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Microbiology Indonesia

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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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Antimicrobial Activity of Melinjo Seed and Peel Extract (Gnetum gnemon) Against Selected Pathogenic Bacteria ADOLF JAN NEXSON PARHUSIP; AZIS BOING SITANGGANG
Microbiology Indonesia Vol. 5 No. 3 (2011): September 2011
Publisher : Indonesian Society for microbiology

Melinjo (Gnetum gnemon L.) is an Indonesian native plant which has not been widely accepted due to its limited utilization. Mainly, melinjo is consumed as an ingredient to make a vegetable dish or as raw material of ‘emping’. The purpose of this research was to study the antimicrobial activity of the melinjo seed extract and melinjo peel extract. In this study, extraction from melinjo seed and peel was conducted by maceration using three kinds of solvent: ethanol, ethyl acetate and hexane for 24 h at room temperature. The results showed that none of the melinjo extracts (concentration from 5% - 25% w/v) could inhibit the growth of Aspergillus flavus IPBCC 88.030; whereas for Bacillus cereus ATCC 10876, Staphylococcus aureus ATCC 25953, and Enterobacter aerogenes ATCC 13048 there was efficient inhibition by 5% (w/v) of melinjo seed-ethanol extract. The minimal inhibitory concentration (MIC) value of melinjo extract was ranged from 0.26 μg mL-1 to 1.46 μg mL-1, whilst the minimal bactericidal concentration (MBC) value was ranged from 1.02 μg mL-1 to 6.04 μg mL-1. The inhibitory capacity of extract had a similar level as compared to 10 ppm penicillin G on B. cereus ATCC 10876 as well as on S. aureus ATCC 25953. Furthermore, as compared to 10 ppm streptomycin, the inhibitory capacity of the extract was equal for the all tested bacteria. Cell wall deformation was observed using SEM, and confirmed by the presence of ions (Ca2+ and K+) outside of the cells, detected by means of AAS.

Polydnavirus Symbiont Detected from Calyx TissuesWasps of Three Lepidopteran Cabbage Pests ENDANG SRI RATNA; DAMAYANTI BUCHORI; TEGUH SANTOSO
Microbiology Indonesia Vol. 5 No. 3 (2011): September 2011
Publisher : Indonesian Society for microbiology

Parasitoid wasps are a potent biological control agent in the field. The successful of parasitism are determined by several factors, among them by the presence of polydnavirus (PDV) symbiont that could break down the immunity mechanism of its host.We explored the existence of PDV on wasps , Snellenius manilae, Cotesia sp., and Diadegma semiclausum a group of parasitoid on cabbage pests in Indonesia. Morphological study of PDV was done by preparing ultrasectioned calyx tissues and negative stained of extracted calyx fluid of adult parasitoids. Virogenic stroma resulted from differentiated calyxepithelial cells appeared on all three wasps. Bracovirus and ichnovirus were detected from the calyx tissues of S. manila and D. semiclausum . The electron dense materials of PDV were distributed within nucleus and vacuolated cytoplasm of calyx cells, calyx lumen and on the surface of eggs wasps. PDVs particles were also shown in the extracted calyx fluid of Cotesia sp.

Geminiviruses Associated with the Weed Species Ageratum conyzoides, Centipeda minima, Porophyllum ruderale, and Spilanthes iabadicensis from Java, Indonesia RIKA MELIANSYAH; SR HENDRASTUTI HIDAYAT; KIKIN HAMZAH MUTAQIN
Microbiology Indonesia Vol. 5 No. 3 (2011): September 2011
Publisher : Indonesian Society for microbiology

Geminivirus has a wide host range including cultivated plants and weeds. Infected weeds may play an important role in disease epidemic. Unfortunately, little is known about weeds species that may serve as alternative host for Geminivirus. This research was conducted to identify Geminivirus on weeds around chili pepper field to study their potential role as virus reservoir. Field surveys were conducted to chilli pepper growing area inWest and Central Java Provinces, and The Special Province of Yogyakarta during 2009 to collect symptomatic weed plants. Geminivirus infection was detected using PCR technique from 9 weed samples, i.e. 5 samples Ageratum conyzoides from Bogor (AgrBgr), Sukabumi (AgrSkm), Magelang (AgrMgl), Sleman (AgrJgy), and Garut (AgrGrt); Centipeda minima from Magelang (CtpMgl); A. boehmerioides from Sleman (AcpJgy); Porophyllum ruderale from Bogor (PrlBgr); Spilanthes iabadicensis from Magelang (SplMgl). Further genetic analysis showed that those geminiviruses can be differentiated into 2 clusters, showing the possible genetic differences among them. They neither have a close relationship with other geminiviruses published earlier in the GenBank, indicating weed infecting collected Geminivirus in this study is possibly a distinct Geminivirus.

Induction of Trichosanthes cucumerina anguina L. var (L. Haines) Hairy Roots Using Agrobacterium rhizogenes ATCC 15834 for Production of Bioactive Protein . CHURIYAH; GUSTAF ADOLF WATTIMENA; BAMBANG PONTJO PRIYOSOERYANTO
Microbiology Indonesia Vol. 5 No. 3 (2011): September 2011
Publisher : Indonesian Society for microbiology

In the recent years, hairy roots have become a useful model system for the study of bioactive secondary molecule production and protein expression. Hairy roots of Trichosanthes cucumerina var. anguina were obtained by direct inoculation of the plantlet with Agrobacterium rhizogenes ATCC 15834 strain agropine. Six root clones of Trichosanthes cucumerina var. anguina hairy roots TH1, TH2, TH3, TH4, TH6, and TH8 were obtained from the induced hairy roots. The hairy root proteins were extracted with phosphate buffer saline, then fractionated by ammonium sulphate precipitation (80%), dialysis, and gel filtration. The toxicity of the proteins was analyzed using brine shrimp lethality test followed by cytotoxicity test (3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide assay) using HeLa and K-562 cancer cell line. The TH2 root clone showed the highest protein yield (0.83%) and most toxic on BSLT with Lethal Concentration 50 was 5.76 μg mL-1. PCR analysis indicated the integration of rolB gene to the genome of TH2 root clone which was showed by a DNAband of 780 bp on the electrophoretic agarose gel. Protein fractionation of the TH2 root clone resulted in four fractions, one of which the-TH2-3 protein fraction revealed the highest yield (0.29%) and toxicity on BSLT with LC50 up to 0.92 μg mL-1 . The Cytotoxicity test of the TH2 protein and TH2-3 protein fraction indicated that both of proteins inhibited the proliferation of Hela and K-562 cell withLC up to 49 μg mL-1.

Fusarium Species Associated with Corm Rot of Taro in Bogor . WIDODO; . SUPRAMANA
Microbiology Indonesia Vol. 5 No. 3 (2011): September 2011
Publisher : Indonesian Society for microbiology

In Bogor-West Java, corm rot disease of taro has devastated in many cropping areas and caused yield losses up to 70%. During preliminary studies, Fusarium species were constantly recovered when diseased materials, rotten corms and discolored petioles were incubated. The objectives of this study was to identify the Fusarium species associated with the corm rot disease in Bogor and determine their pathogenicity and hosts range. Samples were collected from 40 diseased corm samples taken in 9 sub-districts of Bogor. Two species, viz, Fusarium solani and F. oxysporum were identified based on the morphological characteristics. Among 40 Fusarium isolates recovered in this study, 70% were Fusarium solani and 30% were F. oxysporum. F. solani could infect to all tested edible Araceae , while F. oxysporum was only pathogenic to Colocasia esculenta. Both species of Fusarium did not cause any symptoms when inoculated on selected ornamental and legume crops. These results gave the indication that F. solani was probably pathogenic only to edible Araceae, but further inoculation assay on living taro plants are necessary to carry out in order to clarify this result.

Characterization of a New Thermoalkalophilic Xylanase-Producing Bacterial Strain Isolated from Cimanggu Hot Spring,West Java, Indonesia
Microbiology Indonesia Vol. 5 No. 3 (2011): September 2011
Publisher : Indonesian Society for microbiology

Alkalophilic bacteria and their enzymes are important for industrial applications. Therefore, finding out new strains of alkalophilic bacteria from Indonesian microbial diversity is still required. In this study, a thermoalkalophilic bacterium was isolated from sediment of local hot spring, Cimanggu,West Java. The temperature of the spot was 60 °C and the pH was 8. The bacterium could live at pH 11 and temperature 55 °C, and produced xylanase that have optimal activity at alkaline pH 9 and high temperature 70 °C. Based on the analyses of 16S rRNA sequence similarity and biochemical characteristics, this strain was clustered into the same group of Bacillus halodurans species with 99% identity to Bacillus halodurans C-125. The isolate also showed other enzyme activities such as amylase, protease, and gelatinase, promising its potential use as an industrial enzymes producer.

Isolation and Characterization of Chitinolytic Bacteria and Their Potential to Inhibit Plant Pathogenic Fungi DWI SURYANTO; NETTI IRAWATI; ERMAN MUNIR
Microbiology Indonesia Vol. 5 No. 3 (2011): September 2011
Publisher : Indonesian Society for microbiology

A study on the isolation and characterization of chitinolytic bacteria and their potential to inhibit plant pathogenic fungi has been done. The bacteria were isolated from the soil of Karo, Langkat, and Bangka, Sumatra. Ganoderma boninense, Fusarium oxysporum, and Penicillium citrinum of the stock cultures in Laboratory of Microbiology Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara were used for growth inhibition assay by the isolated bacteria. KR05 and LK08 shared similar morphological and physiological characters; like wise, KR07 shared property similarities with BK08. All bacterial isolates inhibited the growth of G. boninense F. oxysporum , and P. citrinum at a different extent. LK08 showed the highest inhibition rate followed by BK07 and BK09. However, P. citrinum was inhibited more by BK07 and BK09. The crude enzyme preparation of the latter isolate exhibited the highest chitinase activity. The result suggested that their swarming activity seemed to contributed to inhibition of fungal growth.

Stability of Viable Counts of Lactic Acid Bacteria during Storage of Goat Milk Soft Cheese WINIATI PUDJI RAHAYU; FERI KUSNANDAR; WIDYA EKA PRAYITNO
Microbiology Indonesia Vol. 5 No. 4 (2011): December 2011
Publisher : Indonesian Society for microbiology

The use of goat milk is limited in Indonesia due to lack of good milking practices resulted in disliked goaty smell. One of the method to eliminate this off flavor is by processing the goat milk into soft cheese. The aim of this research was to study the stability of viable starter lactic acid bacteria cultures (Lactobacillus acidophilus FNCC-0051 and L. casei FNCC-0090) during storage of goat milk soft cheese. Three batches of goat milk soft cheeses were produced with different starter cultures L. acidophilus FNCC-0051 (5.0 x 106 cfu mL-1); L. casei FNCC-0090 (5.0 x 106 cfu mL-1); and the mixture of L. acidophilus FNCC-0051 (2.5 x 106 cfu mL-1) and L. casei FNCC-0090 (2.5 x 106 cfu mL-1). The goat milk cheeses had white color and soft. The viable lactic acid bacteria in the goat milk soft cheese reached 109 cfu g-1, which was stable for 8 weeks at 5 °C. Panelists liked goat milk soft cheeses, especially in term of its aroma. The specific aroma produced could mask the disliked goaty smell.

Selection of Yeasts Antagonists as Biocontrol Agent of Mango Fruit Rot caused by Botryodiplodia theobromae DWI SUGIPRIHATINI; SURYO WIYONO; . WIDODO
Microbiology Indonesia Vol. 5 No. 4 (2011): December 2011
Publisher : Indonesian Society for microbiology

Fruit rot caused by Botryodiplodia theobromae is one of the most important post harvest disease of mango in Indonesia. Study on biological control on the disease is required to develop environmentally-sound control technology. The research objectives were to study the potency of yeasts in controlling post harvest mango disease i.e. fruit rot caused by B. theobromae and mechanism involve in the biocontrol. Total yeast isolates used for screening were twenty one, four from collection of Plant Clinic of Institut Pertanian Bogor, and twenty one isolated from healthy mango skin. All of yeast isolates were characterized and identified using BIOLOG. Bioassay on antagonistic activity of yeasts against fruit rot, in-vitro dual culture test and chitinolytic activity were carried out. Cryptococcus albidus var. aerius WSW1, Pichia guilliermondii K1, and Debaryomyces hansenii K12 were the three most effective antagonistic yeasts against B. theobromae with effectiveness of 70.83%, 45.83%, 37.50% respectively. In vitro bio-assay showed that C. albidus var. aerius WSW1, C. albidus WSW2, C. albidus K6, C. terreus YSW1, Candida edax OSW1, Candida edax K13, and Cryptococcus luteolus K2 had high antibiosis activity. Biocontrol activity of tested yeasts against fruit rot of mango did not correlate to its antibiosis and chitinolytic activity

Isolation and Identification of Emestrin from Emericella nidulans and Investigation of Its Anticancer Properties MUHAMMAD NURSID; EKOWATI CHASANAH; . MURWANTOKO; SUBAGUS WAHYUONO
Microbiology Indonesia Vol. 5 No. 4 (2011): December 2011
Publisher : Indonesian Society for microbiology

The research to isolate, identify and investigate of anticancer properties of active compound produced by Emericella nidulans marine fungus has been done. Active compound was isolated from mycelium extract of the fungus. The molecular formula of active compound was established as C27H21N2O10S2 by LC-ESI-ToF-MS (m/z 597.1105 [M – H]-. Elucidation of molecular structure using FT-IR, LC-ESI-ToF-MS, 1H-NMR, 13C-NMR, and DEPT 135˚ showed that the active compound was emestrin. Emestrin was found to have cytotoxic effect against T47D, HepG2, C28, and HeLa but it was not too toxic against Vero cells with IC50 value of 1.8 µg mL-1, 4.2 µg mL-1, 2.6 µg mL-1, 13.8 µg mL-1, and 260.9 μg mL-1, respectively. Base on the cell cycle analysis by using flow cytometry, emestrin treatment at concentration of 1.0 μg mL-1 induced cell-cycle arrest in G0/G1 phase whereas at concentration of 3.0 μg mL-1, a sub-population of cells (sub G1) appeared. The apoptosis assay by using Annexin-V-FLUOS revealed that most of T47D cell treated with the compound at 1.0 and 3.0 μg mL-1 underwent apoptosis (83.6% and 92.6%, respectively. This anticancer activity of emestrin may be related to the unique of the epithiodioxopiperazine moiety with internal disulphide bond of this compound.

Page 33 of 40 | Total Record : 398

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Iman Rusmana

Contact Email rusmana13@yahoo.com

Phone +62217560536

Journal Mail Official microbiology.indonesia@gmail.com

Editorial Address kPERHIMPUNAN MIKROBIOLOGI INDONESIA (SeKretariat PERMI), Gedung 10.2 Indonesian Life Sciences Center (ILSC), Zona Bisnis Teknologi Puspiptek, Jalan Raya Serpong - Bogor Gunung Sindur, Jawa Barat 16340, Indonesia. Email: microbiology.indonesia@gmail.com

Location Kota tangerang, Banten INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Iman Rusmana

Contact Email
rusmana13@yahoo.com

Phone
+62217560536

Journal Mail Official
microbiology.indonesia@gmail.com

Editorial Address
kPERHIMPUNAN MIKROBIOLOGI INDONESIA (SeKretariat PERMI), Gedung 10.2 Indonesian Life Sciences Center (ILSC), Zona Bisnis Teknologi Puspiptek, Jalan Raya Serpong - Bogor Gunung Sindur, Jawa Barat 16340, Indonesia. Email: microbiology.indonesia@gmail.com

Location
Kota tangerang,

Banten

INDONESIA