Pub Date : 2019-01-01DOI: 10.5220/0008920102490252
B. Cahyady, Suharman, M. Taufik, Fitri H Hasibuan
Sinabung erupts will emit hot clouds. Flowing lava will bring considerable heat. Negative Impact after the eruption of this mount is the exposure of cauliflower plants around the eruption site by Arsenic. This study aims to determine of Arsenic from various types of cabbage (white, purple, green) exposed to the Sinabung area after eruption using the Atomic Absorption Spectrophotometry (AAS) method. The sample used is stem from white, purple, and green cabbage. Preparation of green cabbage samples in analytical laboratory Universitas Sumatera Utara. Sampling uses simple random sampling technique. Process of destruction have been developed and analysis using the Atomic Absorption Spectrophotometry (AAS) method used standard solution at 0.05, 0.10. 0.150. 0.20. and 0.250 μg / mL. The wavelength used is 193.7 nm. The results of the analysis showed that the amount of Arsenic contained in white, purple and green cabbage stems was 0.0072, 0.0043, and 0.0082 μg / mL respectively.
{"title":"The AAS Method for Arsen Analysis in Cabbage in the Area of Sinabung Post Eruption","authors":"B. Cahyady, Suharman, M. Taufik, Fitri H Hasibuan","doi":"10.5220/0008920102490252","DOIUrl":"https://doi.org/10.5220/0008920102490252","url":null,"abstract":"Sinabung erupts will emit hot clouds. Flowing lava will bring considerable heat. Negative Impact after the eruption of this mount is the exposure of cauliflower plants around the eruption site by Arsenic. This study aims to determine of Arsenic from various types of cabbage (white, purple, green) exposed to the Sinabung area after eruption using the Atomic Absorption Spectrophotometry (AAS) method. The sample used is stem from white, purple, and green cabbage. Preparation of green cabbage samples in analytical laboratory Universitas Sumatera Utara. Sampling uses simple random sampling technique. Process of destruction have been developed and analysis using the Atomic Absorption Spectrophotometry (AAS) method used standard solution at 0.05, 0.10. 0.150. 0.20. and 0.250 μg / mL. The wavelength used is 193.7 nm. The results of the analysis showed that the amount of Arsenic contained in white, purple and green cabbage stems was 0.0072, 0.0043, and 0.0082 μg / mL respectively.","PeriodicalId":20533,"journal":{"name":"Proceedings of the 1st International Conference on Chemical Science and Technology Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89731497","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 : 2019-01-01DOI: 10.5220/0008838600260029
R. Siburian, H. Sihotang, S. L. Raja, M. Supeno, C. Simanjuntak, Hana Manurung
: An experimental research is being conducted on the joining of dissimilar materials of grey cast iron to low carbon steel utilizing diffusion bonding method. Diffusion bonding process operates on the principle of solid-state diffusion, wherein the atoms of two solid, metallic surfaces intersperse themselves over time, moving an atomic mass form or diffusion through the lattice of a crystalline solid. Upon producing of the diffusion couples through diffusion bonding, the bonds are subjected to SEM (Scanning Electron Microscopy), EPMA (Electron Probe Micro Analyzer), XRD (X-Ray Diffraction), EDS/EDX (Energy Dispersive X-Ray Spectroscopy), WDX’s (Wavelength-dispersive X-ray spectroscopy) micro-structural analysis and mechanical properties examination. Subsequent investigation is to be carried out to establish the diffusion mechanism, inter-diffusion coefficients and activation energy of the diffusion system. To study the optimum conditions that produce excellent and ultimate bond, various bonding parameters and variables are taken into consideration. This paper describes the research progress undertaken to date, explaining the materials involved, equipment, method and preliminary as well as current results on microstructure analysis, tensile test and micro-hardness test.
{"title":"Nanometers Formation Model of Iron (Fe) and Magnesium (Mg) on Graphene Nano Sheets","authors":"R. Siburian, H. Sihotang, S. L. Raja, M. Supeno, C. Simanjuntak, Hana Manurung","doi":"10.5220/0008838600260029","DOIUrl":"https://doi.org/10.5220/0008838600260029","url":null,"abstract":": An experimental research is being conducted on the joining of dissimilar materials of grey cast iron to low carbon steel utilizing diffusion bonding method. Diffusion bonding process operates on the principle of solid-state diffusion, wherein the atoms of two solid, metallic surfaces intersperse themselves over time, moving an atomic mass form or diffusion through the lattice of a crystalline solid. Upon producing of the diffusion couples through diffusion bonding, the bonds are subjected to SEM (Scanning Electron Microscopy), EPMA (Electron Probe Micro Analyzer), XRD (X-Ray Diffraction), EDS/EDX (Energy Dispersive X-Ray Spectroscopy), WDX’s (Wavelength-dispersive X-ray spectroscopy) micro-structural analysis and mechanical properties examination. Subsequent investigation is to be carried out to establish the diffusion mechanism, inter-diffusion coefficients and activation energy of the diffusion system. To study the optimum conditions that produce excellent and ultimate bond, various bonding parameters and variables are taken into consideration. This paper describes the research progress undertaken to date, explaining the materials involved, equipment, method and preliminary as well as current results on microstructure analysis, tensile test and micro-hardness test.","PeriodicalId":20533,"journal":{"name":"Proceedings of the 1st International Conference on Chemical Science and Technology Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78992890","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 : 2019-01-01DOI: 10.5220/0008836400050009
E. M. Brahmana, J. Kaban, G. Haro, J. Tarigan, B. Wirjosentono, Tamrin, M. Ginting
Halogen substituted analog compound chalcone (E)-1-(3-bromophenyl)-3-p-tolylprop-2-en-1-on was synthesized from 4-metylbenzaldehyde as aldehydes with 3bromoacetophenone, as ketones by using aldol condensation reaction. The compound resulted rendement with value of 62,38% and characterized by using UV, IR, MS, and 1HNMR. Test of antioxidant activity using DPPH method showed that those compounds have low potency as antioxidant agent LC50 with value 571, 7903 ppm. Toxicity tests using Brine Shrimp Lethality Test (BSLT) showed that those compounds have a potency as anticancer agent with LC50 value
{"title":"Synthesis, Antioxidant and Toxicity Activity of Compounds (E)-1-(3-bromophenyl)-3-p tolylprop-2-en-1-on","authors":"E. M. Brahmana, J. Kaban, G. Haro, J. Tarigan, B. Wirjosentono, Tamrin, M. Ginting","doi":"10.5220/0008836400050009","DOIUrl":"https://doi.org/10.5220/0008836400050009","url":null,"abstract":"Halogen substituted analog compound chalcone (E)-1-(3-bromophenyl)-3-p-tolylprop-2-en-1-on was synthesized from 4-metylbenzaldehyde as aldehydes with 3bromoacetophenone, as ketones by using aldol condensation reaction. The compound resulted rendement with value of 62,38% and characterized by using UV, IR, MS, and 1HNMR. Test of antioxidant activity using DPPH method showed that those compounds have low potency as antioxidant agent LC50 with value 571, 7903 ppm. Toxicity tests using Brine Shrimp Lethality Test (BSLT) showed that those compounds have a potency as anticancer agent with LC50 value","PeriodicalId":20533,"journal":{"name":"Proceedings of the 1st International Conference on Chemical Science and Technology Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77677042","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 : 2019-01-01DOI: 10.5220/0008921802800286
Fitri Purnama Sari, H. Agusnar, M. Taufik
Preparation and characterization of chitosan with activated carbon have been made with the aim of reducing the metal content of Cadmium (Cd) and Nickel (Ni) in standard solutions. Characterization chitosan with activated carbon by FT-IR, SEM, and test adsorption by using AAS. Characterization of chitosan and chitosan activated carbon by FT-IR shows that there is no difference in wavelength: as for the emerging groups, NH groups (3448.72 cm), CH groups (2924.09 cm), C = C groups (1635.64 cm), C-N group (1381 cm), and NH group (3441.01 cm). SEM characterization on chitosan activated carbon shows a rude surface. Absorptions of Cd and Ni in chitosan that best with addition carbon of 0.6 g that is 74.54%
{"title":"Preparation and Characterization of Chitosan with Activated Carbon as Adsorbent to Reduce Level Metal Cadmium (Cd) and Nickel (Ni)","authors":"Fitri Purnama Sari, H. Agusnar, M. Taufik","doi":"10.5220/0008921802800286","DOIUrl":"https://doi.org/10.5220/0008921802800286","url":null,"abstract":"Preparation and characterization of chitosan with activated carbon have been made with the aim of reducing the metal content of Cadmium (Cd) and Nickel (Ni) in standard solutions. Characterization chitosan with activated carbon by FT-IR, SEM, and test adsorption by using AAS. Characterization of chitosan and chitosan activated carbon by FT-IR shows that there is no difference in wavelength: as for the emerging groups, NH groups (3448.72 cm), CH groups (2924.09 cm), C = C groups (1635.64 cm), C-N group (1381 cm), and NH group (3441.01 cm). SEM characterization on chitosan activated carbon shows a rude surface. Absorptions of Cd and Ni in chitosan that best with addition carbon of 0.6 g that is 74.54%","PeriodicalId":20533,"journal":{"name":"Proceedings of the 1st International Conference on Chemical Science and Technology Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88973894","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 : 2019-01-01DOI: 10.5220/0008919802340238
H. Br Sembiring, Yuni Romasni Purba
Isolation and characterization of an antioxidant compound from kayu hitam leaves (Diospyros celebica Bakh.F.) had been done by extraction and column chromatography method. Kayu hitam leaves powder was extracted with methanol and methanol extract reextracted with aquadest. Aqudest extract was partitioned with ethyl acetate and ethyl acetate extract repartitioned with n-hexane. The residues which are phenolic compounds were separated by column chromatography (SiO2, chloroform: methanol 90:10, 80:20, 70: 30,60: 40). The isolate obtained was purified with a preparative thin layer chromatography and obtained 9.5 mg of pure isolate in the form of yellow solid. characterization of pure isolate was determined by UV-Vis, FT-IR and 1H-NMR spectroscopic analysis. Based on the analysis carried out it can be characterized that the pure isolate obtained is methyl gallate. The antioxidant activity of methyl gallate was determined based on the DPPH free radical scavenging method. The activity of the methyl gallate was classified as strong with IC50 value of 4.41 μg / mL.
{"title":"Isolation and Characterization of an Antioxidant Compound from Kayu Hitam Leaves (Diospyros celebica Bakh.F.)","authors":"H. Br Sembiring, Yuni Romasni Purba","doi":"10.5220/0008919802340238","DOIUrl":"https://doi.org/10.5220/0008919802340238","url":null,"abstract":"Isolation and characterization of an antioxidant compound from kayu hitam leaves (Diospyros celebica Bakh.F.) had been done by extraction and column chromatography method. Kayu hitam leaves powder was extracted with methanol and methanol extract reextracted with aquadest. Aqudest extract was partitioned with ethyl acetate and ethyl acetate extract repartitioned with n-hexane. The residues which are phenolic compounds were separated by column chromatography (SiO2, chloroform: methanol 90:10, 80:20, 70: 30,60: 40). The isolate obtained was purified with a preparative thin layer chromatography and obtained 9.5 mg of pure isolate in the form of yellow solid. characterization of pure isolate was determined by UV-Vis, FT-IR and 1H-NMR spectroscopic analysis. Based on the analysis carried out it can be characterized that the pure isolate obtained is methyl gallate. The antioxidant activity of methyl gallate was determined based on the DPPH free radical scavenging method. The activity of the methyl gallate was classified as strong with IC50 value of 4.41 μg / mL.","PeriodicalId":20533,"journal":{"name":"Proceedings of the 1st International Conference on Chemical Science and Technology Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76540157","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 : 2019-01-01DOI: 10.5220/0008920202530256
R. Hidayati, M. Taufik, Z. Alfian, S. Lenny, Chintya Cahaya, Simon Sidabuke, E. Manullang
: Eucalyptus plants are one type of essential oil that is fast growing and is also known as a plant that can survive in the dry season and has a deep root system. This essential oil is widely used in various fields, such as for pharmaceuticals, cosmetics and the food industry both as antioxidants and antibacterial. This study aims to identification of potential antioxidants and the main active compounds from leaves of Eucalyptus grandis PT. Toba Pulp Lestari, Tbk. Extraction was carried out using solvents, methanol, ethanol and dichloromethane. The antioxidant potential test was determined by the DPPH method (1,1 diphenyl picrylhydrazyl). The variation of sample volume 20; 30; 40; 50; 60 μL. Antioxidant activity with IC50 Eucalyptus grandis leaf extract was 5,349 μg / mL. Eucalyptus leaf extract is categorized as providing weak antioxidant activity. The main active compound found is Sineol. The peak area was observed at 52% at retention time 13.605. The other compounds obtained in this leaf were α pinene, β pinene, 1,3,7-Octatriene, 3-Ethylpentane, Paracymene, and terpinene.
桉树是一种生长迅速的精油，也被认为是一种可以在干旱季节生存的植物，它有一个很深的根系。这种精油被广泛应用于各个领域，如制药、化妆品和食品工业，作为抗氧化剂和抗菌剂。本研究旨在鉴定巨桉(Eucalyptus grandis PT. Toba Pulp Lestari, Tbk)叶中潜在的抗氧化剂和主要活性物质。提取溶剂为甲醇、乙醇和二氯甲烷。采用DPPH法(1,1二苯基苦味酰肼)测定其抗氧化电位。样本量的变化量为20;30;40;50;60μL。大桉叶提取物的IC50抗氧化活性为5349 μg / mL，属于抗氧化活性较弱的桉叶提取物。所发现的主要活性化合物是sinol。保留时间为13.605时，峰面积为52%。从该叶中得到的其他化合物有α蒎烯、β蒎烯、1,3,7-辛三烯、3-乙基戊烷、对丙烯和萜烯。
{"title":"Identification of Potential Antioxidants from Leaves of Eucalyptus grandis PT Toba Pulp Lestari, Tbk.","authors":"R. Hidayati, M. Taufik, Z. Alfian, S. Lenny, Chintya Cahaya, Simon Sidabuke, E. Manullang","doi":"10.5220/0008920202530256","DOIUrl":"https://doi.org/10.5220/0008920202530256","url":null,"abstract":": Eucalyptus plants are one type of essential oil that is fast growing and is also known as a plant that can survive in the dry season and has a deep root system. This essential oil is widely used in various fields, such as for pharmaceuticals, cosmetics and the food industry both as antioxidants and antibacterial. This study aims to identification of potential antioxidants and the main active compounds from leaves of Eucalyptus grandis PT. Toba Pulp Lestari, Tbk. Extraction was carried out using solvents, methanol, ethanol and dichloromethane. The antioxidant potential test was determined by the DPPH method (1,1 diphenyl picrylhydrazyl). The variation of sample volume 20; 30; 40; 50; 60 μL. Antioxidant activity with IC50 Eucalyptus grandis leaf extract was 5,349 μg / mL. Eucalyptus leaf extract is categorized as providing weak antioxidant activity. The main active compound found is Sineol. The peak area was observed at 52% at retention time 13.605. The other compounds obtained in this leaf were α pinene, β pinene, 1,3,7-Octatriene, 3-Ethylpentane, Paracymene, and terpinene.","PeriodicalId":20533,"journal":{"name":"Proceedings of the 1st International Conference on Chemical Science and Technology Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79702839","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 : 2019-01-01DOI: 10.5220/0008864701780181
Khatarina Meldawati Pasaribu, S. Gea, S. Ilyas, Tamrin
It is recognized that bacterial cellulose (BC) is used as a scaffold for tissue engineering. However, pristine BC is not ideal enough to be applied as a scaffold because bacterial cellulose does not have antimicrobial activity. The aim of this study was to evaluate the antmicrobial activity of bacterial cellulose and their composites. BC gel, produced by Acetobacter xylinum with HS medium as a carbohydrate resources, was immersed into chitosan (Ch) and collagen (Co) by ex-situ approach to produce BC/Ch/Col. The same procedures were repeated for BC/Ch, BC/Col, and BC/Col/Ch. The effectiveness of antimicrobial activity was carried out using disk paper to inhibit the growth of pathogen bacteria such as Escherichia coli and Staphylococcus aureus. The results showed that BC/Ch has the highest antimicrobial activity against E. coli and S. aureus with the inhibition zone of 10.15 mm and 7.9 mm, respectively.
{"title":"The Effectiveness of Chitosan as an Antimicrobial on Bacterial Cellulose-based Scaffold Skin Tissue Engineering","authors":"Khatarina Meldawati Pasaribu, S. Gea, S. Ilyas, Tamrin","doi":"10.5220/0008864701780181","DOIUrl":"https://doi.org/10.5220/0008864701780181","url":null,"abstract":"It is recognized that bacterial cellulose (BC) is used as a scaffold for tissue engineering. However, pristine BC is not ideal enough to be applied as a scaffold because bacterial cellulose does not have antimicrobial activity. The aim of this study was to evaluate the antmicrobial activity of bacterial cellulose and their composites. BC gel, produced by Acetobacter xylinum with HS medium as a carbohydrate resources, was immersed into chitosan (Ch) and collagen (Co) by ex-situ approach to produce BC/Ch/Col. The same procedures were repeated for BC/Ch, BC/Col, and BC/Col/Ch. The effectiveness of antimicrobial activity was carried out using disk paper to inhibit the growth of pathogen bacteria such as Escherichia coli and Staphylococcus aureus. The results showed that BC/Ch has the highest antimicrobial activity against E. coli and S. aureus with the inhibition zone of 10.15 mm and 7.9 mm, respectively.","PeriodicalId":20533,"journal":{"name":"Proceedings of the 1st International Conference on Chemical Science and Technology Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73908781","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 : 2019-01-01DOI: 10.5220/0008855100890095
Mayang Sari, Tamrin, J. Kaban, Z. Alfian
The search for active ingredients from plants that are secondary metabolites as a defense compound from plants has been carried out. This study was conducted to investigate the phytochemical constituents of Musa paradisiaca Linn’s pseudo-stem, such as alkaloids, flavonoids, steroids, terpenoids, and saponins. In this study, we estimated the content of terpenoids and saponins and determined the activity of 1,1-diphenyl-2picrylhydrazyl (DPPH) scavenging. Ethanol extract of Musa paradisiaca Linn’s pseudo-stem, active as an antioxidant (IC 50 = 494.2) with a comparison of Ascorbic acid. Chemical constituents of ethanol extract of Musa paradisiaca Linn’s pseudo-stem are characterized by GC-MS, which shows that they contain triterpenoid organic compounds, such as: Corticosterone, Stigmasterol, Obtusifoliol, Lupeol, and 9Cyclolanost-24-en-3-ol
{"title":"Bioactivity and Phytochemical Constituents of Extract Etanol from Musa paradisiaca Linn","authors":"Mayang Sari, Tamrin, J. Kaban, Z. Alfian","doi":"10.5220/0008855100890095","DOIUrl":"https://doi.org/10.5220/0008855100890095","url":null,"abstract":"The search for active ingredients from plants that are secondary metabolites as a defense compound from plants has been carried out. This study was conducted to investigate the phytochemical constituents of Musa paradisiaca Linn’s pseudo-stem, such as alkaloids, flavonoids, steroids, terpenoids, and saponins. In this study, we estimated the content of terpenoids and saponins and determined the activity of 1,1-diphenyl-2picrylhydrazyl (DPPH) scavenging. Ethanol extract of Musa paradisiaca Linn’s pseudo-stem, active as an antioxidant (IC 50 = 494.2) with a comparison of Ascorbic acid. Chemical constituents of ethanol extract of Musa paradisiaca Linn’s pseudo-stem are characterized by GC-MS, which shows that they contain triterpenoid organic compounds, such as: Corticosterone, Stigmasterol, Obtusifoliol, Lupeol, and 9Cyclolanost-24-en-3-ol","PeriodicalId":20533,"journal":{"name":"Proceedings of the 1st International Conference on Chemical Science and Technology Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77833789","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 : 2019-01-01DOI: 10.5220/0008868501910196
G. Saragih, Tamrin, Marpongahtun, D. Nasution
: Mangroves are plants that function as protectors of the land from ocean waves. Mangroves are a source of starch that has not been explored. To expand the application, the starch needs to be modified. Natural starch is made using wet extraction. Natural starch is synthesized into nanoparticle starch by chemical-mechanical methods. Modified Mangrove Fruit Starch can be used as a base for making hydrogels. Characterization of starch and starch nanoparticles includes proxy analysis, functional groups using the Fourier Transform Infrared Spectroscopy (FTIR). Test the PSA (Partiicle size analyzer) to find out the particle size. Crystallinity test of starch nanoparticles using X-Ray Diffraction (XRD). The morphological analysis of nanoparticles was carried out using the Scanning Electron Microscopy (SEM) instrument. Thermal test using Differential scanning calorimeter (DSC). The results showed that mangrove starch had a yield of 29.60% and particle size of mangrove nanoparticles of 38.79 nm. cyclic or aromatic ring and in the absorption area of 1050 - 1300 cm -1 This vibration shows the vibration of the stretching region of hydrogen with the C-O bond). The results of FTIR spectroscopic analysis showed that the mangrove starch provides a spectrum that describes the structure of starch.
{"title":"Modification and Characterization Starch Nanoparticles of Mangrove Fruit using Chemical-mechanical Method and Application as Basic Materials Making Hydrogel","authors":"G. Saragih, Tamrin, Marpongahtun, D. Nasution","doi":"10.5220/0008868501910196","DOIUrl":"https://doi.org/10.5220/0008868501910196","url":null,"abstract":": Mangroves are plants that function as protectors of the land from ocean waves. Mangroves are a source of starch that has not been explored. To expand the application, the starch needs to be modified. Natural starch is made using wet extraction. Natural starch is synthesized into nanoparticle starch by chemical-mechanical methods. Modified Mangrove Fruit Starch can be used as a base for making hydrogels. Characterization of starch and starch nanoparticles includes proxy analysis, functional groups using the Fourier Transform Infrared Spectroscopy (FTIR). Test the PSA (Partiicle size analyzer) to find out the particle size. Crystallinity test of starch nanoparticles using X-Ray Diffraction (XRD). The morphological analysis of nanoparticles was carried out using the Scanning Electron Microscopy (SEM) instrument. Thermal test using Differential scanning calorimeter (DSC). The results showed that mangrove starch had a yield of 29.60% and particle size of mangrove nanoparticles of 38.79 nm. cyclic or aromatic ring and in the absorption area of 1050 - 1300 cm -1 This vibration shows the vibration of the stretching region of hydrogen with the C-O bond). The results of FTIR spectroscopic analysis showed that the mangrove starch provides a spectrum that describes the structure of starch.","PeriodicalId":20533,"journal":{"name":"Proceedings of the 1st International Conference on Chemical Science and Technology Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87248363","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 : 2019-01-01DOI: 10.5220/0008857101160120
D. Nasution, Marpongahtun, D. I. Muthawali, A. Budiman, Zulfikar
Superabsorbent polymer is a polymeric material that able to absorb a large amount of water. The purpose of this study is to synthesize and measure water absorption capacity and study the crosslinking process of superabsorbent-aluminum-breadfruit starch (Al-CMC-BS). The preparation of Al-CMC-BS was done in two steps. The first step was reacting CMC with aluminum sulfate so that the aluminum-carboxymethyl cellulose (Al-CMC) film was produced and then mashed into powder. Al-CMC powder was dissolved in water and reacted with BS solution to obtain Al-CMC-BS. Furthermore, Al-CMC-BS produced was determined their water absorption capacity, morphology with SEM, functional group with FTIR and transition glass temperature with DSC. The results showed that the absorption capacity of water from AlCMC-BS reached 2,444.44 %. SEM analysis shows the formation of a more homogeneous Al-CMC-BS mixture than before mixing. The FTIR spectrum shows the formation of crosslink between Al-CMC and BS. DSC analysis shows that there is one Tg value of Al-CMC-BS that is on 95.85 ̊C, which is in between Tg of BS on 118.72 ̊C and Tg of CMC on 94.23 ̊C. This shows that the mixture of Al, CMC and BS is
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