Pub Date : 2023-05-24DOI: 10.30598//ijcr.2023.11-muj
D. Ariyani, Nabila Khairiyatul Hilma, U. Utami, U. Santoso, D. R. Mujiyanti
Sasirangan liquid waste contains contaminants that are quite dangerous, characterized by high values of total dissolved solids and dyestuffs. This study aims to determine the effect of dose and pH on chitosan-epichlorohydrin macropore beads. The parameters of the measured waste are total dissolved solids and dyestuffs. The process of absorption of sasirangan liquid waste characterizes by FTIR. The results showed that chitosan-epichlorohydrin beads that interacted with sasirangan liquid waste had optimum results at a chitosan dose of 600 mL/L, with a decrease in the total value of dissolved solid by 2161 mg/L and a decrease in dye by 84.78%. Chitosan-epichlorohydrin beads at pH against total dissolved solid gave optimum results at pH 7 with a reduction in the total dissolved solid value of 2269 mg/L, while pH against dyestuffs gave optimum results at pH 3 with a decrease of 94.09%. The interaction between chitosan and chitosan-epichlorohydrin beads occurred a shift in wave numbers from 943 cm-1 to 932 cm-1 showing the C-O-C group and the chitosan-epichlorohydrin beads spectra with waste at wave numbers 3013-3618 cm-1 to 3007-3631 cm-1 the O-H vibration group overlapped the N-H vibration and showed the result that the beads Chitosan-epichlorohydrin/adsorb sasirangan liquid waste.
{"title":"Study Effect of Chitosan-Epichlorohydrin Macropore Beads on Decreasing the Value of Total Dissolved Solid (TDS) and Dyes in Sasirangan Liquid Waste Treatment","authors":"D. Ariyani, Nabila Khairiyatul Hilma, U. Utami, U. Santoso, D. R. Mujiyanti","doi":"10.30598//ijcr.2023.11-muj","DOIUrl":"https://doi.org/10.30598//ijcr.2023.11-muj","url":null,"abstract":"Sasirangan liquid waste contains contaminants that are quite dangerous, characterized by high values of total dissolved solids and dyestuffs. This study aims to determine the effect of dose and pH on chitosan-epichlorohydrin macropore beads. The parameters of the measured waste are total dissolved solids and dyestuffs. The process of absorption of sasirangan liquid waste characterizes by FTIR. The results showed that chitosan-epichlorohydrin beads that interacted with sasirangan liquid waste had optimum results at a chitosan dose of 600 mL/L, with a decrease in the total value of dissolved solid by 2161 mg/L and a decrease in dye by 84.78%. Chitosan-epichlorohydrin beads at pH against total dissolved solid gave optimum results at pH 7 with a reduction in the total dissolved solid value of 2269 mg/L, while pH against dyestuffs gave optimum results at pH 3 with a decrease of 94.09%. The interaction between chitosan and chitosan-epichlorohydrin beads occurred a shift in wave numbers from 943 cm-1 to 932 cm-1 showing the C-O-C group and the chitosan-epichlorohydrin beads spectra with waste at wave numbers 3013-3618 cm-1 to 3007-3631 cm-1 the O-H vibration group overlapped the N-H vibration and showed the result that the beads Chitosan-epichlorohydrin/adsorb sasirangan liquid waste.","PeriodicalId":13392,"journal":{"name":"Indo. J. Chem. Res.","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81942555","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 : 2023-05-23DOI: 10.30598//ijcr.2023.11-bud
Dwi Budiarto, Bambang Wijianto, H. Ih
Anthocyanins are flavonoid-derived compounds that can reduce blood pressure. This study aims to determine the affinity value of the compound to bind to Angiotensin Converting Enzyme (ACE) and bind to Angiotensin II type 1 Receptor (AT1R) and to determine the distance and shape of the bond that occurs. The results of anthocyanin-derived compounds Delphinidin, Petunidin, Malvidin, Cyanidin, Peonidin, and Pelargonidin have anti-hypertensive potential through the Renin Angiotensin Aldosterone (RAAS) pathway based on molecular docking calculations. The affinity value of each, against Angiotensin Converting Enzyme (ACE) -7.7; -7.8; -7.7; -7.7; -7.8, and -7.7, the best affinity value in anthocyanin-derived compounds is shown in the Malvidin test compound which has three types of hydrogen bonds at a distance of ± 2 Å (ASP377, TYR520, ASP415) and has 1 type of bond that is the same as the lisinopril control (TYR520). While the affinity value to Angiotensin Receptor (AT1R) is -7.7; -7.7; -7.8; -7.7; -7.8, and -7.6, respectively, the best affinity value is shown in the Malvidin test ligand compound of -7.8 kcal/mol which has four types of hydrogen bonds ± 2 Å distance (TYR92, SER105, ARG167, TRP84) and has one kind of bond in common with lisinopril control (TYR520).
{"title":"Study of Anthocyanin Molecule Blocking as Anti-Hypertensive through the Pathway of the Renin-Angiotensin-Aldosterone System (RAAS)","authors":"Dwi Budiarto, Bambang Wijianto, H. Ih","doi":"10.30598//ijcr.2023.11-bud","DOIUrl":"https://doi.org/10.30598//ijcr.2023.11-bud","url":null,"abstract":"Anthocyanins are flavonoid-derived compounds that can reduce blood pressure. This study aims to determine the affinity value of the compound to bind to Angiotensin Converting Enzyme (ACE) and bind to Angiotensin II type 1 Receptor (AT1R) and to determine the distance and shape of the bond that occurs. The results of anthocyanin-derived compounds Delphinidin, Petunidin, Malvidin, Cyanidin, Peonidin, and Pelargonidin have anti-hypertensive potential through the Renin Angiotensin Aldosterone (RAAS) pathway based on molecular docking calculations. The affinity value of each, against Angiotensin Converting Enzyme (ACE) -7.7; -7.8; -7.7; -7.7; -7.8, and -7.7, the best affinity value in anthocyanin-derived compounds is shown in the Malvidin test compound which has three types of hydrogen bonds at a distance of ± 2 Å (ASP377, TYR520, ASP415) and has 1 type of bond that is the same as the lisinopril control (TYR520). While the affinity value to Angiotensin Receptor (AT1R) is -7.7; -7.7; -7.8; -7.7; -7.8, and -7.6, respectively, the best affinity value is shown in the Malvidin test ligand compound of -7.8 kcal/mol which has four types of hydrogen bonds ± 2 Å distance (TYR92, SER105, ARG167, TRP84) and has one kind of bond in common with lisinopril control (TYR520).","PeriodicalId":13392,"journal":{"name":"Indo. J. Chem. Res.","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90109988","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 : 2023-05-23DOI: 10.30598//ijcr.2023.11-mar
S. Sunarti, Abraham Mariwy, Asasa N. Laitupa
This study aims to determine the composition of the oxide, the characteristics of palm shell and coir, and silica gel synthesized. The oxide composition, crystallinity, palm shell and coir ash functional groups were analyzed using XRF, XRD, and FTIR. Analysis of the functional groups and crystallinity using FT-IR and XRD. The results showed the composition of SiO2 in palm shell and coir ash was 76%, and SiO2 in the form of quartz and cristobalite was more dominant than amorphous SiO2. The synthesis success was indicated by the appearance of peaks with low intensity, not sharp, and resembling bumps on the synthesized silica gel diffractogram, which is an amorphous SiO2 characteristic. This result is confirmed by FT-IR, where absorption at wave number 455 cm-1 is a Si-O-Si bending vibration, 783 cm-1 is a stretching vibration of Si-O symmetry of Si-O-Si, 3454.51 cm-1, and 3568 cm-1 with fairly high intensity are characteristic of the -OH group from Si-OH. The wide and sharp absorption at 1083.99 cm-1 is a stretching vibration of the Si-O symmetry of Si-O-Si, 1625.99 cm-1 is -OH vibration of water molecule, 798.53 cm-1 is Si-O stretching vibration of Si-O-Si and absorption of 462.92 cm-1 indicates bending vibration of Si-O-Si.
{"title":"Synthesis and Characterization of Silica Gel from Palm Shell and Coir Ash","authors":"S. Sunarti, Abraham Mariwy, Asasa N. Laitupa","doi":"10.30598//ijcr.2023.11-mar","DOIUrl":"https://doi.org/10.30598//ijcr.2023.11-mar","url":null,"abstract":"This study aims to determine the composition of the oxide, the characteristics of palm shell and coir, and silica gel synthesized. The oxide composition, crystallinity, palm shell and coir ash functional groups were analyzed using XRF, XRD, and FTIR. Analysis of the functional groups and crystallinity using FT-IR and XRD. The results showed the composition of SiO2 in palm shell and coir ash was 76%, and SiO2 in the form of quartz and cristobalite was more dominant than amorphous SiO2. The synthesis success was indicated by the appearance of peaks with low intensity, not sharp, and resembling bumps on the synthesized silica gel diffractogram, which is an amorphous SiO2 characteristic. This result is confirmed by FT-IR, where absorption at wave number 455 cm-1 is a Si-O-Si bending vibration, 783 cm-1 is a stretching vibration of Si-O symmetry of Si-O-Si, 3454.51 cm-1, and 3568 cm-1 with fairly high intensity are characteristic of the -OH group from Si-OH. The wide and sharp absorption at 1083.99 cm-1 is a stretching vibration of the Si-O symmetry of Si-O-Si, 1625.99 cm-1 is -OH vibration of water molecule, 798.53 cm-1 is Si-O stretching vibration of Si-O-Si and absorption of 462.92 cm-1 indicates bending vibration of Si-O-Si.","PeriodicalId":13392,"journal":{"name":"Indo. J. Chem. Res.","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84054506","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 : 2023-05-19DOI: 10.30598//ijcr.2023.11-tau
Nur Taufiq, Sulfiani Sulfiani
Javanese bark (Lannea coromandelica) contains secondary metabolites of saponins, tannins, phenolics, and flavonoids. Flavonoids include aromatic compounds that are antioxidants. Antioxidants can inhibit the oxidation process that arises due to free radical reactions to form unreactive compounds. The active flavonoid compounds in counteracting free radicals are determined by the presence of the –OH (hydroxy) functional group. Flavonoid compounds that have antioxidant properties include catechins, flavones, flavanones, flavonols, chalcones, and isoflavones. This study aims to determine the antioxidant activity of ethanol extract and n-hexane bark of Javan bark (Lannea coromandelica) using the DPPH method. The method used is DPPH using UV-VIS spectrophotometry. Ethanol extract has an IC50 of 3.996 mg/L and has a strong antioxidant activity while the antioxidant activity of N-Hexan is obtained IC50 2193.043 mg/L. has weak antioxidants weak antioxidants.
{"title":"Antioxidant Activity of Ethanol and n-hexane Extracts of Javanese Bark (Lannea coromandelica) Using the DPPH Method","authors":"Nur Taufiq, Sulfiani Sulfiani","doi":"10.30598//ijcr.2023.11-tau","DOIUrl":"https://doi.org/10.30598//ijcr.2023.11-tau","url":null,"abstract":"Javanese bark (Lannea coromandelica) contains secondary metabolites of saponins, tannins, phenolics, and flavonoids. Flavonoids include aromatic compounds that are antioxidants. Antioxidants can inhibit the oxidation process that arises due to free radical reactions to form unreactive compounds. The active flavonoid compounds in counteracting free radicals are determined by the presence of the –OH (hydroxy) functional group. Flavonoid compounds that have antioxidant properties include catechins, flavones, flavanones, flavonols, chalcones, and isoflavones. This study aims to determine the antioxidant activity of ethanol extract and n-hexane bark of Javan bark (Lannea coromandelica) using the DPPH method. The method used is DPPH using UV-VIS spectrophotometry. Ethanol extract has an IC50 of 3.996 mg/L and has a strong antioxidant activity while the antioxidant activity of N-Hexan is obtained IC50 2193.043 mg/L. has weak antioxidants weak antioxidants.","PeriodicalId":13392,"journal":{"name":"Indo. J. Chem. Res.","volume":"244 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76641904","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 : 2023-05-18DOI: 10.30598//ijcr.2023.11-irw
I. R, Muhammad Tasjiddin Teheni, W. Syafriah
The exploitation of plant extract as a reducing agent for synthetic silver nanoparticles has become the main focus of researchers. This study aimed to synthesize silver nanoparticles (AgNPs) from Moringa oleifera leaf stalk extract via bio-reduction. The AgNPs were characterized through ultraviolet-visible absorption spectroscopy (UV-Vis), Fourier transforms infrared spectroscopy (FTIR), and X-ray diffraction (XRD). The research results indicated that an increase in the initial AgNO3 concentration and incubation time had affected the absorption pattern of the surface plasmon resonance (SPR) trend of AgNPs. The results of the functional group analysis revealed the formation of the ketone group (1741 cm-1), which was derived from hydroxyl groups (3415 cm-1). The crystal structure of AgNPs was characterized using XRD. The estimation of the crystal measurement based on the Debye-Scherer equation was 15.59 nm, which was estimated as having a cube crystal form.
{"title":"Synthesis and Characterization of Silver Nanoparticles from the Leaf Stalk Extract of Moringa oleifera","authors":"I. R, Muhammad Tasjiddin Teheni, W. Syafriah","doi":"10.30598//ijcr.2023.11-irw","DOIUrl":"https://doi.org/10.30598//ijcr.2023.11-irw","url":null,"abstract":"The exploitation of plant extract as a reducing agent for synthetic silver nanoparticles has become the main focus of researchers. This study aimed to synthesize silver nanoparticles (AgNPs) from Moringa oleifera leaf stalk extract via bio-reduction. The AgNPs were characterized through ultraviolet-visible absorption spectroscopy (UV-Vis), Fourier transforms infrared spectroscopy (FTIR), and X-ray diffraction (XRD). The research results indicated that an increase in the initial AgNO3 concentration and incubation time had affected the absorption pattern of the surface plasmon resonance (SPR) trend of AgNPs. The results of the functional group analysis revealed the formation of the ketone group (1741 cm-1), which was derived from hydroxyl groups (3415 cm-1). The crystal structure of AgNPs was characterized using XRD. The estimation of the crystal measurement based on the Debye-Scherer equation was 15.59 nm, which was estimated as having a cube crystal form.","PeriodicalId":13392,"journal":{"name":"Indo. J. Chem. Res.","volume":"435 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83627417","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 : 2023-05-15DOI: 10.30598//ijcr.2023.10-agu
Fanny Fajrin Aulia Rosyada, Eva Agustina, Hanik Faizah
Kombucha is a fermented drink that provides health effects. Wuluh starfruit leaves are one of the ingredients that can be used in making kombucha. This study was conducted to determine the effect of fermentation time on the physical, chemical, and antioxidant characteristics of wuluh starfruit leaf kombucha tea (Avverhoa bilimbi Linn.). This research is an experimental study with a completely randomized design (CRD) consisting of 4 treatments. Kombucha wuluh starfruit leaves are made with a fermentation time of 0, 4 8, and 12 days. The physical characteristics tested include an organoleptic test of scent, color, and taste. The chemical characteristics tested include pH, levels of titrated acids (tta), phenolic, and alcohols. The antioxidant activity is known by determining the value of IC50. Organoleptic, pH, tat, and phenolic assessment data were statistically analyzed using Kruskal Wallis and Mann Whitney. Alcohol content and antioxidant activity were analyzed descriptively. The best result of physical, and chemical characteristics and antioxidant activity are on the 12th day of fermentation with a pH of 3, TTA 0.11 0.070%, phenolic 87.33 1.140 mg/ml GAE and alcohol of 0.41% with an IC50 value of 3.65 ppm.
{"title":"The Effect of Fermentation on the Characteristics and Antioxidant Activity of Wuluh Starfruit Leaf Kombucha Tea (Avverhoa bilimbi Linn.)","authors":"Fanny Fajrin Aulia Rosyada, Eva Agustina, Hanik Faizah","doi":"10.30598//ijcr.2023.10-agu","DOIUrl":"https://doi.org/10.30598//ijcr.2023.10-agu","url":null,"abstract":"Kombucha is a fermented drink that provides health effects. Wuluh starfruit leaves are one of the ingredients that can be used in making kombucha. This study was conducted to determine the effect of fermentation time on the physical, chemical, and antioxidant characteristics of wuluh starfruit leaf kombucha tea (Avverhoa bilimbi Linn.). This research is an experimental study with a completely randomized design (CRD) consisting of 4 treatments. Kombucha wuluh starfruit leaves are made with a fermentation time of 0, 4 8, and 12 days. The physical characteristics tested include an organoleptic test of scent, color, and taste. The chemical characteristics tested include pH, levels of titrated acids (tta), phenolic, and alcohols. The antioxidant activity is known by determining the value of IC50. Organoleptic, pH, tat, and phenolic assessment data were statistically analyzed using Kruskal Wallis and Mann Whitney. Alcohol content and antioxidant activity were analyzed descriptively. The best result of physical, and chemical characteristics and antioxidant activity are on the 12th day of fermentation with a pH of 3, TTA 0.11 0.070%, phenolic 87.33 1.140 mg/ml GAE and alcohol of 0.41% with an IC50 value of 3.65 ppm.","PeriodicalId":13392,"journal":{"name":"Indo. J. Chem. Res.","volume":"91 3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89436624","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 : 2023-05-09DOI: 10.30598//ijcr.2023.11-mam
I. Mamedov, Elshad Mamedov, I. Gasimova, Y. Mamedova
The aim of this study was to examine of antibacterial and antifungal activity of 2-amino-3-cyanopyridine derivatives against some microorganisms. The investigated compounds 2, 4, 6 exhibit promising antibacterial and antifungal activities. The high biological activities of the indicated compounds can be probably caused by the simultaneous presence of bromine atoms, nitro and amino groups in the molecules.
{"title":"Synthesis of 2-Amino-3-cyanopyridine Derivatives and Investigation of Their Antibacterial and Antifungal Properties","authors":"I. Mamedov, Elshad Mamedov, I. Gasimova, Y. Mamedova","doi":"10.30598//ijcr.2023.11-mam","DOIUrl":"https://doi.org/10.30598//ijcr.2023.11-mam","url":null,"abstract":"The aim of this study was to examine of antibacterial and antifungal activity of 2-amino-3-cyanopyridine derivatives against some microorganisms. The investigated compounds 2, 4, 6 exhibit promising antibacterial and antifungal activities. The high biological activities of the indicated compounds can be probably caused by the simultaneous presence of bromine atoms, nitro and amino groups in the molecules.","PeriodicalId":13392,"journal":{"name":"Indo. J. Chem. Res.","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90627491","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 : 2023-05-08DOI: 10.30598//ijcr.2023.11-lom
J. Z. Lombok, I. D. K. Anom
Research on compounds from liquid smoke resulting from the pyrolysis of used tire waste has been conducted. The results of tire pyrolysis produce liquid hydrocarbons and charcoal which can be utilized and developed into more useful materials or finished goods. This study aims to identify the compound components of liquid smoke resulting from the pyrolysis of used tire waste. The research begins with manufacturing a pyrolysis tool based on the principle of dry distillation. The pyrolysis process is carried out by heating at high temperatures. Liquid smoke analysis was carried out using GC-MS. In contrast, the components of the compound were identified and characterized by comparing the mass spectrum data obtained with the mass spectrum data in the GC-MS library. The results showed that the pyrolysis of 6 kg of used tires produced 1500 mL of liquid smoke. Analysis of liquid smoke by GC-MS produced 88 chromatogram peaks, with the most dominant peak height at peaks 3, 17, 37, 38, 72, and 73. The most dominant compound component identified by MS spectrum analysis is 2-propanone (peak 3), 4-methyl-2-pentanone (peak 17), ethyl-benzene (peak 37), 1,2-dimethyl-benzene (peak 38), 1-methyl-4-(1-methyl ethyl)-benzene (peak 72) and limonene (peak 73).
{"title":"Characterization and Identification Compounds of Liquid Smoke from Used Tire Waste Pyrolysis","authors":"J. Z. Lombok, I. D. K. Anom","doi":"10.30598//ijcr.2023.11-lom","DOIUrl":"https://doi.org/10.30598//ijcr.2023.11-lom","url":null,"abstract":"Research on compounds from liquid smoke resulting from the pyrolysis of used tire waste has been conducted. The results of tire pyrolysis produce liquid hydrocarbons and charcoal which can be utilized and developed into more useful materials or finished goods. This study aims to identify the compound components of liquid smoke resulting from the pyrolysis of used tire waste. The research begins with manufacturing a pyrolysis tool based on the principle of dry distillation. The pyrolysis process is carried out by heating at high temperatures. Liquid smoke analysis was carried out using GC-MS. In contrast, the components of the compound were identified and characterized by comparing the mass spectrum data obtained with the mass spectrum data in the GC-MS library. The results showed that the pyrolysis of 6 kg of used tires produced 1500 mL of liquid smoke. Analysis of liquid smoke by GC-MS produced 88 chromatogram peaks, with the most dominant peak height at peaks 3, 17, 37, 38, 72, and 73. The most dominant compound component identified by MS spectrum analysis is 2-propanone (peak 3), 4-methyl-2-pentanone (peak 17), ethyl-benzene (peak 37), 1,2-dimethyl-benzene (peak 38), 1-methyl-4-(1-methyl ethyl)-benzene (peak 72) and limonene (peak 73).","PeriodicalId":13392,"journal":{"name":"Indo. J. Chem. Res.","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85163967","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 : 2023-04-20DOI: 10.30598//ijcr.2023.11-tah
C. Tahya, M. Cornelia, T. M. Siregar, Karnelasatri Karnelasatri
Indigo Carmine (IC) is a synthetic dye that might promote irritations, vomiting, and diarrhea when orally consumed in high concentrations. Copper is a dangerous heavy metal that tends to accumulate in organisms' cells as a pollutant. Hyperproduction of IC and accumulation of copper in water could cause an environmental problem that must be adequately addressed. Kaolin is found abundant on Bangka Island. Based on XRD analysis, Kaolin Island from Bangka Island consists of two important minerals, Kaolinite and Rectorite. Kaolin has chemical and physical properties, which make it useful in several applications, including as an adsorbent. This study aims to evaluate how Kaolin can adsorb copper ion from acid wastewater (pH < 0.5) and determine natural Kaolin's ability to adsorb IC dye from an aqueous solution. Many factors, including mixing time and number of doses of Kaolin, influence Kaolin's ability to absorb IC. The longer the stirring time, the more IC is absorbed. The optimal temperature for IC adsorption is 25˚C. The optimal kaolin dose for IC adsorption is 20% (m/v). Copper concentration after application of Kaolin tends to decrease, with optimal at 25.09% (m/v) dosage for 19.23% copper removal.
{"title":"Adsorption of Indigo Carmine Dye and Copper Ion by Kaolin from Bangka Island","authors":"C. Tahya, M. Cornelia, T. M. Siregar, Karnelasatri Karnelasatri","doi":"10.30598//ijcr.2023.11-tah","DOIUrl":"https://doi.org/10.30598//ijcr.2023.11-tah","url":null,"abstract":"Indigo Carmine (IC) is a synthetic dye that might promote irritations, vomiting, and diarrhea when orally consumed in high concentrations. Copper is a dangerous heavy metal that tends to accumulate in organisms' cells as a pollutant. Hyperproduction of IC and accumulation of copper in water could cause an environmental problem that must be adequately addressed. Kaolin is found abundant on Bangka Island. Based on XRD analysis, Kaolin Island from Bangka Island consists of two important minerals, Kaolinite and Rectorite. Kaolin has chemical and physical properties, which make it useful in several applications, including as an adsorbent. This study aims to evaluate how Kaolin can adsorb copper ion from acid wastewater (pH < 0.5) and determine natural Kaolin's ability to adsorb IC dye from an aqueous solution. Many factors, including mixing time and number of doses of Kaolin, influence Kaolin's ability to absorb IC. The longer the stirring time, the more IC is absorbed. The optimal temperature for IC adsorption is 25˚C. The optimal kaolin dose for IC adsorption is 20% (m/v). Copper concentration after application of Kaolin tends to decrease, with optimal at 25.09% (m/v) dosage for 19.23% copper removal.","PeriodicalId":13392,"journal":{"name":"Indo. J. Chem. Res.","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87169109","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 : 2023-04-18DOI: 10.30598//ijcr.2023.11-riy
Baiq Amelia Riyandari, Multazam Multazam
This research aims to study the antioxidant activity of chitosan-alginate films by adding Moringa oleifera leaf extract. These films will be applied as active packaging for food. This research was initiated by the extraction of Moringa oleifera leaves. The Moringa oleifera leaves extract was prepared maceration and soxhletation techniques using distilled water as a solvent. The maceration method is resulting the yield 6.97%, while the yield of extract from the soxhletation method was 8.57%. After the extraction process, screening phytochemicals of Moringa oleifera leaves extract was tested to identify secondary metabolite compounds. Screening phytochemicals of the extract showed that Moringa oleifera extract contains alkaloids, flavonoids, tannins, and saponins. Synthesizing of films was conducted at room temperature through a homogenization technique using a hot plate stirrer. The variations of final concentrations of extract were 0% (film A0), 0.50% (film A1), 0.75% (film A2), and 1.00% (film A3). Based on the antioxidant activity test using DPPH, the % RSA value of films with the addition of extract from soxhletation method was higher than films with the addition of extract from the maceration technique. The highest percentage of RSA value was 43.65% from A3 film with the extract's final concentration of 1.00%.
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