Research Journal of Chemistry and Environment最新文献_第2页

Electrochemical synthesis of cadmium chelates at sacrificial anode 在牺牲阳极上电化学合成镉螯合物

Research Journal of Chemistry and Environment Pub Date : 2024-01-31 DOI: 10.25303/283rjce019024

Kanchan Bala, Baljit Singh

引用次数: 0

Role of rhizosphere microorganisms in remediation of crude oil contaminated soil- A Review 根瘤微生物在原油污染土壤修复中的作用--综述

Research Journal of Chemistry and Environment Pub Date : 2024-01-31 DOI: 10.25303/283rjce078089

N. Borah, A. Gogoi, R. Nath, L.R. Saikia

{"title":"Role of rhizosphere microorganisms in remediation of crude oil contaminated soil- A Review","authors":"N. Borah, A. Gogoi, R. Nath, L.R. Saikia","doi":"10.25303/283rjce078089","DOIUrl":"https://doi.org/10.25303/283rjce078089","url":null,"abstract":"Crude oil contamination of soil is becoming a major problem across the globe. Soil contaminated with crude oil leads to deleterious effects on soil microorganisms and plant and human health. For the purpose of remediation of oil contaminated soil, bioremediation has emerged as the most effective technique. The process by which soil pollutants are broken down by an association of plant roots and rhizosphere-dwelling microbes is called rhizoremediation. Plant roots secrete a variety of organic compounds which offer a nutrient and carbon-rich environment surrounding them enhancing the activity of rhizosphere microorganisms. The degradation of petroleum contaminants is caused primarily by the catalysis of intracellular enzymes. Depending on the components present in crude oil, the degradation mechanism is different. Different kinds of microorganisms produce different kinds of enzymes encoded by specific genes which take part in the degradation mechanisms. Being environment-friendly and cost-effective, rhizoremediation has certain limitations - it is a sluggish process and requires more time. To overcome it, there are a variety of amendments like biostimulation and bioaugmentation which increase the efficiency of the process.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140471596","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

Characterization of Chitosan Films Cast from Different Solvents: FTIR, Surface and Mechanical Investigations 不同溶剂浇铸的壳聚糖薄膜的表征：傅立叶变换红外光谱、表面和机械研究

Research Journal of Chemistry and Environment Pub Date : 2024-01-31 DOI: 10.25303/283rjce025031

E. Elhefian, E. Elgannoudi, Azizah Mainal, Abdul Hamid Yahaya

引用次数: 0

Study of Staphylococcus aureus genotyping using Coagulase gene method 使用凝固酶基因法对金黄色葡萄球菌进行基因分型的研究

Research Journal of Chemistry and Environment Pub Date : 2024-01-31 DOI: 10.25303/283rjce040047

Sadah Al-Halfi Alaa S., Al-Shammari Maher Zaki Faisal, Khalil Ibrahim Suaad

引用次数: 0

Diluted Sulphuric Acid Hydrolysis of Destarched Sago Fibre assisted with Selected Pre-treatments for Glucose and Xylose Production 稀硫酸水解毁坏的西米纤维并辅以选定的预处理以生产葡萄糖和木糖

Research Journal of Chemistry and Environment Pub Date : 2023-12-05 DOI: 10.25303/281rjce13020

Isfaniza Barji, Dayang Salwani Awang Adeni

{"title":"Diluted Sulphuric Acid Hydrolysis of Destarched Sago Fibre assisted with Selected Pre-treatments for Glucose and Xylose Production","authors":"Isfaniza Barji, Dayang Salwani Awang Adeni","doi":"10.25303/281rjce13020","DOIUrl":"https://doi.org/10.25303/281rjce13020","url":null,"abstract":"In Sarawak, Malaysia, approximately 7 t of sago fibre waste is produced daily from a single sago starch processing mill and it is currently disposed of either directly into a river nearby or in open spaces. On a dry basis, sago fibre contains 58% starch, 23% cellulose, 9.2% hemicellulose and 4% lignin. Our previous study used the trapped starch of sago fibre as a substrate for producing glucose through an enzymatic hydrolysis process in which the destarched fibre (DSF) remained unused. This study represents an attempt to utilise destarched sago fibre (DSF) as a raw material for glucose and xylose production. The DSF initially underwent a pre-treatment process via dilute sulphuric acid hydrolysis to liberate xylose for which four parameters were studied: the solid-to-liquid ratio (5:100-40:100), the dilute sulphuric acid concentration (0% (v/v) - 9% (v/v)), reaction time (30, 60 and 90 minutes) and the effects of steaming and microwave pre-treatment. Steaming pre-treatment led to the highest xylose (28.19 ± 0.78 g/L) and glucose (78.63 g/L ± 0.22 g/L) production, for which the dilute sulphuric acid concentration was set at 2% (v/v), reaction time was set at 60 minutes. The solid-to-liquid ratio was 30:100. Overall, this work indicates that the optimal pre-treatment of DSF can yield glucose and xylose which can be used to produce bioethanol and xylitol. The study also suggests that DSF can be an alternative raw material for xylitol production.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138984815","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

Treatment of Atrazine through Ozonation: Effect of Contact Time on COD and Atrazine Removal 通过臭氧处理阿特拉津：接触时间对化学需氧量和阿特拉津去除率的影响

Research Journal of Chemistry and Environment Pub Date : 2023-12-05 DOI: 10.25303/281rjce85090

S. Khurshid, A. R. Quaff, Ramakar Jha

引用次数: 0

Leaf extract of Cimbopogan citratus supported CuO/ZnO nanocomposite and their applications in photocatalytic and antibacterial activities Cimbopogan citratus 的叶提取物所支持的 CuO/ZnO 纳米复合材料及其在光催化和抗菌活性中的应用

Research Journal of Chemistry and Environment Pub Date : 2023-12-05 DOI: 10.25303/281rjce27037

A. Igneshgrace, E. Sindhuja

{"title":"Leaf extract of Cimbopogan citratus supported CuO/ZnO nanocomposite and their applications in photocatalytic and antibacterial activities","authors":"A. Igneshgrace, E. Sindhuja","doi":"10.25303/281rjce27037","DOIUrl":"https://doi.org/10.25303/281rjce27037","url":null,"abstract":"We have focused on the green synthesis of copper oxide nanoparticles (CuONPs) and zinc oxide nanoparticles (ZnONPs) and CuO coated with ZnO nanocomposite (CuO/ZnO) by using leaf extract of Cimpobogan citrates (CC) as reducing and stabilizing agent. Copper sulfate pentahydrate (CuSO4.5H2O) and zinc acetate dihydrate (Zn(CH3COO)2.2H2O) are the forerunners in the hydrothermal synthesis. The prepared ZnONPs, CuONPs and CuO/ZnO nanocomposite were characterized using various instrument techniques such as Fourier Transform-Infrared spectroscopy (FT-IR), UV-visible spectroscopy (UV-Vis), X-ray diffraction pattern (XRD), Scanning electron microscope (SEM), Energy dispersive X-ray analysis (EDAX) and High Resolution-Transmission Electron microscope (HR-TEM). The results showed that the average size of CuO/ZnO nanocomposite was 20-50 nm. The Tauc plot of CuO/ZnO nanocomposite shows low band gap (1.56ev). Under visible light illumination, methylene blue (MB) was degraded photocatalytically using ZnONPs, CuONPs and CuO/ZnO nanocomposite which was then examined using UV-visible spectroscopy. In comparison to ZnONPs (65%) and CuONPs (80%), CuO/ZnO nanocomposite showed superior photocatalytic activity for the breakdown of MB with a high percentage degradation efficiency (85%). The photocatalytic degradation rate constant was evaluated by using a pseudo-first order kinetic equation. Additionally, the agar disc diffusion method was used to examine the antibacterial activity against two bacterial strains (Escherichia coli and Staphylococcus aureus) and a sizable zone of inhibition against the bacterial strains was found.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138984852","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 brief overview of X-ray photoelectron spectroscopy characterization of thin films 薄膜的 X 射线光电子能谱表征概述

Research Journal of Chemistry and Environment Pub Date : 2023-12-05 DOI: 10.25303/281rjce1420160

Soonmin Ho, A.G. Jacob

引用次数: 0

Design and in silico evaluation of oxadiazole linked chromone derivatives as anti-depressant agents 设计并在硅学中评估作为抗抑郁剂的噁二唑链铬酮衍生物

Research Journal of Chemistry and Environment Pub Date : 2023-12-05 DOI: 10.25303/281rjce73079

D. Gupta, Vidya Murugeshwari, Pankaj Kumar, Abhishek Kumar

{"title":"Design and in silico evaluation of oxadiazole linked chromone derivatives as anti-depressant agents","authors":"D. Gupta, Vidya Murugeshwari, Pankaj Kumar, Abhishek Kumar","doi":"10.25303/281rjce73079","DOIUrl":"https://doi.org/10.25303/281rjce73079","url":null,"abstract":"Depression is a common CNS disorder due to disturbances in the serotonin and dopamine level within the brain. In this study, different derivatives (C1-C32) of oxadiazole-linked chromone were designed and in silico studies were performed to investigate its anti-depressant activities. Compounds were docked with 5HT1 receptors to do so and MMGBSA and ADMET properties were evaluated. Further, compounds pharmacophore modeling and antidepressant activity were calculated using the phase and PASS tools. Among 32 designed compounds, C15, C29 and C31 showed the highest docking scores of -7.617, -7.269 and -7.325 kcal/mol and exhibited significant interaction with 5HT1 receptors compared to the standard drug imipramine. Compound C15 showed the highest binding efficiency with a binding energy of -77.79; the expected common is having a binding energy of -47.20. ADME properties show that all the designed compounds followed the rule of five. Further ligand-receptor complex potential interactions were evaluated using pharmacophore modeling, indicating that the compound has steric and electronic features to ensure the interaction with the selected receptor. Further, the antidepressant activity was predicted. Compounds C15 and C21 have the highest possibility of being antidepressant molecules with 0.827 and 0.833 pa values.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138985294","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

Chemical components as a potential resource for synthesis of organic compounds and anti-inflammatory activity of essential bark oil of Illicium verum 作为合成有机化合物潜在资源的化学成分以及茵陈树皮精油的抗炎活性

Research Journal of Chemistry and Environment Pub Date : 2023-12-05 DOI: 10.25303/281rjce68072

Dinh Thuy Van, P. T. Chính, Pham Thi Tham, Mai Thanh Nga, Thongsaving Ounkuea

引用次数: 0