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INDONESIA
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 7 Documents
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Search results for , issue "Vol. 3 No. 1 (2022): Indonesian Journal of Applied Research (IJAR)" : 7 Documents clear
Diurnal Circadian Variation in Photosynthesis in Dracaena Sanderiana Under Contrasting Temperature and Light Jayasooriya L.S.H; Wijethunga W.M.U.D; Kumarihami H.M.P.C; Beneragama C.K
Indonesian Journal of Applied Research (IJAR) Vol. 3 No. 1 (2022): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v3i1.169

Abstract

Dracaena sanderiana is prominent and in-demand cut foliage in the global ornamental industry. This study was conducted to examine the stress responses of Dracaena sanderiana under contrasting temperature and light conditions by using chlorophyll fluorescence (ChlF) transient analysis technique. D. sanderiana cuttings were held in distilled water and subjected to two different light levels, i.e., 22,500±2,000 lux and 750±200 lux allowing two distinct temperature levels. The chlorophyll fluorescence data were collected through OJIP analysis using a portable fluorometer (FluorPen, FP 110). The measurements were recorded four times a day (9 am, 12 pm, 3 pm, and 6 pm) and the data were collected continuously for four days commencing from the first day of treatment application. The major parameters derived from the OJIP analysis, including specific energy fluxes per reaction center (ABS/RC, TR/RC, ET/RC, and DI/RC), flux ratios (maximum quantum yield of primary photochemistry-φPo, electron transport efficiency -ψo, and quantum yield of electron transport –φEo and maximum quantum yield of non-photochemical de-excitation- φDo), and performance index (PI) were recorded. ChlF data showed a clear unimodal diurnal variation in plant performances of D. sanderiana at 22,500±2,000 lux. The circadian variation was reported for all measured ChlF parameters except the ψo, TR/RC, and ET/RC. Based on these circadian variations of ChlF, it can be concluded that D. sanderiana displays a facultative CAM pathway as an adaptation to the stressed conditions.
Problemsof Local Floods and Their Relation to Bogor City Drainage Infrastructure System Andi Setyo Pambudi
Indonesian Journal of Applied Research (IJAR) Vol. 3 No. 1 (2022): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v3i1.178

Abstract

Highland areas are not necessarily without flood problems, especially local flooding. The problem of poor drainage can be the cause of a local flood, as happened in Bogor City, West Java. Development evaluation related to local flooding in a city is an exciting topic to study further. The purpose of this evaluation is to answer the need for public information about the philosophy of flooding in the highlands, existing policies, and factors causing local flooding in Bogor City. The benefits of this analysis can also provide policymakers with input on strategic steps in the planning of urban drainage infrastructure systems, both in terms of physical channels, social approaches, and aspects of land carrying capacity within the ecological framework. The method used in this evaluation is in the form of literature studies and direct field observations of Bogor City's drainage infrastructure at specific points. The recommendation for the Bogor City government is to carry out comprehensive data collection and re-topography, namely by collecting data on buildings and drainage, determining the slope and height of the channel, and implementing risk management at each stage of its implementation. In addition, strict supervision and community participation in overseeing the development process and reducing waste disposal in the river supports the improvement of drainage development.
Proximate Composition and Organoleptic Properties of Pumpkin (Cucurbita Moschata)-Based Complementary Foods with Several Types of Nuts Mardiah; Retno Kartika Rosdiana; Tiana Fitrilia
Indonesian Journal of Applied Research (IJAR) Vol. 3 No. 1 (2022): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v3i1.179

Abstract

Complementary Foods is food given to infants aged 6-24 months. Complementary foods must fulfill the criteria for nutritional needs that have been regulated by the government such as adequacy of macro and micro nutrients. One of the local food ingredients that can be used as complementary foods is pumpkin.Pumpkin is known to contain nutritional components that are quite complete but have a small protein content. Therefore, it is necessary to add nuts as a source of protein. The purpose of this study was to determine the comparison effect of pumpkin puree with various types of nuts on the proximate composition and organoleptic properties of complementary foods. This study used a completely randomized design with one factor, namely the differences in the type of bean puree with five levels of treatments, A1 (35% pumpkin: 35% Bambara bean), A2 (35% pumpkin: 35% kidney bean), A3 (35% pumpkin: 35% mung bean), A4 (35% pumpkin: 35% soybean), and A5 (35% pumpkin: 35% edamame bean). Data analysis using analysis of variance and Kruskall Wallis test. The result showed that the Complementary Foods formulations made with 35% pumpkin puree and 35% soybean puree had the highest nutritional content. The Complementary Foods had 57.25% water content, 2.83% ash content, 20.62% protein content, and 10.49 fat content which had fulfill the Complementary Foods standard except the carbohydrate content. The addition of nuts puree to pumpkin complementary foods had an effect on color and texture sensors and all parameters in the hedonic test.
Heart Rate Detection of Stress Levels for Pregnant Women Yuli Wahyuni; Muhammad Abdulrohman Pany
Indonesian Journal of Applied Research (IJAR) Vol. 3 No. 1 (2022): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v3i1.182

Abstract

During pregnancy, there are changes because the fetus begins to grow and develop in the pregnant woman's stomach. Physiology greatly influences its development, especially in hormonal and metabolic changes that affect the psychological stress level of pregnant women. This study aims to determine the initial action to detect heart rate by looking at stress levels in pregnant women. The results of stress measurements are not normal when the heart rate is less than 60 bpm and more than 100 bpm, while in conditions of more than 60 bpm and less than 100 bpm, the results obtained are normal conditions. This study uses a hardware programming approach with the stages: Project Planning, Research, Component Testing, Mechanical System Design, Functional Test, Functional Test, Overall System Functional Test, System Optimization. The results show that this tool has worked well in monitoring heart rate when stressed in real-time using a pulse sensor displayed via telegram notifications in the form of total data. Still, because it is only in the form of notifications, there is no storage in the form of a database.
Isolation and Anti-Yeast Activity of Secondary Metabolites of Soursop Leaf Endophytic Fungi Akhmad Endang Zainal Hasan; Dimas Andrianto; Husnawati; Faisal Rahman; Nurliani Bermawie; Heddy Julistiono; Eny Ida Riyanti
Indonesian Journal of Applied Research (IJAR) Vol. 3 No. 1 (2022): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v3i1.184

Abstract

This study aimed to isolate the endophytic fungi of soursop leaves that have the potential as anti-yeast. Soursop leaves were collected from 3 locations in West Java, Indonesia. The secondary metabolites produced by the endophytic fungi were extracted with ethyl acetate and tested for anti-yeast activity against Saccharomyces cerevisiae and Candida tropicalis. Profile of extracts contents characterization was carried out by using thin-layer chromatography (TLC). Twelve monoculture soursop leaves endophytic fungi isolates from Sukabumi (3 isolates), Cianjur (3 isolates), and Garut (6 isolates). It showed different abilities to inhibit C. tropicalis and S. cereviseae. The best extract is isolat from Cianjur (Sir-C1) and Sukabumi (Sir-S1). The stain patterns seen between the nine endophytic fungi extracts were similar. This indicates that the compounds in them may also be the same. But the extracts have a different absorbance for anti-yeast activities. This indicates that the total metabolites of each isolate are different. TLC results showed that ethyl acetate extraction produced almost the same metabolite components from nine endophytic fungi extracts, and all extracts had an anti-yeast activity with various absorbance. There are differences in the ability of 12 soursop leaf endophytic fungi to inhibit yeast model C. tropicalis and S. cerevisiae. Some extracts have similar TLC profiles, but their anti-yeast activity is not similar
In Silico, to Determine The Active Compounds of Black Tea and Turmeric In Increasing The Activity of The Enzyme Sod Akhmad Endang Zainal Hasan; Mega Safithri; Aziz Syamsul Huda; Rini Kurniasih
Indonesian Journal of Applied Research (IJAR) Vol. 3 No. 1 (2022): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v3i1.187

Abstract

Damage to cells caused by stress can be reduced by the presence of antioxidants, one of which is Superoxide dismutase (SOD). The role of the active ingredients of black tea and turmeric will be studied using the in-silico method to identify the active compounds as components in SOD activation. The bioavailability and toxicity of the active compounds of black tea and turmeric were studied and followed by molecular docking and virtual games. The parameters studied are Gibbs's free energy (∆G) and binding site similarity (BSS). The results were analyzed using Gibbs's free energy (∆G) and binding site similarity (BSS) parameters. It was found that those that could increase the activity of Cu/Zn SOD enzymes were Epicatechin gallate (black tea) and curcumin (turmeric), with values ​​of -9.5 and -7.4 Kcal/mol and the same BSS value of 81.8%. The control ligand used was beta amyrin. According to Lipinski's rules, Epicatechin gallate and curcumin compounds can be absorbed well and are safe for consumption. This study concludes that Epicatechin gallate, an active compound of black tea, and curcumin, an active compound of turmeric rhizome, have the best potential to increase the activity of Cu/Zn SOD enzymes based on the results of virtual screening and molecular docking. Epicatechin gallate and curcumin are predicted to be well absorbed by the body because they qualify Lipinski's rules and are not toxic and safe for consumption.
Growth and Production of Water Spinach (Ipomea Aquatica Forsk.) in Various Types of Hydroponic Nutrition System Nft (Nutrient Film Technique) Payumi; Oktavianus Lumban Tobing; Nani Yulianti; Nur Rochman
Indonesian Journal of Applied Research (IJAR) Vol. 3 No. 1 (2022): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v3i1.194

Abstract

Efforts to increase the production of kale with a hydroponic cultivation system, the addition of nutrients is absolutely necessary for both macro and micronutrients. In addition to using AB mix nutrients, the use of other alternative fertilizers in hydroponic cultivation needs to be a big concern so that it can suppress the use of inorganic fertilizers. The purpose of this study was to determine the effect of giving various types of nutrient compositions AB mix and cow urine on the growth and yield of water spinach plants with the Nutrient Film Technique (NFT) hydroponic system . The design used in this study was a single factor randomized block design (RAK) with 4 levels of treatment of various types of hydroponic nutrients consisting of N 1 (100% AB mix ), N 2 (75% AB mix + 25% Cow Urine), N 3 (50% AB mix + 50% Cow Urine), and N 4 (25% AB mix + 75% Cow Urine). The results of this study showed that the provision of various nutritional compositions significantly affected the growth and productivity of kale except for the variable number of books. Plant water spinach given nutritional composition N 4 (25% AB mix + 75% of cow urine) showed a markedly lower in all the observed variables, while the growth and productivity of water spinach best shown in the nutritional composition of 100% AB mix but not significantly different the nutritional composition treatment was 75% AB mix + 25% cow urine and 50% AB mix + 50% cow urine. The results of this study also show that the use of cow urine has not been able to replace the use of AB mix nutrition.

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