Ditemukan 4 dokumen yang sesuai dengan query
Ivandini Tribidasari Anggraningrum
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ABSTRACT
In order to shorten the measurement time of biochemical oxygen demand (BOD), a BOD sensor based on yeast metabolism was developed. Local yeast, Indonesian Origin, Candida fukuyamaensis UICC Y-247, was used as a transducer. The yeast was immobilized as a thin film in ag
arose matrix with the auxiliary of Nafion® acting as the membrane for ion exchange process. The film was then attached to gold-modified glassy carbons and used as transducer on the working electrodes. ...
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[Direktorat Riset dan Pengabdian Masyarakat UI;Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia;Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia;Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, Universitas Indonesia], 2011
J-Pdf
Artikel Jurnal Universitas Indonesia Library
Wiyogo P. Wicaksono
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Pengembangan Strip Test Immunokromatografi untuk Pendeteksi Melamine Secara Selektif dan Kuantitatif. Strip test berbasis imunokromatografi berdasarkan reaksi pembentukan kompleks antigen-antibodi (melamin-antimelamin) dikembangkan untuk mendeteksi melamin secara kuantitatif. Nanopartikel emas (AuNP) digunakan sebagai label pada antibodi untuk membentuk antibodi berlabel AuNP yang kemudian berfungsi sebagai biosensor. Kuantifikasi melamin diperoleh dengan menentukan konsentrasi AuNP menggunakan teknik anodic stripping voltammetry. Boron-doped diamond digunakan sebagai elektroda kerja. Dengan volume sampel 100 μL dan waktu imunoreaksi 7 menit, strip test ...
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Universitas Indonesia, 2014
pdf
Artikel Jurnal Universitas Indonesia Library
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Two flavonoid compounds, 5,7,3?,4?-tetrahydroxy-6-geranylflavonol (1) and kaempferol 7-O-β-glucose (2) have been
isolated from the leaves of Macaranga hispida (Blume), Mull.Arg. Isolation and purification were conducted by
chromatography methods and chemical structure characterization was carried out by spectroscopic methods. The
5,7,3?,4?-tetrahydrxyi-6-geranyl flavonol (1) and kaempferol 7-O-glucose (2) had moderate cytotoxic activity against
murine leukemia P-388 cell lines with IC50 value of 0.22 and 101.5 μg/mL, respectively. The IC50 for antioxidant
activities of (1) and (2) were 2.83 and 13.95 μg/mL, respectively. ...
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Tangerang Selatan: Research Center for Chemistry-LIPI, Region PUSPIPTEK Serpong, Banten, 2015
AJ-Pdf
Artikel Jurnal Universitas Indonesia Library
Ashadi Sasongko
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Mannan is an abundant polysaccharide that can be found in konjac (Amorphophallus sp.). Mannan can be enzymatically
hydrolyzed using mannanase to produce manno-oligosaccharides which can be used as a prebiotic. The aims of this
research are to determine the production time of mannanase from Streptomyces lipmanii, perform enzyme
characterization, optimize the hydrolysis time, and characterize the hydrolysis product. A qualitative assay using the
indicator Congo red showed that S. lipmanii generated a clear zone, indicating that S. lipmanii produced ...
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Kalimantan Institute of Technology, Karang Joang, Balikpapan, East Kalimantan, 2015
J-Pdf
Artikel Jurnal Universitas Indonesia Library
