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Current Biochemistry Journal
Published by Institut Pertanian Bogor
ISSN : 23557877     EISSN : 23557931     DOI : -
Core Subject : Science, Education,
Biochemistry, Genetics & Molecular Biology Education
Current Biochemistry (CB) publishes the results of original research that contribute significantly to the understanding of the chemical compound and reaction that occur within living organism. Preference will be accorded to manuscripts that develop new concepts or experimantal approaches, particularly in the advancing areas of biochemistry science. Manuscripts that are primarily theoretical in nature or in the field of bioinformatics must be directed toward explaining important results previously not understood, making important predictions that can be experimentally tested, or developing segnificant advances in theory of general interest to biochemists. Submission of manuscripts in emerging areas in biochemistry, chemical biology, biophysics, proteomics, model studies and structures, cellular and molecular biology, computational biochemistry, biotechnology, and new methods development is encouraged especially if they address basic biochemical mechanisms.
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Articles 5 Documents
 1 
Search results for , issue "Vol. 2 No. 2 (2015)" : 5 Documents clear
Immobilization of Rhizopus oryzae Lipase on Zeolit, CaCO3, Silica Gel, and Cow Bone Maria Bintang; Tri Panji; Susi Saadah
Current Biochemistry Vol. 2 No. 2 (2015)
Publisher : IPB University

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Abstract

Food production in Indonesia is constrained by the high cost of lipase that is still imported from abroad. To overcome this problem, research of food production has been conducted using crude extract of lipase produced by indigenous species of fungi Rhizopus oryzae. The R. oryzae is edible indicating that it is safe to be used in the production of food products. Enzymes have an ability to catalyze specific chemical reactions with high efficiency and low energy cost. Enzyme immobilization is a recovery techique that has been studied in several years, using supporting materials as a medium to help enzyme dissolutions to the substrate. Several supporting materials such as zeolit, CaCO3, silica gel, and cow bone were selected by its ability to adsorb lipase. CaCO3 shows enzyme loading rate respectively 99.46%, giving more lipase to adsorb than zeolit (90.69%), cow bone (91.56%), and silica gel (59.63%). In this research, condition factors, such as optimum pH, optimum temperature, and storage ability of the matrix were investigated. Free lipase reacts optimally at pH 7 and temperature 30°C. Identical result showed for lipase in cow bone. Lipase in CaCO3 reacts optimally at pH 8 and temperature 35°C. Lipase in zeolit and silica gel reacts optimally at pH 8 and temperature 30°C. Half life time estimation was one week in storage condition temperature at 4°C and each optimum pH.
Anti-inflammatory Activity of Temulawak Nanocurcuminoid Coated with Palmitic Acid in The Sprague Dawley Rat Rini Novita; Laksmi Ambarsari; Syamsul Falah; Popi Asri Kurniatin; Waras Nurcholis; Latifah K Darusman
Current Biochemistry Vol. 2 No. 2 (2015)
Publisher : IPB University

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Abstract

Temulawak or Curcuma xanthorrhiza Roxb, is usually used as traditional medicine (herbal medicine) that has antioxidant, anticancer, antihyperglycemic, anti-inflammatory, hepatoprotective and gastroprotective properties. The main components contained in temulawak responsible for its efficacy as a medicine are xantorhizol and curcuminoid. Curcuminoid has drawbacks, which are difficult to absorb and very quickly metabolized by the body, so that limit its bioavailability. The use of solid lipid nanoparticle carrier system (SLN) in form of palmitic acid, is known to improve the bioavailability of curcuminoid. This study aims to find the effective dose of nanocurcuminoid coated with palmitic acid that can be used as an anti-inflammatory agent. The methods used in this study, include the production of nanocurcuminoid with homogenization and ultrasonication methods, determination of particle size, polydispersity index, entrapment efficiency and anti-inflammatory activity test through rat feet edema. Nanocurcuminoid obtained in this study was 561.53 nm in size, with polydispersity index 0.309 and concentrations of curcuminoid absorbed and entrapment efficiency were 0.61±0.031 mg/mL, 58.93±3.021%, respectively. Anti-inflammatory activity of nanocurcuminoid through treated Sprague Dawley rats, showed that there were no significant difference compared with the positive control, curcuminoid extracts and empty nanoparticle. These results indicate that nanocurcuminoid with 175, 200 and 250 mg/kg.bw in doses, has greater anti-inflammatory activity (31.70%) compared to the other treatments.
Isolation and Characterization of Endophytic Bacteria from Tembelekan (Lantana camara L.) as Antibacterial Compounds Producer Dina Dyah Saputri; Maria Bintang; Fachriyan H Pasaribu
Current Biochemistry Vol. 2 No. 2 (2015)
Publisher : IPB University

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Abstract

Endophytic bacteria are microorganisms that live in the internal tissues of plants and have symbiotic mutualism with their host plants. Endophytic bacteria may produce secondary metabolites that can be developed for medical, agricultural, and industrial purposes. Lantana camara is a medicinal plant that has therapeutic potential to treat a variety of diseases such as fever, tuberculosis, rheumatism, asthma, and skin disease. The purpose of this study was to isolate and characterize endophytic bacteria from Lantana camara which has potential to produce antibacterial compounds. The method of this research include isolation of endophytic bacteria of Lantana camara. Antibacterial activity assay was done against four types of pathogenic bacteria i.e. Bacillus cereus, Escherichia coli, Staphylococcus aureus, and Salmonella enteritidis. Characterization of endophytic bacteria was by 16S rRNA gene analysis and identification of antibacterial compounds by GC-MS analysis. Isolation of endophytic bacteria from Lantana camara resulted in BT22 as a potential isolate. Analysis of 16S rRNA gene showed that the BT22 isolate was similar to Bacillus amyloliquefaciens YB-1402 with 99% identity. The results of GC-MS analysis showed some antibacterial compounds such as: Cyclohexanone, 2-[2-(1,3-dithiolan-2-yl)propyl]-6-methyl-3-(1-methylethyl), Octadecane (CAS) n-Octadecane and Tetracosane (CAS) n-Tetracosane.
Activity of Skin Secretions of Frog Fejervarya limnocharis and Limnonectes macrodon against Streptococcus pneumoniae Multidrug Resistant and Molecular Analysis of Species F. limnocharis Jajang Suhyana; I Made Artika; Dodi Safari
Current Biochemistry Vol. 2 No. 2 (2015)
Publisher : IPB University

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Abstract

Indonesia has about 450 frog species which is approximately 20% of frog species in the world. Among frog species found in Indonesia are Fejervarya limnocharis dan Limnonectes macrodon belonging to family Dicroglossidae. Frog skin secretion is considered to have a potency to be used as an alternative source of antibacterial agent against Streptococcus pneumoniae multidrug resistant (MDR). The aims of the present study were to analyze antibacterial activity of skin secretions of F. limnocharis and L. macrodon against S. pneumoniae multidrug resistant (MDR) and conduct molecular phylogenetic analysis of the frog used to ensure classification of frog species. The release of skin secretion was stimulated using epinephrine injection. Antibacterial activity of the skin secretions was tested using the well and paper disc methods. Results showed that skin secretions of F. limnocharis have antibacterial activity against S. pneumoniae multidrug resistant (MDR) SPN1307. The activity, however, was lower compared to that of chloramphenicol in both well and paper disc methods. On the other hand, skin secretions of L. macrodon failed to inhibit the growth of S. pneumoniae multidrug resistant (MDR) SPN1307. Molecular phylogenetic analysis was carried out on F. limnocharis based on DNA sequence of a partial fragment of mitochondrial cytochrome oxidase subunit I (COI) gene. Results showed that the frog F. limnocharis is closely related (97%) to Fejervarya sp from Bali. Skin secretions of F. limnocharis, therefore, has the potency to be developed as a source of antibacterial agents against S. pneumoniae multidrug resistant (MDR) SPN1307.
In Silico Analysis of Curcuma longa Against PCAF Histon Asetiltransferase Artha Vinsentricia; Djarot Sasongko Hami Seno; Maria Bintang
Current Biochemistry Vol. 2 No. 2 (2015)
Publisher : IPB University

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Abstract

Curcumin turmeric (C. longa) has been found capable of inhibiting p300/CBP associated factor (PCAF) histone asetyltransferase (HAT) as a cancer biomarker. However, the molecular mechanism of inhibition is unkown. This study is aimed to analyse the molecular inhibition mechanisms by in silico method. The analysis showed that curcumin’s Gibbs free energy (ΔG) was stable and capable of binding amino acid residues believed to be active site of PCAF HAT. Curcumin is predicted to be a PCAF HAT inhibitor, and further in vitro analysis is required.

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