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Jurnal Pembelajaran dan Biologi Nukleus
Published by Universitas Labuhanbatu
ISSN : 24429481     EISSN : 26857332     DOI : https://doi.org/10.36987/jpbn
Core Subject : Science, Education, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media
Jurnal Pendidikan Biologi merupakan jurnal elektronik yang merupakan wadah penerbitan artikel penelitian original yang terkait dengan penelitian pendidikan biologi. Jurnal ini dikelola oleh Program Studi Pendidikan Biologidibawah naungan LPPM Universitas Labuhanbatu. Jurnal ini diterbitkan dua kali dalam setahun pada bulan Maret dan September. Jurnal ini menyajikan hasil penelitian dibidang Pendidikan Biologi dan sains Biologi.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 437 Documents
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Characterization and Formulation of Butterfly Pea Flower Drinks (Clitoria ternatea L.) Fermented by Pineapple Peel based on Organoleptic Attributes and Gen-Z Acceptance Pahlevi, Muhammad Rizza; Widhianata, Hani; Kurniahu, Hesti
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 11, No 3: Jurnal Pembelajaran Dan Biologi Nukleus September 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v11i3.7907

Abstract

Background: Butterfly pea flowers (BPF) Clitoria ternatea were known as an antioxidant-rich functional drink ingredient at approximately 6.58 ppm. Various kinds of BPF drinks formulations had been consumed by the public, especially the older generation, due to their benefits. Meanwhile, the younger generation (Generation Z) was not familiar with these drinks and tended to enjoy soft drinks with sweet and fizzy flavors. This study formulated BPF with fermented pineapple peel (FPP) as an alternative to soft drinks. Methodology: Based on the SNI 01-2346-2006 standard, a total of 34 untrained Generation Z panelists were used to test organoleptic attributes (color, flavor, aroma, and sensation) using the Check-All-That-Apply approach and the hedonic test 5-point scale approach for panelist acceptability. Five formulations were used: BPF without sugar (A), with 10% sugar (B), (FPP + 10% sugar) (C), (BPF + FPP + 10% sugar) (D), and (BPF + FPP + 20% sugar) (E). Results: Based on Kruskal-Wallis with the Mann-Whitney further test for all organoleptic attributes, there were significant differences; the preferred color was formulation A, the aroma acceptability was neutral for all formulations, the preferred flavor was formulation E with a strong sweet and sour flavor, and for the sensation, formulation A was not preferred. The overall rating assessment showed that formulation E had the highest score due to strong sweet-sour flavor. Formulation E became the  favorite drink of the panelist. This formulation could be a consideration for functional BPF drink innovation, which is the novelty of this study as an alternative to soft drinks with the Generation Z market share. Contribution: This study contributes scientifically by demonstrating that the combination of antioxidant-rich butterfly pea flower and fermented pineapple peel can be formulated into a functional drink with sensory attributes acceptable to Generation Z, thus bridging traditional herbal drinks with modern consumer preferences
Morphochemical Composition of Soil Microplastics in Lampung Landfill Using Microscopy and FTIR Spectroscopy Method Almayda, Lika Dini; Kamelia, Marlina; Hoya, Ade Lenty
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 11, No 3: Jurnal Pembelajaran Dan Biologi Nukleus September 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v11i2.7487

Abstract

Background: Plastic debris smaller than 5 mm is categorized as microplastic, a pollutant with persistent characteristics that often contains toxic or carcinogenic compounds. These particles can infiltrate soil systems, migrate into the food chain, and ultimately threaten both environmental integrity and human health. This research focuses on identifying the types and quantifying the abundance of microplastics in soils collected from three final disposal sites in Lampung Province, Indonesia. Methodology: Sampling at three landfill points was carried out purposive sampling method, with microplastics sample analyzed through visual inspection by microscopy and polymer composition confirmed using Fourier Transform Infrared (FTIR) Spectroscopy Method. Findings: Landfill sites B1 and C1 exhibited the highest abundance of microplastics, reaching 195 particles per kilogram of soil. The particles displayed morphological diversity, including fragments, fibers, and films, with fragments representing the predominant category. The color distribution was largely transparent, black, and brown, while the detected particle sizes ranged from 2.12 to 110.25 μm. Polymer analysis revealed the presence of polyethylene (PE), polyamide, and polystyrene, alongside particles suspected to be polyethylene terephthalate (PET). These findings indicate that physical and chemical degradation processes accelerate the breakdown of plastics into smaller fragments, thereby contributing to elevated microplastic levels in landfill soils. Contribution: The outcomes of this research, derived from visual microscopy and FTIR Spectroscopy-based identification of microplastics in Lampung landfill soils, The findings offer essential data for the development of monitoring frameworks and risk assessment strategies related to soil and environmental risks in the region
Biofertilizer Application of Rabbit Urine and Eggshell Powder Improves Purple Eggplant (Solanum melongena L.) Productivity Under Tropical Field Conditions Fernanda, Yohanes Ferry; Hidayat, Ramdan; Pribadi, Didik Utomo
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 11, No 3: Jurnal Pembelajaran Dan Biologi Nukleus September 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v11i3.7766

Abstract

Background: Eggplant (Solanum melongena L.) production in Indonesia is still low compared to the national demand of about 782,600 tons, with current production only 102,540.3 tons. To improve yields, organic fertilizers such as rabbit urine and chicken eggshells can be used, as they provide beneficial nutrients for the plants. The purpose is to determine the effects of liquid organic fertilizer (LOF) made from rabbit urine and varying doses of chicken eggshells on the growth and yield of purple eggplant (S. melongena L.). Methodology: The research was conducted in Menganti Subdistrict, Gresik Regency. The study used a Factorial Complete Randomized block Design (CRBD) with two factors: rabbit urine concentration (10, 20, 40, 80 ml/L) and chicken eggshell doses (5, 10, 15 grams/plant), observation parameter included plant morphology, fruit yield, and the quality of the fruit. ANOVA was used to analys the data. Findings: The results showed that there was no significant interaction between the two treatments on any observed parameters. The single-factor treatment of chicken eggshell dose had a highly significant effect on both vegetative and generative growth, with an optimal dose of 10 grams per plant. Meanwhile, the single-factor treatment of rabbit urine concentration had no significant effect; however, concentrations of 10–20 ml/L showed a tendency to increase plant yield. The highest fruit set percentage, 69.61%, was obtained from the combination treatment of 10 ml/L rabbit urine and 10 grams/plant chicken eggshell. Contribution: The combination of Rabbit urine and eggshell effective as a an promising biofertilizer for the optimum growth and yield of eggplant
The Cellulase Enzyme Activity of Thermophilic Bacteria from Way Belerang Hot Spring, Lampung Hidayah, Rismawati; Suryanti, Erma; Asagabaldan, Meezan Ardhanu; Prasetyo, Budhi Agung
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 11, No 3: Jurnal Pembelajaran Dan Biologi Nukleus September 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v11i3.7493

Abstract

Background: The demand for cellulase enzymes across various industries continues to rise, while most of the current supply still depends on imports. Therefore, exploring local biological resources, such as thermophilic bacteria capable of producing cellulase, is crucial. This study aims to isolate and evaluate the cellulase enzyme activity of thermophilic bacteria from the Way Belerang Hot Spring in South Lampung, Indonesia. Methodology: The research involved isolating bacteria from hot spring water samples, conducting qualitative and quantitative assays of cellulase activity, and characterizing the isolates. Findings: A total of 24 bacterial isolates were obtained, 16 of which demonstrated cellulolytic activity, as indicated by clear zones on 1% CMC agar. The two most promising isolates, S5.1 and S5.24, exhibited the highest cellulolytic indices of 2.728 and 2.395, respectively. These isolates were further tested quantitatively using a glucose standard curve to determine their enzyme activity. The highest cellulase activity for isolate S5.1 was recorded at the 10th hour with 5.1 × 10⁻² U/mL, while isolate S5.24 showed peak activity at the 14th hour with 3.1 × 10⁻² U/mL. Contribution: This study represents the first investigation of thermophilic amylase-producing bacteria from the Way Belerang Hot Spring, highlighting the potential of thermostable amylase enzymes that can withstand high temperatures for future industrial applications.
Physicochemical Characterization and Antibacterial Efficacy of Toothpaste Formulations Containing Arabica Coffee Husk Ethanol Extract Against Streptococcus mutans and Staphylococcus aureus Priltius, Natanael; Fitri, Raissa; Fitrianty, Novi Anisyah; Halawa, Tristan; Adiansyah, Adiansyah
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 11, No 3: Jurnal Pembelajaran Dan Biologi Nukleus September 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v11i3.7970

Abstract

Background: Coffee husk, a major by-product of the coffee industry, is rich in phenolics, chlorogenic acid, and caffeine with known antioxidant and antimicrobial activities. This study evaluated Arabica coffee husk extract as an active ingredient in herbal toothpaste formulations, focusing on stability and antibacterial efficacy. Oral health problems, particularly dental caries, remain a global concern, affecting 2.3 billion people in permanent teeth and over 530 million children in primary teeth. Streptococcus mutans is the main cariogenic bacterium, while Staphylococcus aureus also contributes to oral infections. Safe, effective, and natural antimicrobial agents are urgently needed for prevention. Methodology: Arabica coffee husk powder was characterized Physicochemical according to the Indonesian Materia Medica (MMI). Toothpaste formulations containing 1%, 3%, and 5% w/w ethanol extract were prepared and tested for organoleptic properties, homogeneity, and stability over three weeks at room temperature. Stability was assessed weekly by monitoring pH, viscosity, temperature, phase separation, and color changes. Antibacterial activity against S. mutans and S. aureus was evaluated using the agar well diffusion method. All treatment were conducted in triplicate (n = 3). Findings: Phytochemical evaluation confirmed compliance with MMI standards. All formulations remained stable in color, odor, and consistency, with no phase separation or microbial contamination. Antibacterial assays showed concentration-dependent inhibition:  the 5% extract (F3) produced inhibition zones of 18.2 ± 0.5 mm against S. mutans and  15.6 ± 0.7 mm against S. aureus. The negative control (without extract) showed no inhibition, while the positive control (chlorhexidine) produced clear zones. Contribution: Arabica coffee husk extract can be formulated into stable toothpaste with significant antibacterial activity, particularly against S. mutans, supporting its potential as a sustainable natural oral care agent
Shrimp Shell and Head Flour Formulation in Wet Noodle Products as Source of Protein and Calcium Nurfita, Nurfita; Safrida, Safrida; Iskandar, Wardah; Febriansyah, Muhammad Irfan
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 11, No 3: Jurnal Pembelajaran Dan Biologi Nukleus September 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v11i3.7764

Abstract

Background: This study is the first to formulate wet noodles with combined shrimp shell and head flour of Metapenaeus monoceros, an area that has been rarely explored. These by-products were chosen for their high protein and calcium content, aiming to enhance nutrition and create value-added functional food. This study aims to investigate the impact of incorporating Penaeid shrimp skin and head flour on the protein content, calcium, and physical and organoleptic properties of wet noodles. Methodolgy: The study used a Completely Randomised Design (CRD) with four treatments: F1 (0%), F2 (5%), F3 (8%), and F4 (10%). Organoleptic tests were conducted by 60 untrained panellists. Data were analysed using parametric (ANOVA) and non-parametric (Kruskal-Wallis) tests using the SPSS software. Findings: The results of the physical quality analysis revealed that the addition of flour had no significant effect on cooking loss (P > 0.05). However, they had a substantial impact on cooking time and elasticity (P < 0.05). Organoleptic tests showed a significant effect  (P<0.05) on the colour, aroma, taste, and texture of wet noodles. The best formulation (F2) compared to the control formulation (F1) showed an increase in protein content from 9.44% to 10% and calcium from 305.54 mg/kg to 1281.29 mg/kg, or almost four times. Contribution: This research presents a significant innovation by demonstrating that shrimp heads and shells are not merely industrial waste but can be utilized as a functional food ingredient. Fortifying noodles with this ingredient offers the dual benefit of improving nutritional quality while supporting environmental digestion.
Synergistic Organic Wick and Nutrient Levels on The Morphological Performance of Pakcoy (Brassica rapa L.) in Hydroponic Axis System Edditya, Shinta Hanif Nur; Triani, Nova; Santoso, Juli
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 11, No 3: Jurnal Pembelajaran Dan Biologi Nukleus September 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v11i3.7794

Abstract

Background: Pakcoy (Brassica rapa) production in Indonesia continues to rise, reaching 635,982 tons in 2018 and 652,723 tons in 2019. Improper irrigation often causes wilting and root rot. The wick hydroponic system offers a viable alternative but is suitable mainly for crops requiring limited water. Inorganic fertilizers enhance growth and yield, their long-term use poses environmental and human health risks. Organic fertilizers provide a sustainable solution without leaving harmful residues. Optimizing pakcoy cultivation in hydroponic systems requires selecting an appropriate wick material and the optimal concentration of organic fertilizer to achieve sustainable productivity. Methodology: This research was conducted with factorial experiment using a 2-factor completely randomized design, the first factor is the fertilizer concentration treatment consisting of 4 types (N0: AB Mix 3 ml/L-control, N1: LOF 6 ml/L, N2: LOF 9 ml/L, N3: LOF 12 ml/L) and the second factor is the type of wick treatment consisting of 4 types (S0: Flannel cloth wick-control, S1: Coconut fiber wick, S2: Bamboo fiber wick, S3: Banana stem wick). If the results obtained have significant, then continue the 5% DMRT test. Findings: The combined treatment of AB Mix at 3 ml/L and a coconut fiber wick exerted a significant influence on plant height between 15 and 25 DAP (13.37 cm), as well as on several yield parameters at 30 DAP, including crown fresh weight (17.97 g), root fresh weight (3.60 g), total fresh weight (21.57 g), and weight loss (0.24 g). The coconut fiber organic wick independently produced significant effects across all observed parameters, except for the number of leaves recorded at 5 DAP. Overall, the interaction between AB Mix at 3 ml/L and the coconut fiber wick demonstrated effective in enhancing the performance of pakcoy (B. rapa L.) compared with other treatment combinations. Contribution: This study provides valuable insights into optimizing the combination of fertilizer concentration and organic wick type in wick hydroponic systems to enhance the sustainable performance growth of pakcoy while promoting the utilization of environmentally friendly local materials
Endophytic Fungi as A Symbion in Polianthes tuberosa L.: Identification, Microscopic Observation, and Secondary Metabolite Analysis Hastuti, Utami Sri; Abdini, Aulia; Puspitasari, Dela Reni; Hamidah, Rodiah Amin; Labibah, Sylvana Bilqis
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 11, No 3: Jurnal Pembelajaran Dan Biologi Nukleus September 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v11i3.7928

Abstract

Background: Polianthes  tuberosa L. was known as an ornamental plants. People use this plant flower for ritual purpose because of the fragrant aroma. This plant rarely attacked by microorganism and usually stay healthy. Some endophytic fungi species live with P. tuberosaL. plant in mutualistic symbiosis interaction. This study was conducted to: (1) determine where the hyphae of endophytic fungi are located within the tissue of P. tuberosa L. plant petals and leaves, using findings from microscopic observations; (2) identify the species of endophytic fungi residing in the flower petals and leaves of P. tuberosa L.; and (3) ascertain the various secondary metabolites produced by each species of endophytic fungi. Methodology: P. tuberosa plant were obtained from flower market at Malang city. The leaves and flower petal parts were prepared for microscopic observation and identification. Cultures of each endophytic fungal species were grown on PDA plate medium, then cut into pieces measuring 5 x 1 cm and inoculated in PDB medium. These were shaken at a speed of 120 rpm for 7 days. After that, the liquid culture was centrifuged at 3000 rpm for 10 minutes. The contents of several secondary metabolites uses the supernatant of the liquid culture. The phytochemical analysis used spectrophotometry method.  Findings: The study findings are: (1) the endophytic fungi hyphae are located in stomata neighbor cells, the walls of xylem cells, epidermal cell walls, sponsa cell walls, and also within the petal epidermis cell walls of the flower; (2) eight endophytic fungi species have been identified; (3) every species of endophytic fungi generates flavonoids, alkaloids, tannins, saponins, and steroids, each with varying content levels. Contribution: Based on this research result, the endophytic fungi culture can be utilized as natural antibiotic source for better synthetic substitution. Besides that endophytic fungi also can be applied as antagonistic fungi to inhibite pathogenic fungi growth that attack some cultivated plant through appropriate research
Cauliflower (Larissa F1) Response to Media Composition and Liquid Organic Fertilizer under Limited Land Condition in Bogem, Sidoarjo Pratiwi, An Nisa Eka; Nugrahani, Pangesti; Sulistyono, Agus
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 11, No 3: Jurnal Pembelajaran Dan Biologi Nukleus September 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v11i3.7792

Abstract

Background : Cauliflower (Brassica oleracea L.) is a highly valued horticultural vegetable comodity. Previous research on the application of Jimmy Hantu LOF on cauliflower has focused on the polybag planting system with a single type of media, whereas this study focuses on the variation in planting medium composition (soil, goat dung, and burnt husks) in conjunction with LOF concentration. This method is expected to provide more thorough information regarding the interaction between growing media and liquid organic fertilizer as a strategy to boost cauliflower productivity in limited land settings. Methodology: The research was carried out at Sidoarjo, East Java. Polybags with various liquid organic fertilizer compositions and dosages were used in this research. The study used a completely randomized factorial design with two treatment factors: the kind of planting media (three treatment levels) and the concentration of liquid fertilizer (four treatment levels). Findings: There was a significant interaction between the soil composition treatment goat manure: burnt husks (1:1:1) (M2) and the content of liquid organic fertilizer 14 ml/L (P3) when compared to the control treatment. The treatment resulted in a 34.42 % difference in the height of cauliflower plants and a 44.93 % difference in the number of leaves. The results show that combination of planting medium soil: goat manure: burnt husk (1:1:1) (M2) with the application of 14 ml/L of Jimmy Hantu liquid organic fertilizer is the most successful treatment. Contribution: These findings provide scientific evidence on the synergistic effect of planting media composition and liquid organic fertilizer concentration, offering a valuable reference for optimizing sustainable B. oleracea cultivation in limited land conditions
Sustainability of Durian Agroforestry in the Selat Area, Jambi: Population Structure and Management Challenges in a Changing Landscape Hariyadi, Bambang; Ihsan, Mahya; Husnudin, Uni Baroroh; Sazali, Ahmad
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 11, No 3: Jurnal Pembelajaran Dan Biologi Nukleus September 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v11i3.7259

Abstract

Background: Agroforestry systems integrate agricultural production with environmental conservation, particularly in tropical regions. Although durian-based agroforestry practices have long been established in Jambi, comprehensive studies on their ecological structure, contribution to biodiversity, and sustainability strategies remain limited. This study aims to analyze the population structure of durian trees, agroforestry patterns, biodiversity, as well as the challenges and sustainability strategies of the system.  Methodology: Data were collected through vegetation analysis and in-depth interviews conducted in durian agroforestry areas in Selat, Jambi Province. Findings: The results show that agroforestry systems in this region are dominated by old durian trees that have strong associations with other species such as Jengkol (Archidendron pauciflorum), Duku (Lansium domesticum), and Rubber (Hevea brasiliensis).  Contribution: This research contributes to biodiversity conservation by providing habitats for local flora and fauna and maintaining ecosystem balance. However, the sustainability of this system faces significant challenges, including land conversion due to population pressure, oil palm plantation expansion, declining durian productivity, and the emergence of the “tasteless durian” phenomenon that reduces fruit quality. Therefore, management strategies focusing on species diversification, tree rejuvenation, and innovations in cultivation technology are essential to sustain durian agroforestry and improve community welfare, particularly in the Selat region

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