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INDONESIA
HAYATI Journal of Biosciences
Published by Institut Pertanian Bogor
ISSN : 19783019     EISSN : 20864094     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences
HAYATI Journal of Biosciences (HAYATI J Biosci) publishes articles and short communication in tropical bioscience fields such as development, biotechnology, biodiversity and environmental issues. HAYATI J Biosci covers wide range of all life forms topics including virus, microbes, fungi, plants, animal and human. HAYATI J Biosci has been also indexed/registered in Crossref, DOAJ, CABI, EBSCO, Agricola and ProQuest.
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Articles 25 Documents
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Search results for , issue "Vol. 33 No. 1 (2026): January 2026" : 25 Documents clear
Genetic Diversity of Black Pepper in Bangka Island Based on SSR Markers Prayoga, Gigih Ibnu; Salmi; Saputra, Herry Marta; Mustikarini, Eries Dyah; Derajat, Alfan
HAYATI Journal of Biosciences Vol. 33 No. 1 (2026): January 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.1.8-15

Abstract

The Bangka Belitung Islands Province is a major centre of black pepper production in Indonesia. Black pepper production in Indonesia has dropped, so it needs to be increased using superior varieties. Identifying the genetic diversity of black pepper plants is important for breeding superior varieties. The study's objective was to determine the genetic diversity and relationships of Bangka landrace black pepper using SSR markers. This research was conducted from June to August 2024 at the Biology Laboratory, Universitas Bangka Belitung. The black pepper genotypes used in this study were as follows: Lampung Daun Kecil (LDK), Nyelungkup, Petaling 1, Chunuk, Peremis, Balunijuk 1, Balunijuk 2, and Jerambah Gantung. The SSR markers employed in this study included Psol3, Psol6, Psol9, Psol10, Psol11, Psol17, and Psol19. The genetic relationship of Bangka black pepper was analysed using the UPGMA method. Genetic relationship revealed two main clusters of eight Bangka black pepper genotypes. Cluster I consisted of the Peremis and Balunijuk 2 genotype, while the remaining six genotypes were contained within cluster II. The structure population exhibited two subpopulations, with FST values of 0.30 and 0.61, respectively. The results showed that the seven primers used produced polymorphic (82.1%) and monomorphic (17.9%) bands on eight pepper genotypes. The Polymorphic Information Content (PIC) value of all primers tested was found to be medium, with the exception of Psol9, which exhibited a low PIC value. The average PIC value was 0.32, which is categorized as medium.
Evaluation of Agronomic Performance and Genetic Diversity in Indonesian Pigmented Rice Using SCoT (Start Codon Targeted) Markers Safitri, Vika Ayu; Fatimah, Fatimah; Wahyu, Yudiwanti; Ardie, Sintho Wahyuning; Mahrup, Mahrup
HAYATI Journal of Biosciences Vol. 33 No. 1 (2026): January 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.1.103-113

Abstract

Indonesia is rich in biodiversity, including rice (Oryza sativa L.), one of the most important and widely cultivated crops. However, the utilization of local Indonesian rice germplasm in breeding programs remains limited due to the lack of reliable characterization data. Therefore, it’s essential to establish a reliable method to ensure variety protection by breeders. In addition, understanding the relationship between morphological traits and genetic diversity is crucial for a targeted breeding study aimed at evaluating genetic diversity among 12 local rice genotypes from Indonesia through agronomic traits and molecular analysis using start codon targeted (SCoT) markers. Statistical analyses, including cluster and diversity indices, were applied to interpret the data. Characterization was conducted based on the descriptors from The International Rice Research Institute (IRRI) and Bioversity International, while molecular analysis employed 23 selected SCoT primers. The effectiveness of the markers was assessed through polymorphism percentage, PIC values, and cluster analysis. A polymorphism level of 69% was observed, with PIC values ranging from 0.3610 to 0.4646, suggesting that the SCoT markers used provided adequate informativeness for diversity analysis. The study revealed high genetic variability, with heritable traits and informative SCoT markers, demonstrating their potential for pre-breeding and diversity analysis.  
Modification of the Kato-Katz Diagnosis Technique Using “Canang” Flower Waste Extract as a Staining for Ascaris lumbricoides Eggs Maheswari, Kadek Indira; Janendra, Putu Sathiya Adi; Widnyana, I Komang Tri Yasa; Mahayana, Dewa Gede Putra; Pramesti, Komang Kirana Ardhia; Dwisaputra, Indra; Permasutha, Made Bayu; Wiguna, Nyoman Intan Permatahati; Giri, Made Kurnia Widiastuti
HAYATI Journal of Biosciences Vol. 33 No. 1 (2026): January 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.1.71-78

Abstract

Helminthiasis, particularly that caused by Ascaris lumbricoides, is a major global health issue, especially in areas with poor sanitation. One method for preventing and controlling Ascaris lumbricoides infection is through identification via the Kato-Katz diagnostic technique. The use of synthetic dyes, such as methylene blue, in the Kato-Katz method raises concerns for both human health and the environment. In humans, methylene blue causes skin irritation, gastrointestinal issues upon ingestion, and systemic effects. Furthermore, its environmental impact includes reducing light penetration and acting as a toxic component in food chains. An alternative approach involves utilizing post-use offerings from Hindu rituals in Bali, known as canang, which consist of flower components such as Impatiens balsamina L. and Tagetes erecta. The natural dyes found in these flowers serve as an alternative to traditional staining methods. This study examined the efficacy of flower extracts as stainings using the cellophane absorption test, helminth egg detection and morphology identification, pH test, and measurement of heavy metal concentration. The dye made from canang flower waste at 3% did not differ much from manufactured stainings. Thus, canang flower waste is a safe alternative.
Effect of Porang (Amorphophallus muelleri Blume) Flour Diet on Postprandial Blood Sugar Rates and Insulin Resistance in Male Wistar Rats (Rattus norvegicus) Diabetes Mellitus Nathasia; Widhiartini, Ida Ayu Alit; Dwipayana, I Made Pande; Wahyuni, Nila; Maratni, Ni Putu Tesi; Hendrayana, Made Agus
HAYATI Journal of Biosciences Vol. 33 No. 1 (2026): January 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.1.95-102

Abstract

Medical nutrition therapy is essential in diabetes management, especially as diabetes is often linked with aging. Porang tuber flour contains glucomannan, a compound with potential glucose-lowering effects. This study aimed to evaluate the effect of porang flour feeding frequency on 2-hour postprandial blood glucose (2hPPBG) and HOMA-IR in diabetic rats. Using a quasi-experimental pre-test and post-test control group design, 21 male Wistar rats were induced with diabetes via streptozotocin and nicotinamide, then randomly assigned to three groups: G0 (control, given aquadest), G1 (porang flour 300 mg/kg BW daily), and G2 (porang flour 300 mg/kg BW every two days). Five rats died during treatment. Wilcoxon test results showed a difference in 2hPPBG levels between each group before and after treatment. There was no decrease in G0 (p = 0.893), but a decrease in G1 (p = 0.043) and G2 (p = 0.028). The difference between HOMA-IR before and after treatment did not decrease in groups G0 (p = 0.345), G1 (p = 0.138), and G2 (p = 0.249). Post hoc test for 2hPPBG levels between groups showed a significant difference between G0 and G1 (p<0.001), a significant difference between G0 and G2 (p<0.001), and no significant difference between G1 and G2 (p = 0.135). One-way ANOVA test of HOMA-IR showed no significant difference between G0, G1, and G2 (p = 0.148). It was concluded that porang flour can reduce 2hPPBG, but not HOMA-IR. There was no difference in 2hPPBG levels between administering porang flour daily and every other day.
Development of a Fluorescence Immunoassay Based on Curcumin Carbon Dots-labeled IgY Antibodies for SARS-CoV-2 Detection Rachmadani, Nisa Amanda; Soetomo, Meilisa Keizia; Taharuddin, Audrey Angelina Putri; Santika, Arum Sinda; Abdillah, Oktaviardi Bityasmawan; Permatasari, Fitri Aulia; Iskandar, Ferry; Rachmawati, Heni; Fibriani, Azzania
HAYATI Journal of Biosciences Vol. 33 No. 1 (2026): January 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.1.44-57

Abstract

Carbon dots (CDs) are widely utilized in biomedical applications as fluorescent labels for imaging and diagnostics due to their excellent biocompatibility and superior optical properties. These advantages often make CDs a substitute for organic fluorescent dyes, which suffer from low emission intensity and poor photostability when interacting with biomolecules. Moreover, carbon-based materials are eco-friendly and can be synthesized from natural sources, such as curcumin, a chromophore compound abundantly available in Indonesia. Therefore, this study conducted a preliminary investigation on curcumin CDs-labeled IgY antibodies (IgY-cur CDs) for fluorescence immunoassay of SARS-CoV-2 in rapid test applications. The synthesis of the fluorescent label involved a carbodiimide coupling reaction using EDC/NHS agents to conjugate IgY antibodies with curcumin CDs. The IgY-cur CDs conjugate was confirmed to detect antigens through FRET immunosensor mechanisms, showing a significant increase in fluorescence intensity with increasing antigen concentrations (p < 0.05), with a minimum sample concentration of 10 ng. Furthermore, the IgY-CDs cur conjugate was applied as a reporter in a fluorescence-based LFIA using a sandwich assay format. The test strip successfully detected synthetic multiepitope SARS-CoV-2 antigens with an estimated detection limit of 54.28 µg and nasopharyngeal samples from confirmed COVID-19 patients within 35 minutes of operation. The test strip was evaluated to be stable under cold storage at 4°C for up to 3 weeks. In conclusion, curcumin CDs-labeled IgY antibodies demonstrate promising potential for further development as fluorescent labels in rapid diagnostic applications targeting SARS-CoV-2.
Therapeutic Potential of Synbiotic Roselle Extract Yogurt in Modulating Inflammatory Markers and Oral Microbiota in a Rat Model of 5-Fluorouracil-Induced Oral Mucositis Sena, Anantha; Mudigdo, Ambar; Arief, Irma-Isnafia; Indarto, Dono
HAYATI Journal of Biosciences Vol. 33 No. 1 (2026): January 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.1.58-70

Abstract

Mucositis is a common complication in cancer patients undergoing 5-fluorouracil (5-FU) chemotherapy. Roselle (Hibiscus sabdariffa) extract in synbiotic yogurt could be a beneficial alternative because it might change the inflammatory response and oral microbiota. The study aimed to investigate the effects of synbiotic roselle extract yogurt on inflammatory responses and oral microbiota in oral mucositis caused by 5-FU. An experimental study with twenty-four Sprague-Dawley rats divided into four groups (n=6): healthy control (NC), disease control (PC), synbiotic roselle extract yogurt therapy (P1), and standard therapy (P2) groups. This study evaluated the number of bacterial colonies, expression of COX-2 and caspase-1, and levels of IL-1β and VEGF (days 4 and 7). The P1 group had a significantly increased beneficial lactic acid bacteria (6.91±0.87) and a decrease in pathogenic bacteria, including Staphylococcus aureus (3.89±0.05), Escherichia coli (0), and Enterobacter aerogenes (1.78±0.29), compared to the PC group. Additionally, there was a statistically significant increase in VEGF levels in the tissue (0.07±0.03 ng/mL), a decrease in serum IL-1β levels (48.02±10.29 pg/mL), and an expression of caspase-1 and COX-2 compared to the PC group (p<0.05). Synbiotic roselle extract yogurt shows promise as a therapeutic strategy for managing mucositis by restoring microbial balance and mitigating inflammation.
Engineering of LysR-type Regulator DmlR in Burkholderia ubonensis CP01 to Enhance Its Antifungal Production against Ganoderma boninense Budinarta, Widyah; Purnamasari, Maria Indah; Hermosaningtyas, Anastasia Aliesa; Arifudin Rafif , Muhammad Ghildan; Prihatna , Cahya; Suwanto, Antonius
HAYATI Journal of Biosciences Vol. 33 No. 1 (2026): January 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.1.28-43

Abstract

The utilization of an antifungal substance, occidiofungin and burkholdine, derived from Burkholderia ubonensis CP01 has displayed promising results in the management of basal stem rot caused by Ganoderma boninense. The study aims to further enhance the antifungal production of B. ubonensis CP01 through genetic modification. Through comparative genetic analysis, we identified the dmlR gene in B. ubonensis CP01, which is homologous to the scmR gene, a LysR-type transcriptional regulator (LTTR), in B. thailandensis. Deleting the dmlR gene in CP01 resulted in a complete loss of antifungal synthesis. In contrast, overexpression of this gene led to a substantial increase in antifungal production, as determined by an agar well diffusion assay. These findings suggest that dmlR acts as a positive regulator of antifungal gene expression in B. ubonensis CP01. RP-HPLC analysis revealed that the mutant strain overexpressing the dmlR gene (mutant WB12) produced a higher peak at the 24-25 minute elution time. Previous high-resolution mass spectrometry analysis by our group identified the compound at this peak as six analog compounds with monoisotopic masses similar to those of cyclic lipopeptides, including occidiofungin and burkholdine. The WB12 mutant exhibited approximately 15% higher concentrations of antifungal compounds than the wild type. Additionally, whole genome sequencing confirmed that the introduced dmlR gene had been integrated into the locus on chromosome 2 of B. ubonensis CP01. LTTRs play a pivotal role in regulating the production of antifungal agents in CP01. Furthermore, it highlights the potential for manipulating LTTRs to enhance the desirable characteristics of the Burkholderia genus in regard to the production of secondary metabolites.
Assessing Methods for Enhanced Recovery of Touch DNA from Fingerprints: A Pilot Study Saamia, Vira; Yudianto, Ahmad; Nurjayadi, Muktiningsih; Novitasari
HAYATI Journal of Biosciences Vol. 33 No. 1 (2026): January 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.1.79-86

Abstract

The rapid advancement of science and technology, particularly in forensic science, has significantly enhanced crime investigation methodologies. One such advancement is the utilization of Scientific Crime Investigation methods, specifically the analysis of touch DNA from fingerprints. This research investigates the efficiency of fingerprint powders and swabbing agents in improving the quality and quantity of touch DNA for forensic applications. Touch DNA, derived from cellular materials like sweat and skin cells, presents a valuable source of genetic material for identification purposes. The study involved experimental analyses using Regular Silk Black Fingerprint Powder and Magnetic Dual-Purpose Powder, coupled with non-ionic detergent surfactants as swabbing agents. DNA samples were collected from volunteers with varying DNA shedding levels, processed, and analyzed using quantitative PCR and capillary electrophoresis. Results indicated that fingerprint powders significantly reduce the quantity and quality of recovered DNA due to DNA damage caused by the powders' chemical composition. Conversely, using non-ionic surfactants like Triton™ X-100 in swabbing improved DNA recovery and stability, leading to more complete DNA profiles. This study underscores the importance of optimizing fingerprint powder formulations and DNA sampling techniques to enhance forensic DNA analysis. The findings advocate for the development of less damaging fingerprint powders and improved DNA extraction protocols to preserve the integrity of touch DNA evidence in forensic investigations.
Bioprospecting Bacteriocinogenic Lactic Acid Bacteria from Algerian Raw Goat Milk and Traditional Cheeses Boutaleb , Naima; Mechai, Abdelbasset; Arhab, Rabah; Debabza, Manel
HAYATI Journal of Biosciences Vol. 33 No. 1 (2026): January 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.1.16-27

Abstract

Artisanal fermented dairy preparation represents one of the oldest and most prevalent methods of food preservation, having enabled rational management of valuable food resources for millennia across various cultures worldwide, particularly those of the southern Mediterranean countries. Bacteriocinogenic lactic acid bacteria (LAB) that are contained in traditional fermented milk are considered good sources of promising antimicrobial bioactive compounds. A total of 58 LAB were isolated and identified based on phenotypic characteristics and then tested for their antibacterial effectiveness against both Gram-positive and Gram-negative bacteria that cause food spoilage. Eight strains among selected LAB produce bacteriocin-like inhibitory substances (BLIS), which have a broad antibacterial spectrum against tested species. The strains were identified by 16S rRNA gene sequence analysis. All generated BLISs were fully inactivated by proteolytic enzymes while remaining unaffected by catalase, indicating their proteinaceous nature. The BLIS produced by Lactiplantibacillus plantarum NBC101174 was concentrated by the addition of ammonium sulfate to a final concentration of 80%, which allowed for an increase in the specific activity of the bacteriocin from 21.05 to 106.00 AU/mg, increasing the specific factor of 5.04 fold. The inhibitory substance produced by Lpb. plantarum NBC101174 exhibits a bactericidal effect, leading to cell lysis and a 99.9% lethality rate against the indicator strain. The findings of the current study could increase our understanding of bacteriocinogenic LAB diversity. It could also be concluded that LAB isolated from Algerian fermented milk provides a promising source for bacteriocins that can be used safely as bio-preservation of various foods produced under different storage conditions.
New Distribution Record of Tetrigona apicalis (Smith, 1857)  (Hymenoptera: Apidae: Meliponini) in Ujung Kulon National Park, Indonesia Miharja, Jajang; Atmowidi, Tri; Priawandiputra, Windra; Perwitasari, Dyah; Kahono, Sih
HAYATI Journal of Biosciences Vol. 33 No. 1 (2026): January 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.1.1-7

Abstract

Ujung Kulon National Park (UKNP) is located in the western part of Java Island, Indonesia. This national park was designated a Natural World Heritage Site by UNESCO in 1992. The stingless bee species, Tetrigona apicalis (Apidae: Meliponini), has not previously been documented in specific locations on Java Island. In this study, we found a new distribution record of T. apicalis in UKNP. Here, we described of its nest-entrance characteristics, morphological features, and morphometry. The colony of bee species was found in the forest of Mount Honje, UKNP, Indonesia, at an altitude of 883 m asl. The nest is located in a Tiliaceae tree cavity at a height of 420 cm from the ground surface. The shape of the nest entrance of the bee species was irregular, with a longitudinal diameter of 3.2 cm and a vertical diameter of 5.7 cm, and it had a light brown color. Locally, this bee is known as teuwel meunyan, referring to a traditional incense burner due to the aromatic scent associated with its use in religious rituals. The findings contribute to the current knowledge of the distribution of T. apicalis on Java Island, particularly within UKNP, and provide data for future conservation and sustainable utilization efforts.

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