Pub Date : 2020-09-19DOI: 10.14419/ijac.v8i2.30926
K. K, J. Gnana Babu C., Sowmya H.G
A simple, rapid and accurate High performance thin layer chromatography is described for the Development and validation of HPTLC method for Valganciclovir Hydrochloride in bulk and Pharmaceutical dosage form. The separation is carried out on Merck TLC aluminum sheets of silica gel 60 F254 using Chloroform: Methanol: Ammonia (6.5:3.4:0.1v/v) mobile phase. Quantification was done by Densitometric scanning at 254nm. The linearity was found to be the range of 100-500ng/spot for Valganciclovir hydrochloride with the correlation coefficient of 0.9993. The regression equation was found to be Y=10.168x-94.8. The Rf value of Valganciclovir hydrochloride was found to be 0.74. The LOD and LOQ were found to 9.19 and 27.87 respectively. Average recovery was found to be 99.66% which show that the method was free from interference from excipients present in the formulation. Simultaneously the Percentage relative standard deviation was well within the range of 2%. The above method was validated according to the ICH guidelines. The established method enabled accurate, precise and applied to the analysis of Valganciclovir hydrochloride in bulk and Pharmaceutical dosage form.
{"title":"Development and validation of valganciclovir hydrochloride in bulk and pharmaceutical dosage form by HPTLC method","authors":"K. K, J. Gnana Babu C., Sowmya H.G","doi":"10.14419/ijac.v8i2.30926","DOIUrl":"https://doi.org/10.14419/ijac.v8i2.30926","url":null,"abstract":"A simple, rapid and accurate High performance thin layer chromatography is described for the Development and validation of HPTLC method for Valganciclovir Hydrochloride in bulk and Pharmaceutical dosage form. The separation is carried out on Merck TLC aluminum sheets of silica gel 60 F254 using Chloroform: Methanol: Ammonia (6.5:3.4:0.1v/v) mobile phase. Quantification was done by Densitometric scanning at 254nm. The linearity was found to be the range of 100-500ng/spot for Valganciclovir hydrochloride with the correlation coefficient of 0.9993. The regression equation was found to be Y=10.168x-94.8. The Rf value of Valganciclovir hydrochloride was found to be 0.74. The LOD and LOQ were found to 9.19 and 27.87 respectively. Average recovery was found to be 99.66% which show that the method was free from interference from excipients present in the formulation. Simultaneously the Percentage relative standard deviation was well within the range of 2%. The above method was validated according to the ICH guidelines. The established method enabled accurate, precise and applied to the analysis of Valganciclovir hydrochloride in bulk and Pharmaceutical dosage form. ","PeriodicalId":13723,"journal":{"name":"International Journal of Advanced Chemistry","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83685287","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}
Interaction between globular proteins with imidazolium based ionic liquids (ILs) is extremely significant considering that of the vast use of ILs, since protein stabilizer in the current years. The present work, the interaction of human serum albumin (HSA) and bovine serum albumin (BSA) with 1-butyl-3-methylimidazolium octylsulphate (BmimOS) and 1-decyl-3-methylimidazolium tetrafluoroborate (DmimBF4) have been examine the use of fluorescence and FTIR. Fluorescence spectra of HSA/BSA are extinguished by BmimOS /DmimBF4 ILs by way of the dynamic method. The various thermodynamic parameters were revealing that very susceptible interactions exist between HSA/BSA and BmimOS /DmimBF4. The conformational adjustments of HSA/BSA were observed by means of FTIR analysis. Fluorescence methods were completed to find out about the thermal balance of HSA/BSA at different temperature. The thermal balance of BSA in the presence of ILs follows the style BmimOS/DmimBF4 and presence of extra hydrophobic IL, decay increases swiftly as a characteristic of concentration.
{"title":"Molecular interaction on imidazolium based ionic liquids and serum albumin: A spectroscopy approach","authors":"Manoj Kumar Banjare, Ramesh Kumar Banjare, Kallol Kumar Ghosh","doi":"10.14419/ijac.v8i2.30994","DOIUrl":"https://doi.org/10.14419/ijac.v8i2.30994","url":null,"abstract":"Interaction between globular proteins with imidazolium based ionic liquids (ILs) is extremely significant considering that of the vast use of ILs, since protein stabilizer in the current years. The present work, the interaction of human serum albumin (HSA) and bovine serum albumin (BSA) with 1-butyl-3-methylimidazolium octylsulphate (BmimOS) and 1-decyl-3-methylimidazolium tetrafluoroborate (DmimBF4) have been examine the use of fluorescence and FTIR. Fluorescence spectra of HSA/BSA are extinguished by BmimOS /DmimBF4 ILs by way of the dynamic method. The various thermodynamic parameters were revealing that very susceptible interactions exist between HSA/BSA and BmimOS /DmimBF4. The conformational adjustments of HSA/BSA were observed by means of FTIR analysis. Fluorescence methods were completed to find out about the thermal balance of HSA/BSA at different temperature. The thermal balance of BSA in the presence of ILs follows the style BmimOS/DmimBF4 and presence of extra hydrophobic IL, decay increases swiftly as a characteristic of concentration. ","PeriodicalId":13723,"journal":{"name":"International Journal of Advanced Chemistry","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84831484","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 : 2020-09-19DOI: 10.14419/ijac.v8i2.31050
Ige Ayodeji Rapheal, Elinge Cosmos Moki, A. Muhammad, G. Muhammed, Lawal Gusau Hassan
Renewable plant materials are regarded as one of the most affirmative option for the production of fuels and chemicals. With the concept of pyrolysis process, there is every possibility to produce alternative sources of energy and fuels from renewable biomass. The study depicts the production, optimization and characterization of bio-oil from pyrolyzed groundnut shell using fabricated reactor. The pyrolysis process was produced with bio-oil response, bio-char response and non condensable gases response as products. The effect of pyrolysis variables were observed by the production of the bio-oil as the response. Sixty runs of pyrolysis experiments were suggested by box Benkhen design indicated optimum pyrolysis condition at particle size of 1.15mm mesh, reaction time of 83 mins and temperature of 650oC. The maximum bio-oil yield was obtained with 33.91% at optimum condition. The bio-oil samples had better performance which met the specifications for the measured properties and compares well with the ASTM standard. Therefore, using groundnut shell for bio-oil production via pyrolysis process can serve as an approach of providing a sustainable alternative source of fuel and friendly environment.
{"title":"Optimization of groundnut shell fast pyrolysis for the production and characterization of bio-oil using fabricated fixed bed reactor","authors":"Ige Ayodeji Rapheal, Elinge Cosmos Moki, A. Muhammad, G. Muhammed, Lawal Gusau Hassan","doi":"10.14419/ijac.v8i2.31050","DOIUrl":"https://doi.org/10.14419/ijac.v8i2.31050","url":null,"abstract":"Renewable plant materials are regarded as one of the most affirmative option for the production of fuels and chemicals. With the concept of pyrolysis process, there is every possibility to produce alternative sources of energy and fuels from renewable biomass. The study depicts the production, optimization and characterization of bio-oil from pyrolyzed groundnut shell using fabricated reactor. The pyrolysis process was produced with bio-oil response, bio-char response and non condensable gases response as products. The effect of pyrolysis variables were observed by the production of the bio-oil as the response. Sixty runs of pyrolysis experiments were suggested by box Benkhen design indicated optimum pyrolysis condition at particle size of 1.15mm mesh, reaction time of 83 mins and temperature of 650oC. The maximum bio-oil yield was obtained with 33.91% at optimum condition. The bio-oil samples had better performance which met the specifications for the measured properties and compares well with the ASTM standard. Therefore, using groundnut shell for bio-oil production via pyrolysis process can serve as an approach of providing a sustainable alternative source of fuel and friendly environment. ","PeriodicalId":13723,"journal":{"name":"International Journal of Advanced Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89673601","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 : 2020-09-02DOI: 10.14419/ijac.v8i2.30963
Kirankumar S V, J. Gnana Babu C., S. H G
A novel and simple HPTLC method has been developed for the estimation of Cefadroxil (CFD) in bulk and pharmaceutical dosage form on silica gel precoated aluminum 60F254 plates, (10 cm x10 cm) with 0.25 mm thickness. The separation was carried out using ethyl acetate: chloroform (8:2v/v) as mobile phase. The Chromatographic scanning was carried out at 254 nm. The Rf (± SD) values were found to be 0.38 ± 0.05 for CFD. The linearity for analyte was in the range 100-500 ng/band for CFD with correlation coefficients, r2 = 0.9996. The percentage recovery obtained for CFD was in the range of 99.28-100.13% respectively. The proposed method was optimized and validated as per the ICH guidelines17.
{"title":"Development and validation of HPTLC method for the estimation of cefadroxil in bulk and tablet dosage form","authors":"Kirankumar S V, J. Gnana Babu C., S. H G","doi":"10.14419/ijac.v8i2.30963","DOIUrl":"https://doi.org/10.14419/ijac.v8i2.30963","url":null,"abstract":"A novel and simple HPTLC method has been developed for the estimation of Cefadroxil (CFD) in bulk and pharmaceutical dosage form on silica gel precoated aluminum 60F254 plates, (10 cm x10 cm) with 0.25 mm thickness. The separation was carried out using ethyl acetate: chloroform (8:2v/v) as mobile phase. The Chromatographic scanning was carried out at 254 nm. The Rf (± SD) values were found to be 0.38 ± 0.05 for CFD. The linearity for analyte was in the range 100-500 ng/band for CFD with correlation coefficients, r2 = 0.9996. The percentage recovery obtained for CFD was in the range of 99.28-100.13% respectively. The proposed method was optimized and validated as per the ICH guidelines17. ","PeriodicalId":13723,"journal":{"name":"International Journal of Advanced Chemistry","volume":"191 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91115927","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 : 2020-08-04DOI: 10.14419/ijac.v8i1.30800
Yogeesh C S, S. H G, J. Gnana Babu C.
A simple, rapid and accurate High performance thin layer chromatography is described for the Development and validation of HPTLC method for Irbesartan in bulk and Pharmaceutical dosage form. The separation is carried out on Merck TLC aluminum sheets of silica gel 60 F254 using Ethyl acetate: Chloroform (6.5:3.5v/v) mobile phase. Quantification was done by Densitometric scanning at 254nm. The linearity was found to be the range of 100-500ng/spot for Irbesartan with the correlation coefficient of 0.9992. The regression equation was found to be Y=7.2733x+703.15. The Rf value of Irbesartan was found to be 0.55. The LOD and LOQ were found to 8.24 and 24.74 respectively. Average recovery was found to be 99.66% which show that the method was free from interference from excipients present in the formulation. Simultaneously the Percentage relative standard deviation was well within the range of 2%. The above method was validated according to the ICH guidelines. The established method enabled accurate, precise and applied to the analysis of Irbesartan in bulk and Pharmaceutical dosage form.
{"title":"Development and validatation of HPTLC method for estimation of irbesartan in bulk and tablet dosage form","authors":"Yogeesh C S, S. H G, J. Gnana Babu C.","doi":"10.14419/ijac.v8i1.30800","DOIUrl":"https://doi.org/10.14419/ijac.v8i1.30800","url":null,"abstract":"A simple, rapid and accurate High performance thin layer chromatography is described for the Development and validation of HPTLC method for Irbesartan in bulk and Pharmaceutical dosage form. The separation is carried out on Merck TLC aluminum sheets of silica gel 60 F254 using Ethyl acetate: Chloroform (6.5:3.5v/v) mobile phase. Quantification was done by Densitometric scanning at 254nm. The linearity was found to be the range of 100-500ng/spot for Irbesartan with the correlation coefficient of 0.9992. The regression equation was found to be Y=7.2733x+703.15. The Rf value of Irbesartan was found to be 0.55. The LOD and LOQ were found to 8.24 and 24.74 respectively. Average recovery was found to be 99.66% which show that the method was free from interference from excipients present in the formulation. Simultaneously the Percentage relative standard deviation was well within the range of 2%. The above method was validated according to the ICH guidelines. The established method enabled accurate, precise and applied to the analysis of Irbesartan in bulk and Pharmaceutical dosage form. ","PeriodicalId":13723,"journal":{"name":"International Journal of Advanced Chemistry","volume":"217 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77558070","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 : 2020-07-25DOI: 10.14419/ijac.v8i1.30889
M. E. Ghanjaoui, I. Adraoui, A. Gammoun, L. Cervera, M. El Rhazi, M. de la Guardia
This study aimed to determine the total arsenic concentration in lipsticks and evaluate the potential health risks due to daily ingestion of this toxic element from this product. The samples were analyzed using atomic fluorescence spectrometry technique after mineralization and hydride generation (HG-AFS). The calibration curve is linear over a concentration range from 0.125 to 2 µg L-1 with a regression coefficient of the order of 0.9899. The limit of detection is reaches 3 ng g-1. The standard deviation is of the order of 4%.The accuracy of this method was evaluated by calculating the recoveries of additions of arsenic to three lipstick samples. These results indicate recovery rates between 91% and 98%. Finely, the results found demonstrate that the method used in this work is suitable for arsenic detection in lipsticks samples.
本研究旨在确定口红中砷的总浓度，并评估每日从该产品中摄入这种有毒元素所带来的潜在健康风险。矿化和氢化物生成后，采用原子荧光光谱法(HG-AFS)对样品进行分析。在0.125 ~ 2µg L-1的浓度范围内，校正曲线呈线性，回归系数为0.9899数量级。检测限为3 ng g-1。标准差约为4%。通过计算三种口红样品中砷的添加回收率，评价了该方法的准确性。结果表明，回收率在91% ~ 98%之间。结果表明，本方法适用于口红样品中砷的检测。
{"title":"Hydride generation atomic fluorescence spectrometry (HG-AFS) determination of total arsenic in lipstick","authors":"M. E. Ghanjaoui, I. Adraoui, A. Gammoun, L. Cervera, M. El Rhazi, M. de la Guardia","doi":"10.14419/ijac.v8i1.30889","DOIUrl":"https://doi.org/10.14419/ijac.v8i1.30889","url":null,"abstract":"This study aimed to determine the total arsenic concentration in lipsticks and evaluate the potential health risks due to daily ingestion of this toxic element from this product. The samples were analyzed using atomic fluorescence spectrometry technique after mineralization and hydride generation (HG-AFS). The calibration curve is linear over a concentration range from 0.125 to 2 µg L-1 with a regression coefficient of the order of 0.9899. The limit of detection is reaches 3 ng g-1. The standard deviation is of the order of 4%.The accuracy of this method was evaluated by calculating the recoveries of additions of arsenic to three lipstick samples. These results indicate recovery rates between 91% and 98%. Finely, the results found demonstrate that the method used in this work is suitable for arsenic detection in lipsticks samples. ","PeriodicalId":13723,"journal":{"name":"International Journal of Advanced Chemistry","volume":"74 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81420117","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 : 2020-07-25DOI: 10.14419/ijac.v8i1.26278
A. Adeniyi, Sulaiman Wasiu Kayode, Akinyode Olakunle Abayomi
The physicochemical properties of the seed and fatty acid profile of the seed oil of Caesalpinia bonducella were analyzed in this study, using standard methods of the Association of Official Analytical Chemists (AOAC). The proximate composition was found as follows: Moisture (3.24%), crude fat (41.76%), crude protein (28.63%), crude fibre (4.35%), ash content (2.94%) and carbohydrate (19.08%). The total unsaturated fatty acids (57.36%) was more abundant than the total saturated ones (42.68%). The seed oil had a high level of linoleic acid (28.15%), followed by oleic (18.41%), stearic (13.83%) and palmitic (13.56%). Other fatty acids had less than 10% each. There was a high level of unsaturation (57.36%) with oleic and linoleic acids dominating all other fatty acids with a total of 46.56%. The percentage of essential fatty acids (linoleic & linolenic acids) (32.96%) was also high at about ⅓ of the total oil content. The total poly-unsaturated fatty acids (36.99%) was higher than those of mono-unsaturated (20.37%). The high level of poly-unsaturated fatty acids in the oil sample is an advantage as these are essential components of the diet of man. The good total unsaturated/saturated (or P/S) ratio of the oil, (i.e.1.344), makes it to be very nutritionally useful if adopted for domestic purposes.
{"title":"The nutritional potentials and the fatty acid profile of the seed and seed oil of Caesalpinia bonducella","authors":"A. Adeniyi, Sulaiman Wasiu Kayode, Akinyode Olakunle Abayomi","doi":"10.14419/ijac.v8i1.26278","DOIUrl":"https://doi.org/10.14419/ijac.v8i1.26278","url":null,"abstract":"The physicochemical properties of the seed and fatty acid profile of the seed oil of Caesalpinia bonducella were analyzed in this study, using standard methods of the Association of Official Analytical Chemists (AOAC). The proximate composition was found as follows: Moisture (3.24%), crude fat (41.76%), crude protein (28.63%), crude fibre (4.35%), ash content (2.94%) and carbohydrate (19.08%). The total unsaturated fatty acids (57.36%) was more abundant than the total saturated ones (42.68%). The seed oil had a high level of linoleic acid (28.15%), followed by oleic (18.41%), stearic (13.83%) and palmitic (13.56%). Other fatty acids had less than 10% each. There was a high level of unsaturation (57.36%) with oleic and linoleic acids dominating all other fatty acids with a total of 46.56%. The percentage of essential fatty acids (linoleic & linolenic acids) (32.96%) was also high at about ⅓ of the total oil content. The total poly-unsaturated fatty acids (36.99%) was higher than those of mono-unsaturated (20.37%). The high level of poly-unsaturated fatty acids in the oil sample is an advantage as these are essential components of the diet of man. The good total unsaturated/saturated (or P/S) ratio of the oil, (i.e.1.344), makes it to be very nutritionally useful if adopted for domestic purposes. ","PeriodicalId":13723,"journal":{"name":"International Journal of Advanced Chemistry","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85215391","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 : 2020-07-25DOI: 10.14419/ijac.v8i1.30753
Shreyas Parbat
In the present work, quantum chemical study of the harmful dye, metanil yellow is conducted. The optimized molecular geometry and harmonic vibrational frequencies of metanil yellow were calculated by DFT-B3LYP method with LANL2DZ basis set. The vibrational assignments were performed on the basis of the potential energy distribution (PED) of the vibrational modes. Infrared spectra and Bulk Raman spectra were also obtained and characteristic peaks for the title compound were studied. The nonlinear optical properties of the title compound were calculated and discussed. Dipole moment, polarizability and first-order hyperpolarizability of the title compound were reported in order to study nonlinear optical properties (NLO). HOMO-LUMO energy levels were also computed in order to get the bandgap energy. Global reactivity descriptors were calculated using the HOMO and LUMO to predict compound reactivity. UV–Vis spectrum of the title compound was calculated using TD–DFT method. The molecular orbital contributions were studied by density of states (DOSs). Mulliken atomic charges and atomic polar tensors (APT) on each atom were tabulated. A discussion of the vibrational energy of each mode is also presented in this article.
{"title":"Quantum chemical analysis of harmful dye 3-[ (4-anilinophenyl) diazenyl] benzenesulfonate, metanil yellow","authors":"Shreyas Parbat","doi":"10.14419/ijac.v8i1.30753","DOIUrl":"https://doi.org/10.14419/ijac.v8i1.30753","url":null,"abstract":"In the present work, quantum chemical study of the harmful dye, metanil yellow is conducted. The optimized molecular geometry and harmonic vibrational frequencies of metanil yellow were calculated by DFT-B3LYP method with LANL2DZ basis set. The vibrational assignments were performed on the basis of the potential energy distribution (PED) of the vibrational modes. Infrared spectra and Bulk Raman spectra were also obtained and characteristic peaks for the title compound were studied. The nonlinear optical properties of the title compound were calculated and discussed. Dipole moment, polarizability and first-order hyperpolarizability of the title compound were reported in order to study nonlinear optical properties (NLO). HOMO-LUMO energy levels were also computed in order to get the bandgap energy. Global reactivity descriptors were calculated using the HOMO and LUMO to predict compound reactivity. UV–Vis spectrum of the title compound was calculated using TD–DFT method. The molecular orbital contributions were studied by density of states (DOSs). Mulliken atomic charges and atomic polar tensors (APT) on each atom were tabulated. A discussion of the vibrational energy of each mode is also presented in this article. ","PeriodicalId":13723,"journal":{"name":"International Journal of Advanced Chemistry","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89684634","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 : 2020-06-14DOI: 10.14419/ijac.v8i1.30712
Z. Y. Abba, S. M.Gumel, A. A.Idris, M. A.Ibrahim
The increased application of paint in coating industry for interior and exterior decoration and corrosion inhibition, has inspired research in paint formulations. However, due to the toxic effect of preparatory chemicals used in paints, and the restrictive environmental legislation, research efforts have been directed to a more green process. In this work colouring matter from Lawsonia inermis leaves were extracted using water and analyzed by TLC and FTIR spectroscopy. White emulsion paint was formulated using pigment volume concentration (PVC) of 0.07%, the colouring matter extract was dispersed providing colour for the paint. The paint produced with the natural colourant was found to have similar properties with the paint produced using commercial pigment. Paint produced with aqueous extract faded under exposure to 5000 watts Tungsten Lamp after 48 hours but showed excellent fastness to rubbing. The extract induced excellent brownish colouration in the paint which maintained excellent, opacity, adhesion and good water resistance.
{"title":"Formulation of Paint using Natural Pigment from Lawsonia Inermis Leaves","authors":"Z. Y. Abba, S. M.Gumel, A. A.Idris, M. A.Ibrahim","doi":"10.14419/ijac.v8i1.30712","DOIUrl":"https://doi.org/10.14419/ijac.v8i1.30712","url":null,"abstract":"The increased application of paint in coating industry for interior and exterior decoration and corrosion inhibition, has inspired research in paint formulations. However, due to the toxic effect of preparatory chemicals used in paints, and the restrictive environmental legislation, research efforts have been directed to a more green process. In this work colouring matter from Lawsonia inermis leaves were extracted using water and analyzed by TLC and FTIR spectroscopy. White emulsion paint was formulated using pigment volume concentration (PVC) of 0.07%, the colouring matter extract was dispersed providing colour for the paint. The paint produced with the natural colourant was found to have similar properties with the paint produced using commercial pigment. Paint produced with aqueous extract faded under exposure to 5000 watts Tungsten Lamp after 48 hours but showed excellent fastness to rubbing. The extract induced excellent brownish colouration in the paint which maintained excellent, opacity, adhesion and good water resistance. ","PeriodicalId":13723,"journal":{"name":"International Journal of Advanced Chemistry","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87972377","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 : 2020-06-14DOI: 10.14419/ijac.v8i1.30676
Safiyya Ibrahim Abubakar, Muhammad Adamu Ibrahim, Muhammad Bashir Ibrahim
This study was aimed to evaluate the adsorption of Methyl orange (MO) onto raw maize cob (RMC) and maize cob activated carbon (MCAC) from aqueous solution using batch adsorption studies. The produced adsorbents were characterized by Scanning electron microscope (SEM), and Fourier transform infrared spectroscopy (FTIR). The influence of contact time, dosage, concentration, temperature, and pH were investigated as well as Isotherm and Thermodynamic studies. Effect of contact time showed that Methyl orange adsorption were found to reach equilibrium within 125 and 110 minutes with optimum percentage removal of about 86.98% and 94.57% for raw maize cob and maize cob activated carbon respectively. The dye removal efficiency was found to increase with increasing initial dye concentration from 10 mg/L to 100 mg/L, and adsorption efficiency was found to be high at lower pH. However, increase in the dosage of the adsorbents lead to the increase in the adsorption process. The equilibrium adsorption data were analyzed using four adsorption models: Langmuir, Freundlich, Temkin, and D-R. The results revealed that MO with raw maize cob and maize cob activated carbon fit well to Freundlich with R2 value 0.977 and Temkin with R2 value 0.990 respectively and mean adsorption energy calculated from D-R shows it is physical adsorption and also values of enthalpy and Gibbs free energy proves that. Values of activation parameters such as free energy changes (∆G), enthalpy change (∆H) and entropy change (∆S) were calculated using Van't Hoff equation. All ∆G values were negative indicating that the adsorption was feasible and spontaneous. The result indicated that RMC and MCAC can be used for removal of MO from aqueous solution. The maize cob waste which is discarded as waste material was found to be effective adsorbent for the removal of Methyl orange dye from aqueous solution.
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