European Journal of Chemistry最新文献

Investigation of the antioxidant properties of Persea americana seed flour altered by the fermentation process with Lactobacillus plantarum 通过植物乳杆菌发酵过程改变珍珠籽粉抗氧化特性的研究

European Journal of Chemistry Pub Date : 2024-03-31 DOI: 10.5155/eurjchem.15.1.74-78.2508

Polegodage Dilushi Sureka Ruwan Kumari, R. Amarakoon, Madushan Dhammika Gunarathna

{"title":"Investigation of the antioxidant properties of Persea americana seed flour altered by the fermentation process with Lactobacillus plantarum","authors":"Polegodage Dilushi Sureka Ruwan Kumari, R. Amarakoon, Madushan Dhammika Gunarathna","doi":"10.5155/eurjchem.15.1.74-78.2508","DOIUrl":"https://doi.org/10.5155/eurjchem.15.1.74-78.2508","url":null,"abstract":"This study aims to investigate the effect of Lactobacillus plantarum fermentation on the antioxidant potential of Persea americana seed flour. The half-maximal inhibitory concentration (IC50) value of avocado seed flour after fermentation for 24, 48, and 72 h was compared with the unfermented avocado seed flour using the measurement of free radical scavenging activity of 2,2-diphenyl-1-picrylhydrazyl (DPPH). Additionally, the change in pH value was measured to confirm the continuous fermentation process within the desired period. The results for the DPPH assay for unfermented, 24, 48, and 72 h fermented avocado seed flour were 61.5±0.71, 51.18±0.10, 46.00±0.21, 43.73±0.21 µg/mL, respectively, which indicated a significant increase (p < 0.05) of IC50 values of avocado seed flour with the fermentation. Furthermore, with the fermentation period, there was a significant decrease in the pH value for the 72-hour fermented sample (4.15±0.03) compared to the unfermented sample (6.81±0.04). These results supported avocado seed as an important by-product source for the further development of health-promoting products, by confirming the increased antioxidant capacity of avocado seed flour after fermentation.","PeriodicalId":11778,"journal":{"name":"European Journal of Chemistry","volume":"32 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140359692","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

Facile Heck coupling synthesis and characterization of a novel tris(4-(pyridine-4-vinyl)phenyl)methylsilane tridentate core 新型三(4-(吡啶-4-乙烯基)苯基)甲基硅烷三叉核的简便赫克偶联合成与表征

European Journal of Chemistry Pub Date : 2024-03-31 DOI: 10.5155/eurjchem.15.1.71-73.2505

O. S. Bull, Chioma Don-Lawson

引用次数: 0

Effect of air pollution on plant life in the city of Chittagong, Bangladesh 空气污染对孟加拉国吉大港市植物生命的影响

European Journal of Chemistry Pub Date : 2024-03-31 DOI: 10.5155/eurjchem.15.1.79-86.2511

A.N.M. Jubaer, Mohammed Khorshed Ali, Saiyed Mahmud Tanvir Hassan, Md.Shahidul Islam, Muhammad Mahabub Alam, Sajia Islam, Mohammad Zahirul Islam Talukder, Rubayat Tahrim Sourav

{"title":"Effect of air pollution on plant life in the city of Chittagong, Bangladesh","authors":"A.N.M. Jubaer, Mohammed Khorshed Ali, Saiyed Mahmud Tanvir Hassan, Md.Shahidul Islam, Muhammad Mahabub Alam, Sajia Islam, Mohammad Zahirul Islam Talukder, Rubayat Tahrim Sourav","doi":"10.5155/eurjchem.15.1.79-86.2511","DOIUrl":"https://doi.org/10.5155/eurjchem.15.1.79-86.2511","url":null,"abstract":"Bangladesh faces a serious problem with air pollution, which has a negative impact on human health and tree health. Leaf damage, slow development, and decreased photosynthetic activity are just a few of the harmful effects on trees that have been linked to high concentrations of pollutants such as particulate matter, sulfur dioxide, and nitrogen oxides. These consequences affect the aesthetic value of green spaces in addition to interfering with the functions of the ecosystem that trees offer, such as air filtration and carbon sequestration. Given the seriousness of the problem, the present study plan was implemented to evaluate the amount of pollutants such as SOx, NOx, O3, hydrocarbons, particulate matter 2.5, particulate matter 10 and suspended particulate matter in the air in several urban areas of Chittagong and to evaluate the amount of chlorophyll from the leaves of affected and without affected leaves so that it may understand how the photosynthesis process of plants is interrupted by air pollution. 2 Number Gate Circle, Akbarsha Lane Circle, Alongkar Mor Bus Stop, Barik Building Circle, BDR Field Circle, Halishahar Access Road, Artillery Center-North Halishahar, Bangladesh Forest Research Institute and CRB Circle were selected as sampling location based on their heavy traffic and crowdedness. For the analysis of chlorophyll, each plant leaves were collected in three sections such as unaffected, slightly affected, and affected for comparison. The data studied showed that the most polluted zone with particulate matter had a lower chlorophyll concentration in the surrounding tree leaves. This can indicate that particulate matter can hinder photosynthesis reactions.","PeriodicalId":11778,"journal":{"name":"European Journal of Chemistry","volume":"22 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140359700","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

Synthesis and structural depiction of the isomeric benzimidazole pair and its in-silico anti-SARS-CoV-2 activities 苯并咪唑对异构体的合成、结构描述及其体内抗 SARS-CoV-2 活性

European Journal of Chemistry Pub Date : 2024-03-31 DOI: 10.5155/eurjchem.15.1.39-49.2483

Ananya Debnath, Shreya Mahato, A. De, H. Verma, O. Silakari, Bhaskar Biswas

{"title":"Synthesis and structural depiction of the isomeric benzimidazole pair and its in-silico anti-SARS-CoV-2 activities","authors":"Ananya Debnath, Shreya Mahato, A. De, H. Verma, O. Silakari, Bhaskar Biswas","doi":"10.5155/eurjchem.15.1.39-49.2483","DOIUrl":"https://doi.org/10.5155/eurjchem.15.1.39-49.2483","url":null,"abstract":"The present work presents a straightforward synthesis, spectroscopic and structural depiction, and in silico anti-SARS-CoV-2 activity of an isomeric monosubstituted benzimidazole pair, 2-(1H-benzo[d]imidazol-2-yl)-6-methoxyphenol (L1O) and 4-(1H-benzo[d]imidazol-2-yl)-2-methoxyphenol (L1P). The derivatives were synthesized by a coupling of aromatic aldehydes and o-phenylenediamine in ethanol under reflux. Different spectroscopic methods and X-ray structural analysis were employed to characterize the compounds. The crystal structure of L1O reveals that the o-vanillin substituted benzimidazole compound crystallizes in a monoclinic system and adopts a planar geometry. In silico anti-SARS-CoV-2 proficiencies of synthetic derivatives were evaluated against the main protease (Mpro) and nonstructural proteins (nsp2 and nsp7) of SARS-CoV-2. Molecular docking reveals the binding scores for the L1O-Mpro, L1O-nsp2 and L1O-nsp7 complexes as -11.31, -6.06 and -8.13 kcal/mol, respectively, while the binding scores for the L1P-Mpro, L1P-nsp2 and L1P-nsp7 complexes as -10.62, -5.09 and -6.91 kcal/mol, respectively, attributing the excellent conformational stability for both the isomeric benzimidazole derivatives.","PeriodicalId":11778,"journal":{"name":"European Journal of Chemistry","volume":"102 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140360198","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

4-Carboxyanilinium dihydrogen phosphate monohydrate, an organophosphate adducts of 4-amino benzoic acid: Structural, vibrational, thermal, and computational studies 4-氨基苯甲酸的有机磷加合物--4-羧基苯胺磷酸二氢酯一水合物：结构、振动、热和计算研究

European Journal of Chemistry Pub Date : 2024-03-31 DOI: 10.5155/eurjchem.15.1.1-16.2484

Lata Panicker

{"title":"4-Carboxyanilinium dihydrogen phosphate monohydrate, an organophosphate adducts of 4-amino benzoic acid: Structural, vibrational, thermal, and computational studies","authors":"Lata Panicker","doi":"10.5155/eurjchem.15.1.1-16.2484","DOIUrl":"https://doi.org/10.5155/eurjchem.15.1.1-16.2484","url":null,"abstract":"4-Carboxyanilinium dihydrogen phosphate monohydrate (4-CAH2PO4·H2O), an organophosphate adduct, was synthesized and characterized by single-crystal X-ray diffraction, Fourier transform infrared (FTIR), Differential scanning calorimetry (DSC) and computational analysis performed using CrystalExplorer 21, Gaussian 09W and Multiwfn 3.7 software. The complex 4-CAH2PO4·H2O crystallized in the triclinic space group, P-1, with two molecules each of 4-carboxyanilinium (4-CA) cations, H2PO4– anions, and water, respectively, in an asymmetric unit. Crystal data for C7H12NO7P: triclinic, space group P-1, a = 8.5238(2) Å, b = 8.9068(2) Å, c = 14.4976(4) Å, α = 106.456(2)°, β = 90.195(2)°, γ = 92.811(2)°, V = 1054.13(5) Å3, Z = 4, T = 293 K, μ(Cu Kα) = 2.587 mm-1, Dcalc = 1.595 g/cm3, 18182 reflections measured (6.358° ≤ 2Θ ≤ 146.396°), 4149 unique (Rint = 0.1018, Rsigma = 0.0521) which were used in all calculations. The final R1 was 0.0584 (I > 2σ(I)) and wR2 was 0.1712 (all data). The organic layer containing 4-CA cations and the inorganic layer containing phosphate anions and water molecules in 4-CAH2PO4·H2O crystals are connected through a three-dimensional network of strong charge-assisted N–H···O and C-OH···O hydrogen bonds. The fingerprint plot of 4-CAH2PO4·H2O obtained indicated that the most prominent interaction corresponds to the short O···H contact, followed by the H···H and H···C contacts. The intermolecular interaction topology of 4-CAH2PO4·H2O has been quantitatively analyzed. The 4-CAH2PO4·H2O complex was optimized by density functional theory (DFT) with B3LYP/6-31G basis set and the theoretical IR vibrational spectra determined. The noncovalent interaction (NCI) and quantum theory of the atom in the molecule (QTAIM) analysis were done using Multiwfn 3.7 software. 4-CAH2PO4·H2O complex structure and its computational analysis are also compared with that of 4-carboxyanilinium dihydrogen phosphate (4-CAH2PO4).","PeriodicalId":11778,"journal":{"name":"European Journal of Chemistry","volume":"10 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140358779","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

Design, synthesis, spectral analysis, and biological evaluation of Schiff bases with a 1,3,4-thiadiazole moiety as an effective inhibitor against bacterial and fungal strains 设计、合成、光谱分析和生物学评价可有效抑制细菌和真菌菌株的 1,3,4-噻二唑分子席夫碱

European Journal of Chemistry Pub Date : 2023-12-31 DOI: 10.5155/eurjchem.14.4.466-472.2468

Sajid Ajit Malak, J. Rajput, Mustakim Sharif

引用次数: 0

Synthesis of coumarin-3-carboxylic acids in waste curd water: A green approach 在凝乳废水中合成香豆素-3-羧酸：一种绿色方法

European Journal of Chemistry Pub Date : 2023-12-31 DOI: 10.5155/eurjchem.14.4.439-444.2471

N. B. Sonawane, J. Rajput, Dilip Ramsing Patil

引用次数: 0

In an attempt to add ligands to the sixth (axial) position of vanadyl bis-acetylacetonate: A unique tetranuclear vanadyl species 尝试在双乙酰丙酮酸香草酯的第六个（轴向）位置添加配体：一种独特的四核香草醛物种

European Journal of Chemistry Pub Date : 2023-12-31 DOI: 10.5155/eurjchem.14.4.494-498.2485

R. Lalancette, Ivan Bernal

{"title":"In an attempt to add ligands to the sixth (axial) position of vanadyl bis-acetylacetonate: A unique tetranuclear vanadyl species","authors":"R. Lalancette, Ivan Bernal","doi":"10.5155/eurjchem.14.4.494-498.2485","DOIUrl":"https://doi.org/10.5155/eurjchem.14.4.494-498.2485","url":null,"abstract":"We have explored the interaction of [(acac)2V=O] (acac = acetylacetone) with a series of potential ligands which were chosen because of their expected ability to attach themselves onto its sixth (axial) position. Furthermore, some of the species chosen were expected to have the capability of linking pairs of [(acac)2V=O] molecules, thus creating magnetically coupled substances whose behavior would be interesting to document by magnetic as well as structural methods. Some of the synthetic results were surprising in that unexpected products were obtained which we had not envisioned; specifically, herein we describe a tetranuclear vanadyl cluster (Crystal data for C38H51N4O17ClV4: orthorhombic, space group Pca21 (no. 29), a = 26.4698(3) Å, b = 13.5167(2) Å, c = 12.7659(2) Å, V = 4567.44(11) Å3, Z = 4, μ(CuKα) = 7.842 mm-1, Dcalc = 1.53 g/cm3, 41277 reflections measured (6.538° ≤ 2Θ ≤ 137.892°), 7841 unique (Rint = 0.0428, Rsigma = 0.0421) which were used in all calculations; the final R1 was 0.0675 (I > 2σ(I)) and wR2 was 0.1641 (all data)), which is unusual in several aspects of its composition as well as its stereochemistry.","PeriodicalId":11778,"journal":{"name":"European Journal of Chemistry","volume":"49 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139131139","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

Synthesis of calcium propionate from indigenous limestone from Swat area in Pakistan 利用巴基斯坦斯瓦特地区的本土石灰石合成丙酸钙

European Journal of Chemistry Pub Date : 2023-12-31 DOI: 10.5155/eurjchem.14.4.460-465.2456

Ansar Mahmood, S. Zahra, Rashid Mahmood, Asma Sheikh

引用次数: 0

Toxicological aspects of wastewater 废水的毒理学方面

European Journal of Chemistry Pub Date : 2023-12-31 DOI: 10.5155/eurjchem.14.4.451-459.2459

F. Ondrasik, Š. Kročová

{"title":"Toxicological aspects of wastewater","authors":"F. Ondrasik, Š. Kročová","doi":"10.5155/eurjchem.14.4.451-459.2459","DOIUrl":"https://doi.org/10.5155/eurjchem.14.4.451-459.2459","url":null,"abstract":"‘Alea iacta est', the die is cast, said the Roman general Gaius Julius Caesar the moment he and his troops crossed the Rubicon River. This phrase refers to a state where everything has already been decided and this decision cannot be taken back. It is at this borderline that humanity now finds itself; its survival is at stake. The basic biogenic components of the environment, such as water, air, and soil, are coming under the pressure of the modern industrial revolution. The products of this anthropogenic activity significantly affect the environment. We live in a time of rapid climate change, melting of glaciers, devastation of nature, mass extermination, or loss of animal and plant species in order to increase human living standards. Man has caused all this in one stage of human life, a generation. Humanity mismanages natural resources and clings to a lifestyle that is vain. It destroys the natural environment on which it is dependent simultaneously. An environmental disaster is coming. Will our blue planet still be livable for future generations? The study deals with one of the components of the environmental environment, not an insignificant one, that is, water. For the moment, recycled water is a neglected and underappreciated resource from the point of view of the Czech Republic and its state authorities. The cleaning process may be inadequate or unreliable, and residual biological and chemical contaminants may pose a risk to human health. This work focuses on the use of purified wastewater mainly for firefighting unit activities in relation to a possible health risk. The result of the study is a clear possible recommendation for the use of recycled wastewater from a technical, technological, and logistical point of view, but taking into account the precautionary principle.","PeriodicalId":11778,"journal":{"name":"European Journal of Chemistry","volume":"54 26","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139130677","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