Pub Date : 2019-01-01DOI: 10.5220/0008878902180222
C. F. Zuhra, M. Ginting, D. S. Siregar
: Synthesis of cross-linked starch has been successfully carried out by crosslinking reaction between breadfruit starch ( Artocarpus communis ) and epichlorohydrin with variation of epichlorohydrin 1%; 2%; and 3 %. The result of cross-linked starch was characterized by FT-IR spectrophotometer and the degree of Substitution (DS). The formation of cross-linked starch was confirmed by FT-IR spectra data with the appearance of stretching vibrational of C-O-C at 1018.41-1242.16 cm -1 . The value of DS for variations of epichlorohydrin 1%; 2%; 3% are 0.0552; 0.0701; 0.0613, respectively. The cross-linked starch with variation 2% of epichlorohydrin has the highest DS and then it was characterized using SEM and determined the swelling degree. The results of the swelling degree test with a variation of absorption time of 6 hours, 24 hours, 36 hours, 72 hours were 0.9925%, 1.4611%, 1.8054%, 2.0049%, 3.0124%, respectively.
以面包果淀粉(Artocarpus communis)与环氧氯丙烷为原料，在环氧氯丙烷含量变化1%的条件下，成功地合成了交联淀粉;2%;还有3%。用红外光谱法和取代度(DS)对交联淀粉的产物进行了表征。在1018.41 ~ 1242.16 cm -1处出现C-O-C的拉伸振动，证实了交联淀粉的形成。环氧氯丙烷浓度变化1%时的DS值;2%;3%为0.0552;0.0701;0.0613,分别。环氧氯丙烷含量变化2%的交联淀粉DS最高，用扫描电镜对其进行了表征，并测定了膨胀度。吸收时间为6小时、24小时、36小时、72小时的溶胀度试验结果分别为0.9925%、1.4611%、1.8054%、2.0049%、3.0124%。
{"title":"Synthesis of Cross-linked Breadfruit Starch (Artocarpus communis) using Epichlorohydrin","authors":"C. F. Zuhra, M. Ginting, D. S. Siregar","doi":"10.5220/0008878902180222","DOIUrl":"https://doi.org/10.5220/0008878902180222","url":null,"abstract":": Synthesis of cross-linked starch has been successfully carried out by crosslinking reaction between breadfruit starch ( Artocarpus communis ) and epichlorohydrin with variation of epichlorohydrin 1%; 2%; and 3 %. The result of cross-linked starch was characterized by FT-IR spectrophotometer and the degree of Substitution (DS). The formation of cross-linked starch was confirmed by FT-IR spectra data with the appearance of stretching vibrational of C-O-C at 1018.41-1242.16 cm -1 . The value of DS for variations of epichlorohydrin 1%; 2%; 3% are 0.0552; 0.0701; 0.0613, respectively. The cross-linked starch with variation 2% of epichlorohydrin has the highest DS and then it was characterized using SEM and determined the swelling degree. The results of the swelling degree test with a variation of absorption time of 6 hours, 24 hours, 36 hours, 72 hours were 0.9925%, 1.4611%, 1.8054%, 2.0049%, 3.0124%, 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":"78148157","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: 10.5220/0008925902930296
.. Marpongahtun, Darwin Yunus Nasution, Taufik Hidayat
: Preparation of porous ceramics based on polyvinyl alcohol and clay has been carried out by using oil palm wood powder as a pore forming agent. Porous ceramics are made with a composition: 80% clay, 15% PVA and 5% oil palm wood powder. The size of the particles of palm oil wood powder is varied, namely 100, 150 and 200 mesh. The sintering process is carried out at a temperature of 1000 °C with a holding time of 2 hours. The chemical composition of clay is determined by EDX analysis. The porous ceramics produced were tested for porosity and hardness. The result shows that the particle size of oil palm wood powder is very influential on the hardness and porosity of the ceramic. The larger the mesh size of the particles of oil palm (the smaller the particle size) the higher the hardness of the ceramic, but the porosity is getting smaller.
{"title":"Effect of Particle Size from Oil Palm Wood Powder as Pore Forming Agent on Porosity and Hardness of Porous Ceramics based on Clay and Polyvinyl Alcohol","authors":".. Marpongahtun, Darwin Yunus Nasution, Taufik Hidayat","doi":"10.5220/0008925902930296","DOIUrl":"https://doi.org/10.5220/0008925902930296","url":null,"abstract":": Preparation of porous ceramics based on polyvinyl alcohol and clay has been carried out by using oil palm wood powder as a pore forming agent. Porous ceramics are made with a composition: 80% clay, 15% PVA and 5% oil palm wood powder. The size of the particles of palm oil wood powder is varied, namely 100, 150 and 200 mesh. The sintering process is carried out at a temperature of 1000 °C with a holding time of 2 hours. The chemical composition of clay is determined by EDX analysis. The porous ceramics produced were tested for porosity and hardness. The result shows that the particle size of oil palm wood powder is very influential on the hardness and porosity of the ceramic. The larger the mesh size of the particles of oil palm (the smaller the particle size) the higher the hardness of the ceramic, but the porosity is getting smaller.","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":"75038375","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: 10.5220/0009005103350338
B. Wirjosentono, Tamrin, A. Siregar, D. A. Nasution, Isna Shara Siregar, S. Fazira, Hanifah Siregar, N. Mardhiah
Rice analogue based on cassava starch is gaining attention in Indonesia due to its 23.7 million ton annual production of cassava has not been utilised optimally as alternative foods, and its relying on conventional rice as staple food by its increasing population. In this work an extrusion technique has been carried out to produce rice analogues using cassava starch (CS) and corn powder (CP) as basic raw materials and addition of natural fibres (NFs), i.e. taro powder (TP), breadfruit powder (BFP), seaweeds powder (SWP) and soymilk solid powder (SMP). It was found that optimum composition possesses physical properties and disolution time comparable to those of conventional rice was obtained when used weight ratio of CS/CP/NFs: 70/30/15. Morphological characterisation of the rice analogues showed fine distribution of natural fibres in the rice matrices, whereas addition of the natural fibres increased decomposition temperatures but did not affect melting temperature of the gelatinous phase significantly. It was also found that reduce carbohydrate and increase fibre and protein as well as other nutrition contents in the rice analogue have been revealed, therefore the rice analogues are suitable as alternative for diabetic and diet foods.
{"title":"Addition of Taro, Breadfruit, Seaweeds and Soymilk Waste Powders into Cassava Starch and Corn Powder-based Rice Analogues","authors":"B. Wirjosentono, Tamrin, A. Siregar, D. A. Nasution, Isna Shara Siregar, S. Fazira, Hanifah Siregar, N. Mardhiah","doi":"10.5220/0009005103350338","DOIUrl":"https://doi.org/10.5220/0009005103350338","url":null,"abstract":"Rice analogue based on cassava starch is gaining attention in Indonesia due to its 23.7 million ton annual production of cassava has not been utilised optimally as alternative foods, and its relying on conventional rice as staple food by its increasing population. In this work an extrusion technique has been carried out to produce rice analogues using cassava starch (CS) and corn powder (CP) as basic raw materials and addition of natural fibres (NFs), i.e. taro powder (TP), breadfruit powder (BFP), seaweeds powder (SWP) and soymilk solid powder (SMP). It was found that optimum composition possesses physical properties and disolution time comparable to those of conventional rice was obtained when used weight ratio of CS/CP/NFs: 70/30/15. Morphological characterisation of the rice analogues showed fine distribution of natural fibres in the rice matrices, whereas addition of the natural fibres increased decomposition temperatures but did not affect melting temperature of the gelatinous phase significantly. It was also found that reduce carbohydrate and increase fibre and protein as well as other nutrition contents in the rice analogue have been revealed, therefore the rice analogues are suitable as alternative for diabetic and diet foods.","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":"74583023","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: 10.5220/0008869301970203
Maulidna, B. Wirjosentono, Tamrin, L. Marpaung
: Kecombrang ( Etlingera elatior ) is a zingiberaceae plant, which has long been known as one of the vegetables and used by the community as a nutritious food to preserve food because of the active substances contained in it, such as saponins, flavanoids, and polyphenols. In this research, antioxidants activity of kecombrang flower extract was measured by using 1,1-diphenyl-2-picrilhidrazil (DPPH) method. The kecombrang flower extract has several secondary metabolite compounds, such as alkaloid, terpenoid, steroid, phenolic, flavonoid, tanin with very small antioxidant activity, which is showed by inhibition percentage. As many as 100 ppm concentration of the kecombrang flower extract, ie, methanol extract 3.21%, ethyl acetate extract 5.08 %, and n-hexane extract 30.29%. So it can be concluded that the antioxidant activity of flower kecombrang ( Etlingera elatior ) is less active.
{"title":"Antioxidants Activity of the Kecombrang Flower (Etlingera elatior) Extract by using 1.1-diphenyl-2-picrilhidrazyl (DPPH) Method","authors":"Maulidna, B. Wirjosentono, Tamrin, L. Marpaung","doi":"10.5220/0008869301970203","DOIUrl":"https://doi.org/10.5220/0008869301970203","url":null,"abstract":": Kecombrang ( Etlingera elatior ) is a zingiberaceae plant, which has long been known as one of the vegetables and used by the community as a nutritious food to preserve food because of the active substances contained in it, such as saponins, flavanoids, and polyphenols. In this research, antioxidants activity of kecombrang flower extract was measured by using 1,1-diphenyl-2-picrilhidrazil (DPPH) method. The kecombrang flower extract has several secondary metabolite compounds, such as alkaloid, terpenoid, steroid, phenolic, flavonoid, tanin with very small antioxidant activity, which is showed by inhibition percentage. As many as 100 ppm concentration of the kecombrang flower extract, ie, methanol extract 3.21%, ethyl acetate extract 5.08 %, and n-hexane extract 30.29%. So it can be concluded that the antioxidant activity of flower kecombrang ( Etlingera elatior ) is less active.","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":"80807847","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: 10.5220/0008838300180020
R. Siburian, Sabarmin Perangin-angin, H. Sembiring, C. Simanjuntak, Yopi Sihombing
Even though lithium is expected to remain the dominant battery technology for the next decade, new battery technologies are on their way. N-Graphene and Mn/N-Graphene have the potential to be used as an alternative electrode on primary battery anode. The results showed that the N-Graphene diffraction showed a weak and wide peak at 2θ = 26.5 which indicates that N-Graphene was formed. The data is consistent with EDX data, where the abundance of N atoms in N-Graphene (4.68%). At the Mn / N-Graphene electrode a sharp peak appears at 2θ = 31, indicating that Mn is deposited in N-Graphene. The EDX data also shows that Mn atoms are deposited in graphene (0.15%). Mn / N-Graphene has the highest conductivity value (1250 μS/ cm) compared to primary battery anodes (10 μS / cm), Graphite/N-Graphene (350 μS / cm) and N-Graphene
尽管锂电池在未来十年仍将占据主导地位，但新的电池技术也在不断涌现。n -石墨烯和Mn/ n -石墨烯具有作为原电池阳极替代电极的潜力。结果表明:n -石墨烯衍射峰在2θ = 26.5处呈弱宽峰，表明n -石墨烯已经形成;数据与EDX数据一致，N-石墨烯中N原子的丰度为4.68%。Mn / n -石墨烯电极在2θ = 31处出现尖峰，表明Mn沉积在n -石墨烯中。EDX数据还显示Mn原子沉积在石墨烯中(0.15%)。与原电池阳极(10 μS/ cm)、石墨/ n -石墨烯(350 μS/ cm)和n -石墨烯相比，Mn / n -石墨烯具有最高的电导率值(1250 μS/ cm)
{"title":"Mangan Coated N-Graphene for Good Performance Electrode in Primary Battery Anode","authors":"R. Siburian, Sabarmin Perangin-angin, H. Sembiring, C. Simanjuntak, Yopi Sihombing","doi":"10.5220/0008838300180020","DOIUrl":"https://doi.org/10.5220/0008838300180020","url":null,"abstract":"Even though lithium is expected to remain the dominant battery technology for the next decade, new battery technologies are on their way. N-Graphene and Mn/N-Graphene have the potential to be used as an alternative electrode on primary battery anode. The results showed that the N-Graphene diffraction showed a weak and wide peak at 2θ = 26.5 which indicates that N-Graphene was formed. The data is consistent with EDX data, where the abundance of N atoms in N-Graphene (4.68%). At the Mn / N-Graphene electrode a sharp peak appears at 2θ = 31, indicating that Mn is deposited in N-Graphene. The EDX data also shows that Mn atoms are deposited in graphene (0.15%). Mn / N-Graphene has the highest conductivity value (1250 μS/ cm) compared to primary battery anodes (10 μS / cm), Graphite/N-Graphene (350 μS / cm) and N-Graphene","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":"76457099","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: 10.5220/0008878602150217
S. Lenny, Dinda Widya Rizky
This study was performed to determine the bioactivity of methanolic extract of Vigna unguiculata (L.) Walp leaves as potential antibacterial and antioxidant. Based on the phytochemical screening, the methanolic extract of methanolic extract of V. unguiculata (L.) Walp leaves showed the presence of phenolic, terpenoid and saponin. The 15 wt.% of methanolic extract of V. unguiculata (L.) Walp leaves exhibited a moderate antibacterial activity against Gram positive bacterium (S. aureus) with 15.5 cm of inhibition zone diameter. But negative result was obtained against Gram negative (E. coli). The antioxidant activity of methanolic extract of V. unguiculata (L.) Walp leaves against DPPH that determined as IC50 was 66.71 mg/L.
{"title":"Potential Antibacterial and Antioxidant Activiy of Methanolic Extract of Vigna unguiculata (L.) Walp Leaves","authors":"S. Lenny, Dinda Widya Rizky","doi":"10.5220/0008878602150217","DOIUrl":"https://doi.org/10.5220/0008878602150217","url":null,"abstract":"This study was performed to determine the bioactivity of methanolic extract of Vigna unguiculata (L.) Walp leaves as potential antibacterial and antioxidant. Based on the phytochemical screening, the methanolic extract of methanolic extract of V. unguiculata (L.) Walp leaves showed the presence of phenolic, terpenoid and saponin. The 15 wt.% of methanolic extract of V. unguiculata (L.) Walp leaves exhibited a moderate antibacterial activity against Gram positive bacterium (S. aureus) with 15.5 cm of inhibition zone diameter. But negative result was obtained against Gram negative (E. coli). The antioxidant activity of methanolic extract of V. unguiculata (L.) Walp leaves against DPPH that determined as IC50 was 66.71 mg/L.","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":"74357687","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: 10.5220/0008863201560159
Rumzil Laili, N. Aminah, T. M. Thant, Y. Takaya, Ainun Sa'adah, A. Kristanti
: Exploration of secondary metabolites was the focus of this research, especially of Artocarpus calophylla species to look for a potential cytotoxic agent. An arylbenzofuran derivative compound, namely heterophyllene A was isolated from the stem bark of Artocarpus calophylla . Structure determination of this compound has been elucidated using UV-Vis spectroscopy, 1D, and 2D NMR analysis. This compound has a lower IC 50 than ethyl acetate extract. The IC 50 of this compound (57,54 µg/mL) to HeLa and (25,80 µg/mL) to T47D cells, ethyl acetate extract (>100 µg/mL) to HeLa and (84,16 µg/mL) to T47D cells.
{"title":"Cytotoxicity of Heterophyllene A, the Derivative of Arylbenzofuran from Stem Bark of Artocarpus calophylla","authors":"Rumzil Laili, N. Aminah, T. M. Thant, Y. Takaya, Ainun Sa'adah, A. Kristanti","doi":"10.5220/0008863201560159","DOIUrl":"https://doi.org/10.5220/0008863201560159","url":null,"abstract":": Exploration of secondary metabolites was the focus of this research, especially of Artocarpus calophylla species to look for a potential cytotoxic agent. An arylbenzofuran derivative compound, namely heterophyllene A was isolated from the stem bark of Artocarpus calophylla . Structure determination of this compound has been elucidated using UV-Vis spectroscopy, 1D, and 2D NMR analysis. This compound has a lower IC 50 than ethyl acetate extract. The IC 50 of this compound (57,54 µg/mL) to HeLa and (25,80 µg/mL) to T47D cells, ethyl acetate extract (>100 µg/mL) to HeLa and (84,16 µg/mL) to T47D cells.","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":"76771564","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: 10.5220/0008856701130115
S. Humaidi, T. Simbolon, D. Barus, Veryyon Hrp, S. Perdamean, K. Chandra, S. EkoArif, S. Silviana
High Energy Milling (HEM) followed by heat treatment was used to prepare M-type BaFe12O19/ZnO magnetic material in toluene media. High purity of BaFe12O19 and ZnO powder was milled for 12 h followed by drying for 4 h before being calcined at a temperature of 900C. The powder was then filtered by using T-200. An appropriate amount of BaFe12O19 and ZnO were then mixed in wet-milling for 15 mins and dried at 200C for 1 h. The magnetic properties were analysed using VSM, whereas the phase formation was derived from XRD-pattern (powder method) using X-ray CuKα 40kV-30mA with λ= 1.5418 Å. The phase occurrence was determined using MATCH-software program. It was obtained that BaFe12O19 lattice parameter: a = 5.8930 Å, c = 23.1940 Å. In order to get soft magnetic state, ZnO was added with a composition of: 0/100, 25/100, 50/100, 75/100, respectively. It was found that addition of 75% ZnO to BaFe12O19 converted hard magnet to soft magnet.
{"title":"Phase Formation of M-Type BaFe12O19/ZnO Magnetic Material","authors":"S. Humaidi, T. Simbolon, D. Barus, Veryyon Hrp, S. Perdamean, K. Chandra, S. EkoArif, S. Silviana","doi":"10.5220/0008856701130115","DOIUrl":"https://doi.org/10.5220/0008856701130115","url":null,"abstract":"High Energy Milling (HEM) followed by heat treatment was used to prepare M-type BaFe12O19/ZnO magnetic material in toluene media. High purity of BaFe12O19 and ZnO powder was milled for 12 h followed by drying for 4 h before being calcined at a temperature of 900C. The powder was then filtered by using T-200. An appropriate amount of BaFe12O19 and ZnO were then mixed in wet-milling for 15 mins and dried at 200C for 1 h. The magnetic properties were analysed using VSM, whereas the phase formation was derived from XRD-pattern (powder method) using X-ray CuKα 40kV-30mA with λ= 1.5418 Å. The phase occurrence was determined using MATCH-software program. It was obtained that BaFe12O19 lattice parameter: a = 5.8930 Å, c = 23.1940 Å. In order to get soft magnetic state, ZnO was added with a composition of: 0/100, 25/100, 50/100, 75/100, respectively. It was found that addition of 75% ZnO to BaFe12O19 converted hard magnet to soft magnet.","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":"78325795","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: 10.5220/0008856401050112
B. Yudono, S. Estuningsih, Muhammad Tri Handoko, M. Said
Kinetics of crude oil solubility in bio surfactant of Brevundimonas diminuta and Pseudomonas citronellolis bacterias was studied by using a combination of differential and integral methods. The order of reaction and reaction rate constants of crude oil solubility was determined by using differential and integral methods respectively. The observation was carried out for 10 days, and integral method observation was carried out every 2 days, for 10 days. The initial TPH concentration (Total Petroleum Hydrocarbon) of sludge sequently were 1.64; 3.28; 4.91; 6.11 and 7.57 % (w/w). After 10 days’ treatment by using B. diminuta bacteria, the TPH concentrations were decreased to 1.24; 2.43; 3.61; 4.32; 5.07% (w/w) and the TPH concentration using P. citronellolis decreased to 1.07; 2.10; 3.13; 3.79; 4.40% (w/w). The order reaction which determined by using differential method were 1.81 for B. diminuta and 1.1 for P. citronellolis. Furthermore, the order reaction was put in the integral equation thus forming reaction rate constants equation of crude oil solubility which are 0.018 day-1 for B. diminuta and 0.033 day-1 for P. citronellolis. Qualitative analysis which were carried out by using GC showed that bio surfactant from B. diminuta was able to dissolve hydrocarbon compounds of crude at fraction with lower C atomic chain C22. Bio surfactant from P. citronellolis was able to dissolve hydrocarbon compound with atomic chain C10 – C14.
{"title":"Kinetics of Petroleum Oil Recovery in Bio Surfactant of Brevundimonas diminuta and Pseudomonas citronellolis Bacteria Solutions","authors":"B. Yudono, S. Estuningsih, Muhammad Tri Handoko, M. Said","doi":"10.5220/0008856401050112","DOIUrl":"https://doi.org/10.5220/0008856401050112","url":null,"abstract":"Kinetics of crude oil solubility in bio surfactant of Brevundimonas diminuta and Pseudomonas citronellolis bacterias was studied by using a combination of differential and integral methods. The order of reaction and reaction rate constants of crude oil solubility was determined by using differential and integral methods respectively. The observation was carried out for 10 days, and integral method observation was carried out every 2 days, for 10 days. The initial TPH concentration (Total Petroleum Hydrocarbon) of sludge sequently were 1.64; 3.28; 4.91; 6.11 and 7.57 % (w/w). After 10 days’ treatment by using B. diminuta bacteria, the TPH concentrations were decreased to 1.24; 2.43; 3.61; 4.32; 5.07% (w/w) and the TPH concentration using P. citronellolis decreased to 1.07; 2.10; 3.13; 3.79; 4.40% (w/w). The order reaction which determined by using differential method were 1.81 for B. diminuta and 1.1 for P. citronellolis. Furthermore, the order reaction was put in the integral equation thus forming reaction rate constants equation of crude oil solubility which are 0.018 day-1 for B. diminuta and 0.033 day-1 for P. citronellolis. Qualitative analysis which were carried out by using GC showed that bio surfactant from B. diminuta was able to dissolve hydrocarbon compounds of crude at fraction with lower C atomic chain <C10–C14 and C atomic longer >C22. Bio surfactant from P. citronellolis was able to dissolve hydrocarbon compound with atomic chain C10 – C14.","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":"91425587","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: 10.5220/0008869402040210
F. Sebayang, Rumondang Bulan, Emma Zaidar Nasution, M. Z. E. Sinaga, W. A. Putri
: Making hydrogels from crosslinked reactions between cellulose oxidized with chitosan through Schiff base formation reaction has been investigated as a wound healing drug in vivo. α-Cellulose obtained from the isolation of coconut fiber by 14.24 g. α-Cellulose is oxidized by using KIO 4 to be dialdehyde cellulose. The degree of oxidation of cellulose dialdehyde is 86%. Hydrogels were made by schiff base crosslinking reaction between chitosan and dialdehyde cellulose with temperature variations of 75, 100, 125 and 150 oC. The optimum temperature in hydrogel synthesis is 100 oC. the formation of a hydrogel is supported by the presence of FTIR Spectrophotometer where the spectrum of 1643.35 cm-1 is formed where the group -C=N- which shows the formation of a Schiff base reaction. The hydrogel that is obtained has a good swelling ability of more than 1000%. Invivo analysis was carried out for 7 days in mice and as a result, the injured mice have recovered and have not left a mark.
研究了纤维素与壳聚糖氧化后通过席夫碱形成反应交联制备水凝胶作为伤口愈合药物的实验研究。从椰子纤维中分离得到14.24 g α-纤维素，α-纤维素经KIO 4氧化得到双醛纤维素。纤维素二醛的氧化度为86%。壳聚糖与双醛纤维素在75、100、125、150℃温度下进行希夫碱交联反应制备水凝胶。水凝胶合成的最佳温度为100℃。FTIR分光光度计的存在支持了水凝胶的形成，在- c =N-基团处形成了1643.35 cm-1的光谱，表明了席夫碱反应的形成。所制得的水凝胶具有良好的溶胀能力，溶胀率可达1000%以上。对小鼠进行了7天的体内分析，结果受伤的小鼠已经恢复，没有留下任何痕迹。
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