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Bioscientist : Jurnal Ilmiah Biologi
Published by Universitas Pendidikan Mandalika
ISSN : 23385006     EISSN : 26544571     DOI : https://doi.org/10.33394
Core Subject : Science, Education, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Social Sciences
Bioscientist : Jurnal Ilmiah Biologi (BJIB), receiving and publishing article in the form of research (scientific article) in the field of biology education and utilization of biological research in learning. Moreover, this journal bridges the gap between research and practice, providing information, ideas and opinion, in addition to critical examinations of biology research and teaching. Through the coverage of policy and curriculum developments, the latest results of research into the teaching, learning and assessment of biology are brought to the fore. Special emphasize are as follow: 1. Research on Learning Biology (Biology Learning Materials at All Education Levels). 2. Pure Research of Biology Developed or Studied to the Sources, Materials, or Instructional Media Biology (Biology Learning Materials at All Education Levels and Application in Society). 3. Curriculum of Biology Education at all Education Levels. 4. Class Action Research (CAR) and Lesson Study in Biology. 5. Other Qualitative Research of Biology Education. 6. The School Management and Biology/Science Laboratory Management. 7. Biology Learning Evaluation. 8. Teacher Professional Issues/Trends in Biology Education. 9. Another Study for the Scope of Biology Education. 10. Research on Environmental Education.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 115 Documents
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Search results for , issue "Vol. 12 No. 2 (2024): December" : 115 Documents clear
Struktur Komunitas dan Status Konservasi Ikan Berdasarkan Alat Tangkap Tradisional di Desa Simonis Kabupaten Labuhan Batu Utara Ritonga, Irna Alfaini; Khairul, Khairul; Harahap, Hasmi Syahputra
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
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.v12i2.13057

Abstract

Fish diversity must be maintained because it has an ecological role, namely maintaining the balance of the ecosystem and can be used as an indicator of pollution. diversity is also important for the balance of aquatic ecosystems and some simonis villagers make it a community livelihood.  Based on information from residents of Simonis Village, North Labuhan Batu Regency, it is recognized that the diversity found in the river is quite high. In addition, residents of simonis village, north labuhan batu district can also utilize river water in pulo biski as drinking water, washing clothes, bathing and tourism.  This study aims to determine the community structure, ecological index and conservation status of fish obtained in Simonis Village based on IUCN data. This research is a survey with the determination of observation stations through purposive sampling method. Fish sampling was carried out using environmentally friendly fishing gear such as nets, shoots, fishing rods and tanggok or nets. The results of this study obtained approximately 22 species of fish and each fish species and morphological identification was carried out in order to know the scientific name of each type of fish. Index value and Diversity with moderate category. Diversity Index value with high category. Dominance Index value with no dominance criteria. It is concluded that the diversity of fish in Simonis Village, North Port Batu Regency.
Analysis of The Performance of Microbubble Generators as Aerators in Tilapia Cultivation with High Density Fishery Systems Pambudiarto, Benny Arif; Pahlawan, Ilham Arifin; Fatmawati, Yuni; Mirbath, Muhammad Shobichul
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
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.v12i2.13064

Abstract

Fish farmers in Gresik Regency face significant challenges in developing aquaculture, including land conversion and extended dry seasons that lead to pond drought. Microbubble generators (MBGs) present a potential solution to these issues. This study evaluates the effectiveness of different MBG types in tilapia farming. Weekly measurements of fish mass and length were conducted to determine growth rates using direct methods. Water quality was assessed by testing COD and ammonia levels at the Gresik Regency DLH Laboratory and measuring dissolved oxygen levels directly with a DO meter. The distribution and size of the bubbles were analyzed using the shadow image technique, supported by MATLAB software. The study employed a stocking density of 100 fish/m² with three treatments: MBG swirl type, venturi type, and a conventional aerator. The findings revealed that the MBG swirl type resulted in the best fish growth and maintained water quality within the required standards. The specific growth rate in swirl-type ponds was 3.970 ± 0.014, with a survival rate of 100%. Additionally, the swirl-type MBG effectively maintained dissolved oxygen levels above 3 ppm, meeting the minimum requirement for fish survival, despite having less optimal microbubble distribution compared to the venturi type. While the MBG venturi type performed well initially, technical issues affected its bubble consistency over time. Enhancements in the venturi MBG's design are recommended to improve its performance and reliability.
Aktivitas Antidiabetes Ekstrak Etanol Daun Bidara Pada Tikus Dengan Induksi Streptozotocin Wahyuni, Kumala Sari Poespita Dewi; Mawardika, Herlinda; Sabban, Indra Fauzi
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
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.v12i2.13070

Abstract

Type 2 Diabetes Mellitus is a global health problem that continues to increase, requiring safer and more effective alternative therapies. Bidara leaves have been known to have bioactive compounds that are useful as antioxidants, antimicrobials, and antidiabetics. This study aims to determine the potential of bidara leaf extract in lowering blood sugar in diabetic rats. This study is an experimental research with four treatments. This study includes the manufacture of bidara leaf extract through the maceration method, phytochemical screening, and testing of antidiabetic activity in STZ-induced animal models. Blood sugar levels were measured before and after the intervention. The results showed that (1) bidara leaf extract contains flavonoids, tannins, saponins, steroids, and quinones; (2) Giving extracts with various concentrations for 42 days can reduce blood glucose levels in rats; (3) Bidara leaf extract at a dose of 400 mg/ml showed higher activity than other doses. Thus, it can be concluded that 70% ethanol extract of bidara leaves can be used to treat type 2 diabetes mellitus.
Evaluating the Efficacy of Topical Moringa Oleifera and Aloe Vera Extracts in Accelerating Second-Degree Burn Wound Healing Fauziah, Dwi Nur; Ramadani, Nur Laili; Moniz, Argita Agnesia; Syafitri, Wahyu Fauziah Iga; Humairah, Sandrina; Pradipta, Rifky Octavia
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
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.v12i2.13071

Abstract

Burn injuries are a global health issue, particularly second-degree burns, which damage both the epidermis and dermis. This has led to the exploration of natural treatments like Moringa oleifera (moringa) and Aloe vera for their potential in wound healing, pain relief, and infection prevention. This study aimed to evaluate the efficacy of a topical formulation containing extracts of Moringa oleifera and Aloe vera in accelerating the healing of second-degree burn wounds. This study employed a true experimental design with Sprague Dawley rats, divided into four groups (control positive, control negative, and two treatment groups). The experiment utilized topical formulations combining different concentrations of Moringa oleifera and Aloe vera extracts. The wound healing process was assessed through macroscopic observation and histopathological analysis, measuring the diameter of the burn wounds at different time intervals. Results showed that formulations containing Moringa oleifera and Aloe vera extracts significantly improved wound healing compared to the control group. The formulation with a 50:50 ratio of Moringa oleifera and Aloe verademonstrated the highest efficacy, reducing wound size and promoting fibroblast proliferation and vascularization. This study confirms the potential of a topical combination of Moringa oleifera and Aloe vera extracts in accelerating the healing of second-degree burns.
Efektivitas Ekstrak Padina minor dalam Meningkatkan Kadar Klorofil Pada Tanaman Sorgum Yourga, Anze; Chaniago, Irawati; Kasim, Musliar
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
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.v12i2.13099

Abstract

Sorghum is a potential alternative food source due to its high carbohydrate, fiber, and protein content, which surpasses that of rice, as well as its greater adaptability to marginal land and dry weather conditions. However, sorghum productivity is often hindered by suboptimal fertilizer use, necessitating additional solutions like biostimulants. Seaweed-based biostimulants, such as Padina minor, hold promise in enhancing plant growth by stimulating nutrient absorption, improving resistance to abiotic stress, and enriching soil quality. This study aimed to evaluate the effectiveness of P. minor extract in increasing chlorophyll levels in sorghum plants. The experiment was conducted using a Completely Randomized Design (CRD) with varying concentrations of P. minor extract (20%, 30%, and 40%) and application frequencies (1, 2, and 3 times). The research results showed that (1) a concentration of 20% with administration of the extract once gave a significant increase in chlorophyll levels compared to other concentrations and frequencies; (2) administration of biostimulants in low concentrations and with fewer administration frequencies has proven to be more effective; (3) higher concentrations and frequencies of biostimulants can cause toxicity to plants; (4) the use of P. minor extract as a biostimulant can be a sustainable alternative in agricultural practices to improve the quality and productivity of sorghum.
Respons Pertumbuhan Rimpang Bangle (Zingiber purpureum) Pada Perlakuan PGPR (Plant Growth Promoting Rhizobacteria) Wardana, Singgih Tri; Mangandi, Wulan Fransisca; Harmida, Harmida; Setiawan, Doni
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
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.v12i2.13142

Abstract

Bangle (Zingiber purpureum Rosc.) is one of the species of the Zingiberaceae family that has medicinal properties. Secondary metabolites contained in bangle rhizomes have biological activity as antioxidants, anti-inflammatory, anticancer, anti-asthma, anti-aging, neuroprotective, antimicrobial. Environmentally friendly technological innovation to increase soil nutrient content and plant growth in sustainable plant cultivation efforts is by utilizing plant growth-promoting rhizobacteria (PGPR). This study aims to determine the effect of PGPR concentration on the growth of bangle rhizomes. This study was conducted at the Physiology and Development Laboratory, Department of Biology, Faculty of Mathematics and Natural Sciences, Sriwijaya University. A completely randomized study design was used with five PGPR concentration treatments (0; 75; 125; 175; and 225 ppm). Data were analyzed by Analysis of Variance (Anova) and Duncan's Multiple Range Test (DMRT). The study showed that PGPR treatment can increase the growth of bangle rhizomes compared to no PGPR treatment. The best results at a PGPR concentration of 175 ppm in increasing the growth of bangle rhizomes.
Potensi Aktivitas Antagonistik Streptomyces dari Rhizosfer Pohon Pule (Alstonia scholaris) sebagai Biokontrol Isrianto, Pramita Laksitarahmi; Wilujeng, Sukian; Marmi, Marmi
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
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.v12i2.13163

Abstract

Pule plant (Alstonia scholaris) is one of the plants that is often chosen for greening purposes and can be used as a medicinal plant. The ability of Pule plant interaction with microbes is shown from its potential as a source of beneficial microbes, both from the phyllosphere, rhizosphere, and endophytes. The tree rhizosphere microbial ecosystem plays an important role in maintaining tree health and has the potential to produce microorganisms with biocontrol activities. This study aims to evaluate the antagonistic activity of Streptomyces sp isolated from the rhizosphere of Pule trees (Alstonia scholaris) on the ability to inhibit pathogenic bacteria. The research method used disc antagonist test to determine the effectiveness of Streptomyces sp. in inhibiting the growth of pathogenic bacteria, macroscopic and microscopic characterization observations to identify isolates, as well as KOH test and catalase test. The test samples were Streptomyces isolates against Bacillus sp., Fusarium sp., and Aspergillus sp. and the data were analyzed descriptively. The results showed that the isolate Streptomyces sp. has the ability to inhibit the growth of Bacillus sp. and Fusarium sp. In biochemical tests revealed that the isolate is a gram-positive bacterium, based on the results of the KOH test showed that Streptomyces sp. is not slimy (+), while the catalase test produced negative (-) showed no bubbles, meaning Streptomyces sp. does not inhibit the growth of Bacillus sp. and Aspergillus sp.
Korelasi Kadar Total Flavonoid Ekstrak dan Fraksi Polar Kelopak Rosella (Hibiscus sabdariffa L.) Terhadap Aktivitas Antioksidan dengan Metode DPPH (2,2-Difenil-1-Pikrilhidrazil) Sari, Fita; Hidayatul, Fathul; Sariwati, Atmira; Wahyuni, Dwi; Hesturini, Rosa Juwita
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
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.v12i2.13205

Abstract

Senyawa metabolit sekunder rosella memiliki manfaat kesehatan, seperti hipertensi, diabetes, dan penyakit kardiovaskular. Rosella digunakan sebagai bahan minuman kesehatan, karena senyawa aktifnya seperti antosianin, polisakarida, dan flavonoid. Flavonoid dalam rosella diduga memiliki aktivitas antioksidan dalam menangkal radikal bebas penyebab penyakit. Penelitian ini bertujuan melihat profil fitokimia ekstrak dan fraksi polar kelopak rosella dengan Kromatografi Lapis Tipis (KLT) dan dilanjutkan menguji kadar total flavonoid serta aktivitas antioksidan dengan DPPH (1,1-difenil-2-pikrilhidrazil). Studi ini merupakan penelitian kualitatif dan kuantitatif, untuk mendeteksi profil fitokimia dari ekstrak dan fraksi kelopak rosella dilanjutkan uji kadar total flavonoid dan aktivitas antioksidan. Hasil penelitian menunjukkan bahwa (1) adanya senyawa flavonoid, ditandai bercak warna biru pada plat KLT, (2) uji kadar total flavonoid dari ekstrak menunjukkan sebesar 139,4321 ppm sedangkan fraksi polar 204,8334 ppm, (3) uji aktivitas antioksidan menunjukkan bahwa ekstrak rosella memiliki aktivitas lemah dengan nilai IC50 sebesar 656,4775 ppm, sedangkan fraksi lebih kuat dengan nilai IC50 sebesar 110,1132 ppm. Dengan demikian dapat disimpulkan bahwa ekstrak etanol dan fraksi polar kelopak rosella diduga memiliki senyawa flavonoid yang berperan sebagai antioksidan namun fraksi lebih kuat dibandingkan dengan ekstrak etanol kelopak rosella.
Hedonic Test of Instant Powdered Ginger Drink with Sugar and Sugar-Palm Sugar Combination Jannah, Husnul; Badi'ah, Baiq Arriyadul; Amalia Rachman, Irna Ningsi; Desimal, Iwan
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
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.v12i2.13207

Abstract

Stress, environmental pollution, radiation, and excessive food processing contribute to the production of free radicals, which are harmful to the body. Antioxidants play a role in preventing free radicals from damaging nucleotides. Ginger contains high levels of antioxidants, making it beneficial for overall health. However, ginger has a short shelf life, and its traditional preparation methods are less preferred by many people. Therefore, ginger is now available in the form of instant drink powders, which can be prepared like tea or coffee. This study is a descriptive study using the hedonic test method. Thirty students were selected as panelists. The panelists evaluated two types of ginger drinks made with different sweeteners: sugar and a combination of sugar and palm sugar (sugar-palm sugar). The parameters assessed in this study were color, aroma, taste, and sweetness level. The results of the hedonic test showed that the ginger drink sweetened with the sugar-palm sugar combination had the highest preference percentages across all parameters: color, aroma, taste, and sweetness level. For color, the "like" preference level achieved a percentage of 40%. For aroma, the "really like" preference level reached 43.33%. Taste received a "really like" preference level of 53.33%, and sweetness achieved a "like" preference level of 36.67%. In conclusion, the panelists preferred the ginger drink sweetened with the sugar-palm sugar combination over the drink sweetened with just sugar. This preference is attributed to the addition of palm sugar, which balances the ginger's strong flavor while retaining its distinct taste. Furthermore, the combination of ginger and palm sugar produces a harmonious blend of color, aroma, taste, and sweetness that complements both ingredients.
Induksi Kalus Krisan (Chrysanthemum morifolium var. reagen pink) dengan Penambahan Naphtalen Acetic Acid (NAA) dan Kinetin Secara In-Vitro Sholehah, Washeilatus; Resmisari, Ruri Siti; Oktafia, Safina; Mumpuni, Siwi Putri
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
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.v12i2.13217

Abstract

Chrysanthemum morifolium var. reagent pink is an ornamental flower that is widely cultivated in Indonesia. The increasing demand makes it difficult for farmers to fulfill the market. In-vitro tissue culture is an effective solution to multiply chrysanthemum seedlings in bulk and quickly. This study aims to identify the most effective concentration in inducing callus in chrysanthemum plants by combining Naphtalen Acetic Acid (NAA) and kinetin. This study was an experimental research with a completely randomized design (CRD), involving 12 treatments and each treatment was repeated 4 times. There were two treatment factors; NAA concentration (0 mg/l, 0.5 mg/l, 1 mg/l) and kinetin concentration (0 mg/l, 1 mg/l, 2 mg/l, 3 mg/l). Parameters in this study included days to callus appearance, percentage of callus explants, callus wet weight, callus color, and callus texture. Data were analyzed using analysis of variance (ANOVA). The results showed that (1) the fastest callus was formed at 11 HST by giving the treatment of 0 mg/l NAA + 3 mg/l kinetin; (2) the optimal treatment for the percentage of callus explants was obtained by giving 1 mg/l NAA + 1 mg/l kinetin); (3) the optimal treatment of callus wet weight was obtained by giving 1 mg/l NAA + 2 mg/l kinetin; (4) the best callus quality was obtained by giving a combination of NAA 1 mg/l and kinetin 1 mg/l, with a crumbly texture and brownish yellow callus.

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