Pub Date : 2022-11-05DOI: 10.34198/ejcs.9123.139156
A. Gaye, Ramatoulaye Diouf, A. Fall
The study was carried to evaluate the ability of defatted seed of Adansonia digitata (DFSE) to remove methylene blue dye from contaminated water. The optimum parameters such as contact time, particle size, absorbent dose, initial dye concentration, and pH were investigated by performing batch experiments models. The kinetics and the isotherms adsorption were evaluated by varying the initial concentration and using the optimum parameters. The optimum of contact time is 90 min and the removal capacity is 99.34 %. A mass of 700 mg is sufficient to reach the maximum removal of methylene blue (99.44 %). The maximum adsorption is obtained with an initial methylene blue concentration of 75 ppm (98.53 %). The optimum particle size is 100 mm. The kinetics of the adsorption process are in accordance with the pseudo-second order model. Experimental values of the adsorption capacity are close proximity to the optimum values predicted by the pseudo-second order model. The Langmuir, Freundlich, Dubinin-Radushkevich and Tempkin isotherms are not suitable to explain the experimental isotherm.
{"title":"Bio-sorption of Methylene Blue by Defatted Seed of Adansonia digitata","authors":"A. Gaye, Ramatoulaye Diouf, A. Fall","doi":"10.34198/ejcs.9123.139156","DOIUrl":"https://doi.org/10.34198/ejcs.9123.139156","url":null,"abstract":"The study was carried to evaluate the ability of defatted seed of Adansonia digitata (DFSE) to remove methylene blue dye from contaminated water. The optimum parameters such as contact time, particle size, absorbent dose, initial dye concentration, and pH were investigated by performing batch experiments models. The kinetics and the isotherms adsorption were evaluated by varying the initial concentration and using the optimum parameters. The optimum of contact time is 90 min and the removal capacity is 99.34 %. A mass of 700 mg is sufficient to reach the maximum removal of methylene blue (99.44 %). The maximum adsorption is obtained with an initial methylene blue concentration of 75 ppm (98.53 %). The optimum particle size is 100 mm. The kinetics of the adsorption process are in accordance with the pseudo-second order model. Experimental values of the adsorption capacity are close proximity to the optimum values predicted by the pseudo-second order model. The Langmuir, Freundlich, Dubinin-Radushkevich and Tempkin isotherms are not suitable to explain the experimental isotherm.","PeriodicalId":11449,"journal":{"name":"Earthline Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84315372","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}
Pub Date : 2022-11-05DOI: 10.34198/ejcs.9123.157162
F. Sánchez-Viesca, Reina Gómez
The tests for morphine are very important since this alkaloid is used in medicine for pain release but also it is a restricted drug due to abuse. The interaction of morphine with iodic acid has been used for its identification. In this communication the several redox reactions taking place during this test are explained in a new way. Activation of the organic-inorganic ester (mixed iodate) by protonation and water loosening creates a cationic intermediate with inverted polarity at the ortho-position. This innovation is important because there is no need to invoke electron back donation since this concept reverses the normal polarization of a functional group. Our novelty worked very well and explained the three successive redox steps taking place during the test, that is, until the oxidation to an ortho-quinone and iodine formation which is detected by reaction with starch gel giving Prussian blue colour.
{"title":"A New Approach to the Chemistry of the Serullas Test for Morphine","authors":"F. Sánchez-Viesca, Reina Gómez","doi":"10.34198/ejcs.9123.157162","DOIUrl":"https://doi.org/10.34198/ejcs.9123.157162","url":null,"abstract":"The tests for morphine are very important since this alkaloid is used in medicine for pain release but also it is a restricted drug due to abuse. The interaction of morphine with iodic acid has been used for its identification. In this communication the several redox reactions taking place during this test are explained in a new way. Activation of the organic-inorganic ester (mixed iodate) by protonation and water loosening creates a cationic intermediate with inverted polarity at the ortho-position. This innovation is important because there is no need to invoke electron back donation since this concept reverses the normal polarization of a functional group. Our novelty worked very well and explained the three successive redox steps taking place during the test, that is, until the oxidation to an ortho-quinone and iodine formation which is detected by reaction with starch gel giving Prussian blue colour.","PeriodicalId":11449,"journal":{"name":"Earthline Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87967701","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}
Pub Date : 2022-10-22DOI: 10.34198/ejcs.9123.121137
T. Seck, M. Gueye, I. Thiam, O. Diouf, M. Gaye, P. Retailleau
In the title compound, [Tb(H2L)2(H2O)3].3Cl.4(H2O).(C2H5OH), the Tb3+ is nine-coordinated in a distorted monocapped square antiprismgeometry by four nitrogen atoms, two oxygen atoms from the ligand molecules of the tridentate N,N'-1,5-bis(pyridylmethylidene) carbonohydrazone) (H2L) and three oxygen atoms of coordinating water molecules. The structure of the complex was elucidated by X-ray diffraction analysis. Suitable crystals were grown by slow evaporation of ethanol solution. The compound crystallizes in the triclinic crystal system with a space group of Pī. The asymmetric unit of the compound contains two neutral ligand molecules, oneterbium ion, three coordinated water molecules, five and half uncoordinated water molecules and one uncoordinated ethanol molecule. In the crystal, the complex cations are linked by hydrogen bonds into layers. These layers, chloride anions and non-coordinating water molecules are connected by O—H···O, O—H···N, O—H···Cl, N—H···O, N—H···Cl and C—H···Cl hydrogen bonds into a three-dimensional structure.
{"title":"Synthesis, Spectroscopic and X-Ray Structure Determination of a New Mononuclear Terbium (III) Complex from the Ligand N,N'-1,5-bis(pyridylmethylidene) Carbonohydrazone (H2L)","authors":"T. Seck, M. Gueye, I. Thiam, O. Diouf, M. Gaye, P. Retailleau","doi":"10.34198/ejcs.9123.121137","DOIUrl":"https://doi.org/10.34198/ejcs.9123.121137","url":null,"abstract":"In the title compound, [Tb(H2L)2(H2O)3].3Cl.4(H2O).(C2H5OH), the Tb3+ is nine-coordinated in a distorted monocapped square antiprismgeometry by four nitrogen atoms, two oxygen atoms from the ligand molecules of the tridentate N,N'-1,5-bis(pyridylmethylidene) carbonohydrazone) (H2L) and three oxygen atoms of coordinating water molecules. The structure of the complex was elucidated by X-ray diffraction analysis. Suitable crystals were grown by slow evaporation of ethanol solution. The compound crystallizes in the triclinic crystal system with a space group of Pī. The asymmetric unit of the compound contains two neutral ligand molecules, oneterbium ion, three coordinated water molecules, five and half uncoordinated water molecules and one uncoordinated ethanol molecule. In the crystal, the complex cations are linked by hydrogen bonds into layers. These layers, chloride anions and non-coordinating water molecules are connected by O—H···O, O—H···N, O—H···Cl, N—H···O, N—H···Cl and C—H···Cl hydrogen bonds into a three-dimensional structure.","PeriodicalId":11449,"journal":{"name":"Earthline Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86409917","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}
Pub Date : 2022-10-14DOI: 10.34198/ejcs.9123.103119
L. Türker
Ethosuximide is an imide which is often used in the treatment of typical epilepsy. Ethosuximide affects neuronal excitability by blocking T-type calcium channels. It may exhibit 1,3-type tautomerism (amide-iminol type tautomerism). All those possible tautomeric forms are considered. Additionally, interactions of those tautomers with calcium cation have been investigated. All the calculations have been performed within the realm of density functional theory with the constraints of B3LYP/6-311++G(d,p) level. The tautomers and their composites with calcium cation are found to be electronically stable and thermodynamically favorable structures. Ethosuximide tautomers have relatively much lower Boltzman distributions compared to ethosuximide. However, they form electronically stable and thermodynamically favorable composites with calcium cation. Also some quantum chemical and spectral properties of those systems have been obtained and discussed.
{"title":"Tautomers of Ethosuximide and their Interaction with Calcium Cation - A DFT Treatment","authors":"L. Türker","doi":"10.34198/ejcs.9123.103119","DOIUrl":"https://doi.org/10.34198/ejcs.9123.103119","url":null,"abstract":"Ethosuximide is an imide which is often used in the treatment of typical epilepsy. Ethosuximide affects neuronal excitability by blocking T-type calcium channels. It may exhibit 1,3-type tautomerism (amide-iminol type tautomerism). All those possible tautomeric forms are considered. Additionally, interactions of those tautomers with calcium cation have been investigated. All the calculations have been performed within the realm of density functional theory with the constraints of B3LYP/6-311++G(d,p) level. The tautomers and their composites with calcium cation are found to be electronically stable and thermodynamically favorable structures. Ethosuximide tautomers have relatively much lower Boltzman distributions compared to ethosuximide. However, they form electronically stable and thermodynamically favorable composites with calcium cation. Also some quantum chemical and spectral properties of those systems have been obtained and discussed.","PeriodicalId":11449,"journal":{"name":"Earthline Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74743160","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}
Pub Date : 2022-10-14DOI: 10.34198/ejcs.9123.77102
Mahi Agolé Mahi Arthur, Y. Konan, Claon Jean Stéphane, Trokourey Albert
The aim of this study is to assessment the effects of the seasonal water inputs on the seasonal dynamic of trace metals in the superficial sediments from the lagoon area II of Ébrié system. This study was implemented during one year (from June 2020 to May 2021) and all the physical and chemical parameters of these sediments, used in this study, were all obtained according to AFNOR standards. In hot season, the trace metal contents of these sediments, dominated by coarse sands in all seasons, were on the whole favored by the marine inputs; which would induce their very slightly basicity and reduce characters, low salinity and conductivity. However, the majority of their trace metals content decreases in rainy season with the meteorite inputs; would induce their slightly acidic and oxidizing characters and, the increase in their salinity and conductivity. These were again for the slightly basic and reduce characters of the open waters at the interface water-sediment, as their relative important salinity, conductivity and organic matter content in this season. The same effects were observed in flood season but a less marked by the important presence of Comoé river in this ecosystem.
{"title":"Trace Metals Behaviors in the Superficial Sediments from a Tropical Lagoon","authors":"Mahi Agolé Mahi Arthur, Y. Konan, Claon Jean Stéphane, Trokourey Albert","doi":"10.34198/ejcs.9123.77102","DOIUrl":"https://doi.org/10.34198/ejcs.9123.77102","url":null,"abstract":"The aim of this study is to assessment the effects of the seasonal water inputs on the seasonal dynamic of trace metals in the superficial sediments from the lagoon area II of Ébrié system. This study was implemented during one year (from June 2020 to May 2021) and all the physical and chemical parameters of these sediments, used in this study, were all obtained according to AFNOR standards. In hot season, the trace metal contents of these sediments, dominated by coarse sands in all seasons, were on the whole favored by the marine inputs; which would induce their very slightly basicity and reduce characters, low salinity and conductivity. However, the majority of their trace metals content decreases in rainy season with the meteorite inputs; would induce their slightly acidic and oxidizing characters and, the increase in their salinity and conductivity. These were again for the slightly basic and reduce characters of the open waters at the interface water-sediment, as their relative important salinity, conductivity and organic matter content in this season. The same effects were observed in flood season but a less marked by the important presence of Comoé river in this ecosystem.","PeriodicalId":11449,"journal":{"name":"Earthline Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81835182","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}
Heterocyclic compounds, such as benzimidazole derivatives, are a type of heterocyclic chemicals. Benzimidazole consists of a 6-atom benzene ring fused to the five-atom imidazole ring, which is an important structural property of this compound. A powerful inhibitor of various enzymes was used to investigate several pharmacological residences. Heterocyclic compounds, including benzimidazoles, are interested in being very effective compounds and are used in the preparation of many medicines, including as antiviral, anticancer, antiparasitic, antimicrobial, antihistamine, analgesic and as effective treatments for diabetes. Because of their stability, bioavailability, and have large organic activity, benzimidazole derivatives have multiple activities. Using various azole moieties, modifications to a few organic polymers was achieved. This article will discuss some of the current methodologies of synthesizing benzimidazoles and their pharmacological properties, as well as a variety of derivatives.
{"title":"Review: Using Metal Oxide Nanoparticles as Catalyst in Benzimidazoles Synthesis","authors":"A. Abdullah, S. A. Dadoosh, M. Thani, A. S. Fahad","doi":"10.34198/ejcs.9123.6376","DOIUrl":"https://doi.org/10.34198/ejcs.9123.6376","url":null,"abstract":"Heterocyclic compounds, such as benzimidazole derivatives, are a type of heterocyclic chemicals. Benzimidazole consists of a 6-atom benzene ring fused to the five-atom imidazole ring, which is an important structural property of this compound. A powerful inhibitor of various enzymes was used to investigate several pharmacological residences. Heterocyclic compounds, including benzimidazoles, are interested in being very effective compounds and are used in the preparation of many medicines, including as antiviral, anticancer, antiparasitic, antimicrobial, antihistamine, analgesic and as effective treatments for diabetes. Because of their stability, bioavailability, and have large organic activity, benzimidazole derivatives have multiple activities. Using various azole moieties, modifications to a few organic polymers was achieved. This article will discuss some of the current methodologies of synthesizing benzimidazoles and their pharmacological properties, as well as a variety of derivatives.","PeriodicalId":11449,"journal":{"name":"Earthline Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75134910","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}
The present study considers some of dacarbazine tautomers having resulted from 1,3- and 1,5-proton migration. Density functional approach has been adopted at the level of B3LYP/6-311++G(d,p) in order to obtain various geometrical, physicochemical, spectral and quantum chemical properties of the tautomers of concern. Also local aromaticity of the imidazole ring in some of the tautomers having 6π-electrons has been obtained by calculating the nucleolus independent chemical shift values.
{"title":"Some Tautomers of Dacarbazine - A DFT Study","authors":"L. Türker","doi":"10.34198/ejcs.9123.4762","DOIUrl":"https://doi.org/10.34198/ejcs.9123.4762","url":null,"abstract":"The present study considers some of dacarbazine tautomers having resulted from 1,3- and 1,5-proton migration. Density functional approach has been adopted at the level of B3LYP/6-311++G(d,p) in order to obtain various geometrical, physicochemical, spectral and quantum chemical properties of the tautomers of concern. Also local aromaticity of the imidazole ring in some of the tautomers having 6π-electrons has been obtained by calculating the nucleolus independent chemical shift values.","PeriodicalId":11449,"journal":{"name":"Earthline Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75166828","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}
M. A. Tigori, Aboudramane Koné, Koffi Amenan Mireille, D. Sissouma, P. Niamien
The present study was designed to determine the inhibition effect of 2-(1H-benzimidazol-2-yl)-3-(4-hydroxyphenyl) acrylonitrile in 1M HNO3 using a combined experimental and theoretical approach. Mass loss techniques revealed that 2-(1H-benzimidazol-2-yl)-3-(4-hydroxyphenyl) acrylonitrile inhibition efficiency is dependent on its concentration and temperature. It has been shown that the studied molecule inhibits copper corrosion by an adsorption behavior by donating and accepting electrons. Kinetic parameters have been determined and discussed. Quantum chemical parameters calculated by means of density functional theory (DFT) have shown that studied molecule reactivity is strongly related to the electronic properties, which could help to understand the molecule-metal interactions. The reactive sites have been determined by means of Fukui Functions and dual descriptor. Quantitative structure-property relationship (QSPR) model introduced in this study was used to find a set of quantum chemical parameters capable of correlating the experimental and theoretical data in order to design more suitable organic corrosion inhibitors. The theoretically obtained results were found to be consistent with the experimental data reported.
{"title":"Experimental and Theoretical Assessments on Anticorrosion Performance of 2-(1H-benzimidazol-2-yl)-3-(4-hydroxyphenyl) Acrylonitrile for Copper in 1M HNO3","authors":"M. A. Tigori, Aboudramane Koné, Koffi Amenan Mireille, D. Sissouma, P. Niamien","doi":"10.34198/ejcs.9123.1745","DOIUrl":"https://doi.org/10.34198/ejcs.9123.1745","url":null,"abstract":"The present study was designed to determine the inhibition effect of 2-(1H-benzimidazol-2-yl)-3-(4-hydroxyphenyl) acrylonitrile in 1M HNO3 using a combined experimental and theoretical approach. Mass loss techniques revealed that 2-(1H-benzimidazol-2-yl)-3-(4-hydroxyphenyl) acrylonitrile inhibition efficiency is dependent on its concentration and temperature. It has been shown that the studied molecule inhibits copper corrosion by an adsorption behavior by donating and accepting electrons. Kinetic parameters have been determined and discussed. Quantum chemical parameters calculated by means of density functional theory (DFT) have shown that studied molecule reactivity is strongly related to the electronic properties, which could help to understand the molecule-metal interactions. The reactive sites have been determined by means of Fukui Functions and dual descriptor. Quantitative structure-property relationship (QSPR) model introduced in this study was used to find a set of quantum chemical parameters capable of correlating the experimental and theoretical data in order to design more suitable organic corrosion inhibitors. The theoretically obtained results were found to be consistent with the experimental data reported.","PeriodicalId":11449,"journal":{"name":"Earthline Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82320932","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}
DNNC is an explosive as well as an oxidant for propellants and pyrotechnics. It possesses C-NO2 and N-NO2 bonds. In the present study, DNNC and aluminum interaction has been investigated within the limitations of density functional theory at the level of unrestricted B3LYP/6-31++G(d,p). The composites having formula of DNNC+Al and DNNC+2Al are considered. Since aluminum has an unpaired electron in the ground state, various multiplicities arise for the composites of present interest. Some geometrical, physico chemical, quantum chemical and some spectral data have been obtained and discussed. The calculations within the constraints of the theory and the basis set employed have indicated that DNNC+Al (doublet) keeps its structural integrity but DNNC+2Al composite either in singlet or triplet case expels one of the geminally substituted NO2 groups. However, the aluminum atom in each case acquires different kind of charge. The N-NO2 bonds remain intact in the presence of aluminum.
{"title":"Effect of Aluminum on 1,3,5,5-tetranitrohexahydropyrimidine (DNNC) - A DFT Treatment","authors":"L. Türker","doi":"10.34198/ejcs.9123.116","DOIUrl":"https://doi.org/10.34198/ejcs.9123.116","url":null,"abstract":"DNNC is an explosive as well as an oxidant for propellants and pyrotechnics. It possesses C-NO2 and N-NO2 bonds. In the present study, DNNC and aluminum interaction has been investigated within the limitations of density functional theory at the level of unrestricted B3LYP/6-31++G(d,p). The composites having formula of DNNC+Al and DNNC+2Al are considered. Since aluminum has an unpaired electron in the ground state, various multiplicities arise for the composites of present interest. Some geometrical, physico chemical, quantum chemical and some spectral data have been obtained and discussed. The calculations within the constraints of the theory and the basis set employed have indicated that DNNC+Al (doublet) keeps its structural integrity but DNNC+2Al composite either in singlet or triplet case expels one of the geminally substituted NO2 groups. However, the aluminum atom in each case acquires different kind of charge. The N-NO2 bonds remain intact in the presence of aluminum.","PeriodicalId":11449,"journal":{"name":"Earthline Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84940848","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}
In this study, we were interested in the valuation of Ocimum gratissimum, an aromatic and medicinal plant of the Ivorian flora. The essential oils of the leafy branches of Ocimum gratissimum were extracted by hydrodistillation with a Clévenger-type device. The yield of the oils obtained increases from (0.05±0.01%) to (0.42±0.08%) depending on the drying time. The density of essential oils is almost constant at 0.80. The chemical composition of essential oils was identified after analysis of chromatograms and mass spectra. The number of phytocompounds also increases with the number of drying days from 32 to 37. These compounds are marked by the presence of hydrocarbon monoterpenes from (29.11% to 49.1%), and oxygenated from (40.33% to 50.02%) and the presence of hydrocarbon sesquiterpenes from (5.52% to 8.55%), and oxygenated from (0.80% to 2.16%). The number of major compounds is 5 on day 0 and decreases to 4 on the other days, and have the following proportions: thymol from (33.60% to 44.73%), β‑caryophyllene from (2.54% to 3.29%), para-cymene (12.32% to 25.60%), γ-terpinene (10.09% to 11.41%), Bis(2-ethylhexyl)phthalate (12.12% to 0.42%). bis (2-ethylhexyl) phthalate which is in the minority during the other drying days.
{"title":"Effect of Drying the Chemical Composition of the Essential Oil of Ocimum gratissimum L (Lamiaceae) Harvested in the Tonkpi Region (Ivory Coast)","authors":"Konan N’dri Séraphin, Yéo Sounta Oumar, Dan Eude Kpannieu, Prao Kouassi Modeste, Kouamé Bosson Antoine, Mamyr Békova-Békro Janat Akhanovna, B. Yves-Alain","doi":"10.34198/ejcs.8222.275289","DOIUrl":"https://doi.org/10.34198/ejcs.8222.275289","url":null,"abstract":"In this study, we were interested in the valuation of Ocimum gratissimum, an aromatic and medicinal plant of the Ivorian flora. The essential oils of the leafy branches of Ocimum gratissimum were extracted by hydrodistillation with a Clévenger-type device. The yield of the oils obtained increases from (0.05±0.01%) to (0.42±0.08%) depending on the drying time. The density of essential oils is almost constant at 0.80. The chemical composition of essential oils was identified after analysis of chromatograms and mass spectra. The number of phytocompounds also increases with the number of drying days from 32 to 37. These compounds are marked by the presence of hydrocarbon monoterpenes from (29.11% to 49.1%), and oxygenated from (40.33% to 50.02%) and the presence of hydrocarbon sesquiterpenes from (5.52% to 8.55%), and oxygenated from (0.80% to 2.16%). The number of major compounds is 5 on day 0 and decreases to 4 on the other days, and have the following proportions: thymol from (33.60% to 44.73%), β‑caryophyllene from (2.54% to 3.29%), para-cymene (12.32% to 25.60%), γ-terpinene (10.09% to 11.41%), Bis(2-ethylhexyl)phthalate (12.12% to 0.42%). bis (2-ethylhexyl) phthalate which is in the minority during the other drying days.","PeriodicalId":11449,"journal":{"name":"Earthline Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82417238","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}
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