Journal of Chemistry and Environment最新文献_第3页

Fractionation and Characterization of the Bioactive Compounds of the Extracts of Buds of Syzygium aromaticum 香薷芽提取物活性成分的分离与表征

Journal of Chemistry and Environment Pub Date : 2022-11-14 DOI: 10.56946/jce.v1i01.28

Agu Chukwuemeka Leonard

{"title":"Fractionation and Characterization of the Bioactive Compounds of the Extracts of Buds of Syzygium aromaticum","authors":"Agu Chukwuemeka Leonard","doi":"10.56946/jce.v1i01.28","DOIUrl":"https://doi.org/10.56946/jce.v1i01.28","url":null,"abstract":"This research focused on the separation and identification of bioactive components of the methanolic extracts of the buds of Syzygium aromaticum. A bioassay and phytochemical screening were performed on the various solvent fractions, and the most active fraction was subjected to spectroscopic analysis using infrared, mass spectroscopy, and nuclear magnetic resonance to determine the structure of the active compounds present. The methodology involved extracting the flower buds of Syzygium aromaticum using methanol, fractionating the plant extract using three solvents—n-hexane, ethylacetate, and methanol, and performing a bio Using the agar well diffusion method, the antibacterial properties of the three solvent fractions were ascertained. The analysis' findings revealed that each of the three solvent fractions had tannins, alkaloids, flavonoids, and reducing sugars; the only fraction to contain saponins was the ethylacetate fraction, and the only fraction to have glycosides. The results of the study further showed that the ethylacetate fraction had the strongest antimicrobial activity against the test organisms, inhibiting the growth of bacteria such as Escherichia coli, Salmonella typhi, Staphylococcus aureus, Bacillus subtilis, and Candida albicans at concentrations of 200 mg/mL. The structural elucidation of the active compounds responsible for the antimicrobial was done through spectroscopic analysis using infrared, nuclear magnetic resonance and mass spectroscopy. The antimicrobial activities of this plant highlighted the significance of the extracts in traditional drug preparations, according to the study's findings, which suggested that the antimicrobial properties of the flower buds of Syzygium aromaticum may be due to the synergetic or individual effects of the phytoconstituents found.","PeriodicalId":29792,"journal":{"name":"Journal of Chemistry and Environment","volume":"91 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86408786","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

Comprehensive Review on Synthesis of Abox Material and its Catalytic Applications Abox材料的合成及其催化应用综述

Journal of Chemistry and Environment Pub Date : 2022-10-17 DOI: 10.56946/jce.v1i01.49

Syeda Mehak Batool, Khushbo e Kainat, Suqqyana Fazal, F. Ahmad

引用次数: 0

Synthesis, characterization and antibacterial activity of ethylene di-amine and 2-hydroxybenzadehyde Schiff base and its metal complexes 乙烯二胺- 2-羟基苯甲醛希夫碱及其金属配合物的合成、表征及抑菌活性

Journal of Chemistry and Environment Pub Date : 2022-09-23 DOI: 10.56946/jce.v1i01.34

Muhammad Junaid, Jianhua Yan, Zhong‐Hua Qi, Muhammad Haroon

{"title":"Synthesis, characterization and antibacterial activity of ethylene di-amine and 2-hydroxybenzadehyde Schiff base and its metal complexes","authors":"Muhammad Junaid, Jianhua Yan, Zhong‐Hua Qi, Muhammad Haroon","doi":"10.56946/jce.v1i01.34","DOIUrl":"https://doi.org/10.56946/jce.v1i01.34","url":null,"abstract":"A number of modern techniques have been developed for the synthesis of Schiff bases. We reported the synthesis of ethylene di-amine and 2-hydroxybenzadehyde Schiff base (SB) via the condensation method. To remove phenolic hydrogen to form Schiff base it was reacted with sodium hydroxide and then treated with M(II) chloride (M=Fe, Cu, Zn, Ni and Sn) to fabricate their respective metal complexes. The synthesis of SB metal complexes and detailed functional group characterization were validated via Fourier transform infrared (FT-IR) spectroscopy. In the final SB, FT-IR results revealed a vibrational peak at 1614 cm-1, which was credited to the –C=N part. The absence of a vibration band for –OH vibration on 1613 cm-1 and the presence of a novel band in the 659 to 586 cm-1 range were due to the metal-oxygen bond, confirming the synthesis of metal complexes. The Schiff base showed high antibacterial activity against E. coli, Pseudomonas aeruginosa, Salmonella typhi, S.aureus and Bacillus whereas Streptococcus was found resistant. Cu, Fe and Sn coordination improved Schiff base activity while Ni coordination did not affect the activity. Similarly, Fe and Sn complex had no effect on E. coli. In comparison with standard Ciprofloxacin, the activities of respective metal complexes were low.","PeriodicalId":29792,"journal":{"name":"Journal of Chemistry and Environment","volume":"2013 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90405362","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: 1

Determination of Antioxidant Activity of Acacia Nilotica Linn from different Regions of Baluchistan (Pakistan) 巴基斯坦俾路支省不同地区尼罗刺槐抗氧化活性测定

Journal of Chemistry and Environment Pub Date : 2022-09-14 DOI: 10.56946/jce.v1i01.40

Muhammad Haroon, Zainab Ali Ahmad, Naeem Ullah, Fazal Haq, Muhammad Junaid, Amir Zeb, Mehwish Kiran, Sahid Mehmood, Farzana Kamalan, Aisha Hamid

{"title":"Determination of Antioxidant Activity of Acacia Nilotica Linn from different Regions of Baluchistan (Pakistan)","authors":"Muhammad Haroon, Zainab Ali Ahmad, Naeem Ullah, Fazal Haq, Muhammad Junaid, Amir Zeb, Mehwish Kiran, Sahid Mehmood, Farzana Kamalan, Aisha Hamid","doi":"10.56946/jce.v1i01.40","DOIUrl":"https://doi.org/10.56946/jce.v1i01.40","url":null,"abstract":"Free radicals are naturally occurring species with unpaired electrons that are formed during normal metabolic processes. Their formation in a high amount may cause oxidation of essential structural molecules of cell, the condition is known as oxidative stress which results in several health issues such as cancer, diabetes, heart diseases, inflammatory diseases, arthritis and a lot more. To overcome these effects, antioxidants, both synthetic and natural ones are consumed by people. Due to recent evidences about the long term harmful effects of synthetic antioxidants the interest towards the natural sources has increased. The aim of the current research is to comparatively analyze the antioxidant activity of acacia Nilotica Linn samples collected from different regions of Makran by using 2, 2-diphenyl-1-picrylhydrazyl(DPPH) assay on which no work has been done so far. The DPPH assay of the samples gave the following results with antioxidant activity values as 18.51851%, 4.47761%, and 8.25958% for the samples of acacia Nilotica Linn from Shahrak, acacia from Turbat, acacia from Pedrak. The results revealed that acacia Nilotica Linn from Shahrak exhibits maximum free radical scavenging activity. More work on chemical composition of the tested samples has to be done.","PeriodicalId":29792,"journal":{"name":"Journal of Chemistry and Environment","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88735526","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