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AL-ULUM: JURNAL SAINS DAN TEKNOLOGI
Published by Universitas Islam Kalimantan Muhammad Arsyad Al Banjari
ISSN : -     EISSN : 24774731     DOI : 10.31602
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Energy
Al Ulum: Jurnal Sains dan Teknologi = Al Ulum: Journal of Science and Technology (JST) is an international and open access journal with registered number ISSN 2477-4731 (Online). JST is a peer-reviewed journal published three times a year (April, August and December) by UPT Publication and Journal Management, Islamic University of Kalimantan. JST is intended to be the journal for publishing articles reporting the results of science and technology research. The JST invites manuscripts in the various topics of science and technology include natural sciences, engineering, computer science and technology, health and medical sciences, and agriculture.
Arjuna Subject : Umum - Umum
Articles 257 Documents
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CHARACTERIZATION OF BIODEGRADABLE FOAM FROM OIL PALM EMPTY FRUIT BUNCH CELLULOSE, CASSAVA STARCH, AND POLYVINYL ALCOHOL Idha Silviyati; Aisyah Suci Ningsih; Desti Lidya; Endang Supraptiah; Sri Murda Niati; Bimo Satrio
AL ULUM: JURNAL SAINS DAN TEKNOLOGI Vol 12, No 1 (2026)
Publisher : UPT Publication and Journal Management, Islamic University of Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/jst.v12i1.22977

Abstract

Styrofoam is widely used for food packaging, but its poor degradability and harmful compounds pose serious environmental and health concerns. This study developed biodegradable foam from oil palm empty fruit bunch (OPEFB) cellulose and cassava starch through thermopressing, with polyvinyl alcohol (PVA) added to improve product performance. The formulations varied in cassava starch-to- OPEFB cellulose ratios (1:1, 2:1, 3:1, and 4:1) and PVA concentrations (0%, 5%, and 10%). Results showed that increasing the starch ratio and PVA concentration significantly affected water absorption, tensile strength, thickness, and biodegradation rate. The optimum formulation was obtained at a 4:1 starch-to-cellulose ratio with 10% PVA, yielding water absorption of 10.04%, tensile strength of 2.362 MPa, thickness of 0.114 mm, and complete biodegradation within 48.16 days. All biofoam characteristics complied with SNI 7188.7:2016 and JIS Z1707:2017 standards.
DESIGN AND USABILITY EVALUATION OF A MOBILE TOURISM APPLICATION BASED ON USER-CENTERED DESIGN APPROACH Ricco Herdiyan Saputra; Mezan El-Khaeri Kesuma
AL ULUM: JURNAL SAINS DAN TEKNOLOGI Vol 12, No 1 (2026)
Publisher : UPT Publication and Journal Management, Islamic University of Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/jst.v12i1.22788

Abstract

Mobile tourism applications play a crucial role in supporting travelers’ information search and trip planning; however, many existing systems still suffer from usability limitations that affect user satisfaction and continued use. This study aims to design and evaluate a mobile tourism application prototype using a user-centered design (UCD) framework combined with the System Usability Scale (SUS) for quantitative validation. The development process involved user needs identification, iterative prototyping, and structured usability testing with 20 participants aged 18–35 years. The evaluation results yielded a mean SUS score of 82.5 (SD = 6.8), categorizing the prototype within the “Excellent” usability level. All participants successfully completed the assigned tasks, indicating strong learnability and interaction clarity. These findings demonstrate that integrating UCD with standardized usability benchmarking provides measurable evidence for improving mobile tourism interface quality and supports early-stage validation prior to full-scale implementation.
Front Matter Al Ulum: Journal of Science and Technology Vol. 12, No. 1, April 2026 Front Matter
AL ULUM: JURNAL SAINS DAN TEKNOLOGI Vol 12, No 1 (2026)
Publisher : UPT Publication and Journal Management, Islamic University of Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

VALIDATION OF QUALITY OF LIFE AND STIGMA QUESTIONNAIRES IN POST-TB BANJAR POPULATION Juwita Ramadhani; Dyah Aryani Perwitasari; Haafizah Dania
AL ULUM: JURNAL SAINS DAN TEKNOLOGI Vol 12, No 1 (2026)
Publisher : UPT Publication and Journal Management, Islamic University of Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/jst.v12i1.22841

Abstract

Tuberculosis (TB) remains a major public health problem with persistent consequences beyond microbiological cure. Post-TB individuals frequently experience impaired health-related quality of life and social stigma influenced by sociocultural context. Among the Ethnic Banjar population in Indonesia, culturally validated instruments for assessing these outcomes remain limited. This study aimed to evaluate the validity and reliability of the HRQ-6D and Van Rie TB Stigma Scale for post-TB populations of Ethnic Banjar. A cross-sectional psychometric study was conducted among 134 respondents (67 post-TB patients and 67 community members). Construct validity was assessed using item–total correlations, Kaiser–Meyer–Olkin (KMO), and Bartlett’s test of sphericity. Internal consistency was evaluated using Cronbach’s alpha. All HRQ-6D items were valid (r=0.284–0.832; α=0.935). The stigma scale demonstrated acceptable validity, except one item, with strong reliability (α=0.927 patients; 0.843 community). Both instruments are valid and reliable for assessing HRQoL and stigma in post-TB Ethnic Banjar populations.
ANTITUBERCULOSIS POTENTIAL OF Caesalpinia sappan BIOACTIVE COMPOUNDS USING IN SILICO APPROACH Arafah Nurfadillah; Julianti Bunga; Nur Indah Dg Toba; A Irham Asdar
AL ULUM: JURNAL SAINS DAN TEKNOLOGI Vol 12, No 1 (2026)
Publisher : UPT Publication and Journal Management, Islamic University of Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/jst.v12i1.20183

Abstract

Caesalpinia sappan has been reported to possess a plethora of pharmacological effects, including immunomodulatory, antibacterial, astringent, and antitumor properties. The present study set out to ascertain the benefits of the active compounds Caesalpinia sappan in terms of their ability to inhibit the action of the Arabinosyltransferase C enzyme in M. tuberculosis. This research was conducted using an in-silico approach with the following applications: PyMOL, PyRx, AutoDock 4, Biovia Discovery Studio, and Toxtree. The results demonstrated that among the 25 test compounds, gallic acid exhibited the highest Pa value. The gallic acid compound has been found to have the lowest ∆G free bond energy (-7.0 kcal/mol), which is lower than the native ligand and has more hydrogen bonds than the ethambutol. Consequently, gallic acid compounds can impede the function of the Arabinosyl Transferase C receptor.
ANTIBACTERIAL ACTIVITY OF METHANOL EXTRACT FROM INGGILI FRUIT (Xylocarpus granatum) AGAINST Propionibacterium acnes AND Escherichia coli USING WELL DIFFUSION METHOD Wahyu Isnaini Nurhidayanti; Achmad Kadri Ansyori; Reksi Sundu
AL-ULUM: JURNAL SAINS DAN TEKNOLOGI Vol 9 No 3 (2023)
Publisher : UPT Publication and Journal Management, Islamic University of Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/jst.v9i3.12155

Abstract

Inggili is a type of mangrove plant that has been traditionally used by the community for medicine. It contains many active compounds that function as antibacterials. Based on empirical data, inggili fruit is used to remove acne on the skin and diarrheal diseases. This study aims to determine the antibacterial activity of methanol extract of inggili pulp in inhibiting Propionibacterium acnes and Escherichia coli bacteria using the sumuran diffusion method. The research conducted is experimental. The object under study was the antibacterial activity of inggili fruit extract against Propionibacterium acnes and Escherichia coli bacteria. Antibacterial activity was tested using the sumuran diffusion method with extract concentrations of 10%, 15%, and 20%. The negative control used was 1% DMSO and the positive control used was 0.1% chloramphenicol
MULTIVARIATE SINGULAR SPECTRUM ANALYSIS MODEL IN FORECASTING RED CHILI AND CAYENNE PEPPER PRICES Radita Rahma; Rina Filia Sari; Sajaratud Dur
AL-ULUM: JURNAL SAINS DAN TEKNOLOGI Vol 10 No 1 (2024)
Publisher : UPT Publication and Journal Management, Islamic University of Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/jst.v10i1.14281

Abstract

North Sumatra is one of the provinces that contributes the most prominent agricultural commodities of red chilies and cayenne peppers in Indonesia. This study aims to determine the outcomes of price forecasts for cayenne and red chilies in the province of North Sumatra. The method used is multivariate singular spectrum analysis. Results were grouped into six groups based on 12 eigenvectors with a forecast length of 9 monthly periods. Further, the level of accuracy was obtained from MAPE for each variable, with the highest MAPE being 30% for the curly red chili, 27.55% for the big red chili, and the lowest at 23.44% for mixed cayenne pepper. So, the price forecast for red chilies and cayenne peppers in North Sumatra Province for October 2023 to June 2024 using the Multivariate Singular Spectrum Analysis model is included in the forecast category with reasonable capabilities.
DETERMINATION OF ANTIOXIDANT ACTIVITY IN OIL AND RED FRUIT JUICE (Pandanus conoideus Lamk) WITH DPPH METHOD Ees Aisyah Al failah; Rizki Febriyanti; Wilda Amananti
AL-ULUM: JURNAL SAINS DAN TEKNOLOGI Vol 10 No 1 (2024)
Publisher : UPT Publication and Journal Management, Islamic University of Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/jst.v10i1.14371

Abstract

Antioxidant compounds play an essential role in health because they can reduce the risk of chronic diseases such as cancer and coronary heart disease. This study analyzed the antioxidant activity of red fruit oil and juice. This study used an experimental method with oil and juice obtained through boiling for 4-5 hours. The stages of the study include flavonoid qualitative tests and antioxidant activity tests using the DPPH method using UV-Vis Spectrophotometers. Based on the research results, oil and red fruit juice contain flavonoids that have the potential to be antioxidants. Antioxidant activity test with the DPPH method showed IC50 in red fruit oil products on the market at 30.11 ppm and red fruit juice at 31.80 ppm, showing vigorous antioxidant activity compared to homemade red fruit oil with an IC50 of 85.98 ppm.
LC-MS-BASED IDENTIFICATION OF BIOACTIVE COMPOUNDS FROM THE ETHANOLIC LEAF EXTRACT OF Pellacalyx fimbripetalus Korth Nikho Prasetyo Pratama; Muhammad Fauzi; Nily Su’aida
AL-ULUM: JURNAL SAINS DAN TEKNOLOGI Vol 11 No 3 (2025)
Publisher : UPT Publication and Journal Management, Islamic University of Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/jst.v11i3.20152

Abstract

The ethanolic leaf extract of Pellacalyx fimbripetalus (locally Tabuluh) was analyzed by Liquid Chromatography–Mass Spectrometry (LC-MS) to profile its bioactive constituents. Seventeen compounds were putatively identified, including tropane-type alkaloids, phenolic acids, flavonoids, glycosides, and fatty acids. Notably, orientin (a flavonoid C-glycoside) and chlorogenic acid derivatives were detected, which are known for antidiabetic and antioxidant activities. Several unusual compounds (e.g., a phenolic alkaloid and an iridoid-like glycoside) were present, potentially representing novel or understudied constituents. Traditional usage of P. fimbripetalus leaves in Bornean ethnomedicine for ailments such as cancer is supported by the discovery of diverse phytochemicals. This first LC-MS profiling of P. fimbripetalus leaf extract provides a basis for further pharmacological evaluation, especially for antidiabetic potential.
ANTITUBERCULOSIS POTENTIAL OF Caesalpinia sappan BIOACTIVE COMPOUNDS USING IN SILICO APPROACH Arafah Nurfadillah; Julianti Bunga; Nur Indah Dg Toba; A Irham Asdar
AL-ULUM: JURNAL SAINS DAN TEKNOLOGI Vol 12 No 1 (2026)
Publisher : UPT Publication and Journal Management, Islamic University of Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/jst.v12i1.20183

Abstract

Caesalpinia sappan has been reported to possess a plethora of pharmacological effects, including immunomodulatory, antibacterial, astringent, and antitumor properties. The present study set out to ascertain the benefits of the active compounds Caesalpinia sappan in terms of their ability to inhibit the action of the Arabinosyltransferase C enzyme in M. tuberculosis. This research was conducted using an in-silico approach with the following applications: PyMOL, PyRx, AutoDock 4, Biovia Discovery Studio, and Toxtree. The results demonstrated that among the 25 test compounds, gallic acid exhibited the highest Pa value. The gallic acid compound has been found to have the lowest ∆G free bond energy (-7.0 kcal/mol), which is lower than the native ligand and has more hydrogen bonds than the ethambutol. Consequently, gallic acid compounds can impede the function of the Arabinosyl Transferase C receptor.

Page 24 of 26 | Total Record : 257

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