 years and older adults living in the center of Gumushane. Old age (especially over the age of 50), active or passive smoking, occupational history of dust, fumes and history of childhood pulmonary diseases were found to be risk factors for chronic bronchitis.
- BildiriAçık Erişim2013In Coronary Artery Disease Comparison of Turkey and Europe According to Kyrgyzstan and Euroaspire III Results
Kutlu, Rasim; Memetoglu, Mehmet Erdem; Muratalievic, Tolkun Murataliev
- MakaleYalnız künye2013A rare cause of acute respiratory failure: spontaneous pneumomediastinum due to cocaine use
Memetoglu, Mehmet Erdem; Kalkan, Asim; Tutar, Nuri; Kurtcan, Serpil; Gündüz, Abdulkadir
Spontaneous pneumomediastinum is defined as free air in mediastinum without any underlying pulmonary pathology. Although spontaneous pneumomediastinum is a rarely seen clinical entity, it is one of the most common reasons of sudden pleuritic chest pain in healthy young individuals. Cocaine inhalation is also associated with the development of spontaneous pneumomediastinum. Our case having spontaneous pneumomediastinum was referred to our emergency service with the complaint of acute respiratory failure due to cocaine abuse, and the etiology, clinical presentation and the treatment of the disease were evaluated in our study.
- MakaleAçık Erişim2013Sequence Variant in the LPIN1 gene in Patients with Metabolic Syndrome
Kural, Birgul Vanizor; Deger, Orhan; Erem, Cihangir; Yücesan, Fulya Balaban; Barlak, Yasam; Turan, Ibrahim; Aliyazicioglu, Rezzan
Objective: Metabolic syndrome (MetS) is a complex disease characterized by insulin resistance, abdominal obesity, hyperglycemia, hypertension, hypertriglyceridemia and low HDL-cholesterol level. The aim of the study was to evaluate the sequence variations in the LPIN1 gene in MetS. This gene codes lipin-1 protein which functions as Mg-dependent phosphatidic phosphatase enzyme and transcriptional coactivator. Material and Methods: The study groups included 73 MetS (19 M/54 F) and 56 non-MetS (16 M/40 F). Sequence variation in exons 2, 4, 5 and 14 of the LPIN1 gene were investigated by DNA sequencing method. Results: c.696 G>C variant (p.S232S) in exon 5 was observed in only one women with MetS. But this variation is not important because of coding same amino acid. Conclusion: Any important sequence variant was not detected in exons 2, 4, 5 and 14 in the LPIN1 gene in MetS.
- BildiriAçık Erişim2013The Pharmacoeconomic Efficacy of Ivabradine and Nebivolol Treatment of Stable Angina Pectoris in Patients with Left Ventricular Dysfunction
Kutlu, Rasim; Memetoglu, Mehmet Erdem
- MakaleAçık Erişim2013Evaluation of cardiovascular risk factors among university students in Turkey: a cross-sectional survey
Kutlu, Rasim; Memetoglu, Mehmet Erdem
Background - Recent data indicate increasing rates of mortality from cardiovascular (CV) disease in Turkey. This study aimed to evaluate CV disease risk factors among university students in Northern Turkey. Methods - In this cross sectional descriptive study, 302 students were randomly recruited (171 females (57%) and 131 males (43%), mean age of 20 +/- 2.1 years). Blood glucose, cholesterol profile (total, high density lipoprotein (HDL) and low density lipoprotein (LDL) cholesterols), triglyceride, glycosylated haemoglobin, resting blood pressure, and body mass index were measured using standard protocols. All participants were asked to complete a questionnaire including questions on lifestyle, genetic predisposition, smoking habit, and psychosocial factors. Results - The mean systolic and diastolic blood pressure of students were 127.1 +/- 13.5 mmHg and 78.3 +/- 12.4 mmHg. The mean values were 98.4 +/- 14.2 mg/dL for fasting blood glucose value, 5.4 +/- 0.4 for HbA(1c), 80.0 +/- 10.3 beats/min for heart rate, for total cholesterol 199.1 +/- 24.6 mg/dL, 43.8 +/- 9.9 mg/dL for HDL, 114.7 +/- 24.1 mg/dL for LDL, 199.1 +/- 24.6 mg/dL for trygliceride, 24.8 +/- 3.6 kg/m(2) for body mass index, 97.6 +/- 17.9 cm for waist circumference. No significant difference was observed between gender according to CV risk factors' values statistically. It was observed that 111 (36.8%) students were overweight, 32 (10.6%) were obes. About 135 (44.0%) of students had abnormally unacceptable WC value. Smoking habit was seen in 130 (43.0%) students [73 (24.2%) male and 57 (18.9%) female]. Conclusion - A substantial proportion of Turkish students were overweight or obese, and had smoking habit. Our results underscore the need to implement health promotion programmes and perform large-scale epidemiological studies within the general Turkish young adult population.
- BildiriAçık Erişim2013Evaluation of Cardiovascular Risk Factors Among University Students in Northern Turkey: A Cross-sectional Survey
Kutlu, Rasim; Memetoglu, Mehmet Erdem
- MakaleYalnız künye2013Coronary Flow Reserve and Myocardial Performance Index in Newly Diagnosed Diabetic Patients
Kalkan, Gulhan Yuksel; Gür, Mustafa; Sahin, Durmus Yildiray; Baykan, Ahmet Oytun; Elbasan, Zafer; Kuloglu, Osman; Kivrak, Ali; Türkoglu, Caner; Arik, Osman Ziya; Çayli, Murat
BackgroundPatients with diabetes mellitus (DM) are at high risk of left ventricular (LV) dysfunction. A reduction of coronary flow reserve (CFR) has been demonstrated in diabetic patients without coronary artery stenosis. In this study, we investigated the association between LV myocardial diastolic and systolic functions and the CFR in newly diagnosed diabetic patients in the absence of coronary artery disease. MethodWe studied 88 patients (mean age 4910years) with newly diagnosed DM and 40 healthy control subjects (mean age 509years). All subjects underwent transthoracic echocardiography. The myocardial performance index (MPI) was determined by using pulsed-wave Doppler. The CFR was calculated as the hyperemic to resting coronary diastolic peak velocities ratio. ResultsPatients with diabetes had significantly longer mitral E-wave deceleration time and higher MPI value than control group (P=0.023 and P<0.001, respectively). The mean CFR was lower in diabetic patients compared with controls (P=0.001). The MPI was significantly correlated with CFR (r=-0.371, P<0.001), LV ejection fraction (r=-0.274, P=0.018) E/A ratio (r=-0.244, P=0.024), and glycosylated hemoglobin (HbA1c) (r=0.476, P<0.001). Multivariate regression analysis showed that MPI was independently associated with CFR (=-0.292, P<0.0001) and HbA1c level (=0.372, P<0.0001). ConclusionsThe MPI was independently associated with CFR in newly diagnosed diabetic patients. The decrease in CFR may cause LV systolic and diastolic dysfunction in asymptomatic diabetic patients.
- MakaleAçık Erişim2013Comparison of the safety and efficacy of ivabradine and nebivolol mono- and combination therapies in the treatment of stable angina pectoris patients with left ventricular dysfunction
Kutlu, Rasim; Memetoglu, Mehmet Erdem; Muratalievic, Tolkun Murataliev
We aimed to investigate the pharmacoeconomic efficacy of ivabradine and nebivolol in treatment of stable angina pectoris patients with left ventricular dysfunction prospectively. Pharmacoeconomic analysis was performed by using cost minimization analysis, and cost effectiveness analysis. After 6 months' treatment LVEF for the nebivolol group (17 patients, 50%) improved by (38 +/- 6.5) to (41 +/- 3.2), (p>0.05) and for the ivabradine group (17 patients, 50%) (37 +/- 5.4) to (41 +/- 2.3), (p>0.05), mean MET value in the nebivolol group increased from (3.7 +/- 1.2) to (5.5 +/- 1.6), (p>0.05), versus from (3.6 +/- 1.5) to (5.5 +/- 1.4), (p>0.05) in the ivabradine group, cost minimization analysis results showed a difference in the total cost of treatment was US$ 5288.7 in favor of nebivolol. The findings suggest that nebivolol is more cost-effective than ivabradine in the treatment of patients with left ventricular dysfunction.
- MakaleAçık Erişim2013The effect of prenatal exposure to 900-MHz electromagnetic field on the 21-old-day rat testicle
Hanci, Hatice; Odaci, Ersan; Kaya, Haydar; Aliyazicioǧlu, Yüksel; Turan, Ibrahim; Demir, Selim; Çolakoǧlu, Serdar
The aim of this study was to investigate the effect of exposure to a 900-MHz electromagnetic field (EMF) in the prenatal term on the 21-old-day rat testicle. Pregnant rats were divided into control (CG) and EMF (EMFG) groups. EMFG was exposed to 900-MHz EMF during days 13-21 of pregnancy. Newborn CG rats were obtained from the CG and newborn EMFG (NEMFG) rats from the EMFG. Testicles were extracted at postnatal day 21. Lipid peroxidation and DNA oxidation levels, apoptotic index and histopathological damage scores were compared. NEMFG rats exhibited irregularities in seminiferous tubule basal membrane and epithelium, immature germ cells in the lumen, and a decreased diameter in seminiferous tubules and thickness of epithelium. Apoptotic index, lipid peroxidation and DNA oxidation were higher in NEMFG rats than in NCG. 21-day-old rat testicles exposed to 900-MHz EMF in the prenatal term may be adversely affected, and this effect persists after birth.
- MakaleYalnız künye2013Radical scavenging and antioxidant capacity of serotonin
Sarikaya, S. Beyza Öztürk; Gülçin, Ilhami
Serotonin is a monoamine neurotransmitter and biochemically derived from tryptophan. The present paper examines the in vitro antioxidant and radical scavenging capacity of serotonin using different in vitro methodologies. For the determination of antioxidant activity of serotonin, 1,1-diphenyl-2-picryl-hydrazyl free radical (DPPH) scavenging, 2,2́-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) radical scavenging activity, total antioxidant activity determination by ferric thiocyanate, total reducing ability determination by Fe3+-Fe2+ transformation method, superoxide anion radical scavenging by riboflavin-methionine-illuminate system, H2O2 scavenging and ferrous ions (Fe +) chelating activities of serotonin were performed. Also, butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), α-tocopherol and trolox, a water-soluble analog of α-tocopherol, were used as the reference antioxidant radical scavenger compounds. Serotonin completely inhibited lipid peroxidation of a linoleic acid emulsion at 15 μg/mL concentration. On the other hand, the above mentioned standard antioxidants displayed inhibition of 92.2, 99.6, 84.6 and 95.6% on peroxidation of linoleic acid emulsion, respectively at the 45 μg/mL concentration. In addition, serotonin was effective in DPPH· scavenging, ABTS•+ radical scavenging, superoxide anion radical scavenging, H2O2 scavenging, ferric ions (Fe3+) reducing power and metal chelating on ferrous ions (Fe+) activities. Also, those various antioxidant activities were compared to BHA, BHT α-tocopherol and trolox as references antioxidant compounds.
- MakaleAçık Erişim2013Antioxidant effect of rosehip seed powder in raw and cooked meatballs during refrigerated storage
Ilyasoǧlu, Huri
The aim of this study was to learn the usage ability of rosehip seed powder (RSP) as an antioxidant agent to prevent lipid oxidation in raw and cooked meatballs during refrigerated storage. For this purpose, 4 different formulations (without RSP and with 1%, 2%, and 4% RSP) were prepared. Thiobarbituric acid reactive substances (TBARS) values of the raw and cooked meatballs were determined at 0, 3, 6, 9, and 12 days of storage. Both the raw and the cooked meatballs containing 2% RSP had lower TBARS values at the end of storage compared to the control meatballs. Moreover, the difference in sensorial properties between the cooked control sample and cooked RSP-added test samples was not significant. These results indicated that RSP may be utilized as a natural antioxidant in cooked meatballs.
