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Indonesian Journal of Applied Research (IJAR)
Published by Universitas Djuanda Bogor
ISSN : -     EISSN : 27226395     DOI : https://doi.org/10.30997/ijar.v1i3
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT
Indonesian Journal of Applied Research (IJAR), e-ISSN 2722-6395 is high quality open access peer reviewed research journal that is published by Universitas Djuanda (UNIDA). IJAR dedicated to publish significant research findings in the field of Applied Sciences, Engineering &Technology. We welcome original empirical research articles with novel perspectives and/or methodological approaches that would appeal to an international readership. We do not accept unsolicited conceptual and theoretical papers. The journal is designed to serve researchers, developers, professionals, graduate students and others interested in state-of-the art research activities in Applied Sciences, which covers four (2) majors areas of research that includes Applied Sciences, Engineering &Technology. The journal was first published in April 2020 and published every April, August and December.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 110 Documents
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Proportion of Bacillary and Morphological Indices of Untreated and Treated Suspected Leprosy Slit Skin Smear Indriani Silvia; Parwati, Ida; Andriyoko, Basti; Rachmawati, Banundari; Sukartini, Ninik
Indonesian Journal of Applied Research (IJAR) Vol. 6 No. 1 (2025): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v6i1.599

Abstract

Indonesia is the third highest number of leprosy in the world with pockets of high endemicity spread across the archipelago. Leprosy diagnosis in control program include finding of acid fast bacilli (AFB) from slit skin smear (SSS) that assessed for the bacillary index (BI). The solid AFB form assessed for morphological index (MI). This study aimed to analyze the proportion of BI and MI of untreated and treated suspected leprosy SSS. This was a retrospective observational study on BI and MI from 117 suspected leprosy SSS secondary data. Of this, being males was the most prevalent in the age group 19-40 years with 91 untreated (84.6% acid fast bacilli, AFB) and 26 treated (80.8% AFB). Treated 2+ BI still high 23.8% from untreated BI 2+ 23.4%. Untreated MI >50 was found in 25.4% and treated MI >50 is still found in 19.1%. Bacillary index and MI support the diagnosis and detect the transmission of leprosy infection.
Volatile Markers of Chicken, Beef, and Pork Satay for Species Authentication Indrasti, Dias; Mukhlisin, Muhammad Faqih; Darmawan, Noviyan; Yuliana, Nancy Dewi
Indonesian Journal of Applied Research (IJAR) Vol. 6 No. 1 (2025): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v6i1.601

Abstract

Satay is a popular dish in Indonesia. It is made from several pieces of meat skewered with bamboo sticks and then grilled over an open flame. Each type of satay meat has a distinct aroma due to its unique volatile component content. Volatilomics is a method that can be utilized to ensure the authenticity of meat products through the detection, characterization, and quantification of all easily vaporizing metabolites in a biological system. No research in Indonesia has previously applied volatilomics to differentiate meat species in satay. This study aimed to identify the volatile compound components in chicken, beef, pork, and mixed pork-containing satay, as well as determined the biomarker compounds for each type of satay meat by volatilomics approach. The volatile components in satay were extracted using the solid-phase microextraction (SPME) and analysed by gas chromatography-mass spectrometry (GC-MS). The data were processed using multivariate data analysis. Each type of satay meat exhibited good separation with the multivariate model. Beef and chicken satay were distinctly separated, whereas samples of pork and mixed pork-containing satay were positioned closely together. The hexadecanal, nonanoic acid, and ethylbenzene showed the strongest correlation in beef satay, whereas in chicken satay, the indicative compounds were benzaldehyde; 2,3,5-trimethyl-6-ethylpyrazine; and 2-nonenal, (E)-. The marker compounds for pork and mixed pork-containing satay were heptanal; 2-methylthiophene; and cyclooctene. The analysis using SPME-GC-MS successfully separated volatile compounds among the satay meats and determined the compounds contributing most strongly to the separation.
Physical Quality of Ecoprint Leather Using Epsom Salt Mordant Pancapalaga, Wehandaka; Widodo, Wahyu; Adiyastiti, Bayu Etti Tri
Indonesian Journal of Applied Research (IJAR) Vol. 6 No. 1 (2025): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v6i1.606

Abstract

The objective of this study was to determine the physical quality of ecoprint tanned leather using Epsom salt mordant compared to non-Epsom salt mordants. This research was conducted experimentally by applying different mordants, including Epsom salt mordant, Sodium acetate mordant mordant, and Acetic Acid mordant, in the ecoprinting process on leather material. The study used 9 pieces of crust-tanned sheep leather. The treatments were as follows: P1 = Epsom salt mordant, P2 = Sodium acetate mordant mordant, P3 = Acetic Acid mordant. The research design followed a Completely Randomized Design (CRD) with three treatments and five replications. The observed variables included color fastness to wet and dry rubbing, as well as the physical quality of ecoprinted leather, which consisted of tensile strength, elongation, stitch strength, and tear strength. Data analysis was conducted using ANOVA and Duncan's Multiple Range Test. Results The study found a highly significant effect (P<0.01) of Epsom salt mordant, sodium acetate mordant, and Acetic Acid mordant on wet rubbing fastness, dry rubbing fastness, and the physical quality of leather, including tensile strength, elongation, stitch strength, and tear strength. Conclusion The use of Epsom mordant in the ecoprint process on leather media provides the best physical quality compared to the use of non-Epsom mordant. The quality of ecoprinted leather treated with Epsom salt mordant met the SNI 4593:2011 standard for sheepskin/goatskin jacket leather.
Identification of Spring Quality Using Tree and Insects Data Collection Semiun, Chatarina; Mamulak, Yulita Iryani; Pani, Emilianus
Indonesian Journal of Applied Research (IJAR) Vol. 6 No. 1 (2025): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v6i1.619

Abstract

Spring water quality is important for human health, so it needs to be preserved. The study aimed to identify spring water quality by approaching the data collection of tree species and insects that live in the spring area. The study was conducted in two springs in T and M villages, Kupang Tengah sub-district, Kupang regency. The study was descriptive, using a random systematic sampling method to obtain data on tree species, insect species, and spring water quality. Data on tree species and insects were analysed descriptively, while water quality data were compared with water quality standards according to Government Regulation No. 22 of 2021. The study found that 14 types of trees and 11 types of insects inhabited the springs. The water quality of the two villages met the physical parameter quality standards but not yet for chemistry and microbiology. Village T had not met the dissolved oxygen (DO) quality standards for categories I and II, while Village M had not met the biological oxygen demand (BOD) quality standards for category I. The water quality from the physical and chemical aspects was still suitable for community activities such as bathing, agriculture, fisheries, and animal husbandry. However, it must first be processed (cooked until boiling) for direct consumption.
Key Factors of Marine-Based Tourism Economy in Labuan Bajo, Indonesia Didit Eko Prasetiyo; Fauzi, Akhmad; Ismail, Ahyar; Wahyudin, Yudi; Chasanah, Uswatun; Halim, Muhammad Abi Sofian Abdul
Indonesian Journal of Applied Research (IJAR) Vol. 6 No. 2 (2025): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v6i2.652

Abstract

Tourism development was a national priority in Indonesia, as outlined in the National Tourism Development Master Plan 2010–2025. Labuan Bajo, designated as one of the “New Bali” destinations, was prioritized for its rich marine biodiversity and high tourism potential. This study examined the key factors that influenced the sustainable development of the region’s marine-based tourism economy. Primary data were collected through Focus Group Discussions (FGDs) using the “World Café” method, involving stakeholders from various sectors. The data were analyzed using the Matrix of Cross Impact Multiplications Applied to a Classification (MICMAC), which mapped the interrelationships among variables. The analysis identified five primary driving factors: participation, infrastructure, regulation, human resource development, and training and education. Governance and conflict were categorized as relay variables, while coordination and information and communication technology were classified as output variables. Welfare, disparity, and income generation were considered autonomous variables. Infrastructure and participation demonstrated a strong indirect influence on income generation. These findings provided strategic insights to guide policymakers and stakeholders in developing integrated and sustainable tourism strategies for Labuan Bajo.
Arima Model for Forecasting Coffee Productivity in West Sumatra, Indonesia Mutiara, Vonny Indah; Putri, Dwi Nuraini; Khairati, Rusda
Indonesian Journal of Applied Research (IJAR) Vol. 6 No. 2 (2025): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v6i2.673

Abstract

As the 10th highest coffee-producing region in Indonesia, West Sumatra played a significant role in the country's coffee sector. Coffee productivity in West Sumatra had been fluctuating; therefore, accurate productivity forecasting was essential for effective coffee farm management, resource allocation, and market stability. This study aimed to identify the best forecasting model for predicting coffee productivity in West Sumatra from 2024 to 2028. The research method used was the descriptive analysis method, applying a time series forecasting approach. The data used in this study were historical records of coffee productivity in West Sumatra for the past 24 years. The data were annual figures from 2000 to 2023. The results showed that ARIMA (1,3,0) was the most suitable, with a Mean Absolute Percentage Error (MAPE) below 50%. This indicated a declining trend in coffee productivity over the forecast period. The projected productivity values (tons per hectare) were 1.000 in 2024, 0.6266 in 2025, 0.6125 in 2026, 0.0538 in 2027, and -0.1709 in 2028. The pattern of minor variations suggested that the ARIMA (1,3,0) model reflected an unstable and downward trend in coffee productivity.
Vegetation Structure and Composition of Potential Nature-based Tourist Destinations in Kalipuro-Gombengsari Village, Banyuwangi Regency Surur, Moh Miftahus; Hakim, Luchman; Rahardi, Brian
Indonesian Journal of Applied Research (IJAR) Vol. 6 No. 2 (2025): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v6i2.677

Abstract

Vegetation was significant in developing nature tourism because it provided aesthetic value and created a cool and comfortable microclimate for visitors. This study aimed to identify the vegetation structure, composition, and diversity in five potential tourist destinations in Kalipuro-Gombengsari Village, Banyuwangi Regency. The method used was purposive sampling with a total of 20 plots, where each location consisted of 4 plots. Data were collected based on three vegetation strata: trees, poles, and shrubs. Quantitative analysis was conducted using the Shannon-Wiener diversity index (H'), the evenness index (E), and Margalef's species richness index (R). The results showed that H' values in all vegetation strata were classified as low to medium. The highest H' value in the tree stratum was 1.57, and in the pole stratum was 2.31, both found in Sumber Manis. The highest value of 2.00 in the shrub stratum was recorded in Bukit Teras Hijau Kacangan. The species with the highest importance index in the tree stratum was Cocos nucifera at 206.06%, in the pole stratum was Musa paradisiaca at 96.00%, and in the shrub stratum was Coffea canephora at 193.28%. Overall, abiotic conditions in the five locations were considered normal, with the highest air temperature recorded at 24°C, soil temperature at 27.2°C, light intensity at 1,375 lux, and soil pH at 7.8.
Stability Improvement and Solid-State of Sauropus androgynus Leaf Extract Solid Dispersion Using a Carrier of Polyvinylpyrrolidone Jingga, Mutiara Dara; Barikah, Kuni Zuaimah; Wicaksono, Yudi
Indonesian Journal of Applied Research (IJAR) Vol. 6 No. 2 (2025): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v6i2.682

Abstract

The Sauropus androgynus leaf contains various phytochemical compounds with various pharmacological activities. However, phytochemical compounds in plant extracts are generally unstable during storage or formulation. This study aimed to prepare S. androgynus leaf extract solid dispersions and evaluate the solid-state properties and stability. Solid dispersions were produced through solvent evaporation using polyvinylpyrrolidone (PVP) as the carrier. Solid dispersions were characterized by powder X-ray diffractometer (PXRD), differential scanning calorimeter (DSC), and scanning electron microscope (SEM). Solid dispersions were stored at a temperature of 60 °C for 30 days, and the stability was determined by measuring the total flavonoid content. The preparation results showed that solid dispersions of S. androgynus leaf extract with PVP K30 and PVP K90 carriers were amorphous solids with a glass transition temperature of 160-170 °C. The phytochemical content of the extract in solid dispersion showed degradation at a temperature of 175.3 - 188.3 °C. At a temperature of 60 °C for 30 days, the decrease of total flavonoid content in solid dispersion was lower than in pure extract. Thus, the formation of solid dispersion of S. androgynus leaf extract with PVP K30 and PVP K90 carriers can increase the stability of phytochemical compounds in S. androgynus leaf extract.
Molecular Docking of the Bioactive Compound Physalis angulata as an Activator of Superoxide Dismutase 1 Wilujeng, Retno; Harlina, Eva; Purwono, Rini Madyastuti; Andrianto, Dimas
Indonesian Journal of Applied Research (IJAR) Vol. 6 No. 2 (2025): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v6i2.737

Abstract

Physalis angulata was known for its pharmacological potential, including antioxidant activity, yet the specific bioactive compounds responsible for enhancing endogenous antioxidant enzymes, such as superoxide dismutase 1 (SOD 1), remained unclear. This study aimed to identify and evaluate the active compounds of P. angulata as natural SOD 1 activators using an In silico molecular docking approach. Forty-nine ligands derived from the active constituents of P. angulata were screened based on Lipinski’s Rule of Five and ADMET properties. Molecular docking was performed using the SOD 1 protein (PDB ID: 5YTO), and docking validation yielded an RMSD value of 0.005 Å. Among the test ligands, withanolide exhibited the most favorable binding energy (−7.011 kcal/mol) and the lowest inhibition constant (7.0 pM), forming strong interactions with key catalytic residues of the enzyme. These findings indicated that withanolide had promising potential as a natural SOD 1 activator, providing a basis for future antioxidant drug discovery.
Consumer Perceptions of Commercial Plant-based Milk Alternative Products in Indonesia Alhusna, Lutfianes Mellinia; Budi, Faleh Setia; Indrasti, Dias
Indonesian Journal of Applied Research (IJAR) Vol. 6 No. 2 (2025): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

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

Abstract

There has been a noticeable shift in consumer preferences from animal-derived milk to plant-based milk alternatives (PBMA). Many scientific studies state that animal milk cannot be replaced by PBMA in term of nutrition. However, not all consumers are aware of this. Therefore, this study aimed to evaluate consumers' perceptions of PBMA. The research was conducted through a regulatory review of PBMA and an online survey using purposive sampling method with 385 PBMA consumers in Jakarta, Bogor, Depok, Tangerang, and Bekasi (Jabodetabek) area. Primary data were collected through a respondent survey employing a Likert scale, and analyzed using the Wilcoxon signed-rank test. National Agency of Drug and Food Control (BPOM) categorizes PBMA as a fruit and vegetable-based drink product and therefore prohibited from using the term 'milk' on its label to prevent consumer confusion with animal-derived milk. There was a misperception of respondents towards PBMA. Out of the seven perceptions tested, five were found to be misperceptions, specifically those related to energy, high fat content, source of protein, source of calcium, and causes of allergy. These misperceptions were likely due to respondents’ limited exposure to information about the nutritional content of PBMA. In addition, PBMA were also a relatively new product, and information about it has not been widely disseminated.

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