Asian Journal of Research in Chemistry最新文献_第8页

Chemical composition and QSAR descriptor of the dichloromethane extract of Moringa olifera (L.) flowers 辣木花二氯甲烷提取物的化学成分及QSAR描述符

Asian Journal of Research in Chemistry Pub Date : 2022-11-14 DOI: 10.52711/0974-4150.2022.00072

M. Allaoui, O. Rahim, D. Hamada, Manel Zaoui-Djelloul Daouadji, B. Labed

{"title":"Chemical composition and QSAR descriptor of the dichloromethane extract of Moringa olifera (L.) flowers","authors":"M. Allaoui, O. Rahim, D. Hamada, Manel Zaoui-Djelloul Daouadji, B. Labed","doi":"10.52711/0974-4150.2022.00072","DOIUrl":"https://doi.org/10.52711/0974-4150.2022.00072","url":null,"abstract":"The Moringa oleifera (Moringaceae) is one of these important plants, distributed in many tropical and sub-tropical countries, known with its medical uses of high nutritional value it is called the \"tree of life\". The Composition profile of the dichloromethane extract of the flowers of Moringa oleifera growing in Algerian desert was studied by capillary gas chromatography-mass spectrometry (GC-MS). thirty four Compounds were identified; Within the limits of the applied experimental conditions and by interpreting the mass spectra obtained and comparing it with the mass spectra of the reference materials, we record the possibility of the presence of the following chemical compounds: Hydrocarbons, Organic acids, Esters, Aldehydes Aromatic compounds and Nitrocyclic compounds, which major compounds are : (Z) - (9,17Octadecadienal (100%), Octadecanoic acid (60.4%), Heneicosane (10.186%), (Z)-9 Octadecenoic acid (12.711%), Heptadecanoic acid (13.742%), Hexadecane, 2,6,10,14-tetramethyl (18.988%), Heptadecane (14.866%) and Eicosane (17.535%). Analysis of QSAR descriptor from the results revealed that major constituents of the dichloromethane extract of Moringa olifera (L.) flowers.","PeriodicalId":8550,"journal":{"name":"Asian Journal of Research in Chemistry","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81182908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Review of Analytical Methods for the Estimation of Ivabradine and Metoprolol in Pharmaceutical Formulations and Biological Matrices 制剂和生物基质中伊伐布雷定、美托洛尔含量测定方法综述

Asian Journal of Research in Chemistry Pub Date : 2022-11-14 DOI: 10.52711/0974-4150.2022.00086

M. M. Eswarudu, B. Kumar, P. Babu

引用次数: 0

A Simple Group-Interaction Contribution Method for the Prediction of the Freezing Point of Ionic Liquids 预测离子液体凝固点的一种简单的基团相互作用贡献法

Asian Journal of Research in Chemistry Pub Date : 2022-11-14 DOI: 10.52711/0974-4150.2022.00071

Khadra Mokadem, Belfar Mohemed Lakhdar, K. Tumba, Abdulqader Saad Abed, M. Korichi

引用次数: 0

Comparative Thermal and Thermodynamic Study of Homologous series by Chromatography using Liquid Crystalline Stationary Phase 液晶固定相色谱法对同源系的热、热力学比较研究

Asian Journal of Research in Chemistry Pub Date : 2022-11-14 DOI: 10.52711/0974-4150.2022.00082

Bouchareb Hadj, B. Mokhtar, Djedid Mebrouk, Tafer Asma, Mounir Habati, Al-Dujaili A. H.

{"title":"Comparative Thermal and Thermodynamic Study of Homologous series by Chromatography using Liquid Crystalline Stationary Phase","authors":"Bouchareb Hadj, B. Mokhtar, Djedid Mebrouk, Tafer Asma, Mounir Habati, Al-Dujaili A. H.","doi":"10.52711/0974-4150.2022.00082","DOIUrl":"https://doi.org/10.52711/0974-4150.2022.00082","url":null,"abstract":"This work consisted in the preparation and the study of a new stationary phase based on liquid crystals for gas chromatography applications. Most of the synthesized compounds that have the character of liquid crystals in their constitution include aromatic molecules. In addition, there is little work that replaces this type of molecules with heterogeneous molecules that have a liquid crystalline character. This study constitutes an approach for the synthesis of a new molecule azoesters involves a 1,3,4-oxadiazole unit instead of aromatic rings, and which exhibits liquid crystalline characters. A liquid crystal has been prepared and characterized. The thermodynamic characteristics of the n-alkanes for the filled column were studied by reverse gas chromatography. The intermediate products, as well as the mesogens obtained, were characterized by various experimental analysis techniques such as infrared spectrometry (IR) and nuclear magnetic resonance (NMR). The thermal properties of synthesized liquid crystal require the use of DSC technique. Thermodynamic parameters such as enthalpies, partial solution molar entropy and infinite dilution, were determined for the liquid crystal-solvent system. The thermodynamic quantities show that these values depend on the number of carbon atoms of the CL phase terminal substituent. The transition temperatures obtained by gas chromatography are in good agreement with those found by DSC.","PeriodicalId":8550,"journal":{"name":"Asian Journal of Research in Chemistry","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83307561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Review on the role of Capsaicin in Neuropathic Pain 辣椒素在神经性疼痛中的研究进展

Asian Journal of Research in Chemistry Pub Date : 2022-11-14 DOI: 10.52711/0974-4150.2022.00084

A. Chaudhary, D. Arora, P. Devi

引用次数: 0

The effect of single and hybrid nanofluids in the performance of Solar Water Heating System 单一和混合纳米流体对太阳能热水系统性能的影响

Asian Journal of Research in Chemistry Pub Date : 2022-11-14 DOI: 10.52711/0974-4150.2022.00083

Y. Marif, Afak Benazzouz, B. Hebbal

引用次数: 0

Modeling of Log Kow of a Series of PAHs using Computational Chemistry 多环芳烃测井曲线的计算化学建模

Asian Journal of Research in Chemistry Pub Date : 2022-11-14 DOI: 10.52711/0974-4150.2022.00078

Fatiha Mebarki, Souhaila Meneceur, Abderrhmane Bouafia

{"title":"Modeling of Log Kow of a Series of PAHs using Computational Chemistry","authors":"Fatiha Mebarki, Souhaila Meneceur, Abderrhmane Bouafia","doi":"10.52711/0974-4150.2022.00078","DOIUrl":"https://doi.org/10.52711/0974-4150.2022.00078","url":null,"abstract":"The importance of Chemometrics Methods in Modeling (in QSAR analysis) of the mathematical model’s study of large datasets of molecules with huge numbers of physicochemical and structural parameters quantitative structure-Toxicity relationship (QSTR) are mainly based on multiple regression analysis in QSAR analysis The study of Least Square in deriving QSTR models for datasets of Quantitative Structure-Toxicity relationship on Log kow (Octanol-water partition coefficient) for 16 Hydrocarbons compounds has been using the software Hyperchem 6.3 for computing descriptors and MINITAB 16 for data modeling. A three -descriptors model [two electronics molecules’ descriptors (QSER descriptor), HOMO (is Highest occupied molecular orbital) and LUMO (Lowest unoccupied molecular orbital), one QSAR descriptor E_H (Hydration Energy) by Least Squares with correlation coefficient r=0.868, S=0.635, R2 = 75.4%, R2ajd=73.7% and Durbin-Watson statistic =1.85277 and graphical analysis by diagram of goodness of fit and line plot. The results statistical of new model after removing the aberrant compounds (Toxicity compounds) shows high Coefficient of correlation r=0.9581, S=0.4316, determination coefficient R2 =91. 8%, ajustemed R2ajd = 89.3%, Durbin-Watson statistic D=2.373, Three explanatory Variable model selected is robust and has good fitness. Two influential compounds detected and important the model and absence aberant compounds of the studied sample.","PeriodicalId":8550,"journal":{"name":"Asian Journal of Research in Chemistry","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72870543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The impact of pH value in the Phenolic content and Antioxidant potential of Medicinal plant extract pH值对药用植物提取物酚类物质含量及抗氧化能力的影响

Asian Journal of Research in Chemistry Pub Date : 2022-10-01 DOI: 10.52711/0974-4150.2022.00059

Berra Djamila, Dia Ouahida, Laouini Salah Eddine, Menaceur Souheila

引用次数: 1

Structural and Binding energy of Aun+1 and PtAun (n =1-9) Clusters Aun+1和PtAun (n =1-9)簇的结构和结合能

Asian Journal of Research in Chemistry Pub Date : 2022-10-01 DOI: 10.52711/0974-4150.2022.00061

Y. Benkrima, A. Souigat, Y. Chaouche, M. E. Soudani, Mohammed Seyf Eddine Bougoffa, N. Mahdadi

引用次数: 0

Fusidic Acid: A Therapeutic Review 夫西地酸:治疗回顾

Asian Journal of Research in Chemistry Pub Date : 2022-10-01 DOI: 10.52711/0974-4150.2022.00066

Anshul Sharma, Keshav Dhiman, Kamya Goyal, V. Pandit, M. Ashawat, Shammy Jindal

引用次数: 0