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All Journal Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Jurnal Sumberdaya Hayati PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Konservasi Hayati Society : Jurnal Pengabdian dan Pemberdayaan Masyarakat Biological Environment and Pollution Journal of Biotropical Research and Nature Technology
Krestina, Widya
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Energy Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Public Health Social Sciences Other

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Niche Overlap between Pongo pygmaeus wurmbii and Helarctos malayanus Raffles within Small Scale Habitat in Punggualas Area, Sebangau National Park Panda, Adventus; Krestina, Widya
Journal of Tropical Life Science Vol 11, No 3 (2021)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.11.03.08

Abstract

The Sebangau National Park is a major stronghold for Bornean Orangutan (Pongo pygmaeus wurmbii) ranging from 6000 – 9000 individuals. In comparison with Bornean Orangutans, very little ecological fieldwork has been conducted to investigate sun bear biology, and there have been no thorough surveys of distribution or population densities. Thus, this study aimed to investigate the basic information on niche overlap between these two endangered species, specifically to quantify their relationship within the small-scale habitat in Punggualas area, SNP. Data was collected and measured during 15 – 21 June 2019; using line transects methods. A total of 6580 m was walked along 8 consecutive transects. Bear and aging sign follow Augeri protocols. A total 18 printed mark-claw and 17 Orangutan nests was measured according to the mentioned methodology.  The relationships between signs use binary logistic regressions (StatPlus for Mac) and PCA model (using R), while interspecific relationships use Co-Occurrence modeling, ESP for Windows. The results showed that there is no difference between bear sign and orangutan nest (c2: 26.249; df :1, p-value : 0.001); While the results on habitat selection between transects is failed to reject the null hypothesis (c2 = 0.29; df :1, p-value : 0.490). The Mann-Whitney U test, also confirmed no distinctive overlap between the Orangutan and the Sun Bear (Z: 0.84; p-value: 0.40). The co-occurrence simulations also revealed significant results (C-Score = 1.00), by means both target animals co-existed in the habitat.  Obviously, the Orangutan and Sun Bear occupy the same habitat. There is no distinctive overlap between them in terms of tree species selection and having a close interrelationship in terms of feeding ground, whereas the fruiting is not available. The only distinctive difference is that the Bear sign was tend hindering waterlogged terrain.
Antifungal Activity of Endophytic Bacteria Isolated from Dayak Onion (Eleutherine bulbosa) Against Candida albicans Krestina, Widya; Mutiasari, Dian; Panjaitan, Desimaria; Wardhana, Vinsen Willi; Zulviana; Rahmawati, Maynissa; Naibaho, Frans Grovy
Jurnal Sumberdaya Hayati Vol. 10 No. 4 (2024): 2024
Publisher : Departemen Biologi, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsdh.10.4.157-161

Abstract

Candidiasis is a fungal infection due to a decrease in the immune system caused by Candida spp. In general, candidiasis is treated with antifungal drugs, but uncontrolled use can result in the emergence of drug resistance and toxicity. Endophytic bacteria have the potential to be biological control agents against various fungal infections including candidiasis. This study aims to determine the antagonistic activity of endophytic bacteria isolated from Dayak onions and the antifungal activity of its cell-free supernatant (CFS) against Candida albicans. Thirteen isolate strains of endophytic bacteria were used in this study. Antagonistic activity was tested using the agar plug diffusion method. Endophytic bacteria that showed antagonistic activity against C. albicans were cultivated in Nutrient Broth media to produce CFS. The antifungal activity of CFS was tested using the Kirby–Bauer disk diffusion method. The results indicated that six isolates of endophytic bacteria from dayak onions have antagonistic activity against C. albicans. CFS from strain CED4 has a strong antifungal activity against C. albicans with a clear zone diameter of 18.5 mm. Further studies are needed to determine the antifungal compounds produced by CED4 isolates for the development of anticandidal.
Pelatihan Keterampilan Pembuatan Produk Nata De Leri di Kampung Nanas Palangka Raya: Training Skill to Making Nata De Leri Products in Kampung Nanas Community Palangka Raya Krestina, Widya; Permatasari, Silvani; Malinda, Okta; Seiya, Saint; Ramadhani, Ahmad
PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 9 No. 11 (2024): PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institute for Research and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/pengabdianmu.v9i11.8157

Abstract

Nata is a product of fermentation by bacteria Acetobacter xylinum on a substrate containing sugar such as coconut water, pineapple juice or other fruit juice, which uses some of the glucose for metabolic activities and the other part is broken down into a polysaccharide known as extracellular cellulose in gel form. This service is carried out for the people of Kampung Nanas by providing practical training and assistance aims to provide skills to the residents to diversify pineapple product from their plantations which are fermented with a mixture of rice washing water waste, ZA/sprouts, and other ingredients. -Other ingredients become nata which can later add economic value and increase income for the local community. Training is carried out using the experimental learning method. The training began with a presentation and then direct practice in making nata de leri. This activity has stages of preparing tools and materials, providing education through pocket books, direct practice in making nata de leri and harvesting on the 10th day. The taste test results show that 90% really like it, 5% like it and 5% quite like it, the level of texture elasticity shows that 75% are very chewy, 15% are chewy, and 10% are quite chewy, while for color 60% say they are very attractive and 40% are attractive because it’s white.
Etnobotani dan Pengelolaan Tumbuhan Sarang Semut (Myrmecodia sp.) oleh Suku Dayak Ngaju di Desa Rangan Surai, Kabupaten Katingan Wahyunia, Sri; Sunariyati, Siti; Krestina, Widya
Journal of Biotropical Research and Nature Technology Vol. 3 No. 1 (2024): Borneo
Publisher : Prodi Biologi FMIPA Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52850/borneo.v3i1.16682

Abstract

Keanekaragaman jenis tumbuhan di wilayah Kalimantan Tengah merupakan sumber daya alam hayati yang perlu dipertahankan salah satu diantaranya adalah tumbuhan sarang semut (Myrmecodia sp.) karena tumbuhan tersebut memiliki potensi sebagai obat. Tujuan penelitian ini adalah untuk mengetahui pemanfaatan dan pengelolaan tumbuhan sarang semut di Desa Rangan Surai, Kecamatan Marikit, Kabupaten Katingan. Metode penelitian dengan menggunakan metode campuran (Embedded mixed method) yang bersifat deskriptif eksploratif, pendekatan kualitatif dan kuantitatif. Pengambilan sampel di lapangan menggunakan teknik snowball sampling dengan cara wawancara. Penelitian ini dilakukan terhadap partisipan Suku Dayak Ngaju sebanyak 25 informan yang berasal dari Desa Rangan Surai Kabupaten Katingan. Hasil data yang diambil meliputi pemanfaatan dan pengelolaan tumbuhan sarang semut di Desa Rangan Surai. Hasil penelitian menunjukkan bahwa tumbuhan sarang semut masih dimanfaatkan oleh Suku Dayak Ngaju di Desa Rangan   Surai sebagai obat tradisional. Tumbuhan sarang semut dapat digunakan untuk mengobati beberapa penyakit seperti asam lambung 32%, rematik 24%, pemulihan setelah melahirkan 16%, tumor 16%, maag 12%, asma 12%, asam urat 8%, TBC 8%, penyakit gula 8%, dan penyakit kuning 8%. Hasil analisis Informan Agreement Ratio (IAR) sebesar 0,74 atau 74% informan yang diwawancarai menyatakan setuju bahwa tumbuhan sarang semut memiliki manfaat dalam kehidupan sebagai tumbuhan obat. Pengelolaan secara ex-situ tumbuhan sarang semut yang telah diambil dari habitat asalnya dilakukan penanaman kembali anakan tumbuhan sarang semut dengan menempelkannya di pohon yang berada di sekitar rumah penduduk. Sedangkan pengelolaan secara in-situ tumbuhan sarang semut dilakukan dengan dibiarkan tumbuh alami di habitatnya.
Ethnobotany plants used by Ngaju Dayak tribe for COVID-19 therapeutic practices Sunariyati, Siti; Krestina, Widya; Rohimah , Memi Fitri
Biological Environment and Pollution Vol. 4 No. 2 (2024)
Publisher : Association for Scientific Computing, Electronics, and Engineering (ASCEE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31763/bioenvipo.v4i2.831

Abstract

The Ngaju Dayak tribe in Kasongan, Katingan Regency, critically relies on traditional medicinal plants for health, including COVID-19 symptom management. Despite this reliance, crucial knowledge about these immunomodulatory plants remains largely undocumented, posing an urgent risk to their preservation and potential medical application. This study aimed to identify and document the specific plants utilized for COVID-19 treatment—before, during, and after the pandemic—detailing plant parts used, preparation methods, and cultural significance. Employing a mixed-method approach with structured interviews and snowball sampling in Kasongan, the research identified 15 plant species with therapeutic potential, including Peronema canescens, Orthosiphon stamineus, and Zingiber officinale. Leaves were the most frequently used plant part (68.5%), predominantly prepared by boiling (78.2%). Significantly, Peronema canescens emerged as the primary choice during the pandemic (70% fidelity level), while Annona muricata was prominent before and after. Peronema canescens also exhibited the highest Index of Cultural Significance (ICS) at 18. These findings highlight the dynamic ethnobotanical practices of the Ngaju Dayak tribe and underscore the urgent need for conservation and further scientific validation to leverage this traditional knowledge for broader health benefits and ensure community well-being.
Masyarakat Bebas Vektor dan Binatang Pembawa Penyakit dengan Konsep Pemberdayaan Ibu PKK Dewi, Mirnawati; Krestina, Widya; Wanto, Wahyu Anggar
Society : Jurnal Pengabdian dan Pemberdayaan Masyarakat Vol. 5 No. 2 (2025): Vol.5 No.2, April 2025
Publisher : Universitas Dinamika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37802/society.v5i2.888

Abstract

This is a new author guidelines and article template of Manhaj: Jurnal Penelitian Vectors are insects, rodents, birds, or other animals that can carry disease pathogens. The most common vectors are blood-sucking insects, such as mosquitoes and ticks. Vector-borne diseases occur in animals and humans. However, animals can sometimes carry harmful germs that can spread to humans and cause diseases – these are known as zoonotic diseases. Zoonotic diseases are caused by harmful germs such as viruses, bacteria, parasites, and fungi. This service aims to increase public knowledge about vector bioecology and disease-carrying animals so that the community can carry out appropriate control independently. The activity method is in the form of material delivery, answers, and tests. The results of the pre-test showed that 75% of participants did not understand that what was a vector and 50% of participants did not know the type of vector. 56.25% of participants did not know that rats played the role of disease carriers. The results of the post test showed that 100% of the participants knew about the vector and the animal that carried the disease.
Etnobotani Tumbuhan Obat Tradisional yang Dimanfaatkan Suku Dayak Ngaju di Kelurahan Tewah Kabupaten Gunung Mas Sintia , Vinni; Sunariyati, Siti; Krestina, Widya
Konservasi Hayati Vol 21 No 1 (2025): APRIL
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/hayati.v21i1.37496

Abstract

The Ngaju Dayak tribe in Tewah Village still uses plants as medicine to cure various diseases. This study aims to identify the species and parts of medicinal plants used by the Dayak Ngaju tribe in Tewah Village, as well as the processing methods and use values of these plants. This descriptive study uses qualitative and quantitative approaches (mixed methods research) and was conducted in Tewah Village. The stages of the research process consist of field observations and the selection of informants to be interviewed, with the latter being determined by the established criteria. The interview was conducted using a semi-structured interview technique, in which plant samples were obtained with the assistance of informants. The plant samples found are then documented, described, identified, and added to a herbarium collection. The result of the research obtained 44 species of medicinal plants that have been utilized for medicinal purposes by the Ngaju Dayak Tribe. The various components of plants that are utilized for medicinal purposes include roots, stems, leaves, fruits, branches, twigs, and sap. The processing of the plants utilized in this method encompasses a variety of techniques, including boiling, heating, pounding, squeezing, baking, and soaking. There are 2 species of medicinal plants, namely plants kayu sambung maut (Condiaeum variegatum) and kangkawang kapas (Leea indica), that have a Use Value (UV) higher than the other 42 plant species. The Relative Use Value (RUV) of the 4 plant species that were predominantly utilized was 4.19.
Co-Authors Adventus Panda Desimaria Panjaitan Dian Mutiasari, Dian Frans Grovy Naibaho Malinda, Okta Mirnawati Dewi, Mirnawati Permatasari, Silvani Rahmawati, Maynissa Ramadhani, Ahmad Rohimah , Memi Fitri Seiya, Saint Sintia , Vinni Siti Sunariyati Vinsen Willi Wardhana Wahyunia, Sri Wanto, Wahyu Anggar Zulviana