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Mataranine A And B: A New Diastomeric Indole
Alkaloid From Alstonia Scholaris R.Br. Of Lombok
Island
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By
Surya Hadi © 2009. Universitas Gadjah Mada
Indonesian Journal of Chemistry, Volume 9, Issue 3
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505-514 Page(s) |
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Abstract
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Alstonia scholaris R. Br., (Apocynaceae) is widely distributed in Indonesia and in Lombok Island, the plant locally known as "lolon nita" has been used to treat malaria. |
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Keywords
Alkaloids, Alstonia Scholaris, Lombok, Mataranine
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Screening Mikroorganisme Termofilik Penghasil
Enzim Fitase yang Tumbuh Di Kawah Ijen Banyuwangi
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By
Aline Puspita Kusumadjaja, Tutuk Budiati, Ni Nyoman Tri Puspaningsih and Sajidan © 2009. Universitas Gadjah Mada
Indonesian Journal of Chemistry, Volume 9, Issue 3
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500-504 Page(s) |
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Abstract
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Phytase is enzyme which hydrolysis phytic acid to anorganic phosphate and myo-inositol pentakis-, tetrakis-, tris-, bis-, and monophosphate. |
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Keywords
Phytase, thermophilic microorganism, phytase activity
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Δ6,7-Anhidroeritromisin-A Sebagai Metabolit
Baru Dalam Fermentasi Saccharopolyspora erythraea
ATCC 11635
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By
Khairan, Umar A. Jenie and Retno S. Sudibyo © 2009. Universitas Gadjah Mada
Indonesian Journal of Chemistry, Volume 9, Issue 3
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491-499 Page(s) |
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Abstract
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Semisynthesis of Δ6,7-Anhydroerythromycin-A was done by biomodification technique by addition of 0.2% INH into a culture fermentation. |
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Keywords
Isoniazid, Enoyl Reduction, Δ6,7-Anhidroeritromisin-A, Fragmentation, Lc-Ms.
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The Applicability Of The Crystal Structure Of
Termotoga Maritima 4-α-Glucanotransferase As
The Template For Sulochrin As α-Glucosidase
Inhibitors
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By
Rizna Triana Dewi, Yulia Anita, Enade Perdana Istyastono, Akhmad Darmawan and Muhamad Hanafi © 2009. Universitas Gadjah Mada
Indonesian Journal of Chemistry, Volume 9, Issue 3
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487-490 Page(s) |
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Abstract
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Interaction of sulochrin to active site of glucosidase enzyme of Termotoga maritime has been studied by employing docking method. |
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Keywords
Docking, sulochrin, α-glucosidase Inhibitor, Thermotoga maritime α-glucotransferase, Saccharomyces cerevisiae α-glucosidase, MOE
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Senyawa Poriferasta-5,22E,25-trien-3β-ol dari
Daun Clerodendrum paniculatum sebagai Agen
Penginduksi Ketahanan Sistemik pada Tanaman Cabai
Merah Capsicum annuum L terhadap Cucumber Mosaic
Virus (CMV)
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By
Weny Musa, Hersanti, Achmad Zainuddin and Roekmi-ati Tjokronegoro © 2009. Universitas Gadjah Mada
Indonesian Journal of Chemistry, Volume 9, Issue 3
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479-486 Page(s) |
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Abstract
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The poriferasta-5.22E.25-trien-3β-ol compound of leaves of this plant Clerodendrum paniculatum has activity as an inducer agent. |
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Keywords
Poriferasta-5.22E.25-trien-3β-ol, Clerodendrum paniculatum, induction of systemic resistance, CMV
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Esterifikasi Asam Lemak dari Limbah Kelapa Sawit
(Sludge Oil) Menggunakan Katalis Tawas
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By
Thamrin Usman, Lucy Ariany, Winda Rahmalia and Romi Advant © 2009. Universitas Gadjah Mada
Indonesian Journal of Chemistry, Volume 9, Issue 3
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474-478 Page(s) |
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Abstract
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Esterification of fatty acids from palm oil waste (sludge oil) as biodiesel liquid base has been done by using alum [Al2(SO4)3.14H2O] catalyst. |
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Keywords
Alum, Biodiesel, Esterification, Sludge Oil
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Phytochemical Studies Of The Petroleum Ether
Extract Of The Leaves Of Lagerstroemia Speciosa
Linn
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By
S.M. Mizanur Rahman, Shayla Pervin, Md. Abdul Quader and M. Amzad Hossain © 2009. Universitas Gadjah Mada
Indonesian Journal of Chemistry, Volume 9, Issue 3
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470-473 Page(s) |
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Abstract
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Two new compounds, normal alcohol containing of higher carbons and isomer of β-sitosterol were isolated for the first time from the petroleum extract of the leaves of Lagerstroemia speciosa. |
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Keywords
Lagerstroemia speciosa, petroleum ether extracts, isolation, 1-nonanol, 2 β-sitostero, spectral analyses
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Anti Diabetic Flavanone Compound From The Leaves
Of Artocarpus Communis
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By
Puspa D.N. Lotulung, Sofa Fajriah, Andini Sundowo and Euis Filaila © 2009. Universitas Gadjah Mada
Indonesian Journal of Chemistry, Volume 9, Issue 3
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466-469 Page(s) |
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Abstract
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The Flavanone compound with anti diabetic activity was isolated from ethyl acetate extract of Artocarpus communis leaves using column chromatography techniques. |
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Keywords
Artocarpus communis, 8-geranyl-4,5,7-trihydroxyflavone, anti diabetic activity
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Aphorpine Alkaloids From Bark Of Cryptocarya
Ferrea
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By
Nurdin Saidi, A. Hamid A. Hadi, Khalijah Awang and Mat Ropi Mukhtar © 2009. Universitas Gadjah Mada
Indonesian Journal of Chemistry, Volume 9, Issue 3
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461-465 Page(s) |
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Abstract
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Isolation, identification and characterization of the compounds isolated from the bark of Cryptocarya ferrea yielded three known aphorpine alkaloids. |
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Keywords
Cryptocarya ferrea; (-)-o-methylisopiline, (+)-norlirioferine, (+)-lirioferine
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Antioxidant Activity Of Methyl Gallate Isolated
From The Leaves Of Toona Sureni
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By
M.Taufik Ekaprasada, Hazli Nurdin, Sanusi Ibrahim and Dachriyanus © 2009. Universitas Gadjah Mada
Indonesian Journal of Chemistry, Volume 9, Issue 3
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457-460 Page(s) |
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Abstract
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An antioxidant compound has been isolated from the leaves of Toona sureni (Blume) Merr. The structure was determined to be methyl 3,4,5-trihydroxybenzoate (methyl gallate). |
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Keywords
Antioxidant Activity, Methyl Gallate, Toona Sureni
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Extraction, Clean-Up, And Hplc Detection Of
Carbaryl And Carbofuran From Cabbage (Brassica
Oleracea)
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By
Iip Izul Falah © 2009. Universitas Gadjah Mada
Indonesian Journal of Chemistry, Volume 9, Issue 3
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452-456 Page(s) |
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Abstract
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Carbaryl (1-naphthyl-N-methylcarbamate) and carbofuran (2,3-dihydro-2,2-dimethyl-7-benzofuranol-N-methylcarbamate) are very important. |
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Keywords
HPLC, carbaryl, carbofuran, extraction, clean-up
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Sintesis Surfaktan Dilauroil Maltosa Melalui
Reaksi Asetilasi Terhadap Maltosa yang Diikuti
Reaksi Transesterifikasi dengan Metil Laurat
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By
Daniel © 2009. Universitas Gadjah Mada
Indonesian Journal of Chemistry, Volume 9, Issue 3
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445-451 Page(s) |
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Abstract
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Maltose has been partially acetylated from the reaction of melted maltose and acetic anhydride without solvent and catalyst to produce maltocyl acetate with the yield of 67%. |
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Keywords
Surfactant Transesterification, Maltose
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Adsorpsi Pb(II) dan Cr(III) oleh Polimer
Polipropilkaliks[4]arena
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By
Suryadi Budi Utomo, Jumina and Tutik Dwi Wahyuningsih © 2009. Universitas Gadjah Mada
Indonesian Journal of Chemistry, Volume 9, Issue 3
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437-444 Page(s) |
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Abstract
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A research has been conducted to investigate the adsorption behavior of Pb(II) and Cr(III) onto polypropylcalix[4]arene polymer. |
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Keywords
Polypropylcalix[4]arene, adsorption, Pb(II), and Cr(III)
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Theoretical Study Of The [Fe(En)2(Ncs)2] Complex
With Reparameterized Density Functionals
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By
Yusthinus T. Male, Djulia Onggo, Muhamad A. Martoprawiro and Ismunandar © 2009. Universitas Gadjah Mada
Indonesian Journal of Chemistry, Volume 9, Issue 3
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432-436 Page(s) |
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Abstract
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Quantum chemical studies have been carried out on the Fe(en)2(NCS)2 (en = ethylenediamine) complex both in low and high spin states. |
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Keywords
Electronic structure, spin states, density functional, frontiers orbitals
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Kualitas Udara Kota Yogyakarta Ditinjau dari Kadar
Partikulat Timah Hitam (Pb)
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By
Zaenal Abidin and Sunardi © 2009. Universitas Gadjah Mada
Indonesian Journal of Chemistry, Volume 9, Issue 3
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425-431 Page(s) |
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Abstract
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Analysis of Yogyakarta air quality based on concentration of lead particulate using Fast Neutron Activation Analysis (FNAA) method has been done. |
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Keywords
Air Borne, Neutron Generator, Fnaa
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