Asmaa Ali Al-Serhan, "Ayat Allah" Al-Massaedh, Idrees Faleh Al-Momani
The objective of this study was to measure the concentrations of selected heavy metals (Pb, Cd, Zn, Cu, Fe, Cr, Co, Ni, and Mn) in house dust collected during the summer and winter seasons from Mafraq and Irbid cities, Jordan. The average concentrations (±SD) of the metals were found to be 66.8 (±22.4), 10.8 (±3.75), 366 (±108), 81.6 (±43.9), 7586 (±4304), and 37.2 (±15.4) mg/kg, for Pb, Cd, Zn, Cu, Fe, and Cr, respectively, in the summer season. The average concentrations (±SD) of the metals were found to be 92.8 (±65.5), 5.10 (±4.75), 305 (±160), 144 (±163), 5385 (±3812), 27.1 (±15.1), 18.7 (±3.70), 42.2 (±15.1), and 139 (±69.2) mg/kg, for Pb, Cd, Zn, Cu, Fe, Cr, Co, Ni, and Mn, respectively, in the winter season. The influence of different heating systems on the concertation of heavy metal was examined by comparing the results obtained in both summer and winter seasons. The concentrations of the metals in this study were compared with those reported by other researchers around the world. This study shows that the significant accumulation of heavy metals in house dust should be considered a serious risk to the health of residents in Mafraq and Irbid cities.
{"title":"Determination of Heavy Metal Concentrations in Household Dusts in Irbid and Mafraq Cities, Jordan","authors":"Asmaa Ali Al-Serhan, \"Ayat Allah\" Al-Massaedh, Idrees Faleh Al-Momani","doi":"10.22146/ijc.85062","DOIUrl":"https://doi.org/10.22146/ijc.85062","url":null,"abstract":"The objective of this study was to measure the concentrations of selected heavy metals (Pb, Cd, Zn, Cu, Fe, Cr, Co, Ni, and Mn) in house dust collected during the summer and winter seasons from Mafraq and Irbid cities, Jordan. The average concentrations (±SD) of the metals were found to be 66.8 (±22.4), 10.8 (±3.75), 366 (±108), 81.6 (±43.9), 7586 (±4304), and 37.2 (±15.4) mg/kg, for Pb, Cd, Zn, Cu, Fe, and Cr, respectively, in the summer season. The average concentrations (±SD) of the metals were found to be 92.8 (±65.5), 5.10 (±4.75), 305 (±160), 144 (±163), 5385 (±3812), 27.1 (±15.1), 18.7 (±3.70), 42.2 (±15.1), and 139 (±69.2) mg/kg, for Pb, Cd, Zn, Cu, Fe, Cr, Co, Ni, and Mn, respectively, in the winter season. The influence of different heating systems on the concertation of heavy metal was examined by comparing the results obtained in both summer and winter seasons. The concentrations of the metals in this study were compared with those reported by other researchers around the world. This study shows that the significant accumulation of heavy metals in house dust should be considered a serious risk to the health of residents in Mafraq and Irbid cities.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136112651","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}
Farrah Nurkhaliza, Ahmad Fathoni, Muhammad Eka Prastya, Zetryana Puteri Tachrim, Abdul Aji, Agustina Sus Andreani
A rapid and selective colorimetric detection of Ni2+ was developed using silver nanoparticles (AgNPs) with β-cyclodextrin (β-CDs) as reducing and stabilizing agents. Characterization was assessed by spectrophotometer UV-vis, Fourier transform infra-red (FTIR), transmission electron microscopy (TEM), and particle size analyzer (PSA). The AgNPs-β-CDs were relatively stable after being stored for 5 months. The addition of Ni2+ to the AgNPs-β-CDs shifted the surface plasmon resonance (SPR) band at 409 nm. Synthesized AgNPs-β-CDs had a spherical shape and an average size of 25.07 ± 0.66 nm (analyzed by TEM) and 33.63 ± 0.25 nm, as confirmed by PSA. AgNPs-β-CDs as colorimetric sensors for Ni2+ ions had a good linear calibration curve at 409 nm with the R2 value of 0.9993. The limit of detection (LoD) was found to be 33.30 ppb, while the limit of quantification (LoQ) was 111.0 ppb. This sensor had been applied to a seawater sample from Ancol Beach, North Jakarta, Indonesia and it exhibited good precision and accuracy. In this work, β-CDs-synthesized AgNPs were able to detect Ni2+ ions and were beneficial as an alternative method for Ni2+ screening in environmental samples.
{"title":"Development of a Rapid and Sensitive Probe for Colorimetric Detection of Ni<sup>2+</sup> Ion in Water Sample by β-Cyclodextrin Stabilized Silver Nanoparticles","authors":"Farrah Nurkhaliza, Ahmad Fathoni, Muhammad Eka Prastya, Zetryana Puteri Tachrim, Abdul Aji, Agustina Sus Andreani","doi":"10.22146/ijc.83789","DOIUrl":"https://doi.org/10.22146/ijc.83789","url":null,"abstract":"A rapid and selective colorimetric detection of Ni2+ was developed using silver nanoparticles (AgNPs) with β-cyclodextrin (β-CDs) as reducing and stabilizing agents. Characterization was assessed by spectrophotometer UV-vis, Fourier transform infra-red (FTIR), transmission electron microscopy (TEM), and particle size analyzer (PSA). The AgNPs-β-CDs were relatively stable after being stored for 5 months. The addition of Ni2+ to the AgNPs-β-CDs shifted the surface plasmon resonance (SPR) band at 409 nm. Synthesized AgNPs-β-CDs had a spherical shape and an average size of 25.07 ± 0.66 nm (analyzed by TEM) and 33.63 ± 0.25 nm, as confirmed by PSA. AgNPs-β-CDs as colorimetric sensors for Ni2+ ions had a good linear calibration curve at 409 nm with the R2 value of 0.9993. The limit of detection (LoD) was found to be 33.30 ppb, while the limit of quantification (LoQ) was 111.0 ppb. This sensor had been applied to a seawater sample from Ancol Beach, North Jakarta, Indonesia and it exhibited good precision and accuracy. In this work, β-CDs-synthesized AgNPs were able to detect Ni2+ ions and were beneficial as an alternative method for Ni2+ screening in environmental samples.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136113418","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}
Karrar Majeed Obaid, Ahmed Saadoon Abbas, Yahya Fahim Al-Khafaji
Dyes are the most widely employed materials for coloring applications, especially for industrial purposes; thus, dyes are applied in the textile, cosmetics and foodstuffs. Dyes are very important owing to their applications in all aspects of human life. Accordingly, the production volume of dyes around the world is increasing. In this study, a new type of multifunctional material: polyaniline/Nb2O5/MnO2 and polyaniline/Nb2O5/Cr2O3 nanocomposites, was prepared by chemical polymerization from aniline monomer in the presence of metal oxides (Nb2O5, Cr2O3, and MnO2) and an oxidant (ammonium persulfate) in acidic aqueous solution for the elimination of dye from water. Herein, the nanocomposite was found to be a favorable adsorbent for wastewater treatment due to its high adsorption and efficiency, self-regeneration quality, low cost and easy synthesis. Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy and UV-visible spectroscopy were used to assess the synthesized nanocomposites' characteristics. From the results, we discovered that polyaniline nanocomposites doped with Nb2O5 and MnO2 nanoparticles had a higher adsorption efficiency (~97.37%) than those found in polyaniline with Cr2O3 and MnO2 (~94.3%). We looked at the adsorption conditions, including the medium's pH, the initial dye concentration, the dosage of the adsorbent, and the adsorption time.
{"title":"Removal of Methyl Orange Using Nanocomposites Based on Polyaniline/Nb<sub>2</sub>O<sub>5</sub>/MnO<sub>2</sub> and Polyaniline/Nb<sub>2</sub>O<sub>5</sub>/Cr<sub>2</sub>O<sub>3</sub> as New Adsorbents","authors":"Karrar Majeed Obaid, Ahmed Saadoon Abbas, Yahya Fahim Al-Khafaji","doi":"10.22146/ijc.82417","DOIUrl":"https://doi.org/10.22146/ijc.82417","url":null,"abstract":"Dyes are the most widely employed materials for coloring applications, especially for industrial purposes; thus, dyes are applied in the textile, cosmetics and foodstuffs. Dyes are very important owing to their applications in all aspects of human life. Accordingly, the production volume of dyes around the world is increasing. In this study, a new type of multifunctional material: polyaniline/Nb2O5/MnO2 and polyaniline/Nb2O5/Cr2O3 nanocomposites, was prepared by chemical polymerization from aniline monomer in the presence of metal oxides (Nb2O5, Cr2O3, and MnO2) and an oxidant (ammonium persulfate) in acidic aqueous solution for the elimination of dye from water. Herein, the nanocomposite was found to be a favorable adsorbent for wastewater treatment due to its high adsorption and efficiency, self-regeneration quality, low cost and easy synthesis. Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy and UV-visible spectroscopy were used to assess the synthesized nanocomposites' characteristics. From the results, we discovered that polyaniline nanocomposites doped with Nb2O5 and MnO2 nanoparticles had a higher adsorption efficiency (~97.37%) than those found in polyaniline with Cr2O3 and MnO2 (~94.3%). We looked at the adsorption conditions, including the medium's pH, the initial dye concentration, the dosage of the adsorbent, and the adsorption time.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136112791","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}
Deep eutectic solvent (DES) has high viscosity and electrical conductivity values, so it can be used as an electrolyte solvent in dye-sensitized solar cells (DSSCs). This research was conducted to produce DES based on choline chloride (ChCl) and ethylene glycol (EG), diethylene glycol, and polyethylene glycol-400, which were then used as KI/I2 couple redox electrolyte solvent to improve the DSSC performance. The synthesis was carried out by mixing each component in several variations of the mole fraction of ChCl (xCHCl) at 80 °C for 15 min, and then was characterized by their pH, freezing point, density, viscosity, and electrical conductivity. A mixture that meets the criteria as a eutectic solvent and has a freezing point of less than −18 °C with the highest electrical conductivity value is DES ChCl:EG with xChCl 0.3 and xChCl 0.4. Both DESs were then used as a solvent for KI/I2, combined with acetonitrile in various compositions. The electrolyte with the highest electrical conductivity value was KI/I2 dissolved in ChCl:EG with xChCl 0.3 solvent 6:4 v/v, and then employed in DSSC device. The best performance of DSSC (Isc= 0.155 mA/cm2; Voc=0.465 V; Pmax= 0.719 W; ηmax= 0.072%) was produced under a light intensity of 0.1 W/cm2.
{"title":"Deep Eutectic Solvent (DES) Based on Choline Chloride and Mono-, Di-, Poly-Ethylene Glycol as KI/I<sub>2</sub> Electrolyte Solvents on DSSC Devices","authors":"Adhitya Adhitya, Winda Rahmalia, Intan Syahbanu, Gusrizal Gusrizal, Adhitiyawarman Adhitiyawarman","doi":"10.22146/ijc.82754","DOIUrl":"https://doi.org/10.22146/ijc.82754","url":null,"abstract":"Deep eutectic solvent (DES) has high viscosity and electrical conductivity values, so it can be used as an electrolyte solvent in dye-sensitized solar cells (DSSCs). This research was conducted to produce DES based on choline chloride (ChCl) and ethylene glycol (EG), diethylene glycol, and polyethylene glycol-400, which were then used as KI/I2 couple redox electrolyte solvent to improve the DSSC performance. The synthesis was carried out by mixing each component in several variations of the mole fraction of ChCl (xCHCl) at 80 °C for 15 min, and then was characterized by their pH, freezing point, density, viscosity, and electrical conductivity. A mixture that meets the criteria as a eutectic solvent and has a freezing point of less than −18 °C with the highest electrical conductivity value is DES ChCl:EG with xChCl 0.3 and xChCl 0.4. Both DESs were then used as a solvent for KI/I2, combined with acetonitrile in various compositions. The electrolyte with the highest electrical conductivity value was KI/I2 dissolved in ChCl:EG with xChCl 0.3 solvent 6:4 v/v, and then employed in DSSC device. The best performance of DSSC (Isc= 0.155 mA/cm2; Voc=0.465 V; Pmax= 0.719 W; ηmax= 0.072%) was produced under a light intensity of 0.1 W/cm2.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136114311","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}
Dewi Agustiningsih, Nuryono Nuryono, Sri Juari Santosa, Eko Sri Kunarti
SiO2-TiO2@propylamine-Ni(II) as the catalyst for the benzyl alcohol oxidation has been synthesized by utilizing rice husk ash as the SiO2 source. This research was started by extracting SiO2 from rice husk ash and continued by synthesizing the SiO2-TiO2 composite using titanium(IV) tetraisopropoxide (TTIP) as TiO2 precursor and PEG-40 as template. The composite functionalization and metal modification were carried out by adding (3-aminopropyl)triethoxysilane (APTES) as the source of propylamine linker and impregnating NiCl2·6H2O as the nickel precursor, respectively. The catalysts were synthesized by varying the ratios between each component within the material. The prepared materials were then characterized using ATR-IR, XRD, XRF, PSA, SAA, AAS, SEM-EDX, HR-TEM, and TGA. The catalyst activity was investigated by applying it to the oxidation reaction of benzyl alcohol to benzaldehyde with H2O2 as the oxidizing agent under sonication system. The obtained products were then analyzed by using GC-MS to quantify the success of the reaction. All characterizations performed in this research generally indicate the success in the synthesis of SiO2-TiO2@propylamine-Ni(II) materials. Under the same condition including at room temperature, 1 h reaction time, and sonication system, the optimal oxidation reaction of benzyl alcohol was reached when SiO2-TiO2@propylamine-Ni(II)5 was used as the catalyst in 98.52% yield.
{"title":"Propylamine Silica-Titania Hybrid Material Modified with Ni(II) as the Catalyst for Benzyl Alcohol to Benzaldehyde Conversion","authors":"Dewi Agustiningsih, Nuryono Nuryono, Sri Juari Santosa, Eko Sri Kunarti","doi":"10.22146/ijc.84282","DOIUrl":"https://doi.org/10.22146/ijc.84282","url":null,"abstract":"SiO2-TiO2@propylamine-Ni(II) as the catalyst for the benzyl alcohol oxidation has been synthesized by utilizing rice husk ash as the SiO2 source. This research was started by extracting SiO2 from rice husk ash and continued by synthesizing the SiO2-TiO2 composite using titanium(IV) tetraisopropoxide (TTIP) as TiO2 precursor and PEG-40 as template. The composite functionalization and metal modification were carried out by adding (3-aminopropyl)triethoxysilane (APTES) as the source of propylamine linker and impregnating NiCl2·6H2O as the nickel precursor, respectively. The catalysts were synthesized by varying the ratios between each component within the material. The prepared materials were then characterized using ATR-IR, XRD, XRF, PSA, SAA, AAS, SEM-EDX, HR-TEM, and TGA. The catalyst activity was investigated by applying it to the oxidation reaction of benzyl alcohol to benzaldehyde with H2O2 as the oxidizing agent under sonication system. The obtained products were then analyzed by using GC-MS to quantify the success of the reaction. All characterizations performed in this research generally indicate the success in the synthesis of SiO2-TiO2@propylamine-Ni(II) materials. Under the same condition including at room temperature, 1 h reaction time, and sonication system, the optimal oxidation reaction of benzyl alcohol was reached when SiO2-TiO2@propylamine-Ni(II)5 was used as the catalyst in 98.52% yield.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136113085","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}
Hadeel Adil, Hamsa Thamer, Dina Saadi Ahmed, Raghda Alsayed, Muna Bufaroosha, Khalid Zainulabdeen, Hassan Hashim, Alaa Mohammed, Emad Yousif
Three complexes ([CuL2(H2O)2], [NiL2(H2O)2], and [ZnL2Cl2]) have been synthesized through the reaction of metal salts and levofloxacin and characterized by spectrophotometers. The morphology of the complexes was investigated using field emission scanning electron microscopy (FESEM). The physicochemical properties of these complexes were evaluated using the Brunauer-Emmett-Teller (BET) and Barrett-Joyner-Halenda (BJH) techniques. Furthermore, the storage capacity of these complexes was verified using the H-sorb 2600 analyzer at a temperature of 323 K and varying pressure conditions. The obtained data substantiates that the synthesized complexes exhibit favorable attributes for CO2 absorption. The surface area reaches 24.97 m2/g with capacities of 123.073 m3/g and 34.400 m3/g to adsorb CO2. The escalating levels of CO2 in the atmosphere, primarily resulting from the combustion of fossil fuels to meet the surging energy requirements, pose a pressing environmental challenge. Consequently, there has been a surge in research focused on the development of novel materials aimed at facilitating CO2 storage.
{"title":"Synthesis and Characterization of Zn(II), Cu(II), and Ni(II)-Levofloxacin Complexes for Carbon Dioxide Storage Media","authors":"Hadeel Adil, Hamsa Thamer, Dina Saadi Ahmed, Raghda Alsayed, Muna Bufaroosha, Khalid Zainulabdeen, Hassan Hashim, Alaa Mohammed, Emad Yousif","doi":"10.22146/ijc.84552","DOIUrl":"https://doi.org/10.22146/ijc.84552","url":null,"abstract":"Three complexes ([CuL2(H2O)2], [NiL2(H2O)2], and [ZnL2Cl2]) have been synthesized through the reaction of metal salts and levofloxacin and characterized by spectrophotometers. The morphology of the complexes was investigated using field emission scanning electron microscopy (FESEM). The physicochemical properties of these complexes were evaluated using the Brunauer-Emmett-Teller (BET) and Barrett-Joyner-Halenda (BJH) techniques. Furthermore, the storage capacity of these complexes was verified using the H-sorb 2600 analyzer at a temperature of 323 K and varying pressure conditions. The obtained data substantiates that the synthesized complexes exhibit favorable attributes for CO2 absorption. The surface area reaches 24.97 m2/g with capacities of 123.073 m3/g and 34.400 m3/g to adsorb CO2. The escalating levels of CO2 in the atmosphere, primarily resulting from the combustion of fossil fuels to meet the surging energy requirements, pose a pressing environmental challenge. Consequently, there has been a surge in research focused on the development of novel materials aimed at facilitating CO2 storage.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136114341","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}
Norman Yoshi Haryono, Rizqi Layli Khusufi, Delia Wahyu Pangesti, Evi Susanti, Rina Rifqie Mariana, Hartati Eko Wardani, Norazlinaliza Salim
Halal food assurance is becoming more important with the growth of the halal industry globally. Adulteration of halal meat products using non-halal sources such as pork, dog, boar, and even frog meat has become a major problem for moslems. The purpose of this study is to initiate the method for frog meat identification using polymerase chain reaction (PCR) technique. In this study, three primer pairs (Fk1-Rk1, Fk2-Rk2, Fk3-Rk3) were analyzed for their specificity toward frog meat against other common halal meat sources such as beef, chicken, shrimp, squid, and mackerel. The visualization of DNA amplification showed that primer pair Fk1-Rk1 produced primer-dimer, thus cannot be used for this circumstance. Primer pair Fk2-Rk2 showed a better result where DNA amplicon was produced at ~100 bp for frog meat and no amplicons for other meat. Primer pair Fk3-Rk3 showed a different pattern of DNA amplification for all the meat tested, where the amplicon of frog meat was shown at ~100 bp, while the other meat showed multiple amplicons or none. In conclusion, primer pairs Fk2-Rk2 and Fk3-Rk3 showed their potential as primer pairs for frog meat identification using PCR for implementing halal food assurance, although sensitivity analysis needs to be investigated.
{"title":"Primer Pairs Specificity Test for Frog Meat Identification Using PCR Technique","authors":"Norman Yoshi Haryono, Rizqi Layli Khusufi, Delia Wahyu Pangesti, Evi Susanti, Rina Rifqie Mariana, Hartati Eko Wardani, Norazlinaliza Salim","doi":"10.22146/ijc.83626","DOIUrl":"https://doi.org/10.22146/ijc.83626","url":null,"abstract":"Halal food assurance is becoming more important with the growth of the halal industry globally. Adulteration of halal meat products using non-halal sources such as pork, dog, boar, and even frog meat has become a major problem for moslems. The purpose of this study is to initiate the method for frog meat identification using polymerase chain reaction (PCR) technique. In this study, three primer pairs (Fk1-Rk1, Fk2-Rk2, Fk3-Rk3) were analyzed for their specificity toward frog meat against other common halal meat sources such as beef, chicken, shrimp, squid, and mackerel. The visualization of DNA amplification showed that primer pair Fk1-Rk1 produced primer-dimer, thus cannot be used for this circumstance. Primer pair Fk2-Rk2 showed a better result where DNA amplicon was produced at ~100 bp for frog meat and no amplicons for other meat. Primer pair Fk3-Rk3 showed a different pattern of DNA amplification for all the meat tested, where the amplicon of frog meat was shown at ~100 bp, while the other meat showed multiple amplicons or none. In conclusion, primer pairs Fk2-Rk2 and Fk3-Rk3 showed their potential as primer pairs for frog meat identification using PCR for implementing halal food assurance, although sensitivity analysis needs to be investigated.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136114452","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 adsorption of brilliant green onto magnetite-graphene oxide nanoparticles (MGONPs) from an aqueous solution was explored via batch experiments. The adsorption properties of MGONPs were carried out under various experimental conditions related to pH, contact time, adsorbent dose, temperature, and initial adsorbate concentration. The adsorption capacity of MGONPs and optimum pH were 54.57 mg g−1 and 6, respectively. Equilibrium was attained after 30 min, and the adsorption kinetics data best fitted the pseudo-second-order. The Freundlich isotherm best fits the equilibrium. Acetone was able to desorb the dye from the loaded adsorbent. Additionally, the newly developed adsorption attributes effective surface area (eSBET) and dimensionless preferential adsorption (qp) were more accurate than the conventional specific surface area (SBET). The adsorption capacity provides information about the sorbate-sorbent interface (q). The relevance and accuracy of the new parameters for future adsorption system design by correlation analysis were validated. This study confirms the successful modification of MGONPs for the sorption of the cationic dye brilliant green.
{"title":"Performance Assessment: Influence of Sorbate-Sorbent Interphase Using Magnetite Modified Graphene Oxide to Improve Wastewater Treatment","authors":"Olayinka Oluwaseun Oluwasina, Mochamad Zakki Fahmi, Olugbenga Oludayo Oluwasina","doi":"10.22146/ijc.82454","DOIUrl":"https://doi.org/10.22146/ijc.82454","url":null,"abstract":"The adsorption of brilliant green onto magnetite-graphene oxide nanoparticles (MGONPs) from an aqueous solution was explored via batch experiments. The adsorption properties of MGONPs were carried out under various experimental conditions related to pH, contact time, adsorbent dose, temperature, and initial adsorbate concentration. The adsorption capacity of MGONPs and optimum pH were 54.57 mg g−1 and 6, respectively. Equilibrium was attained after 30 min, and the adsorption kinetics data best fitted the pseudo-second-order. The Freundlich isotherm best fits the equilibrium. Acetone was able to desorb the dye from the loaded adsorbent. Additionally, the newly developed adsorption attributes effective surface area (eSBET) and dimensionless preferential adsorption (qp) were more accurate than the conventional specific surface area (SBET). The adsorption capacity provides information about the sorbate-sorbent interface (q). The relevance and accuracy of the new parameters for future adsorption system design by correlation analysis were validated. This study confirms the successful modification of MGONPs for the sorption of the cationic dye brilliant green.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135064192","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}
This research work aims to develop a modified repaglinide-loaded chitosan-ethyl cellulose nanoparticles (RPG-ECSNPs) as a novel sustained-release dosage form with improved mucoadhesive properties using an emulsification solvent-evaporation technique. The RPG-ECSNPs with different particle sizes were prepared from various polymers containing ethyl cellulose (EC) as the internal phase and chitosan (CS) as the external phase, and the use of surfactants, including Tween 80 and poloxamer 188 as emulsifiers. In vitro drug release, drug loading amount, and entrapment efficiency have been influenced by changes in the concentrations of CS and EC. The mean droplet size and zeta potential of RPG-ECSNPs were 213 ± 8.5 nm and 16.4 ± 2.4 mV, respectively. The optimized formulation's entrapment efficiency was 66 ± 2.3%, and drug loading was 7.9 ± 1.65%. The release profile was significantly higher in PBS (90%) than in diluted hydrochloric acid (30%) during 24 h of the study. The mucoadhesive function of the particles was examined in vitro using part of rat intestines. The highest adhesive % was observed for the chitosan-coated NPs. No adhesive properties were noticed for chitosan-free NPs (P-value > 0.05). This indicated that ECSNPs can be successfully utilized for sustained and controlled drug delivery of RPG through the GIT.
{"title":"Improved Mucoadhesive Properties of Repaglinide-Loaded Nanoparticles: Mathematical Modelling through Machine Learning-Based Approach","authors":"Nader Namazi","doi":"10.22146/ijc.82031","DOIUrl":"https://doi.org/10.22146/ijc.82031","url":null,"abstract":"This research work aims to develop a modified repaglinide-loaded chitosan-ethyl cellulose nanoparticles (RPG-ECSNPs) as a novel sustained-release dosage form with improved mucoadhesive properties using an emulsification solvent-evaporation technique. The RPG-ECSNPs with different particle sizes were prepared from various polymers containing ethyl cellulose (EC) as the internal phase and chitosan (CS) as the external phase, and the use of surfactants, including Tween 80 and poloxamer 188 as emulsifiers. In vitro drug release, drug loading amount, and entrapment efficiency have been influenced by changes in the concentrations of CS and EC. The mean droplet size and zeta potential of RPG-ECSNPs were 213 ± 8.5 nm and 16.4 ± 2.4 mV, respectively. The optimized formulation's entrapment efficiency was 66 ± 2.3%, and drug loading was 7.9 ± 1.65%. The release profile was significantly higher in PBS (90%) than in diluted hydrochloric acid (30%) during 24 h of the study. The mucoadhesive function of the particles was examined in vitro using part of rat intestines. The highest adhesive % was observed for the chitosan-coated NPs. No adhesive properties were noticed for chitosan-free NPs (P-value > 0.05). This indicated that ECSNPs can be successfully utilized for sustained and controlled drug delivery of RPG through the GIT.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48649639","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}
D. Harneti, Iqbal Wahyu Mustaqim, Darwati Darwati, Al Arofatus Naini, Purnama Purnama, Erina Hilmayanti, T. Mayanti, N. Nurlelasari, S. Gaffar, R. Maharani, K. Farabi, U. Supratman, S. Fajriah, M. N. Azmi, Y. Shiono
The Aglaia species, which contains triterpenoids, is the most numerous in the Meliaceae family. The A. cucullata species, of which there are only a few known examples, has received scant research attention. This investigation aims to identify triterpenoids in an n-hexane preparation of A. cucullata stem bark and evaluate their effects against the A549 lung cancer cell line. Five dammarane-type triterpenoids were isolated from the A. cucullata trunk bark, which is (1) (20S)-20-hydroxydammar-24-en-3-one, (2) cabraleone, (3) cabralealactone, (4) eichlerianic acid, and (5) (+)-fouquierol. Their chemical structures were determined using infrared, high-resolution mass spectrometry, and nuclear magnetic resonance, as well as through data comparison of the reported compounds. Compound 1 was priorly separated from the Aglaia genus, compounds 2–4 were first isolated from the A. cucullata species, and compound 5 has been reportedly isolated from the Meliaceae family and the Aglaia genus. All substances were tested for their lethal potential against the A549 lung cancer cell type. A seco structure in the A ring of dammarane-type triterpenoid might play an important part in the lethal activity of component 4, which showed the greatest activity with an IC50 value of 32.17 µM against the A549 lung cancer cell line.
{"title":"Triterpenoids from the Stem Bark of Aglaia cucullata (Meliaceae) and Their Cytotoxic Activity against A549 Lung Cancer Cell Line","authors":"D. Harneti, Iqbal Wahyu Mustaqim, Darwati Darwati, Al Arofatus Naini, Purnama Purnama, Erina Hilmayanti, T. Mayanti, N. Nurlelasari, S. Gaffar, R. Maharani, K. Farabi, U. Supratman, S. Fajriah, M. N. Azmi, Y. Shiono","doi":"10.22146/ijc.78748","DOIUrl":"https://doi.org/10.22146/ijc.78748","url":null,"abstract":"The Aglaia species, which contains triterpenoids, is the most numerous in the Meliaceae family. The A. cucullata species, of which there are only a few known examples, has received scant research attention. This investigation aims to identify triterpenoids in an n-hexane preparation of A. cucullata stem bark and evaluate their effects against the A549 lung cancer cell line. Five dammarane-type triterpenoids were isolated from the A. cucullata trunk bark, which is (1) (20S)-20-hydroxydammar-24-en-3-one, (2) cabraleone, (3) cabralealactone, (4) eichlerianic acid, and (5) (+)-fouquierol. Their chemical structures were determined using infrared, high-resolution mass spectrometry, and nuclear magnetic resonance, as well as through data comparison of the reported compounds. Compound 1 was priorly separated from the Aglaia genus, compounds 2–4 were first isolated from the A. cucullata species, and compound 5 has been reportedly isolated from the Meliaceae family and the Aglaia genus. All substances were tested for their lethal potential against the A549 lung cancer cell type. A seco structure in the A ring of dammarane-type triterpenoid might play an important part in the lethal activity of component 4, which showed the greatest activity with an IC50 value of 32.17 µM against the A549 lung cancer cell line.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48699197","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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