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Microbiology Indonesia
Published by Perhimpunan Mikrobiologi Indonesia
ISSN : 19783477     EISSN : 20878575     DOI : -
Core Subject : Health, Science,
Biochemistry, Genetics & Molecular Biology Immunology & microbiology Medicine & Pharmacology
Microbiology Indonesia provides a unique venue for publishing original researches in microbiology (espesially from Indonesian reseachers), and ensures that authors could reach the widest possible audience. Microbiology Indonesia publishes a wide range of research disciplines on bacteria, archaea, fungi, protozoa, and virus as well as biotechnology related to microbiology. Topics include (but are not limited to): -methods in microbiology, -bioprocess, -environmental microbiology, -food microbiology, -plant-microbe interaction, -animal-microbe interactions, -microbial community, -microbial genetics, -virology, -comparative and functional microbial genomics, -and gene expression in microbes.
Arjuna Subject : Imunologi dan Mikrobiologi (semua kategori) - Mikrobiologi dan Bioteknologi Terapan
Articles 398 Documents
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Potential MGPB In Optimizing Paddy Straw Mushroom (Volvariella volvacea WW-08) Growth WINDI SILVANI JEMSI; I NYOMAN PUGEG ARYANTHA
Microbiology Indonesia Vol. 11 No. 2 (2017): Juni 2017
Publisher : Indonesian Society for microbiology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (839.638 KB) | DOI: 10.5454/mi.11.2.2

Abstract

Paddy straw mushroom (Volvariella volvacea) contains high protein content and delicious flavor, makes it highly demand each year. Production of V.volvacea does not merit the requirements due to its limited production. Therefore, approach in increasing production using mushroom growth promoting bacteria (MGPB) are needed. This study aims to obtain MGPB isolate as potential agent to increase V. volvacea strain WW-08 growth. This is experimental research in laboratory that consisted of indigenous bacteria isolation, MGPB screening with dual culture, MGPB inoculum optimization, molecular identification of selected MGPB using 16S rRNA, protein profiling with SDS-PAGE, and fruting body production. Indigenous bacteria obtained from growth medium were 58 isolate, and W34 bacteria at concentration of 106 sel/ml showed most significant result on micellium growth. Sequence of 16S rRNA region showed W34 bacteria is Bacillus cereus. Visualization of SDS-PAGE showed new protein in result of interaction between Bacillus cereus and V. volvacea strain WW-08 with molecule weight of 17kDa. Average of fruting body of V. volvacea strain WW-08 in treatment of B. cereus harvested for 7 days, was 240.19g, whereas without treatment of B. cereus was 82.15g. These findings indicate treatement of B. cereus strain W34 increase V. volvacea WW-08 growth by 300%.
ITA registration form and back cover Is Helianti
Microbiology Indonesia Vol. 10 No. 1 (2016): March 2016
Publisher : Indonesian Society for microbiology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1369.351 KB) | DOI: 10.5454/mi.10.1.%p

Abstract

ITA registration form and back cover
Microbiology Indonesia Vol. 9 No. 4 (2015): December 2015
Publisher : Indonesian Society for microbiology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1786.41 KB) | DOI: 10.5454/mi.9.4.%p

Abstract

ITA registration form and back cover Is Helianti
Microbiology Indonesia Vol. 10 No. 2 (2016): June 2016
Publisher : Indonesian Society for microbiology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (933.276 KB) | DOI: 10.5454/mi.10.2.%p

Abstract

Antibacterial Potentiality Testing of Pineapple Core Extract (Ananas comosus (L.) Merr) Against Methicillin-resistant Staphylococcus aureus (MRSA) with Vancomycin Control
Microbiology Indonesia Vol. 11 No. 3 (2017): September 2017
Publisher : Indonesian Society for microbiology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (502.473 KB) | DOI: 10.5454/mi.11.3.3

Abstract

Staphylococcus aureus is one of major pathogens causing serious infection. Penicillin antibiotic is one of therapies against Staphylococcus infection. However, inadequate and irrational use of antibiotic causes resistance and emerges incidence of methicillin-resistant Staphylococcus aureus (MRSA). Herbal medicine from pineapple core extract is hopefully can reduce the incidence of antibiotics resistance. This research was conducted to investigate the antibacterial activity of pineapple core extract against MRSA.This research is true experimental with post-test controlled group design. Pineapple core was extracted by maceration method. Ethanol extract of pineapple core is dissolved with sterilized water and obtained concentration of 750, 500, 250, 187.5, 125, and 62.5 mg/ml. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were determined by broth dilution test with five replications. Vancomycin was used as control group. MIC was observed visually by comparing turbidity of solutions after incubation at 37oC for 24 hours. Then these solutions were cultured on nutrient agar plates at 37oC for 24 hours. MBC was observed visually by inspecting the presence of bacterial colonies growth.The Minimum Inhibitory Concentration (MIC) could not be determined due to no turbidity changes. Vancomycin cannot be used for determining MIC. Cultures on nutrient agar plates had no colonies growth in concentrations of 750 and 500 mg/ml. Thus, the Minimum Bactericidal Concentration (MBC) was 500 mg/ml.Pineapple core extract contains bromelain, flavonoid, saponin, and tanin, which have antibacterial effect. In summary, pineapple core extract has antibacterial effect against methicillin-resistant Staphylococcus aureus (MRSA) with MBC of 500 mg/ml.
Resistance Test on Aeromonas hydrophila Isolated from African Catfish (Clarias gariepinus) Against Some Antibiotics Groups
Microbiology Indonesia Vol. 11 No. 2 (2017): Juni 2017
Publisher : Indonesian Society for microbiology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (472.278 KB) | DOI: 10.5454/mi.11.2.5

Abstract

Aeromonas hydrophila is a type of bacteria causing Motile Aeromonads Septicemia (MAS) disease, which infects freshwater fish, including African catfish, and leads to death as well as huge losses to farmers. This research aims to determine the resistance status of various antibiotic classes in A. hydrophila bacteria isolated from African catfish. Bacterial isolates of A. hydrophila were taken from the liver and kidneys of infected African catfishes obtained from Parung, Bogor. Characterization of the bacteria was carried out based on colony morphology and biochemical properties. Meanwhile, bacterial resistance test was conducted using antibiotic disks with Kirby-Bauer method. Based on colony morphology and biochemical properties, the characterization results indicated that the bacterial isolates tested were A. hydrophila. Further examination of the antibiotic resistance test showed that the bacteria were resistant to penicillin antibiotics and macrolides. Future researches are expected to use molecular identification for A.hydrophila bacteria mutant to known the DNA base. 
Effect of Tempeh Supplementation on the Profiles of Human Intestinal Immune System and Gut Microbiota
Microbiology Indonesia Vol. 11 No. 1 (2017): March 2017
Publisher : Indonesian Society for microbiology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (498.693 KB) | DOI: 10.5454/mi.11.1.2

Abstract

Tempeh is a traditional fermented soybean product from Indonesia. Although tempeh is consumed as daily menu in Indonesia, its nutrigenomic study employing human has not been reported yet. On the other hand, our study in mice showed that tempeh could enhance immune system, especially by increasing secretory immunoglobulin A production in ileum and colon. Tempeh was also found to be potential in modulating the composition of gut microbiota. Therefore, the objective of this study was to analyze the impact of tempeh supplementation on the profiles of human intestinal immune system and gut microbiota analysis. This experimental design was reviewed and approved by the ethics committee. A total of 16 participants, comprising of each 8 healthy females and males, aged between 20 and 23 were recruited to this study. The volunteers consumed 200 mL milk from day 1-8 followed by consumption of 100 grams steamed tempeh each day from day 9-24. Fecal samples, which were taken on day 9 and 25, were analyzed with half sandwich ELISA for IgA enumeration while fecal samples, which were taken on day 0, 9, and 25, were analyzed for Akkermansia muciniphila enumeration employing quantitative real time PCR. The result of this study suggesting that tempeh supplementation might act as paraprobiotic and slimming agent since tempeh enhanced production of IgA and increased the number of A. muciniphila in human intestinal tract.
Molecular Identification of Endospore-Forming Rhizobacteria from Organic Cabbage Farm Potential as Biocontrol against Phytopathogen Xanthomonas campestris
Microbiology Indonesia Vol. 10 No. 3 (2016): September 2016
Publisher : Indonesian Society for microbiology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (802.67 KB) | DOI: 10.5454/mi.10.3.4

Abstract

Rhizobacteria are rhizosphere competent bacteria that colonize and proliferate in all the ecological niches found on the plant roots at all stages of plant growth, in the presence of a competing microflora. These bacteria are potential as biological control  agent to inhibit the growth of phytopathogen. The aim of this study was to isolate endospore-forming rhizobacteria from cabbage farm and determine its ability as biocontrol against Xanthomonas campestri, a pathogen causing black rot on cabbage. The methods used consisted of isolation, antibacterial activity test, biochemical characterization and molecular identification. Fourteen isolates of endospore-forming rhizobacteria were obtained from cabbage farming. Isolate K.9 had the highest ability to inhibit the growth of X. campestri. Based on molecular characterization by sequence analyses of 16S rRNA, isolate K9 had 97% homology with Bacillus cereus strains BF15.
Application of Response Surface Method in Optimization of Medium Composition for Xylanase Production by Bacillus halodurans CM1 in Submerged Fermentation SARA GUSTIA WIBOWO; IS HELIANTI; ANI SURYANI; BUDIASIH WAHYUNTARI
Microbiology Indonesia Vol. 10 No. 3 (2016): September 2016
Publisher : Indonesian Society for microbiology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (708.837 KB) | DOI: 10.5454/mi.10.3.5

Abstract

A two level factorial design was performed to optimized xylanase production by alkalothermophilic Bacillus halodurans CM1 using response surface method. The variables involved in this experiment were carbon (X), 1 nitrogen source (X) concentration, and pH (XCorn cob and fish powder were use as carbon and nitrogen source 2 3 respectively. Statistical analysis of the experimental results in the range studied, only carbon source gave significant effect on xylanase production.  A second-order model was proposed to represent the enzyme activity as a function of xylan concentration (X) and pH (X).  The optimum corn cobs concentration was 4.37% (w/v), 1 3 fish powder P concentration was 1.75% (w/v) and pH 9. These conditions were tested and validated experimentally since the maximum growth rate achieved with these parameters, and the highest xylanase activity.
Cloning and Expression of Small Hepatitis B Surface Antigen (sHBsAg) In Hansenula polymorpha
Microbiology Indonesia Vol. 10 No. 4 (2016): December 2016
Publisher : Indonesian Society for microbiology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (422.777 KB) | DOI: 10.5454/mi.10.4.1

Abstract

Recombinant small hepatitis B surface antigen (sHBsAg) is used as a vaccine component to prevent hepatitis B virus infection. As an attempt to produce local recombinant sHBsAg, a PCR-amplified DNA fragment encoding Indonesia sHBsAg which belongs to B genotype and adw2 subtype was cloned into Hansenula polymorpha expression vector pHIPX4 by using recombination method. The resulted pHIPX4-sHBsAg was integrated into the alcohol oxidase (AOX) locus of H. polymorpha NCYC495 genome and the sHBsAg expression was regulated under the control of H. polymorpha AOX promoter. H. polymorpha NCYC495 carrying the sHBsAg coding sequence was grown in mineral medium and methanol 0.5% (v/v) was added to induce the expression of recombinant sHBsAg. The expression of sHBsAg was detected by HBsAg diagnostic kit test, ELISA, and Western blot analysis.

Page 14 of 40 | Total Record : 398

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