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Jurnal Riset Biologi dan Aplikasinya
Published by Universitas Negeri Surabaya
ISSN : -     EISSN : 26559927     DOI : 10.26740/jrba
Core Subject : Health, Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology Medicine & Pharmacology
Jurnal Riset Biologi dan Aplikasinya is a peer-reviewed journal that strives to provide scientific information on the research results which focused on biological science (Ecology, Animal and Botanical Systematics, Microbiology, Zoology, Botany, Biotechnology, and Genetics and Evolution) and biological education (Innovation of Biology Learning, Assessment and Evaluation in Biology, and Media of Biology)
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ecology, Evolution, Behavior and Systematics
Articles 6 Documents
 1 
Search results for , issue "Vol. 4 No. 1 (2022)" : 6 Documents clear
Beta-Glucosidase 1 (bgl1) Gene Analysis in Mutant and Wild-type of Penicillium sp. ID10-T065 Syafriana, Vilya; Nuswantara, Sukma; Mangunwardoyo, Wibowo; Lisdiyanti, Puspita
Jurnal Riset Biologi dan Aplikasinya Vol. 4 No. 1 (2022)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrba.v4n1.p1-8

Abstract

In the previous study, Penicillium sp. ID10-T065 has been mutated using ultraviolet (UV), ethyl methyl sulfonate (EMS) and the combination of UV-EMS to increase Beta-glucosidase (bgl) activity. There were three mutants selected, UV13 (UV mutant), EM31 (EMS mutant), and UM23 (UV-EMS mutant). This study examined the mutations in the bgl gene encoding (bgl1) as well as sequence differences between mutants and wild-type of Penicillium sp. ID10-T065. The gene analysis was performed by PCR amplification and sequencing of the bgl1 gene. The results of bgl1 gene sequences (600 bp) from mutants were aligned with the wild-type, it was discovered that there were base alterations from position 2025 to 2050. Mutant UV13 showed the highest base alterations (7 bases) which occurred at position 2027 (T?C); 2036 (T?G); 2040 (T?G); 2047 (G?C); and 2048-2050 (TTG?GGA). Mutant EM31 showed alterations in five bases at positions 2034 (G?A), 2036 (T?G), 2037 (G?C), 2044 (G?C), and 2047 (G?T). Mutant UM23 showed two base alterations at position 2025 (T?A) and 2037 (G?C). UV irradiation and EMS mutation resulted in transition and transversion DNA, whereas the combination of UV-EMS mutation resulted in transversion mutations. Base alterations in UV13 and EM31 mutants, causing missense and silent mutation, while in UM23 mutant only silent mutations occur. The bgl1 gene analysis showed that mutation using UV light was more effective than using EMS or a combination of UV-EMS in Penicillium sp. ID10-T065.
In Silico Study of Secondary Metabolites in Dendrobium spp. as SARS-CoV-2 Antivirus on Main Protease (Mpro) Kinasih, Anggiresti; El Hakim, Alim; Arum, Dyah Ayu Puspita; Ramadhani, Aulia Noor; Semiarti, Endang
Jurnal Riset Biologi dan Aplikasinya Vol. 4 No. 1 (2022)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrba.v4n1.p19-25

Abstract

Infection and deaths cases by SARS-CoV-2 still increase and have not decreased significantly. Main protease (Mpro) is playing an important role in the replication of SARS-CoV-2 life cycle and causes of rapid transmission. Natural compounds are potential to be antiviral candidates with high bioavailability and low cytotoxicity. Orchids of Dendrobium genus have high diversity in Indonesia. Dendrobium has been used as traditional Chinese medicine and contains a group of secondary metabolites with antiviral activity. This study aimed to determine the potential of secondary metabolites of Dendrobium orchids as antiviral candidates against Mpro SARS-CoV-2 with in silico molecular docking. Secondary metabolites obtained from the KNApSAck and PubChem act as ligands. N3 inhibitors as native ligands were obtained from the RCSB. Mpro SARS-CoV-2 (6LU7) as a target macromolecule. Molecular docking was carried out using the online Covid-19 Docking Server using AutoDock Vina device. The most negative binding affinity value for each ligand compared to the native ligand binding affinity. Visualization with Discovery Studio software has been used to observe the protein amino acid residues contact for each ligand. The binding affinity of the native ligand inhibitor N3 is -7.5 kcal/mol. Based on the results of Mpro docking, three phytochemicals from Dendrobium spp., i.e., dendrocandin B, denthyrsinone, and denthyrsinol compounds have binding affinities of -7.7 kcal/mol, -7.9 kcal/mol, and -8.1 kcal/mol, respectively. It can be concluded that in Dendrobium orchid, denthyrsinol has the highest chance of binding so it has the potential to inhibit the Mpro SARS-CoV-2 activity.
Araceae Floristic and Potential Study in Bogor Botanical Gardens, West Java, Indonesia Asharo, Rizal Koen; Novitasari, Ayu; Azizah, Sri Devi Nur; Saraswati, Rahadian Ajeng; Setyaningsih, Fani; Apriliani, Puput; Priambodo, Rizky; Pasaribu, Pinta Omas; Rizkawati, Vina; Usman, Usman
Jurnal Riset Biologi dan Aplikasinya Vol. 4 No. 1 (2022)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrba.v4n1.p9-18

Abstract

Bogor Botanical Gardens is a conservation area that assists the preservation of flora in Indonesia, including the Araceae. Araceae is often used by the public as medicine, food sources, and ornamental plants. Therefore, the Araceae is often used as an interesting research object and conservation efforts have commenced maintaining its sustainability. The purpose of this research was to determine the species of living Araceae and the potential possessed by each living Araceae species in the conservation area of the Bogor Botanical Gardens. This research was conducted on 8-9 June 2021 to determine the diversity and potential of the Araceae in Bogor Botanical Gardens. The method used in this research is the exploring method and data analysis using descriptive method. The result of this research revealed there were 60 species of Araceae consisting of 25 genera. The genera with the highest number of species are Philodendron. Two species of them are Araceae which has a habitat in the waters. A total of 33 species are terrestrial and 25 are epiphytic plants. Araceae have many potentials, such as food, aromatic, medicine, flavoring, animal feed, and ornamental plants. More than 50% of the Araceae species were used as ornamental plants.
Antibacterial Activity of Garlic Added to Tempeh against Bacillus sp. and Escherichia coli Prasetya, Adelia; Dewi, Lusiawati; Pramana Situmorang, Risya
Jurnal Riset Biologi dan Aplikasinya Vol. 4 No. 1 (2022)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrba.v4n1.p34-41

Abstract

Tempeh (tempe) has been known to have antibacterial properties due to the presence of glycoprotein compounds, antimicrobial peptides, and flavonoids produced by the fungus Rhizopus spp. during the fermentation process. The addition of garlic powder is expected to increase the antibacterial activity of tempeh against contaminant bacteria. This research aimed to analyze the antibacterial activity, water content, and organoleptic properties (taste, aroma, and color) of tempeh with garlic powder supplementation. Garlic powder was added to the tempeh fermentation process with various concentrations of 0.15, 0.25, 0.50, and 0.75%. Antibacterial activity, water content, and qualitative organoleptic tests were analyzed using paper disk diffusion, gravimetric, and questionnaire methods. The results showed that the addition of garlic powder in all treatments for Bacillus sp had shown an inhibitory activity with moderate strength with an inhibitory power of 0.15; 0.25; 0.50; and 0.75% respectively 8±1.71; 10±1.71; 7±0.96; 9±0.58. Meanwhile, Escherichia coli showed no inhibitory activity. The addition of garlic powder at a concentration of 0.25% reduced the water content to 58.25±0.03. In addition, the addition of garlic powder was not able to affect the color but was able to influence the aroma and taste of tempeh. Garlic powder was able to inhibit Bacillus sp with the best concentration of 0.25%; the addition of garlic powder can reduce the water content and affect the aroma and taste of tempeh.
Ability Test of IAA (Indole-3-Acetic Acid) Hormone-Producing Endophytic Bacteria from Lamongan Mangrove Fatimah, Fatimah; Lailatul Ayu Fadilah, Risky; Izzatul Millah, Annida; Nurhariyati, Tri; Irawan, Bambang; Affandi, Moch; Rini Nur Izza Zuhri, Afifa; Watamtin Widhiya, Eva; Salsabila, Syarifah; Asrifah Ramly, Zakia
Jurnal Riset Biologi dan Aplikasinya Vol. 4 No. 1 (2022)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrba.v4n1.p42-50

Abstract

Most of the plant-associated bacteria can synthesize active biological components of phytohormones such as auxin. This study aimed to examine the potency of 61 endophytic bacteria isolates from the mangroves at Kutang Beach, Lamongan in producing IAA hormone and to identify types of isolates effecting the concentration of IAA, morphological characteristics of isolates, as well as endophytic bacterial species that have the most potential to produce IAA hormone. Screening of endophytic bacteria isolates was performed using the colorimetric method and the production of IAA was carried out using the spectrophotometric method. IAA production by endophytic bacteria was analyzed descriptively and statistically. One-Way ANOVA was employed to determine the effect of the isolate type on the concentration of IAA. The most potential isolates to produce IAA hormone are identified by 16s rRNA gene marker. The screening results showed that 12 isolates of endophytic bacteria have the potential to produce IAA hormones (2.0-9.3 ppm), coded with LMG 7, 15, 31, 32, 43, 53, 54, 55, 56, 57, 62, and 63. The results of the One-Way ANOVA test suggested that the type of isolates did not affect the concentration of IAA produced by endophytic bacteria. The twelve isolates had different morphological characters and those were Gram-positive bacilli with cell sizes ranging from 1.5 µm - 3 µm. The highest concentration of IAA was produced by LMG 15 (9.3 ppm). LMG 15 was identified as Bacillus cereus strain LMG 15, having 99.33% similarity to Bacillus cereus strain IAM 12605.
Isolation and Potency Test of Endophytic Bacteria as Nitrogen Fixer from Mangrove Plant in Lamongan Fatimah, Fatimah; Izzatul Millah, Annida; Lailatul Ayu Fadilah, Risky; Salsabila, Syarifah; Asrifah Ramly , Zakia; Sugiarti , Tipuk; Nurhariyati , Tri; Affandi , Moch
Jurnal Riset Biologi dan Aplikasinya Vol. 4 No. 1 (2022)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrba.v4n1.p26-33

Abstract

Endophytic bacteria are microorganisms that live in plant tissues and some of them contribute to nitrogen fixation for plants. This study aimed to isolate and identify endophytic bacteria from mangroves of Kutang Beach, Lamongan, which potentially as nitrogen fixing bacteria. Bacterial Isolates were used as candidates for biofertilizers. Leaves samples were taken from 10 sampling points. Bacterial isolation was initiated by sterilizing the surface of the leaves sample and grinding it aseptically. Isolation was carried out with a pour plate method on Nutrient Agar medium. Screening for endophytic bacteria's potential as N-fixing agent was carried out by growing the bacterial isolates on a semi-solid Nitrogen Free Bromothymol Blue (NFB) medium. The isolates that produced a positive reaction with a change in the color of the medium to blue were then subjected to macroscopic (shape, color, elevation, and the edge of the colony) and microscopic observations (Gram stain and bacterial cell measurements). The isolates showed the fastest change in the color of the medium were identified by the molecular marker of the 16S rRNA gene. The data obtained were analyzed descriptively. As many as 20 isolates were obtained from the mangroves of Kutang Lamongan Beach, and ten isolates of twenty potentially as nitrogen-fixing bacteria. The ten nitrogen-fixing bacteria isolates had varying macroscopic characteristics. The microscopic characteristics showed that eight isolates had Gram-positive bacilli, and two isolates were Gram-negative with varying bacterial sizes. Based on the 16S rRNA gene sequence, the most potential of nitrogen-fixing bacteria was LMG II-14 isolate and identified as Paenibacillus alvei LMG II-14 with 99.36% similarity to Paenibacillus alvei strain DSM 29 based on the NCBI database. The ten nitrogen fixing isolates that have been obtained can later be used as candidates for biofertilizer composition, especially Paenibacillus alvei LMG II-14.

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