Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

Indonesian Journal of Biotechnology

ijbiotech
Website

Published by Universitas Gadjah Mada

ISSN : 08538654 EISSN : 20892241 DOI : -

Core Subject : Science,

Biochemistry, Genetics & Molecular Biology Immunology & microbiology Materials Science & Nanotechnology

The Indonesian Journal of Biotechnology (IJBiotech) is an open access, peer-reviewed, multidisciplinary journal dedicated to the publication of novel research in all aspects of biotechnology, with particular attention paid to the exploration and development of natural products derived from tropical—and especially Indonesian—biodiversity. IJBiotech is published biannually and accepts original research articles featuring well-designed studies with clearly analyzed and logically interpreted results. A strong preference is given to research that has the potential to make significant contributions to both the field of biotechnology and society in general.

Arjuna Subject : -

Articles 17 Documents

1 2

Search results for , issue "Vol 17, No 1 (2012)" : 17 Documents clear

Cloning and Expression of ORF124 Koi Herpesvirus as a Vaccine ., Murwantoko; Pratiwi, Rarastoeti; Kawaichi, Masashi
Indonesian Journal of Biotechnology Vol 17, No 1 (2012)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (226.702 KB)

Koi herpesvirus (KHV) which also known as Cyprinid herpesvirus 3 (CyHV-3), Koi herpes-like virus, and carp interstitial nephritis gill necrosis virus (CNGV), caused signifi cant morbidity and mortality in koi and common carp (Cyprinus carpio). The case fatality rate of this disease is 80–100%. Glycoprotein has been used for vaccine development as sub unit vaccine against viruses. The aim of this research was to clone and express membrane glycoprotein ORF124 KHV as a candidate of recombinant vaccine. ORF124 KHV gene was successfully cloned into pBSKS and sequenced. Result showed that ORF124 KHV (isolate from Indonesia) had 100 % similarity with Cyprinid herpesvirus 3 strain TUMST1 (from Japan), 99% similarity with Koi herpesvirus strain KHV-U (from USA) and Koi herpesvirus strain KHV-I (from Israel). Prediction analysis of T and B cell epitopes showed that ORF124 KHV protein had 14 and 11 T cell epitopes (IAd, Rothbard/Taylor pattern),and had 10 B cell epitopes, suggested that the protein can be used as a vaccine candidate. ORF124 gene has been expressed in Escherichia coli under pET32-a(+)vector.

Cytotoxic Activity of Tegari (Dianella nemorosa Lam.) Methanol Extract Against HeLa Cells Karim, Aditya Krishar; ., Sismindari; Asmara, Widya; ., Istriyati
Indonesian Journal of Biotechnology Vol 17, No 1 (2012)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (177.336 KB)

Dianella nemorosa Lam. also known as tegari belonging to the Liliaceae family. This plant has been utilized for Papua traditional medicine as well as anticancer agent. This research examined potential cytotoxic activity of tegari (D. nemorosa) leaves extract against cervical cancer cell line (HeLa). Methanol extract was obtained by extracting the leaves powder using methanol. Extract was then applied into HeLa cell line to find out the cytotoxic activity. MTT [3-(4,5-dimetilthiazol-2-il)2,5-difeniltetrazolium bromida) assay was used to measure the cytotoxic activity. The result indicated that D. nemorosa leaves extract possessed cytotoxic activity in HeLa cell line with IC50 values were 685,69 µg/ml, 506,43 µg/ml and 708 µg/ml at the incubation period of 24, 48 and 72 h respectively. The strongest cytotoxic was showed by methanol extract incubated in 48 h.

Isolation and Purifi cation of Chitinase Bacillus sp. D2 Isolated from Potato Rhizosfer Margino, Sebastian; Behar, Chatarina; Asmara, Widya
Indonesian Journal of Biotechnology Vol 17, No 1 (2012)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (270.988 KB)

Potato Cyst Nematodes (Globodera rostochiensis) is one of the important potato’s pests and caused economic looses up to 70% in the several centrals of potato plantations in Indonesia. Potato Cyst Nematodes (PCN) shell component of egg shell containing chitin (inner layer) and vitelline/protein (outer layer), so the purpose of research was to fi nd out of chitin degrading bacteria for controlling of egg’s PCN by cutting of their life cycle. The results showed that Bacillus sp. D2 isolated from potato rhizosphere could produce extra cellular chitinase in the medium containing of 0.20% colloidal chitin and fermented for 72 hours. Result of chitinase purifi cation using ammonium sulphate precipitation and DEAE-Cellulose ion-exchange chromatography showed a specifi c activity 2691,052 U/mg and analyzing using SDS-PAGE 12.5% resulted in molecular weight 30 kDa. The apparent Km and Vmax of chitinase towards colloidal chitin were 2 mg/ml and 2.2 μg/h, respectively.  

-429 T/C and -374 T/A Polymorphisms in Receptor Advanced Glycation Endproducts (RAGE) gene in Type 2 Diabetic Patients with Diabetic Retinopathy at the Dr. Sardjito General Hospital Yogyakarta Djuma, Agustina Welhelmina; ., Sunarti; Hastuti, Pramudji
Indonesian Journal of Biotechnology Vol 17, No 1 (2012)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (212.796 KB)

Receptor of advanced glycation endproduct (RAGE) plays an important role in the pathogenesis of diabetic vascular complications, such as diabetic retinopathy. The interaction between the RAGE and advanced glycation end product (AGE) leads to oxidative stress and could result in cellular activation and infl ammation. The production of AGE occurs normally during aging but it increases in hyperglycemia condition. The objective of this research was to investigate the association between -429 T/C and -374 T/A polymorphisms in RAGE gene with the risk of diabetic retinopathy (DR) of type 2 diabetic patients in Javanese population. This was a case control study which consisted of 40 type 2 diabetic patients with DR as case subjects and 40 type 2 diabetic patients without DR (NDR) as control subjects. Genotyping of polymorphism was performed by PCR-RFLP. Chi-square test and odds ratio models were used to evaluate the association of both polymorphisms and DR risk and to examine 2-SNP haplotype of -429 T/C and -374 T/A polymorphisms in RAGE gene on DR. The genotype frequencies of -429 T/C polymorphism in RAGE gene in DR subjects were TT = 72.5% and TC/CC = 27.5%; while in NDR subjects were TT = 80% and TC/ CC = 20%, with p = 0.431. The allele frequencies of -429 T/C polymorphism in DR subjects were T = 83.7% and C= 16.3%, while in NDR subjects were T = 87.5% and C = 12.5%, with p = 0.499. The genotype frequencies of -374T/A polymorphism in RAGE gene in DR subjects were TT = 67.5%, TA = 32.5% while in NDR subjects were TT =82.5%, TA = 17.5%, with p = 0.121. In DR subjects, the frequencies of T and A were 83.7% and16.3%, while in NDR subjects the frequencies of T and A were 91.2 % and 8.8%, with p = 0.151. Odds ratios of -429 T/C polymorphism were 1.52 (95% CI = 0.54 – 4.29) for TC/CC genotype and 1.358 (95% CI = 0.56 – 3.31) for C allele. Odds ratios of -374 T/A polymorphism were 2.27 (95% CI = 0.79 – 6.49) for TA genotype and 2.02 (95% CI = 0.76 – 5.37) for A allele. χ2-value for 2-SNP haplotype was p = 0.127. The -374 T/A polymorphism in RAGE gene was a stronger risk factor of DR than -429 T/C polymorphism in RAGE gene. There were not signifi cantly different of frequencies of genotypes, allele, and two-SNP haplotype of -429 T/C and -374 T/A polymorphisms in RAGE gene between DR subjects and NDR subjects.

Human Origin Lactobacillus casei Isolated from Indonesian Infants Demonstrating Potential Characteristics as Probiotics in vitro ., Widodo; Taufiq, Tiyas Tono; Aryati, Ety; Kurniawati, Asih; Asmara, Widya
Indonesian Journal of Biotechnology Vol 17, No 1 (2012)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (214.461 KB)

The aim of this experiment was to isolate and identify Lactic Acid Bacteria (LAB) from infant faeces and subsequent evaluation of its potential probiotics. LAB was isolated from faeces of infants who consumed breast milk as the only source of diet on L-cysteine-supplemented MRS Agar, and incubated on 37oC for 48 hours. Colonies grew on this media were then identifi ed based on morphological, physiological and molecular approaches. Morphological and physiological identifi cations based on Gram staining, shape, motility, spore formation, catalase, CO2 and NH3 production, and the ability to grow on temperature at 10oC and 45oC. Molecular identifi cation based on the amplifi cation of 16S rRNA gene. The potential application of selected isolates for probiotics was evaluated based on the ability to grow on media with low pH and the addition of 0.5% bile salts, the ability to inhibit the growth of pathogenic Bacillus cereus and Eschericia coli, and in vitroadherence ability. On the basis of morphological, physiological and molecular analysis of 16S rRNA gene, it was concluded that the selected isolate 1AF was a strain of Lactobacillus casei. Evaluation of probiotic in vitro showed that 60.4% of cells were resistant to pH 2.0 for 90 minutes. Survival of isolate 1AF after growing at 0.5% bile salts was 70.8%. The selected isolate 1AF showed the ability to inhibit the growth of Eschericia coli and Bacillus cereus with inhibitory zone of 12.00±1,00 and 15.33±1.53 mm, respectively. In vitro study on the adherence value of isolate to solid plate was found at 46.5%. It is concluded that Lactobacillus casei isolate 1AF is a potential candidate as probiotics and subject to further in vivo evaluation.

Production and Optimization of Oleic Acid Ethyl Ester Synthesis Using Lipase From Rice Bran (Oryza sativa L.) and Germinated Jatropha Seeds (Jatropha curcas L.) by Response Surface Methodology Prastowo, Indro; Hidayat, Chusnul; Hastuti, Pramudji
Indonesian Journal of Biotechnology Vol 17, No 1 (2012)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (264.424 KB)

Recently, the fatty acid ethyl ester has been synthesized in place of fatty acid methyl ester since ethanol has been more renewable. In this research, oleic acid ethyl ester (OAEE) was synthesized using germinated jatropha seeds (Jatropha curcas.L) and rice bran (Oryza sativa) as source of lipase. The objective of the research was to optimize the synthesis conditions using Response Surface Methodology. Factors, such as crude enzyme concentration, molar ratio of oleic acid to ethanol, and the reaction time, were evaluated. The results show that lipase from germinated jatropha seeds had the hydrolitic and esterifi cation activity about 6.73 U/g and 298.07 U/g, respectively. Lipase from rice bran had the hydrolitic and esterifi cation activity about 10.57 U/g and 324.03 U/g, respectively. The optimum conditions of esterifi cation reaction using germinated jatropha seed lipase as biocatalyst were crude enzyme concentration of 0.31 g/ml, molar ratio of oleic acid to ethanol of 1 : 1.81, and reaction time of 50.9 min. The optimum conditions of esterifi cation reaction using rice bran lipase were crude enzyme concentration of 0.29 g/ml, molar ratio of oleic acid to ethanol of 1 : 2.05, and reaction time of 58.61 min. The obtained amounts of OAEE were 810.77 μmole and 626.92 μmole for lipases from rice bran and germinated jatropha seed, respectively.

Diversity of Dibenzofuran-Utilizing Bacteria Isolated by Direct-Plating and Enrichment Methods Prijambada, Irfan Dwidya; Widada, Jaka; Kusumaningtyas, Pintaka; Suryawan, Dhani
Indonesian Journal of Biotechnology Vol 17, No 1 (2012)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (160.616 KB)

The effect of enrichment bias on the diversity of Dibenzofuran (DBF)-degrading bacteria recovered from soil was evaluated by direct plating, plating after in-soil adaptation, and plating after batch culture enrichment. Among colonies appeared on Bushnell Haas agar with DBF as the sole carbon source, 119 colonies (49, 38, and 32 from direct plating, plating after in-soil adaptation, and plating after batch culture enrichment, respectively) were arbitrarily selected based on the appearance of the colonies. Total DNA were then extracted from the rest of the colonies and analyzed for their diversity using Ribosomal Intergenic Spacer Analysis (RISA). Number of DNA bands obtained from direct plating was higher than the ones obtained after in-soil enrichment and batch culture enrichment. The RISA bands obtained from direct plating were also found to be distributed more evenly than the ones obtained after in-soil enrichment and batch culture enrichment. Dominant bands were observed on RISA from samples obtained after in-soil enrichment and batch culture enrichment. Out of 119, only 9 isolates were consistently able to grow on Bushnell-Haas broth with DBF as the sole carbon source as indicated by broth turbidity. All of the isolates were obtained from soil samples which were enriched in a batch culture. Some of the isolates were able to degrade more then 80 % DBF in the minimal medium.

Identification of Protease Producing Halophilic Bacteria from Bledug KuwuMud Volcano Muhammad Saifur Rohman; Irfan Dwidya Prijambada; Yohanna Anisa Indriyani; Heri Hendrosatriyo
Indonesian Journal of Biotechnology Vol 17, No 1 (2012)
Publisher : Universitas Gadjah Mada

The objective of this research was to isolate and identify the halophilic bacteria from Bledug Kuwu-mudvolacano having an ability to produce proteolytic enzyme. From this work, 6 bacterial isolates were obtainedfrom mud and water samples using artificial sea water media after incubation at room temperature. Threeout of the 6 isolates (BKL-3, BKL-5, and BKA-1) were selected for further analysis. BKL-3, BKL-5 and BKA-1exhibited an ability to grow at salt concentration greater than 10%. BKL-3 could grow on media supplementedwith 15% of salt, meanwhile BKL-5 and BKA-1 could grow at 20% of salt, respectively. Furthermore, thoseisolates also exhibited proteolytic activity when they were grown on casein media. The phylogenetic analysisbased on the 16SrRNA gene sequences showed that the BKL-3 belong to the group of Bacillaceae, whilst BKL-5and BKA-1 isolates were relatively distance from the group of Halomonadaceae. Therefore, BKL-5 and BKA-1could be considered as the allegedly new species that were separated from Halomonadaceae

Cloning and Expression of ORF124 Koi Herpesvirus as a Vaccine M. Murwantoko; Dewi Nur'aeni Setyowati; Rarastoeti Pratiwi; Masashi Kawaichi
Indonesian Journal of Biotechnology Vol 17, No 1 (2012)
Publisher : Universitas Gadjah Mada

Koi herpesvirus (KHV) which also known as Cyprinid herpesvirus 3 (CyHV-3), Koi herpes-like virus,and carp interstitial nephritis gill necrosis virus (CNGV), caused signifi cant morbidity and mortality in koiand common carp (Cyprinus carpio). The case fatality rate of this disease is 80–100%. Glycoprotein has beenused for vaccine development as sub unit vaccine against viruses. The aim of this research was to clone andexpress membrane glycoprotein ORF124 KHV as a candidate of recombinant vaccine. ORF124 KHV gene wassuccessfully cloned into pBSKS and sequenced. Result showed that ORF124 KHV (isolate from Indonesia) had100 % similarity with Cyprinid herpesvirus 3 strain TUMST1 (from Japan), 99% similarity with Koi herpesvirus strain KHV-U (from USA) and Koi herpesvirus strain KHV-I (from Israel). Prediction analysis of T and B cellepitopes showed that ORF124 KHV protein had 14 and 11 T cell epitopes (IAd, Rothbard/Taylor pattern),and had 10 B cell epitopes, suggested that the protein can be used as a vaccine candidate. ORF124 gene hasbeen expressed in Escherichia coli under pET32-a(+)vector.

Cytotoxic Activity of Tegari (Dianella nemorosa Lam.) Methanol Extract Against HeLa Cells Aditya Krishar Karim; S. Sismindari; Widya Asmara; I. Istriyati
Indonesian Journal of Biotechnology Vol 17, No 1 (2012)
Publisher : Universitas Gadjah Mada

Page 1 of 2 | Total Record : 17

1 2

Filter by Year

2012 2012

Filter By Issues

All Issue Vol 30, No 3 (2025) Vol 30, No 2 (2025) Vol 30, No 1 (2025) Vol 29, No 4 (2024) Vol 29, No 3 (2024) Vol 29, No 2 (2024) Vol 29, No 1 (2024) Vol 28, No 4 (2023) Vol 28, No 3 (2023) Vol 28, No 2 (2023) Vol 28, No 1 (2023) Vol 27, No 4 (2022) Vol 27, No 3 (2022) Vol 27, No 2 (2022) Vol 27, No 1 (2022) Vol 26, No 4 (2021) Vol 26, No 3 (2021) Vol 26, No 2 (2021) Vol 26, No 1 (2021) Vol 25, No 2 (2020) Vol 25, No 1 (2020) Vol 24, No 2 (2019) Vol 24, No 1 (2019) Vol 23, No 2 (2018) Vol 23, No 1 (2018) Vol 22, No 2 (2017) Vol 22, No 1 (2017) Vol 21, No 2 (2016) Vol 21, No 1 (2016) Vol 20, No 2 (2015) Vol 20, No 1 (2015) Vol 19, No 2 (2014) Vol 19, No 1 (2014) Vol 19, No 1 (2014) Vol 18, No 2 (2013) Vol 18, No 2 (2013) Vol 18, No 1 (2013) Vol 18, No 1 (2013) Vol 17, No 2 (2012) Vol 17, No 2 (2012) Vol 17, No 1 (2012) Vol 17, No 1 (2012) Vol 16, No 2 (2011) Vol 16, No 2 (2011) Vol 16, No 1 (2011) Vol 16, No 1 (2011) Vol 15, No 2 (2010) Vol 15, No 2 (2010) Vol 15, No 1 (2010) Vol 15, No 1 (2010) Vol 14, No 2 (2009) Vol 14, No 2 (2009) Vol 14, No 1 (2009) Vol 14, No 1 (2009) Vol 13, No 2 (2008) Vol 13, No 2 (2008) Vol 13, No 1 (2008) Vol 13, No 1 (2008) Vol 12, No 2 (2007) Vol 12, No 2 (2007) Vol 12, No 1 (2007) Vol 12, No 1 (2007) Vol 11, No 2 (2006) Vol 11, No 2 (2006) Vol 11, No 1 (2006) Vol 11, No 1 (2006) Vol 10, No 2 (2005) Vol 10, No 2 (2005) Vol 10, No 1 (2005) Vol 10, No 1 (2005) More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kab. sleman,

Daerah istimewa yogyakarta

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name -

Contact Email -

Phone -

Journal Mail Official -

Editorial Address -

Location Kab. sleman, Daerah istimewa yogyakarta INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kab. sleman,

Daerah istimewa yogyakarta

INDONESIA