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All Journal Jurnal Biologi Tropis Bioscientist : Jurnal Ilmiah Biologi
Apriyelita, Annisa
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Social Sciences

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Antimicrobial Activity of Soaked and Boiled Jengkol Fruit Skin Extract against Staphylococcus aureus, Escherichia coli and Candida albicans Nurmiati, Nurmiati; Periadnadi, Periadnadi; Apriyelita, Annisa
Jurnal Biologi Tropis Vol. 24 No. 3 (2024): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i3.7193

Abstract

Jengkol (Archidendron jiringa) fruit skin contains saponin, tannin, flavonoid, and phenolic compounds which act as antimicrobials in inhibiting and killing microbial. This research aimed to analyze the differences in various jengkol fruit skin extracts in antimicrobial activity against test microbes, as well as to analyze the total phenolic content and total saponin content in each jengkol fruit skin extract. The research method was carried out using an experimental method. Factor A extract (soaking and boiling) and Factor B Microbe (Staphylococcus aureus, Escherichia coli, Candida albicans). The results of this research showed that extracts from soaking and boiling of jengkol fruit skin provided different inhibitory effects on the growth of S. aureus, E. coli, C. albicans. The best extraction method that produces the largest zone of inhibition for test microbes is boiling extract. The extract with the highest total phenolic content is boiling extract with a total phenolic content of 7.517 mgGAE/ml. The extract with the highest total saponin content is boiling extract with a total saponin content of 16.11%.
Sustainable Agriculture in Indonesia: A Review Article on Strategies, Challenges, and Opportunities from a Scientific Perspective Apriyelita, Annisa; Marviano, Fajri Ramadhan
Jurnal Biologi Tropis Vol. 25 No. 4b (2025): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4b.10386

Abstract

Sustainable agriculture integrates ecological, social, and economic aspects to increase productivity without damaging the environment. This study aims to analyze the strategies, challenges, and opportunities for sustainable agriculture in Indonesia. The method used was a literature review of recent national and international journals with thematic analysis. The results indicate that effective strategies include crop diversification, agroforestry, organic fertilizers, biopesticides, water-efficient irrigation, and precision agriculture based on sensors and geospatial data. Key challenges include limited technology, capital, and policy support, while opportunities are driven by consumer awareness, supply chain digitization, and strengthening farmer institutions. In conclusion, the success of sustainable agriculture in Indonesia requires the integration of adaptive strategies, precision technology, and institutional support to strengthen food security and ecosystem sustainability.
Eksplorasi Bakteri-bakteri Pemfermentasi dalam Beberapa Produk Tempe di Kota Padang Nurmiati, Nurmiati; Periadnadi, Periadnadi; Jadespi, Sherly; Apriyelita, Annisa
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 1 (2024): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i1.11094

Abstract

Tempeh is one of Indonesia's traditional foods produced through the microbial fermentation process of Rhizopus. It has become a favorite among the community, typically cooked before consumption. The fermentative bacteria in tempeh are suspected to act as probiotics, potentially making tempeh a functional food. Thus far, there have been no reports on the presence of fermentative bacteria in soybean tempeh in Padang City. Therefore, this study aimed to analyze the presence of fermentative bacteria and enzymatic activities in various tempeh products in Padang City. The research focused on identifying the presence and proportion of fermentative bacteria in soybean tempeh in Padang City. The study utilized a survey method, and the data obtained were analyzed descriptively. The results indicated the total presence of bacteria in soybean tempeh samples (11.2 - 15.3 x 10^6 CFU/g), fermentative bacteria (3.30 - 6.10 x 10^6 CFU/g), acetic acid bacteria (0.90 - 1.50 x 10^5 CFU/g), proteolytic bacteria (2.10 - 3.70 x 10^6 CFU/g), cellulolytic bacteria (34.60 - 6.50 x 10^6 CFU/g), and amylolytic bacteria (2.20 - 4.90 x 10^6 CFU/g).
Potensi Antimikroba dan Antioksidan Beberapa Ekstrak Daun Benalu (Scurrula ferruginea (Roxb. ex Jack) Danser dari Archidendron sp. terhadap Staphylococcus aureus, Escherichia coli, dan Candida albicans Apriyelita, Annisa; Periadnadi, Periadnadi; Nurmiati, Nurmiati
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 1 (2024): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i1.11108

Abstract

Scurrula ferruginea (Roxb. ex Jack) Danser is known for its role as an antimicrobial and antioxidant agent due to its content of phenolic compounds, alkaloids, and terpenoids. S. ferruginea has been widely used in traditional medicine for skin infections, diarrhea, hypertension, and digestive tract diseases. This study aims to determine the antimicrobial and antioxidant potential of various treatments of S. ferruginea mistletoe extracts. The experimental method used in this research is the nested pattern experiment. The extract treatments applied include fresh extract, boiled dry extract, boiled fresh extract, brewed dry extract, and brewed fresh extract. Antimicrobial potential was assessed using disc diffusion and dilution methods. Antioxidant activity (IC50) was determined using the DPPH (1,1-Diphenyl-2-Picryl-Hydrazine) method, and Total Phenolic Content (TPC) was also determined. The results indicate that the highest antimicrobial activity against Escherichia coli and Staphylococcus aureus was found in the strong category of fresh extract treatment, whereas there was no significant effect on Candida albicans growth. The fresh extract treatment exhibited the highest antimicrobial activity with a total phenolic content of 20.77321 mgGAE/mL. The Minimum Inhibitory Concentration (MIC) values for the fresh extract against S. aureus and E. coli were 6.25%, and the Minimum Bactericidal Concentration (MBC) values were 12.5% against both bacteria. The antioxidant value of the fresh extract was 101.26 μg/mL, categorized as moderate. Based on the conducted research, it can be concluded that S. ferruginea leaf extract can inhibit the activities of S. aureus and E. coli, while showing no effect on Candida albicans growth.
Co-Authors Jadespi, Sherly Marviano, Fajri Ramadhan Nurmiati Nurmiati Periadnadi Periadnadi