University of Tehran Iranian Journal of Veterinary Medicine 2251-8894 13 2 2019 04 01 A survey on the prevalence of heart murmurs in polo horses بررسی شیوع مرمرهای قلبی در اسب های چوگان 115 121 71537 10.22059/ijvm.2019.270861.1004948 EN Mohammad Reza Mokhber Dezfouli Department of Internal Medicine, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran Morteza Mozaffari Department of Internal Medicine, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran Hamid Tavanaeimanesh Department of Internal medicine, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran 0000-0002-8293-0388 Alireza Vajhi Department of Surgery and Radiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran Journal Article 2018 05 06 Background: Cardiac murmur and subsequently cardiac failure is one of the poor-performance causes in athletic horses. Attention to murmur character is vital during heart examination. Polo is a sport which demands very high stress on horses, which may result in more stress on cardiovascular system. Objectives: In this study we assume that high pressure on polo horses makes them more susceptible to valves insufficiency as a result of high velocity across valves. Methods: 136 polo horses were evaluated in this study, and all participated in polo matches. Both sides of chest were heard carefully by two clinicians and murmur characters recorded in detail. Afterward the accuracy of auscultation finding was proved by echocardiography, in echocardiography examination all the valves were evaluated carefully for any trace of regurgitation or stenosis across valves. Results: Forty-seven horses showed cardiac murmurs during auscultation (34.55%). Thoroughbred had the highest rate of murmur, with 71% of murmurs observed in this breed. Grade 2 murmurs were more frequent than others and 24 horses showed Grade 2 murmurs. And tricuspid had the highest involvement and 24 horses had tricuspid regurgitation. Conclusions: This study is the first report of cardiac murmur in Polo horses, which showed the high presence of tricuspid and aortic murmur. The difference between prevalence of murmurs in this study and other ones was not remarkable

https://ijvm.ut.ac.ir/article_71537_41daf30eeecaf2734abadcccec124a61.pdf

University of Tehran Iranian Journal of Veterinary Medicine 2251-8894 13 2 2019 04 01 Follow up the Treatment Process of Mitral Valve Diseases by Radiography and Echocardiography in Dogs پیگیری روند درمان بیماری های دریچه میترال توسط رادیوگرافی و اکوکاردیوگرافی در سگ 123 130 71510 10.22059/ijvm.2019.268687.1004939 EN Leila Mohammadyar Department of Pharmacology, Faculty of Veterinary Medicine, Islamic Azad University of Garmsar, Semnan, Iran Mohammad Molazem 2Department of Surgery and Radiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran Mohammad Reza Esmaili Nejad 3DVSc/Phd student of Veterinary Diagnostic Imaging, Department of Surgery and Radiology, University of Tehran, Tehran, Iran Aryo Parseh 4Doctorate of Veterinary Medicine Journal Article 2018 12 10 Background: Mitral valve disease is the most common acquired heart disease in dogs. Mitral valve regurgitation (MR) due to endocardiosis is an important cause of morbidity and mortality in dog. Echocardiography as a non-invasive tool is routinely used to evaluate and diagnose different disorders in the heart. Objectives: The purpose of this study is to determine the efficacy of medical treatments and follow-up administration by the veterinarians in Tehran, using radiography and echocardiography. Methods: A total of 35 dogs from various breeds with cardiac heat failure (CHF) because of MR were selected for prospective randomized study. After clinical examination and radiography, progressive mitral endocardiosis was confirmed by echocardiography. After that, patients were treated by a routine plans recommended by the general practitioners (12 active small animal clinicians). Follow-up radiography and echocardiography were performed again after 3 months for checking the efficacy of treatment protocol on cardiac output. Results: None of the medically treated patients statically showed significant improvement in their radiographic or echocardiographic parameters, that can be the outcome of incompatibility of using protocols with the standard ones. Conclusions: Although more studies are needed, based on the present results there was no significant change in cardiac parameters after 3 months of treatment. It seems that the current routine medication used by the active practitioner is not effective and cannot make a better quality of life in short term and requires changing the dose, the drugs producers or use of different prescription items.

https://ijvm.ut.ac.ir/article_71510_a3caf3da8937bba6c0459eef574a2473.pdf

University of Tehran Iranian Journal of Veterinary Medicine 2251-8894 13 2 2019 04 01 Identification and Discrimination of Salmonella Enteritidis, S. Pullorum, S. Gallinarum and S. Dublin Using Salmonella Specific Genomic Regions Amplification Assay شناسایی وتفریق سرووارهای سالمونلا انتریتیدیس ، سالمونلا پلوروم ، سالمونلا گالیناروم و سالمونلا دابلین با استفاده از آزمایش تکثیرنواحی اختصاصی ژنومی 131 142 71557 10.22059/ijvm.2019.259712.1004902 EN Ayyed Bajee Alzwghaibi Department of Animal Source, Faculty of Agriculture, University of Al-Qasim Green, Iraq Ramak Yahyaraeyat Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran Bahar Nayeri Fasaei Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran Arash Ghalyanchi Langeroudi Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran Taghi Zahraei Salehi Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran 0000-0002-5665-5757 Journal Article 2018 12 12 Background: DNA amplification method has been developed for identifying and discriminating Salmonella serovars, using specific primers at the genus and serovar levels and to identify the S. Enteritidis, S. Dublin, S. Gallinarum and S. Pullorum. Objectives: This study was conducted for molecular identification and discrimination among some important Salmonella serovars. Methods: Fifty isolates of Salmonella were assayed. The PCR assay was designed to amplify DNA fragments from six Salmonella genes, invA (284 bp), tcpS (882 bp), lygD (339 bp), flhB (155 bp), SlgC (252 bp), and speC (174 bp). Results: The results showed invA and tcpS genes presence in all four Salmonella serovars, whereas the lygD gene only exists in S. Enteritidis and is not found in S. Dublin, S. Gallinarum and S. Pullorum. The flhB gene is only present in S. Enteritidis and S. Dublin whereas it does not exist in S. Gallinarum and S. Pullorum. The SlgC gene exists in both S. Gallinarum and S. Pullorum, the SpeC gene is specifically present in S. Gallinarum, whereas SlgC and SpeC genes are not found in S. Enteritidis and S. Dublin. Salmonella Dublin serovar amplification assay successfully identified three selected serovar specific genomics regions (SSGRs) and hut gene. The results identify hut gene (495 bp), DSR1 (Dublin-specific genomics region1) (105 bp), DSR2 (Dublin-specific genomics region2) (203 bp), and DSR3 (Dublin-specific genomics region3) (296 bp). Conclusions: Amplification techniques on Salmonella serovars specific genomics regions are able to identify and discriminate clinically significant Salmonella serovars, and therefore, have the possibility to be used as a useful and rapid screening assay and support conventional biochemical and serological examinations

https://ijvm.ut.ac.ir/article_71557_c0beaa1d30f7c4920137c00d21bac168.pdf

University of Tehran Iranian Journal of Veterinary Medicine 2251-8894 13 2 2019 04 01 Denovirus Antigen Detection in Paraffinized Lung Sections of Pneumonic Goat Lungs Using Immunohistochemistry شناسایی آنتی ژن آدنوویروس در مقاطع بافتی پارافینه متعلق به ریه بزهای مبتلا به پنومونی با استفاده از تکنیک ایمنوهیستوشیمی 143 150 71566 10.22059/ijvm.2019.262877.1004913 EN Keyvan Jamshidi Department of Veterinary Pathology, Faculty of Veterinary Medicine, IAU Garmsar Branch, Garmsar, Iran Ozlem Ozmen Department of Veterinary Pathology Faculty of Veterinary Medicine Mehmet Akif Ersoy University Turkey Mehrdad Rahmani Graduated from the Faculty of Veterinary Medicine, IAU Garmsar Branch, Garmsar, Iran Rashid Marvaki Graduated from the Faculty of Veterinary Medicine, IAU Garmsar Branch, Garmsar, Iran Mehdi Soltanmohammadi Graduated from the Faculty of Veterinary Medicine, IAU Garmsar Branch, Garmsar, Iran Journal Article 2019 01 14 BACKGROUNDS: Diseases affecting the respiratory tract of sheep and goats are one of the most important factors which limit production of these species on a world-wide basis. OBJECTIVES: The main goal of this study was to determine Adenovirus (AdV) antigen in formalin-fixed paraffin-embedded lung tissue of pneumonic goats, using immunohistochemistry (IHC) staining method. METHODS: For this purpose, the lungs of 402 goats, which were raised in various farms in the Garmsar district and surrounding areas and were brought to the local abattoir for slaughtering between April and September 2016, were examined. RESULTS: Macroscopic pneumonia findings were detected in different lobes particularly in the apical and cardiac lobes of the lungs of 26 goats (%6.46). The rates of mild, moderate and severe consolidations observed in the pneumonic lungs were 59.8%, 26.3% and 11.6%, respectively. Pneumonias were microscopically classified in goats as interstitial pneumonia (n=15) (57.69%), suppurative bronchopneumonia (n=4) (15.38%), bronchointerstitial pneumonia (n=3) (11.53%), and parasitic pneumonia (n=4) (15.38%). A total of 22 pneumonic lungs, excluding parasitic pneumonia, examination with immunohistochemistry (IH) in terms of AdV antigen, were considered. AdV antigen was determined to be (13.63 %) (n=3) by the immunohistochemistry (IHC) method. CONCLUSIONS: In conclusion, the presence of viral antigen in lung tissues of goats may indicate that natural pneumonia may be induced by AdV or possibly other species-specific AdVs. Moreover, it is suggested that AdV might have a role in predisposing this species to secondary bacterial infections.

https://ijvm.ut.ac.ir/article_71566_fe77b433bd6b6e16d15b2b7e18bd96ac.pdf

University of Tehran Iranian Journal of Veterinary Medicine 2251-8894 13 2 2019 04 01 Role of Central Cannabinoidergic System on Ghrelin-Induced Hypophagia in Layer-Type Neonatal Chicken نقش سیستم کانابینویدرژیک مرکزی بر هیپوفاژی ناشی از گرلین در جوجههای نژاد تخمگذار 151 161 71571 10.22059/ijvm.2019.271492.1004951 EN Mohammadreza Taherian Department o f Animal Sciences, Faculty of Agriculture, Kashmar Branch, Islamic Azad University, Kashmar, Iran Morteza Zendehdel Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran Shahin Hassanpour Department of Basic Sciences, Faculty of Veterinary Medicine, Science and Research Branch, Islamic Azad University, Tehran, Journal Article 2018 12 15 Background: Feeding behavior is regulated via a complex network which interacts through diverse signals from central and peripheral tissues. OBJECTIVES: The main purpose of the current study was to determine the role of central cannabinoidergic (CBergic) system on ghrelin-induced hypophagia in 3-h food deprived (FD3) neonatal chicken. METHODS: In experiment 1, chicks were ICV injected with control solution, ghrelin (0.6 nmol), SR141716A (selective CB1 receptors antagonist, 6.25 µg) and ghrelin + SR141716A. In experiment 2, chickens received ICV injection of (A) control solution, ghrelin (0.6 nmol), AM630 (selective CB2 receptors antagonist, 1.25 µg) and ghrelin + AM630. In experiment 3, chickens were ICV injected with control solution, 2-AG (selective CB1 receptors agonist, 2µg), GSK1614343 (selective ghrelin receptors antagonist, 6 nmol) and 2-AG + GSK1614343. In experiment 4, the birds received control solution, CB65 (selective CB2 receptors agonist, 6.25 µg), CB65 + GSK1614343. Then the cumulative food intake was measured until 120 min post injection. RESULTS: According to the results, ICV injection of the ghrelin, significantly decreased cumulative food intake (P<0.05). Co-injection of the ghrelin + SR141716A and/or ghrelin + AM630 significantly amplified ghrelin-induced hypophagia compared to control group (P<0.05). Hyperphagia observed by ICV injection of the 2-AG (2 µg) (P<0.05). Co-injection of the 2-AG + GSK1614343 increased food intake compared to control group (P<0.05). ICV injection of the CB65 (1.25 µg) significantly increased food intake (P<0.05). Also, co-injection of the CB65 + GSK1614343 significantly amplified cumulative food intake in FD3 neonatal layer-type chicken (P<0.05). CONCLUSIONS: These results suggested ghrelin-induced hypophagia mediates via CB1 and CB2 receptors in neonatal layer-type chicken

https://ijvm.ut.ac.ir/article_71571_3dbd16bd04967fc112d9772f027d0869.pdf

University of Tehran Iranian Journal of Veterinary Medicine 2251-8894 13 2 2019 04 01 Seasonal Variation and Relationships Between Copper of Serum and Various Tissues in Copper Poisoned Sheep in Kerman Province, Iran تغییرات فصلی و ارتباط بین مس سرم و بافت های مختلف در گوسفندان مسموم با مس در استان کرمان، ایران 163 173 71535 10.22059/ijvm.2018.261446.1004911 EN Seyyed Javad Afsah Hejri Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, Shiraz, Iran Khalil Badiei Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, Shiraz, Iran Mehrdad Pourjafar Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, Shiraz, Iran Ahmad Oryan Department of Comparative Pathology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran Behnam Keshavarzi Department of Environmental Geology, Shiraz University, Shiraz, Iran Aliasghar Chalmeh Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, Shiraz, Iran Gholamreza Mesbah Department of Comparative Pathology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran Journal Article 2019 01 14 Background: Soil and plant contamination in copper exposure causes chronic copper poisoning (CCP) in animals following the consumption of plants in these soils. Objectives: The present study was carried out on 10 clinically affected copper poisoned cases (in each season) from autumn 2015 to the end of summer 2016, in four seasons in Kerman province to evaluate the seasonal effects of CCP in sheep. Methods: All samples were taken from clinically affected cases of copper poisoning that were then necropsied and the poisoning was confirmed by pathognomic pathological findings and serum copper concentration. Samples from liver, lung, kidney, heart and spleen were collected immediately after death and their copper concentration was measured. Results: The highest levels of copper in lung, heart, spleen and kidney were observed in the summer. Liver had the highest amounts of copper in spring and the levels of copper in wool and serum were detected in winter. The copper levels of liver and kidney were positively correlated in autumn, but the copper levels in these tissues were negatively correlated in both spring and winter. Conclusions: Severity of the copper toxicity (judged by the liver copper concentration) is season-dependent in sheep and seasonal variations affect this toxicity. Environmental climate and stressors may be the main causes of copper contents of different tissues and the liver is the main organ to reserve copper in poisoned sheep.

https://ijvm.ut.ac.ir/article_71535_3767c440b6b511ebf6c7364425fa726b.pdf

University of Tehran Iranian Journal of Veterinary Medicine 2251-8894 13 2 2019 04 01 Effect of Polyethylene Glycol and Senna Bowel Preparation in Dogs on Some Hematological and Serum Biochemical Parameters تأثیر آمادهسازی روده با پلیاتیلنگلیکول و سنا در سگ بر برخی پارامترهای بیوشیمیایی و هماتولوژی سرم 175 185 71291 10.22059/ijvm.2019.259726.1004901 EN Majid Zakerian MVSc Graduated of Small Animal Internal Medicine, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran Reza Avizeh Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz. Ahvaz, Iran Alireza Ghadiri Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz,Iran Mohammad Razi Jalali Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz,Iran Mahdi Pourmahdi Department of Food Hygiene, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran Hosein Najafzadeh Department of Basic Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran Journal Article 2019 01 09 <span style="color: windowtext; text-transform: uppercase; font-family: 'Times New Roman','serif'; font-size: 12pt; mso-ascii-theme-font: major-bidi; mso-hansi-theme-font: major-bidi; mso-bidi-font-family: TimesNewRomanPS-BoldMT;">Background: Colonoscopy is the preferred procedure for diagnosis of large-bowel diseases in dogs. Polyethylene glycol (PEG) is the most commonly used laxative for colonic cleansing. Senna has been used in traditional medicine as a laxative and an aid to treat constipation. OBJECTIVES: The aim of this study was to evaluate the safety of senna as an alternative or adjunct to polyethylene glycol solution in dogs using hematology and biochemistry. METHODS: For this purpose, 20 mongrel dogs were randomly allocated to receive 1 of 4 different bowel preparation regimens including PEG, senna or their combinations plus enema. Serum concentrations of sodium, potassium, total calcium, phosphorus, chloride, magnesium, PCV, total protein, ALT, AST, BUN and creatinine were measured at 0, 1, 2, 5, 6 and 24 hours after the first ingestion of laxative solutions. RESULTS: Statistical analysis showed that PEG or senna solutions had no significant effect on serum concentration of the evaluated parameters (P>0.05). Despite the significant changes in serum concentration of all measured parameters based on time of sampling in all groups, they were in their normal ranges (P>0.05). CONCLUSIONS: This is the first evaluation of the safety of bowel preparation with senna in dogs. This study showed that the use of PEG and senna for colon cleansing in dogs did not have any deleterious effects on their serum biochemical and electrolytes concentration.

https://ijvm.ut.ac.ir/article_71291_191a5af85af75236d3275d718a2a8c56.pdf

University of Tehran Iranian Journal of Veterinary Medicine 2251-8894 13 2 2019 04 01 Comparison of Two Veterinary Blood Glucose Meters and One Human-Based Glucose Meter for Use in Dogs مقایسه نتایج حاصل از دو دستگاه گلوکومتر دامپزشکی و یک دستگاه گلوکومتر انسانی برای اندازه گیری گلوکز خون سگ ها 187 198 71570 10.22059/ijvm.2019.266543.1004928 EN Sina Jahan Department of Internal Medicine, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran Shahram Jamshidi Department of Internal Medicine, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran Maysam Tehranisharif Department of Pathobiology, Faculty of Veterinary Medicine, Islamic Azad University, Garmsar Branch, Garmsar, Iran Hesameddin Akbarein Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran Journal Article 2018 12 24 Background: Recently, tendency to use veterinary specific Portable blood glucose meter (PBGMs) has increased. However, assessment of their analytical and clinical accuracy is a matter of concern. OBJECTIVES: To assess accuracy of two veterinary (AlphaTRAK2 and CERA-PET) and one human-based (Bionime) PBGMs for canine blood samples. METHODS: In this cross-sectional study, a total of 160 client-owned dogs with various signalment and disease were included. Venous blood samples were obtained from a peripheral vein of each dog and blood glucose was measured with the three PBGMs. Immediately afterward, serum was harvested and sent to laboratory until analysis with reference methods. RESULTS: Blood glucose measured with the reference method was 21 to 650 mg/dl. There was a significant correlation between results of the reference method and PBGMs. Both of the veterinary specific PBGMs showed significant proportional and constant bias, nevertheless, no proportional and constant bias were recorded for human-based one. Mean deviation from reference methods was -7.4, 9.8, and -3.9 for AlphaTRAK2, CERA-PET, and Bionime respectively. Although most of the PBGMs readings lay in the calculated 95% limits of agreement, none of the devices completely satisfied the International Organization for Standardization (ISO 15197:2013) criteria. Error grid analysis revealed all measurements for AlphaTRAK2 in zone A and B, while CERA-PET demonstrates one measurement in zone D. Bionime showed two measurements in zone C and D. CONCLUSIONS: Only the result of AlphaTRAK2 could be interpreted without any hazardous outcome on medical decision making.

https://ijvm.ut.ac.ir/article_71570_c36dc073e6a69708eca3b141193e5f29.pdf

University of Tehran Iranian Journal of Veterinary Medicine 2251-8894 13 2 2019 04 01 Efficacy of Different Blends of Essential Oils on Growth Performance, Blood Metabolites, Gut Microflora, and Meat Quality of Broilers اثر مخلوط اسانسهای گیاهی بر عملکرد رشد، متابولیتهای خونی، فلور میکروبی روده و کیفیت گوشت جوجه های گوشتی 199 215 71569 10.22059/ijvm.2019.270128.1004944 EN Maziar Mohiti Asli Department of Animal Science, Faculty of Agriculture Science, University of Guilan Milad Khedmatgozar Department of Animal Science, Faculty of Agriculture Science, University of Guilan Hassan Darmani Kuhi Department of Animal Science, Faculty of Agriculture Science, University of Guilan Mohsen Farzaneh Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Tehran, Iran Journal Article 2018 12 11 Background: The application of phytogenic additives in the form of essential oils have attracted considerable attention in poultry industry. OBJECTIVES: An experiment was conducted to evaluate effects of the blends of essential oils (EO) isolated from some medicinal plants including savory, thyme, fennel and rosemary on performance, blood metabolites, intestinal microflora, and meat quality of broilers. METHODS: Two hundred 1-day-old broilers were randomly allocated to 5 treatments with 4 replicates of 10 chicks. The dietary treatments included 1) NC (negative control; without EO), 2) PC (positive control; 300 mg commercial EO of oregano/kg diet), 3) SR (300 mg EOs of savory and rosemary/kg diet), 4) SRT (300 mg EOs of savory, rosemary and thyme/kg diet), 5) SRTF (300 mg EOs of savory, rosemary, thyme and fennel/kg diet). RESULTS: Neither PC nor combinations of EOs affected growth performance of broilers. Serum cholesterol reduced (P<0.05) by feeding the blend of EOs compared with NC. The lowest ileal Lactobacillus counts were observed in chicks fed diets supplemented with EO of oregano or SR (P<0.05). Dietary supplementation of oregano EO decreased (P<0.05) lipid peroxidation of thigh meat after 30 and 60 days of frozen storage compared with NC group. CONCLUSIONS: Broilers fed diets supplemented with EOs of oregano or SR had the lowest ileal Lactobacillus spp. counts probably due to their large amount of carvacrol contents which suppress growth and proliferation of Gram-positive bacteria. Contrary to blended EOs, oregano EO did not reduce serum cholesterol concentration, suggesting hypocholesterolemic effect of other compounds except carvacrol in EOs. The highest stability to meat oxidation was achieved in oregano EOs-fed broilers. This antioxidative effect was lower in treatments with less carvacrol contents

https://ijvm.ut.ac.ir/article_71569_3815874b65cb588b50b26ec3bf561a1e.pdf

University of Tehran Iranian Journal of Veterinary Medicine 2251-8894 13 2 2019 04 01 Antioxidant Potential of Eugenia caryophyllus, Satureja hortensis and Artemisia dracunculus Essential Oils in Grape Seed Oil بررسی پتانسیل آنتی اکسیدانی اسانس های میخک، مرزه و ترخون در روغن هسته انگور 217 227 71492 10.22059/ijvm.2019.266294.1004927 EN Maryam Azizkhani 1Department of Food Hygiene, Faculty of Veterinary Medicine, Amol University of Special Modern Technologies, Amol, Iran Shiva Puramin Department of Food Sciences and Technology, Faculty of Agriculture, Khazar Institute of Higher Education, Mahmoudabad, Iran Journal Article 2018 12 09 BACKGROUND: Autoxidation is an irreversible reaction which occurs with the effect of oxygen in the air, and results in unpleasant taste and smell that are known as the signs of rancidity in oil. OBJECTIVES: In this study, the antioxidant potential of clove, summer savory and tarragon essential oils (EOs) in grape seed oil was evaluated. METHODS: Effects of EOs at different concentrations (0.3, 0.5, 1, and 1.5 %, v/v) on peroxide value (PV) and thiobarbituric acid reactive substances (TBARS) of grape seed oil at 60 ºC were investigated. RESULTS: Results showed 1.5% clove showed the lowest PV (52.13 meq/kg) at the end of the period. Among EO- treated samples, the highest PV was seen in samples treated with tarragon. There was no significant difference between the TBARS of samples containing 1% clove and 1.5% savory at day 10 of storage. TBARS of clove treated samples increased slightly toward the end of storage and similar trend was observed for savory-treated samples. TBARS values of tarragon treated samples at each storage time were higher than those for clove and savory EOs. CONCLUSIONS: The antioxidant activity of EOs in grape seed oil was as follows: clove > summer savory > tarragon.

https://ijvm.ut.ac.ir/article_71492_bfde279dde070e443676f0d6dfed08dd.pdf