检索结果-南通市图书馆

Assessment of Some Heavy Metals Concentration and Antioxidant Activity in Barley Grain Cultivars and Their Malts from Iran

引用

Journal of Agricultural Chemistry and Environment 2016年第3期5卷 121-131页

作者： Naficeh Sadeghi Mohammad Reza Oveisi behrooz Jannat Manan Hjimahmoodi Neda Malayeri Masoomeh Behzad Department of Drug and Food Control School of Pharmacy Tehran University of Medical Sciences Tehran Iran Water Health Research Center Ministry of Health and Medical Education Tehran Iran Halal Research Center Ministry of Health and Medical Education Tehran Iran

Global industrialization could be considered as a major cause of environmental contamination with heavy metals. Barley and malt, vastly used in the food industries, are of no exception. Therefore, we aimed to measure the levels of trace elements Zinc, Copper and heavy metals Lead and Cadmium by Differential Pulse Anodic Stripping Voltammetry in 19 barley grain cultivars and their malts in Iran. Ferric reducing antioxidant power (FRAP) assay was also used for determination of antioxidant activity of the samples. The mean levels of Zn, Cd, Pb and Cu were measured to be 18.813 ± 8.575, 0.212 ± 0.116, 0.278 ± 0.163, 3.746 ± 1.118 mg/100g in the barley samples and 14.364 ± 6.391, 0.153 ± 0.098, 0.179 ± 0.082 and 3.033 ± 1.392 mg/100g in the malt samples, respectively. The highest concentration of Zn was measured in the Bahman cultivar of barley and Mb-82-4 sample of malt while the Sahra cultivar of barley and Valfajr sample of malt had the lowest concentration of Pb and the Nimrooz cultivar of barley and Rihane-03 sample of malt had the lowest concentration Cu. The mean levels of zinc and lead in the evaluated samples of barley and the mean levels of zinc, lead and cadmium in the samples of malt were significantly lower than standard limits. Although not significant, the mean levels of cadmium in barley samples and copper in malt samples were higher than the standard limits, but the mean level of copper was found to be significantly higher than the standard limits in the samples of barley (p = 0.008). Antioxidant acitivity was found to be highest in the Mb-82-12 sample of malt and Nik cultivar of barley. The average antioxidant activity was found to be significantly higher in the malt compared to barley grain;1.584 ± 0.596 mg/kg vs. 0.633 ± 0.221 mg/kg (p < 0.001). The mean level of copper in barley samples was significantly higher than the standard limit that needs further investigations to be controlled.

关键词： Barley Cadmium Copper Lead Malt Voltammetry Zinc

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Tyramine in Malt Beverages Interfering with Monoamine Oxidase Inhibitor Drugs

引用

Journal of Biosciences and Medicines 2016年第8期4卷 10-16页

作者： Naficeh Sadeghi Mohammad Reza Oveisi behrooz Jannat Masoomeh Behzad Mannan Hajimahmoodi Esmaeel Zareakram Department of Drug and Food Control School of Pharmacy Tehran University of Medical Sciences Tehran Iran Water Health Research Ministry of Health and Medical Education Tehran Iran Halal Research Center Ministry of Health and Medical Education Tehran Iran

The objective of this review is the determination of tyramine in 13 nonalcoholic beers (Maoshaieer) of Tehran market and survey of it’s probably interaction with monoamine oxidase inhibitor drugs (MAOIs) has been investigated. Tyramine was at the highest levels in Baltika (111.34 ± 8.19 μg/ml) and at the lowest level in Bitmalt (8.01 ± 2.09 μg/ml). Comparing different flavors of malt drinks, the highest tyramine content was shown for classic or normal flavor (average 72.99 ± 30.87 μg/ml), while the lowest value belonged to cantaloupe flavored drinks (average 10.55 ± 1.29 μg/ml). In our study, it is seen that there is a significant difference between import and Iranian non-alcoholic beers, the import ones has more tyramine than Iranians. A number of 10 kinds of 13 samples interact whit MAOIs in one serving (250 ml) usage 18.50 mg. The highest tyramine content of Iranian ones is 17.74 mg/250ml and for import ones is 27.83 mg/250ml.

关键词： Tyramine Monoamine Oxidase Inhibitor Drugs Maoshaieer Nonalcoholic Beer

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Investigation of the Removal Efficiency of C.I Acid Red 88 by Coupling Electrocoagulation with UV/H2O2

Investigation of the Removal Efficiency of C.I Acid Red 88 b...

引用

2012 4th International Conference on Chemical,Biological and Environmental Engineering

作者： behrooz Khezri Nasser Modirshahla Mohammad A. Behnajady Marziyeh Gassabi Department of Chemistry Mahabad BranchIslamic Azad UniversityMahabadIran Department of Applied Chemistry Tabriz BranchIslamic Azad UniversityTabrizIran

The aim of this study was to investigate the decolorization of Acid Red 88 (AR88) using electrocoagulation and photoelectrocoagulation *** effect of operational parameters such as initial dye concentration,electrolysis time and electrolyte concentration was studied .The electrochemical cell comprised Al as cathode and Fe as anode which were placed inside a container having a low pressure mercury lamp at the top.40 mg L-1 of dye solution was withdrawn for each experiment and after adjusting the electrode distance to 15 mm,current density to 41.8 A m-2,different electrolytes at varying concentrations were added and the absorbance was measured at several reaction *** results showed that electrocoagulation was more effective than photoelectrocoagulation using NaBr,KBr,NaCl and KCl as electrolytes and decolorization rate increased with increasing electrolyte *** also revealed that the coupled system was more satisfactory than electrocoagulation method with Na2SO4 as an *** the coupled system with NaF electrolyte showed better decolorization rate than electrocoagulation,but the decolorization rate was higher at low concentrations of ***,it is concluded that electrocoagulation was more effective than coupled system in most cases and type of electrolyte plays an important role since employed NaCl/KCl would enhance the decolorization rate considerably.

关键词： Electrocoagulation,Photoelectrocoagulation,Decolorization,Coupling,Acid Red 88.

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Attenuation and penetration of pulsed supersonic liquid jets-an experimental study

Attenuation and penetration of pulsed supersonic liquid jets...

引用

The 24th International Symposium on Shock Waves

作者： K.Pianthong K.Takayama B.E.Milton M.behnia Department of Mechanical Engineering Ubon Ratchathani University34190Thailand Shock Wave Research Center Institute of Fluid ScienceTohoku UniversitySendaiJapan School of Mechanical and Manufacturing Engineering The University of New South WalesSydney2052Australia

Pulsed supersonic liquid (water and diesel fuel) jets in the range of 1500 m/s to 1800 m/s have been produced and examined. A two stage light gas gun was used as a launcher to obtain the pulsed impact (velocity of 700m/s). In this paper, experimental results on the attenuation and the penetration distance of the liquid jets is presented. It was found that the attenuation is relatively high in the first 300 μs of the jet flight. The penetration distance is around 300-500 mm, this depending on the initial velocity, the nozzle geometry and the properties of liquid. The experimental results agree well with the estimation using conventional diesel spray formula. The shadowgraph image shows bow shock wave structures with multiple pulses which tend to enhance atomization and combustion. However, further examination of their atomization related to the jet attenuation and penetration distance is needed.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Total Phenolic, Flavonoids, Tannin Content and Antioxidant Power of Some Iranian Pomegranate Flower Cultivars (<i>Punica granatum</i>L.)

引用

American Journal of Plant Sciences 2013年第9期4卷 1815-1820页

作者： Mannan Hajimahmoodi Ghazaleh Moghaddam Ali Mohammad Ranjbar Hossein Khazani Naficeh Sadeghi Mohammad Reza Oveisi behrooz Jannat Department of Biology Tarbiat Moalem University Tehran Iran Department of Drug and Food Control Faculty of Pharmacy Tehran University of Medical Sciences Tehran Iran Ministry of Health and Medical Education Research Center Tehran Iran.

Recently, pomegranate (Punica granatum L.) was demonstrated to be high in antioxidant activity and strong in phenolic, flavonoid and tannin contents in its fruit, flower and also aerial part. In this paper six cultivars of Iranian pomegranate flower including Ghojagh, Rabbab, Malas, Shishegap, Danesiah and Golnar have been investigated. The maximum amount of total phenolic was detected in Ghojagh (25.94 mg·GAEg-1) and flavonoid showed the highest content in Danesiah (23.06 mg·CEg-1). The lowest content of these two groups was observed in Golnar (15.19 mg·GAEg-1 and 11.46 mg·CEg-1). Measurement of tannin compounds showed that Rabbab by 2.03% and Golnar by 1.06% have the highest and lowest amount respectively. According to the FRAP method, Ghojagh and Golnar have the highest and lowest antioxidant values respectively (452.53 mmol·g-1 and 123.39 mmol·g-1). As a result of HPLC-DPPH method, Malas and Danesiah have the highest and lowest antioxidant value (116.38 and 97.64 mgVEEg-1).

关键词： Pomegranate Flower Antioxidant Phenolic HPLC

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Trans Fatty Acid Content of Iranian Edible Oils

引用

Food and Nutrition Sciences 2013年第11期4卷 1167-1174页

作者： Mannan Hajimahmoodi Sarvenaz Arami Marzieh Nosrati Ghazaleh Moghaddam Naficeh Sadeghi Mohammad Reza Oveisi behrooz Jannat Fatemeh Zamani Mazdeh Department of Drug and Food Control Faculty of Pharmacy Tehran University of Medical Sciences Tehran Iran Department of Drug and Food Control Faculty of Pharmacy Tehran University of Medical Sciences Tehran Iran Persian Medicine and Pharmacy Research Center Tehran University of Medical Sciences Tehran Iran Food and Drug Administration Tehran University of Medical Sciences Tehran Iran Ministry of Health and Medical Education Research Center Tehran Iran

Clinical and epidemiologic studies showed that among dietary factors the type of fatty acids (FAs) in the diet plays an important role in determining risk of chronic disease. The aim of our study was to determine the levels of Trans FA (TFA) in edible oil samples consumed in Tehran, Iran analyzed by gas chromatograph (GC). The mean of total TFA was 0.45% ranging from (0.11% - 1.61%) for liquid frying oils and 2.92% ranging from (0.46% - 5.40%) for solid oils. The major TFA observed in these two groups was elaidic acid in solid oils. The highest content of total saturated fatty acid (SFA) was detected in solid oils with average of 32.07 and palmitic acid was the major SFA in these four groups. Linoleic and linolenic acid are the most important poly unsaturated fatty acid (PUFA). The variance in the percentage of TFA in the edible oils probably resulted from differences in the type of oils, quality, heating, processing technique and storage condition of the edible oils. The results indicated that, edible oils contain considerable proportions of trans fatty acids. Therefore, it is important to assess the content of TFA in edible oils in Iran.

关键词： Trans Fatty Acid Gas Chromatography Solid Oil Liquid Frying Oil

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Opium withdrawal and some blood biochemical factors in addicts' individuals

引用

Advances in Biological Chemistry 2012年第2期2卷 167-170页

作者： Mehdi Mahmoodi Seyed-Mostafa Hosseini-Zijoud Javad Hosseini Ahmadreza Sayyadi Mohammadreza Hajizadeh Gholamhossein Hassanshahi behrooz Hashemi Clinical Biochemistry Department Of Biochemistry Biophysics & Genetics Faculty of Medicine Rafsanjan Iran Clinical Biochemistry Molecular Medicine Research Center Rafsanjan University of Medical Sciences Rafsanjan Iran Department of Biochemistry Biophysics & Genetics Faculty of Medicine Rafsanjan University of Medical Sciences Rafsanjan Iran Department of Psycho-Nursing Faculty of Nursing Midwifery and Paramedics Rafsanjan University of Medical Sciences Rafsanjan Iran Emergency Medicine Specialist Shohada-e-Tajrish Hospital Tehran Iran Molecular Medicine Research Center Rafsanjan University of Medical Sciences Rafsanjan Iran

Objective: One of the common misinterpretation be- liefs in some societies (especially eastern communities) is the using of opium can reduce serum glucose and lipids. Opium is a derivative from a plant family called Papaveracea and contains almost 80 types of alkaloids. Drug addiction causes physiological dependency and its withdrawal lead to some disorders. The aim of this study was to determine the effects of opium consumption and its withdrawal on some blood biochemical factors in addicted people. Methods: We enrolled fifty-six opium addicted people according to the especial criteria to this study. Biochemical blood parameter levels such as fasting blood sugar (FBS), urea, Creatinine (Cr), Aspartate transaminase (AST), Alanine transaminase (ALT) and Alkaline phosphatase (ALP) enzymes levels were measured and urine analysis was also performed before and 3 months after withdrawal. Data were analyzed by using SPSS software version 18 and a P < 0.05 was considered as significant. Results: our finding showed that opium withdrawal reduces FBS and increases AST but these changes were not significant. Nevertheless opium withdrawal significantly increased blood urea level (P < 0.0001). We didn’t find any significant difference in Cr, ALP, AST and Urea specific gravity (SG). Conclusion: According to the results of the current study we can concluded that opium increases FBS, which is in contrast to the most previous studies and withdrawal has opposite effects.

关键词： Opium Addiction Withdrawal Fasting Blood Sugar (FBS)

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A comparison of culture and PCR methods for identification of Aggregatibacter actinomycetemcomitans isolated from acute necrotizing ulcerative gingivitis

引用

Journal of Acute Disease 2018年第3期7卷 126-129页

作者： Maryam Ramez Faramarz Masjedian Jazi Hamed Tavakoli Abazar Pournajaf Gholamreza Irajian Meysam Hasannejad Bibalan Behzad Emadi behrooz Yasini Department of Microbiology School of Basic SciencesIslamic Azad UniversityJahrom BranchJahromIran Department of Microbiology School of MedicineIran University of Medical SciencesTehranIran Clinic of Imam Khomeini Tehran Iran Department of Microbiology Faculty of MedicineBabol University of Medical SciencesBabolIran Department of Microbiology Faculty of MedicineGuilan University of Medical SciencesRashtIran Department of Microbiology School of MedicineIran University of Medical SciencesInternational campusTehranIran

Objective: To determine Aggregatibacter actinomycetemcomitans (A. actinomycetemcomitans) isolated from periodontal patients and healthy subjects using culture and PCR methods. Methods: Duplicate paper point needles were taken from 100 samples (50 healthy subjects and 50 patients), who referred to the specialized dental clinic from Oct. 2015 to Mar. 2016. In laboratory after incubation period and observing the star-shaped colony A. actinomycetemcomitans, the confirmation tests, including gram staining and catalase test were carried out. For PCR, samples were analyzed with genus specific primers. These primers set, amplified a 500 bp fragment. Results: Of the 100 samples, A. actinomycetemcomitans was isolated from 31 patients (31%), (24 isolate of patients, and 7 isolate of healthy subjects) by using a selective Aggregatibacter isolation medium. Using PCR, a total of 49 (49%) samples were found to be positive for A. actinomycetemcomitans (35 isolate of patients, and 14 isolate of healthy subjects). Conclusion: PCR was found to be highly sensitive when genus specific primers were used for diagnosis of A. actinomycetemcomitans in comparison with culture method.

关键词： Aggregatibacter actinomycetemcomitans PCR Culture

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Homogenization and Structural Topology Optimization: Theory, Practice and Software 1

引用

1999年

作者： behrooz Hassani MSc PhD Ernest Hinton BSc MSc PhD DSc CEng MIStructE MBCS (auth.)

来源：畅想之星图书光盘版（南... 评论

在线全文

畅想之星图书光盘版（南通市图书馆镜像）

学校读者我要写书评

暂无评论

让自动驾驶汽车 "看透" 拐角

引用

科技纵览 2022年第2期 36-41页

作者： behrooz Rezvani Babak Hassibi Fredrik Brannstrom Majid Manteghi 不详

要让自动驾驶汽车名副其实,需满足诸多要求,但毫无疑问,对环境的感知和了解最为关键.自动驾驶汽车必须跟踪并识别多个物体和目标,无论其清晰可见还是隐而不见,无论艳阳高照还是狂风暴雨.光靠如今的雷达还远不足以实现这种效果,我们还需... 详细信息

要让自动驾驶汽车名副其实,需满足诸多要求,但毫无疑问,对环境的感知和了解最为关键.自动驾驶汽车必须跟踪并识别多个物体和目标,无论其清晰可见还是隐而不见,无论艳阳高照还是狂风暴雨.光靠如今的雷达还远不足以实现这种效果,我们还需要摄像头和激光雷达,但若能充分利用雷达的特殊优势,也许至少可以省去部分辅助传感器.

关键词：激光雷达自动驾驶汽车摄像头传感器特殊优势名副其实跟踪

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：