9-Methoxycanthin-6-one compound has been isolated from Pasak Bumi (E. Longifolia) roots. The isolation process using maseration, colum chromatography vacuum, and recrystallization techniques. E. Longifolia root maserated with n-hexane and methanol respectively. The methanol extract fractionated using column chromatography vacuum with gradient elution (hexane-etil acetate) to obtain 9 fractions. Fraction 5 further purification using recrystallization technique to obtain yellow crystal, identified by LC-MS and NMR spectroscopy as 9Methoxycanthin-6-one Keyword: E. Longifolia, isolation, spectroscopy, 9Methoxycan thin-6-one.
{"title":"Isolation and Identification of 9-methoxycanthin-6-0ne Compound From Eurycoma Longifolia Roots","authors":"S. Fajriah, M. Hanafi, A. Sumiati, N. Ngadiman","doi":"10.14203/jkti.v12i2.213","DOIUrl":"https://doi.org/10.14203/jkti.v12i2.213","url":null,"abstract":"9-Methoxycanthin-6-one compound has been isolated from Pasak Bumi (E. Longifolia) roots. The isolation process using maseration, colum chromatography vacuum, and recrystallization techniques. E. Longifolia root maserated with n-hexane and methanol respectively. The methanol extract fractionated using column chromatography vacuum with gradient elution (hexane-etil acetate) to obtain 9 fractions. Fraction 5 further purification using recrystallization technique to obtain yellow crystal, identified by LC-MS and NMR spectroscopy as 9Methoxycanthin-6-one Keyword: E. Longifolia, isolation, spectroscopy, 9Methoxycan thin-6-one.","PeriodicalId":13440,"journal":{"name":"Indonesian Journal of Applied Chemistry","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2010-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75689482","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 : 1996-01-01DOI: 10.14203/jkti.v6i1-2.231
H. Imai, H. Hirashima, S. Tursiloadi
Translucent Lead Zirconate Titanate (PZT) gel-monolith was prepared by partially hydrolyzing metal alkoxides solution which modified with acetylacetone(acacH). Metal alkoxides, lead di-i-propoxide, zirconium tetra-nbutoxide and titanium tetra-i-propoxide were used as starting materials. In Infrared spectra for the translucent monolithic gel after aging at room temperature for several days or drying at 90°C for 18h, the most significant feature is the presence of band at around 1554 cm-1 which can be assigned to the v (C-O) and v (C-C) vibrati-ons of acetylacetanate group coordinated to the metal cations Ti and Zr. The diffraction peaks of PbO were found after heating at 300°C for 2h. After heating at 450 °C for 2 h, diffraction peaks of pyrochlore Pb2 Ti206 and perovskite PZT phase were observed. The diffraction peaks of PbO and pyrochlore phase disappeared after heating at 600°C, and tetragonal perovskite phase was stable up to 1000 °C. The diffraction peaks of perovskite phase were also found after heating at 430 ° for 24 h. The density of the compacted pulverizedgel after heating at 1000°C for 30 min. was 6.9 g/cm3 , about 86% of the theoretical value.
{"title":"Sol-gel Process for the Manufacturing of Translucent Lead Zirconate Titanate Gel-monolith","authors":"H. Imai, H. Hirashima, S. Tursiloadi","doi":"10.14203/jkti.v6i1-2.231","DOIUrl":"https://doi.org/10.14203/jkti.v6i1-2.231","url":null,"abstract":"Translucent Lead Zirconate Titanate (PZT) gel-monolith was prepared by partially hydrolyzing metal alkoxides solution which modified with acetylacetone(acacH). Metal alkoxides, lead di-i-propoxide, zirconium tetra-nbutoxide and titanium tetra-i-propoxide were used as starting materials. In Infrared spectra for the translucent monolithic gel after aging at room temperature for several days or drying at 90°C for 18h, the most significant feature is the presence of band at around 1554 cm-1 which can be assigned to the v (C-O) and v (C-C) vibrati-ons of acetylacetanate group coordinated to the metal cations Ti and Zr. The diffraction peaks of PbO were found after heating at 300°C for 2h. After heating at 450 °C for 2 h, diffraction peaks of pyrochlore Pb2 Ti206 and perovskite PZT phase were observed. The diffraction peaks of PbO and pyrochlore phase disappeared after heating at 600°C, and tetragonal perovskite phase was stable up to 1000 °C. The diffraction peaks of perovskite phase were also found after heating at 430 ° for 24 h. The density of the compacted pulverizedgel after heating at 1000°C for 30 min. was 6.9 g/cm3 , about 86% of the theoretical value.","PeriodicalId":13440,"journal":{"name":"Indonesian Journal of Applied Chemistry","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90630848","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}
Performance study of laboratory scale Fluidised Drum Granulation (FDG) has been carried out using glass beads as model particles and melted wax as binder. The equipment was running well to coat the particle. The particle growth was simple, agglomerating or layering. Several process variables such as particle size, binder spray rate and amount of binder added, and drum speed were used to determine the unwanted agglomerate formation. The mass fraction of agglomerate formation increased sharply begin from initial particle size 3 mm to smaller. The transition size is 4 mm, there was virtually no agglomerate formation. Agglomerate formation also increased with' increasing binder spray rate, and varies little with drum speed and total amount of binder added.
{"title":"A Laboratory Study of Fluidised Drum Granulation","authors":"R. Sarwono","doi":"10.14203/jkti.v5i1.240","DOIUrl":"https://doi.org/10.14203/jkti.v5i1.240","url":null,"abstract":"Performance study of laboratory scale Fluidised Drum Granulation (FDG) has been carried out using glass beads as model particles and melted wax as binder. The equipment was running well to coat the particle. The particle growth was simple, agglomerating or layering. Several process variables such as particle size, binder spray rate and amount of binder added, and drum speed were used to determine the unwanted agglomerate formation. The mass fraction of agglomerate formation increased sharply begin from initial particle size 3 mm to smaller. The transition size is 4 mm, there was virtually no agglomerate formation. Agglomerate formation also increased with' increasing binder spray rate, and varies little with drum speed and total amount of binder added.","PeriodicalId":13440,"journal":{"name":"Indonesian Journal of Applied Chemistry","volume":"116 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86087470","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}
In an attempt to optimize citric acid fermentation, a study has been conducted to determine optimum nutritional conditions for the growth of Aspergillus niger ATCC 11414. The objective of the study was to obtain information on the growth of this strain in a submerged culture for the study of citric acid production The following article summarizes the results of study on the effects of trace metals and composition of chemically defined medium on mycelial growth of A.niger ATCC 11414. Chemically defined media containing glucose as the carbon source and energy were used throughout the work. Growth experiments were carried. out by a submerged culture process, in a 300-ml Erlenmeyer flask which contained 50ml liquid medium. The process was conducted at 30·C for 4 days in an orbital shaker incubator operated at 200 rpm. The cultivation process was followed by monitoring the changes in the culture medium of the concentrations of biomass, total reducing sugars, citric acid, and pH of the medium. It was concluded that copper (11), iron (JI), zinc (11), and manganese (11) ions had a remarkable effect on the growth of A. niger ATCC 11414. With 5% glucose, the study showed that 5 15 ppm copper, 0.5 25 ppm iron and 0.5 25 ppb manganese ions were optimal for the growth of the strain. The growth of the strain increased with the increase of Zn2+ added (0.5 25 ppm). The most optimal medium for the growth of A.niger ATCC 11414 was found to be able to produce more than 16 g of dry weight of biomass for 50 g glucose.
{"title":"Effects of Trace Metals and Medium Composition on the Growth of Aspergillus Niger Atcc 11414, in a Submerged Culture","authors":"Milono Poesponegoro, Oei Ban Liang","doi":"10.14203/jkti.v3i2.269","DOIUrl":"https://doi.org/10.14203/jkti.v3i2.269","url":null,"abstract":"In an attempt to optimize citric acid fermentation, a study has been conducted to determine optimum nutritional conditions for the growth of Aspergillus niger ATCC 11414. The objective of the study was to obtain information on the growth of this strain in a submerged culture for the study of citric acid production The following article summarizes the results of study on the effects of trace metals and composition of chemically defined medium on mycelial growth of A.niger ATCC 11414. Chemically defined media containing glucose as the carbon source and energy were used throughout the work. Growth experiments were carried. out by a submerged culture process, in a 300-ml Erlenmeyer flask which contained 50ml liquid medium. The process was conducted at 30·C for 4 days in an orbital shaker incubator operated at 200 rpm. The cultivation process was followed by monitoring the changes in the culture medium of the concentrations of biomass, total reducing sugars, citric acid, and pH of the medium. It was concluded that copper (11), iron (JI), zinc (11), and manganese (11) ions had a remarkable effect on the growth of A. niger ATCC 11414. With 5% glucose, the study showed that 5 15 ppm copper, 0.5 25 ppm iron and 0.5 25 ppb manganese ions were optimal for the growth of the strain. The growth of the strain increased with the increase of Zn2+ added (0.5 25 ppm). The most optimal medium for the growth of A.niger ATCC 11414 was found to be able to produce more than 16 g of dry weight of biomass for 50 g glucose.","PeriodicalId":13440,"journal":{"name":"Indonesian Journal of Applied Chemistry","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76281655","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 : 1992-01-01DOI: 10.14203/jkti.v2i1-2.279
P. Lotulung, T. Sato
When cyclic a, ~UllSaturated carbonyl compounds were irradiated by ultraviolet from a high pressure mercury vapour lamp at 25 ·C,.in alcohols in the presence of titanium chloride, a coupling reaction between the carbonyl carbon atom and the a-carbon atom of the alcohol took place, producing dihydrofurans, monomethylether, acetals oc aldehides, but in the case of a-methyl substituted enone it resulted in diol monomethylether due the two times occuring methanol substitution.
{"title":"Photoreaction of a, B - Enones in Methanol in the Presence of Titanium (IV) Chloride","authors":"P. Lotulung, T. Sato","doi":"10.14203/jkti.v2i1-2.279","DOIUrl":"https://doi.org/10.14203/jkti.v2i1-2.279","url":null,"abstract":"When cyclic a, ~UllSaturated carbonyl compounds were irradiated by ultraviolet from a high pressure mercury vapour lamp at 25 ·C,.in alcohols in the presence of titanium chloride, a coupling reaction between the carbonyl carbon atom and the a-carbon atom of the alcohol took place, producing dihydrofurans, monomethylether, acetals oc aldehides, but in the case of a-methyl substituted enone it resulted in diol monomethylether due the two times occuring methanol substitution.","PeriodicalId":13440,"journal":{"name":"Indonesian Journal of Applied Chemistry","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1992-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76313952","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 : 1992-01-01DOI: 10.14203/jkti.v2i1-2.281
A. T. Karossi, S. Pudjiraharti, L. Udin
The economical production of antibiotics to some extent depends on the availabilily of cheap substrates. The work reported in the present paper deals with the fermentative production of oxytetracycline by Streptomyces rimosus ATCC 33022 using commerciol high fructose syrup (HFS), vitamin B complex and citric acid of technical grode. The effects of concentration of high fructose syrup (0.5 - 2.5 %, v/v), commercial vitamin B complex (0.03 - 0.07 %, w/v) and the citric acid (0.34 - 1.28 %. w/v) were examined in this study. It was found that fermentation medium (medium-MHFS) containing high fructose syrup 1.0 % produced maximum activily of oxytetracycline after 4 days incubation period. Fermentation tnedium (mediwn-MBpleJ containing 0.05 % commerciol vitamin B complex showed maximum acrivily after 3 days incubation. While the addition of citric acid (0.64 %) to the fermentation medium (medium-MCA) was found optimumfor production oxytetracycline.
{"title":"Effects of Medium Composition on Oxytetracycline Production by Streptomyces Rimosus Atcc 33022","authors":"A. T. Karossi, S. Pudjiraharti, L. Udin","doi":"10.14203/jkti.v2i1-2.281","DOIUrl":"https://doi.org/10.14203/jkti.v2i1-2.281","url":null,"abstract":"The economical production of antibiotics to some extent depends on the availabilily of cheap substrates. The work reported in the present paper deals with the fermentative production of oxytetracycline by Streptomyces rimosus ATCC 33022 using commerciol high fructose syrup (HFS), vitamin B complex and citric acid of technical grode. The effects of concentration of high fructose syrup (0.5 - 2.5 %, v/v), commercial vitamin B complex (0.03 - 0.07 %, w/v) and the citric acid (0.34 - 1.28 %. w/v) were examined in this study. It was found that fermentation medium (medium-MHFS) containing high fructose syrup 1.0 % produced maximum activily of oxytetracycline after 4 days incubation period. Fermentation tnedium (mediwn-MBpleJ containing 0.05 % commerciol vitamin B complex showed maximum acrivily after 3 days incubation. While the addition of citric acid (0.64 %) to the fermentation medium (medium-MCA) was found optimumfor production oxytetracycline.","PeriodicalId":13440,"journal":{"name":"Indonesian Journal of Applied Chemistry","volume":"606 Pt 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1992-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80934974","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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