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Synthesis, Characterization and Biological Evaluation of Benzimidazole and Benzindazole Derivatives as Anti-hypertensive Agents 苯并咪唑及其衍生物抗高血压药物的合成、表征及生物学评价
Pub Date : 2021-06-14 DOI: 10.21608/EJCHEM.2021.79840.3931
Silky Sethy, S. Mandal, E. Ewies, Neerupma Dhiman, A. Garg
A substituted benzimidazole and benzindazole derivatives had been synthesized having antihypertensive activity through antagonizing the angiotensin II (Ang II) receptors. The in vivo antihypertensive activity of the compounds was done with acute renal hypertension model. Two compounds TG 1 and TG 3 were found to have antihypertensive activity comparable to Telmisartan which is a prototype for Angiotensin II receptor antagonists class of drugs.In an antihypertensive study the compounds TG 1, TG 2 and TG 3 had systolic blood pressures of 147.2 mm/Hg, 168.2 mm/Hg, and 126.3 mm/Hg, respectively. This systolic blood pressure was lower than the disease control vehicle-treated rodents, which had a systolic blood pressure of 167.2 mm/Hg. The diastolic blood pressure was 119.7 mm/Hg, 124.7 mm/Hg and 88.83 mm/Hg, respectively and that of the disease control vehicle-treated rodents was 122.3 mm/Hg. TG 3 had comparable decrease in the MABP to Telmisartan. These encouraging results make compound TG 3 effective anti-hypertensive drug candidate and worthy of further investigation.
本文合成了一种取代苯并咪唑和苯并咪唑衍生物,通过拮抗血管紧张素II (Ang II)受体而具有降压活性。用急性肾性高血压模型研究了化合物的体内降压活性。两种化合物TG 1和TG 3被发现具有与替米沙坦相当的降压活性,替米沙坦是血管紧张素II受体拮抗剂类药物的原型。在一项降压研究中,化合物TG 1、TG 2和TG 3的收缩压分别为147.2 mm/Hg、168.2 mm/Hg和126.3 mm/Hg。这一收缩压低于疾病对照组,后者的收缩压为167.2 mm/Hg。实验组舒张压分别为119.7 mm/Hg、124.7 mm/Hg和88.83 mm/Hg,对照组舒张压为122.3 mm/Hg。与替米沙坦相比,TG 3在MABP上有相当的下降。这些令人鼓舞的结果使复方甘油三酯成为有效的抗高血压候选药物,值得进一步研究。
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引用次数: 1
A minireview on Applications of the metal-organic framework and carbon dots in dye photodegradation to protect the aquatic environment from organic pollutants 金属有机骨架和碳点在染料光降解中的应用综述
Pub Date : 2021-06-13 DOI: 10.21608/EJCHEM.2021.72540.3602
Amira Abd Elkhalk, Mohamed Batiha
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引用次数: 0
Optimized Synthesis of Biopolymer-Based Zinc Oxide Nanoparticles and Evaluation of Their Antibacterial Activity 生物聚合物基氧化锌纳米颗粒的优化合成及其抗菌活性评价
Pub Date : 2021-06-13 DOI: 10.21608/EJCHEM.2021.75677.3709
T. Hassanein, A. Mohammed, Wael Sabry Mohamed, R. Sobh, Magdy, Kandil Zahran
Owing to their unique properties, zinc oxide nanoparticles (ZnO NPs) have a broad range of exciting applications. However, the problem of nanoparticles aggregation remains challenging. So, biopolymers of polysaccharides can provide green and promising stabilizers as alternatives to the current toxic chemical stabilizers during ZnO NPs synthesis. The main idea in this investigation is to tune ZnO NPs with an appropriate texture, shape, and size for antibacterial application. So, this work compares the use of three different eco-friendly stabilizers namely starch, carboxymethyl cellulose, and hydroxyethyl cellulose as alternatives capping agents in the fabrication of ZnO NPs at various times. The optimized ZnO NPs sample was obtained using starch as the optimum stabilizer at reaction conditions of 0.5 h, room temperature (25 °C), 1:2 )MZn:MNaOH) ratio and 1% (w/v) starch concentration. The optical, texture, and structural properties of prepared ZnO NPs were characterized by UV–Vis, DLS, zeta potential, FT-IR, and TEM techniques. ZnO NPs showed a mean zeta potential of −21.6 mV, explaining that they are moderately stable. The analysis by TEM confirmed that the NPs were spherical and have an average size of 23 nm. The antibacterial properties of ZnO NPs against Gram-positive (Bacillus subtilis and Staphylococcus epidermidis) and Gramnegative (Enterobacter cloacae and Escherichia coli) bacteria were evaluated based on the zone of inhibition (ZOI) values expressed in mm. The results showed promising performances for their antibacterial activity against the tested bacteria which indicated a strong antibacterial activity of ZnO NPs against B. subtilis, S. epidermidis, and E. cloacae with ZOI values of 17, 14 and 16 mm, respectively, and it showed moderate activity against E. coli (ZOI = 10 mm). The synthesis of biopolymer stabilized ZnO NPs by this approach could be eco-friendly and cost-effective and synthesized ZnO NPs can serve as promising antibacterial agents.
氧化锌纳米颗粒(ZnO NPs)由于其独特的性能,具有广泛的应用前景。然而,纳米颗粒的聚集问题仍然具有挑战性。因此,多糖生物聚合物可以替代目前有毒的化学稳定剂,在ZnO NPs合成过程中提供绿色和有前途的稳定剂。本研究的主要思想是调整ZnO NPs具有适当的结构,形状和尺寸,以用于抗菌应用。因此,本研究比较了三种不同的生态友好型稳定剂,即淀粉、羧甲基纤维素和羟乙基纤维素在不同时间作为ZnO NPs制备的替代封盖剂的使用。以淀粉为最佳稳定剂,在反应条件为0.5 h、室温(25℃)、1:2 MZn:MNaOH比和1% (w/v)淀粉浓度的条件下,得到了优化的ZnO NPs样品。利用UV-Vis、DLS、zeta电位、FT-IR和TEM等技术对制备的ZnO纳米粒子的光学、织构和结构性质进行了表征。ZnO NPs的平均zeta电位为- 21.6 mV,说明它们是中等稳定的。TEM分析证实NPs为球形,平均尺寸为23 nm。通过对革兰氏阳性菌(枯草芽孢杆菌和表皮葡萄球菌)和革兰氏阴性菌(阴沟肠杆菌和大肠杆菌)的抑制区(ZOI)值(以mm为单位表示)对氧化锌NPs的抑菌性能进行了评价。结果表明,氧化锌NPs对所测细菌的抑菌活性较强,对枯草芽孢杆菌、表皮葡萄球菌和阴沟肠杆菌的ZOI值均为17;分别为14和16 mm,对大肠杆菌(ZOI = 10 mm)有中等活性。利用该方法合成的生物聚合物稳定ZnO纳米粒子具有生态友好、经济高效的特点,可以作为一种很有前景的抗菌剂。
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引用次数: 10
Seawater Reinforces Synthesis of Mesoporous and Microporous Zeolites from Egyptian Fly Ash for Removal Ions of Cadmium, Iron, Nickel, and Lead from Artificially Contaminated Water 海水强化埃及飞灰合成介孔和微孔沸石去除人工污染水中镉、铁、镍和铅离子
Pub Date : 2021-06-13 DOI: 10.21608/EJCHEM.2021.73834.3661
L. Ibrahim, E. ElSayed
This study focuses on the production of mesoporous and microporous zeolites via fusion pre-treating fly ash with NaOH followed by hydrothermal treatment utilizing seawater. Three pretreatments for fly ash were carried out utilizing 1:1, 1.2:1, and 1.4:1 of NaOH:fly ash ratio to compare the removal efficiency for cadmium Cd(II), iron Fe(II), nickel Ni(II), and lead Pb(II) from artificially contaminated water. The impacts of several variables including concentrations, weights, pH, and contact times were examined to acquire knowledge on the adsorption rate. X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM), and Brunaauer-Emmett-Teller (BET) were utilized to investigate zeolite structures. N2 adsorption/desorption isotherms demonstrated that the synthetic zeolites were mesoporous and microporous materials with a higher specific area (347, 240, and 127 m2/g) than the values for raw fly ash (15m2/g). The X-ray diffraction outcome suggested that the synthetic products mainly belonged to phillipsite, carbonate cancrinite, and hydroxysodalite. These outcomes showed that fly ash and seawater from power plants are appropriate for synthesizing high-quality zeolites. For contaminated water treatment, the products are effective for removal Cd(II), Fe(II), Ni(II), and Pb(II) at pH 7, contact time 45 min, and dose 1 g/L. Zeolites recycling outcomes showed that the removal efficiency of investigated metal ions by Z1, Z2, and Z3 was reduced by an average of 7%, 5%, and 3% after regeneration.
本文主要研究了用NaOH对粉煤灰进行熔融预处理,然后利用海水进行水热处理制备介孔和微孔沸石。采用NaOH:粉煤灰比为1:1、1.2:1和1.4:1的粉煤灰预处理方法,比较了粉煤灰对人工污染水中镉Cd(II)、铁Fe(II)、镍Ni(II)和铅Pb(II)的去除率。考察了包括浓度、重量、pH和接触时间在内的几个变量对吸附速率的影响。采用x射线衍射(XRD)、扫描电镜(SEM)和BET (brunaauer - emmet - teller)对沸石结构进行了表征。N2吸附/解吸等温线表明,合成沸石为介孔和微孔材料,比面积(347、240和127 m2/g)高于原粉煤灰(15m2/g)。x射线衍射结果表明,合成产物主要为菲利普石、碳酸盐癌质岩和羟基钠石。结果表明,粉煤灰和电厂海水是制备高质量沸石的合适原料。在pH为7、接触时间为45 min、投加量为1 g/L的条件下,产品对Cd(II)、Fe(II)、Ni(II)、Pb(II)具有较好的去除效果。沸石回收结果表明,再生后Z1、Z2和Z3对所研究金属离子的去除率分别平均降低7%、5%和3%。
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引用次数: 2
Metabolic syndrome and the risk of kidney diseases: the impact of life style modification 代谢综合征与肾脏疾病的风险:生活方式改变的影响
Pub Date : 2021-06-09 DOI: 10.21608/EJCHEM.2021.78093.3818
M. Abdel-Moaty, Salwa M. El Shebini, Nihad H. Ahmed, H. Essa, S. Tapozada
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引用次数: 0
Phytochemical investigation and differential effects of Cestrum elegans isolated compounds as antimicrobial and virucidal against hepatitis A virus 秀丽弓形虫分离化合物抗甲型肝炎病毒和抗病毒作用的植物化学研究及差异效应
Pub Date : 2021-06-08 DOI: 10.21608/EJCHEM.2021.71934.3581
A. Abdel-Aziz, N. Elwan, Mona Abdel-Motagaly, S. Nasr, M. Ghareeb
A new steroidal saponin, named as (25R)-6α-[(β-D-glucopyranosyl) oxy]-5α-spirostan3β-yl β-D-glucopyranosyl (1''→3')-O-β-D-glucopyranosid (2) was isolated from the flowers of Cestrum elegans. In addition, a known steroidal saponin (1), a flavonoid compound (3) along with a triterpene saponin (4) were isolated for the first time in genus Cestrum and identified based on their chromatographic properties, chemical and spectral data (HR-ESI-MS, H, C NMR, H-H COSY, HSQC, and HMBC). The four compounds were evaluated for their antibacterial, antifungal and antiviral activities. The maximum non-toxic concentration (MNTC) on vero cell line was 1.56 μg/mL for all compounds. While, compound 1 and 3 showed antiviral activity of 34.3% and 25%, respectively.
从芦笋花中分离到一种新的甾体皂苷,命名为(25R)-6α-[(β-D-glucopyranosyl) oxy]-5α-spirostan3β-yl β-D-glucopyranosyl(1′→3′)- o - β-D-glucopyranosyl(2)。此外,还首次从该属植物中分离到一种甾体皂苷(1)、一种黄酮类化合物(3)和一种三萜皂苷(4),并根据其色谱性质、化学和光谱数据(HR-ESI-MS、H、C NMR、H-H COSY、HSQC和HMBC)进行了鉴定。对这四种化合物的抗菌、抗真菌和抗病毒活性进行了评价。所有化合物对vero细胞株的最大无毒浓度(MNTC)为1.56 μg/mL。化合物1和3的抗病毒活性分别为34.3%和25%。
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引用次数: 4
Fatty Acid and Amino Acid Composition of Citrullus Colocynthis Seeds Growing in Algeria 阿尔及利亚产瓜泥种子脂肪酸和氨基酸组成
Pub Date : 2021-06-08 DOI: 10.21608/EJCHEM.2021.73414.3627
B. Boulanouar, M. Bireche, Abdelaziz Gherib, Á. Gil-Izquierdo, R. Domínguez‐Perles, M. Ghareeb
Citrullus colocynthis is an herbaceous perennial wild species of the Cucurbitaceae family, used in traditional medicine in the treatment of diabetes mellitus. In the present work, C. colocynthis seed oils have been assessed for their fatty acids profile and concentration by Gas Chromatography–Mass Spectrometry (GC-MS), while oil and protein extracts were investigated in respect to their amino acid compositions by using Ultra HighPerformance Liquid Chromatography-Electrospray Ionization-Triple Quadrupole Mass Spectrometry (UHPLCESI-QqQ-MS/MS) instrumentation. Results revealed that the predominant fatty acids in C. colocynthis seeds were linoleic (70.7 %), oleic (10.9 %), palmitic (8.3 %), and stearic (7.8 %) acids. On other hand, the analysis of the free amino acids content noticed the presence of threonine (0.32 μgmL), valine (0.26 μgmL), and tryptophan (0.19 μgmL). Besides, the C. colocynthis seeds oil contained the non-essential amino acids like serine (0.29 μgmL), ethanolamine (0.18 μgmL), glycine (0.25 μgmL) and aspartic acid (0.12 μgmL). In conclusion, the results obtained revealed the valuable nutritional value of C. colocynthis and derived co-products, suggesting its suitability to be used as a nutritional ingredient and to be considered in the development of dietary supplements.
西葫芦是葫芦科多年生草本野生植物,在传统医学上用于治疗糖尿病。本研究采用气相色谱-质谱联用技术(GC-MS)测定了油菜籽油的脂肪酸谱和浓度,采用超高效液相色谱-电喷雾电离-三重四极杆质谱联用技术(UHPLCESI-QqQ-MS/MS)测定了油菜籽油和蛋白质提取物的氨基酸组成。结果表明,秋葵种子中主要的脂肪酸为亚油酸(70.7%)、油酸(10.9%)、棕榈酸(8.3%)和硬脂酸(7.8%)。另一方面,对游离氨基酸含量的分析发现存在苏氨酸(0.32 μgmL)、缬氨酸(0.26 μgmL)和色氨酸(0.19 μgmL)。此外,油菜籽油中还含有丝氨酸(0.29 μgmL)、乙醇胺(0.18 μgmL)、甘氨酸(0.25 μgmL)和天冬氨酸(0.12 μgmL)等非必需氨基酸。综上所述,所获得的结果揭示了巨藻及其衍生副产品的宝贵营养价值,表明其适合作为一种营养成分,并可在膳食补充剂的开发中加以考虑。
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引用次数: 3
Application of Water Safety Plans to Improve Desalination Water Supply at Matrouh Governorate, Egypt 在埃及马特鲁省应用水安全计划改善海水淡化水供应
Pub Date : 2021-06-06 DOI: 10.21608/EJCHEM.2021.76398.3738
Waleed Hosni Elsayed Mohamed, M. S. Ibrahim, R. Wahaab, Amany F. Hasballah
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引用次数: 0
Cost-effective Clean Electrochemical Preparation of Ferric Chloride and its Applications 低成本清洁氯化铁的电化学制备及其应用
Pub Date : 2021-06-06 DOI: 10.21608/EJCHEM.2021.75921.3717
M. Abdel-Fatah, S. Hawash, H. Shaarawy
In this investigation, a green, cost-effective clean electrochemical process for preparing a highly concentrated ferric chloride (FeCl3) solution has been proposed. Many operating conditions, affected the used anodic dissolution process for FeCl3 production, were studied. Generating ferrous hydroxide electrochemically then dissolving it by hydrochloric acid and oxidized with chlorine free mixed oxidant, were proceeded steps to reach the production of our target ferric chloride. It is a green, clean, and novel process because it is environmentally and industrial safer than the traditional production technology. The most important studied experimental variables were applied like applied current density, sodium chloride concentration, electrolyte pH, at the most controlling operating parameter which is optimum electrolysis time. Experimental results revealed that optimum current density was 300 mA/cm; using 30gm/L saline solution, electrodes gap distance 5 cm, and stirring rate 150 rpm at pH 6.5 for 270 minutes, respectively. At these optimal operating parameters, 40% FeCl3 concentration can be prepared to consume 202 watts/liter of high quality with low capital, & operating costs. The economic indicators show that the running cost of production of 40% ferric chloride solution using the proposed cleaner electrochemical production technology will be 241.66$/ton and the suggested price is 450$/ton with a net profit of 156$ with high cash flow using the proposed green technology. The proposed methodology for FeCl3 production reviews the importance of using cleaner production and sustainable development indicators.
在这项研究中,提出了一种绿色、经济、清洁的电化学方法来制备高浓度氯化铁(FeCl3)溶液。对影响FeCl3阳极溶解工艺的多种操作条件进行了研究。通过电化学生成氢氧化铁,用盐酸溶解,再用无氯混合氧化剂氧化,得到了我们的目标氯化铁。它是一种绿色、清洁和新颖的工艺,因为它比传统的生产技术更环保和工业安全。在最优电解时间这一最具控制性的操作参数下,应用了最重要的实验变量如外加电流密度、氯化钠浓度、电解液pH。实验结果表明,最佳电流密度为300 mA/cm;采用30gm/L生理盐水溶液,电极间距5cm,搅拌速度150rpm, pH 6.5,分别搅拌270分钟。在这些最佳操作参数下,40% FeCl3浓度的制备可以消耗202瓦/升的高质量,且资本和操作成本低。经济指标表明,采用建议的清洁电化学生产技术生产40%氯化铁溶液的运行成本为241.66美元/吨,建议价格为450美元/吨,采用建议的绿色技术,净利润为156美元,现金流高。拟议的三氯化碳生产方法审查了使用清洁生产和可持续发展指标的重要性。
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引用次数: 6
Structural and some physical properties of Sodium Boro-phosphate Glass Containing Mill Scale. 含磨垢硼磷酸钠玻璃的结构及一些物理性能。
Pub Date : 2021-06-06 DOI: 10.21608/EJCHEM.2021.68425.3494
A. Sayed
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引用次数: 0
期刊
The Egyptian Journal of Chemistry
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