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Jurnal Ilmu Dasar
Published by Universitas Jember
ISSN : 24425613     EISSN : -     DOI : https://doi.org/10.19184/jid.v24i2.36657
Core Subject : Education, Engineering,
Control & Systems Engineering Mathematics
Jurnal ILMU DASAR (JID) is a national peer-reviewed and open access journal that publishes research papers encompasses all aspects of natural sciences including Mathematics, Physics, Chemistry and Biology. JID publishes 2 issues in 1 volume per year. First published, volume 1 issue 1, in January 2000 and avalaible in electronically since 2012 with ISSN 1411-5735 (Print) and avalaible in electronically since 2012 with ISSN 2442-5613 (online). Jurnal ILMU DASAR is accredited SINTA 3 by the Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia (Kemendibukristek) No. 152/E/KPT/2023 (September 25, 2023), Ministry of Research, Technology and Higher Education of the Republic of Indonesia (RISTEKDIKTI), No. 200/M/KPT/2020 (December. 23, 2020). All accepted manuscripts will be published worldwide JID has been indexed in DOAJ, Dimension, OCLC WorldCat, PKP Index, Crossref, Google Scholar, Base, Garuda, and OneSearch. JID have been collaborated in KOBI-ID (Konsorsium Biologi Indonesia) and HKI (Himpunan Kimia Indonesia) since 2017.
Arjuna Subject : Matematika - Kontrol dan Optimasi
Articles 10 Documents
 1 
Search results for , issue "Vol. 26 No. 2 (2025)" : 10 Documents clear
Waste Paper Hydrolysis Analysis with Sulfuric Acid Catalyst using Response Surface Methodology Panjaitan, Jabosar Ronggur Hamonangan; Octaviani, Conny; Sinabutar, Renata Margaretta
Jurnal ILMU DASAR Vol. 26 No. 2 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i2.46749

Abstract

Paper waste can cause environmental damage, so paper waste processing must be carried out. Paper waste which is a lignocellulosic compound can be processed with acid hydrolysis process to produce cellulose degradation products. In this research, waste paper hydrolysis was carried out using sulfuric acid with response surface methodology (RSM) optimization which the variables studied were mixing speed, time and S/L ratio. Based on the results of ANOVA test, it was known that mixing speed, time and solid liquid (S/L) ratio did not have a significant influence on %conversion. From the comparison of the independent variables, the mixing speed and time showed significantly influence %conversion compared to the S/L ratio. Higher %conversion was obtained from lower value of mixing speed, time and S/L ratio. In this study, 65% conversion was produced under operating conditions of 175 rpm stirring speed, 30 minutes reaction time, and 1:15 S/L ratio.
Metabolite Profile of arabica Coffee Cascara from Typica Cultivar in Bandung with Different Drying Processes Sururi, Zaki Fahreza; Diana, Sariwulan; Kusdianti, Kusdianti
Jurnal ILMU DASAR Vol. 26 No. 2 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i2.52756

Abstract

Arabica coffee bean (Coffea arabica L.) is Indonesia's leading commodity, with Bandung Regency as the largest producer in West Java. The exocarp and mesocarp of coffee fruits known as cascara have potential health benefits as a beverage. Cascara is usually dried by direct sunlight before consumption, but this process is prone to weather disturbances and contamination. The use of dehydrators is more controlled to maintain metabolite content, but there has been no research on cascara from coffee cultivars in Bandung Regency dried by this method. This study aims to obtain the metabolite profile of Typica arabica coffee cultivar cascara dried using direct sun and dehydrator. The cascara samples were taken from Gunung Puntang Coffee Plantation, Bandung Regency, and extracted using maceration method with 70% ethanol p.a. solvent. The metabolite content was analyzed by Gas Chromatography-Mass Spectrometry (GC-MS), which specifically detects volatile metabolites. Non-volatile compounds were not within the scope of this study. The results showed that direct sun-dried cascara had 6 metabolites, while dehydrator-dried had 15 metabolites. Both samples were dominated by caffeine (sun-dried cascara: 46.61%, dehydrator cascara: 24.44%). Five metabolites were found in both samples, with 1 unique metabolite in solar cascara and 10 unique metabolites in dehydrator cascara. This study showed differences in metabolite content in Typica cultivar cascara with different drying methods.
Crops Classification in Fragmented Agricultural Land Using Integrated Radar and Optical Remote Sensing Satellite Data Darmawan, Sukma Adi; Cahyono, Bowo Eko; Suprianto, Agus; Umniyah, Inas Alfiyatul
Jurnal ILMU DASAR Vol. 26 No. 2 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i2.53691

Abstract

This study aims to classify crops on fragmented agricultural land by integrating radar (Sentinel-1) and optical (Sentinel-2) satellite remote sensing data. The research responds to the pressing issue of decreasing agricultural land in Jember Regency due to land conversion, which threatens food security. Feature-level fusion is applied to combine spectral indices (NDVI, NDWI, NDBI) from Sentinel-2 and radar backscatter characteristics (VV, VH) from Sentinel-1. Classification was performed using the Random Forest algorithm in the Google Earth Engine (GEE) platform. The results showed that the combination of both datasets provided high overall accuracy (81.58%) in classifying eight land cover types including agricultural crops such as paddy, corn, sugarcane, and citrus. This integration enables better monitoring of complex agricultural landscapes, offering a practical tool for sustainable land management.
Immune Response of Nipah Worms (Namalycastis rhodochorde) Following Injection of Pseudonocardia spp.: Indonesia Wiranata, Aufar Ismi; Dea, Uray; Nabila, Vioni Talitha; Putri, Fiqih Fazira; Wibowo, Raynata Zwietenia; Yanti, Ari Hepi
Jurnal ILMU DASAR Vol. 26 No. 2 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i2.53694

Abstract

The nipah worm (Namalycastis rhodochorde) is a Polychaete species found in the nipah (Nypa sp.) mangrove ecosystem of West Kalimantan. Since its identification in 2007, research on this species has been limited. Nipah worms play a crucial role in trophic levels, serving as a food source for various aquatic animals due to their high nutritional content. Although attempts have been made to cultivate nipah worms, these efforts are still hindered by disease outbreaks, one of which is caused by a bacteria. This study aims to investigate the immune response of nipah worms following induction with Pseudonocardia spp. isolated from nipah fronds. The research methodology included the preparation of tools and materials, acclimation of nipah worms, reculturing of Pseudonocardia spp. and the creation of test suspensions, as well as the calculation of the total and differential counts of coelomocytes before and after bacterial induction. The results indicated an increase in the number of several types of coelomocytes in nipah worms, specifically type I by 53,2%, type III by 54%, type IV by 56,2%, and type V by 61,4% after induction with Pseudonocardia spp.
Echinodermata Community Structure in Seagrass Ecosystem at Sijile Beach Baluran National Park Amero, Movhalky Argeswara Delta Cancera; Wimbaningrum, Retno; Sulistiyowati, Hari
Jurnal ILMU DASAR Vol. 26 No. 2 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i2.53695

Abstract

Seagrass ecosystems represent one of the most important coastal ecosystems due to their crucial ecological role in maintaining marine environmental balance.This study aims to identify and analyze the community structure of Echinodermata from the classes Ophiuroidea, Echinoidea, and Holothuroidea in the seagrass ecosystem of Sijile Beach, Baluran National Park. Sampling was conducted using a systematic transect-plot method across 10 transects and a total of 100 plots. The results revealed seven Echinodermata species, with Ophiocoma scolopendrina being the most dominant (6.15 ind/m²). The Shannon-Wiener diversity index (H') was 0.98, indicating low species diversity. This low diversity is attributed to the dominance of specific species and uneven individual distribution. Although seagrass serves as a crucial habitat supporting Echinodermata survival, environmental conditions and species-specific adaptations play key roles in shaping the community structure. These findings highlight the importance of ecological studies for the conservation and management of coastal resources.
Evaluation of Biofertilizer on Growth and Productivity of Solanum lycopersicum L. Febrionny, Princessa Nandita; Azzahra, Annisa; Salsabila, Syarifah; Agustin, Niken; Tamalia, Aqilla Kalyca; Anjani, Ajeng Distya; Junairiah; Fatimah
Jurnal ILMU DASAR Vol. 26 No. 2 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i2.53696

Abstract

The increasing demand for tomatoes has prompted farmers to use chemical fertilizers, which can lead to soil degradation and reduced fertility. This study aims to determine the appropriate dose and frequency of biofertilizer application to enhance the growth and productivity of tomato plants (Solanum lycopersicum L.). The experiment was designed using a Completely Randomized Design (CRD) with 11 treatments, including both negative and positive controls. Three variations in biofertilizer doses were tested (5, 10, and 15 ml/plant), along with three different frequencies of application: once at one week after planting (1 WAP), twice (at 1 and 4 WAP), and three times (at 1, 4, and 8 WAP). Measured parameters included soil fertility (microbial population and functional microbial quality), plant growth (plant height, leaf count, stem diameter), and plant productivity (flower count). Quality of functional microbes were analyzed descriptively. Data of microbial population, plant growth and productivity were analyzed using Kruskal-Wallis and Mann-Whitney tests with a 5% significance level. The results showed significant differences in soil microbial populations and plant height between treatments, although no significant differences were observed in stem diameter, leaf number, or flower number. The treatment with 15 ml/plant applied three times (B15F3) exhibited the highest Relative Agronomic Efficiency (RAE) compared to other biofertilizer treatments (74.63%), but it was still lower than the control (chemical fertilizer). Therefore, higher doses and/or frequencies may be needed to further evaluate the effectiveness of the biofertilizer under test.
Using the Benthic Macroinvertebrates Species Diversity Index to Determine the Water Quality of Antirogo River, Jember Regency Wimbaningrum, Retno; Utami, Eva Tyas; Agustina, Rizka; Setiawan, Rendy
Jurnal ILMU DASAR Vol. 26 No. 2 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i2.53698

Abstract

The Antirogo river, as one of the rivers across the Jember regency, East Java, plays an important role and is used for various activities such as agriculture, domestic, and industrial activities. These anthropogenic activities could affect the water quality of the river and the biota within. A group of river biota affected by anthropogenic activities is the benthic macroinvertebrates. Benthic macroinvertebrates can be used as bioindicators of river water quality. This study aimed to assess the water quality of the Antirogo River using the Shannon Wiener species diversity index (H') based on benthic macroinvertebrate data. Benthic macroinvertebrate sampling was conducted using a Surber net at three research stations. This research found 1703 individuals of benthic macroinvertebrates, which were classified into 16 families, 10 orders, and five classes. The most abundant family was the Heptageniidae, while the least abundant was the Simuliidae. The benthic macroinvertebrates' diversity index (H’) value was 1.67, with the evenness index (E) value at 0.60. Based on the diversity index (H’) value, the water quality in this river was lightly polluted with pollutants that can be in the form of solid materials and toxic compounds.
Partial Analysis of Probiotic Character of Lactic Acid Bacteria from the Intestines of Broilers Supplemented with Fish Protein Hydrolysate (FPH) Nashrullah, Shafa; Utami, Eva Tyas; Purniasari, Fina Yunita; Anggitasari, Dhanti Fatma; Utarti, Esti
Jurnal ILMU DASAR Vol. 26 No. 2 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i2.53701

Abstract

This study aims to analyze partial characteristics of probiotics lactic acid bacteria (LAB) from broiler intestines supplemented with fish protein hydrolysate (FPH) 2% (v/w) in feed. A total of 17 LAB isolates were successfully isolated and characterized morphologically and biochemically (catalase test). The isolate showed diverse morphological and biochemical properties, obtained as many as seven isolates that met the partial characteristics of probiotics, namely U10, U11, U13, U16, U31, U33, and U37 which were Gram-positive and no endospores and catalase formations were found. The tolerance test for acid pH and NaCl performed on the seven BAL isolates showed a diverse survival rate with U11 showing the highest tolerance at pH 2 (11.4%) and NaCl concentration up to 8% (32.4%). These findings highlight seven LAB isolates with partial probiotic properties, providing new insights into the development of probiotic candidates from broiler guts to improve gastrointestinal health and productivity.
Production and Characterization od Xylanase from Actinomyces ATG 70 Using CornCob Xylan Substrate Farrennina, Tasya Preira; Putri, Amelia Fahreza; Arimurti, Sattya; Winarsa, Rudju; Utarti, Esti
Jurnal ILMU DASAR Vol. 26 No. 2 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i2.53702

Abstract

Xilan is a polysaccharide that can be used as a substrate for producing xylanase. Xylan can be obtained from processing xylan-rich agricultural waste such as corn cobs, which contain 12.4% xylan. Xilan can be hydrolyzed into xylose and xylooligosaccharide (XOS) using the enzyme Xilanase. Actinomycetes have dominant xylanolytic species, Actinomyces ATG 70 has semi-qualitative xylanolytic ability with an enzyme activity index of 3.21±0.55 in xylan media. This study was conducted by extracting xylan from corn cobs, rejuvenating Actinomyces ATG 70, preparing the inoculum, creating a standard curve, producing xylanase with pH optimization of the medium, testing xylanase activity, characterizing the pH and temperature of crude xylanase, and identifying the morphology and biochemical characteristics of Actinomyces ATG 70. Optimization of the pH of the xylanase production medium was achieved at pH 8, with xylanase activity of 10.07±0.13 U/mL. The crude xylanase was characterized for pH and temperature effects, and the optimal pH for crude xylanase was found to be pH 6 with xylanase activity of 7.64±0.66 U/mL, and the optimal temperature was 50°C with xylanase activity of 11.17±0.33 U/mL. The identification results showed that Actinomyces ATG 70 belongs to Gram-positive bacteria, with a positive catalase test, white colonies, cream-colored aerial mycelium, and cream-colored pigmentation. The spore structure consists of long chains of conidia, streptococcus-shaped cells, and can form aerial mycelium, thus the isolate belongs to the genus Streptomyces.
Identification of Aquifer Potential in Darungan Village Jember Using Resistivity Vertical Electrical Sounding Method Zannah, Hildatul; Trapsilo Prihandono; Firdha Kusuma Ayu Anggareni
Jurnal ILMU DASAR Vol. 26 No. 2 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i2.46620

Abstract

The people of Darungan Village, Jember, feel the water crisis during the dry season. This research aims to detect aquifer potential in Darungan Village using geoelectric method. This research uses geoelectric method with Vertical Electrical Sounding (VES) technique. The data were processed with IPI2WIN and Rockworks software to produce a 3D cross-sectional model and lithology interpretation. The lithology in the study area consists of andesite, sandstone, silt, claystone, sand, tuff, and pyrite. Potential aquifers with resistivity of 0.5 - 23.24 Ωm are present in all lines, with the best potential located in line 2 (sand, 28.21 meters, 2.119 Ωm, 1.128 meters). Further research is needed to map the aquifer in detail and assess its water quality.

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