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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 7 Documents
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Search results for , issue "Vol. 1 No. 3 (2020): Indonesian Journal of Applied Research (IJAR)" : 7 Documents clear
Effects Drying on The Indonesian Citrus Peel Antioxidant Activity Nindya Atika Indrastuti; Siti Aminah; Syifa Fauziah; Dwi Handayani
Indonesian Journal of Applied Research (IJAR) Vol. 1 No. 3 (2020): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v1i3.63

Abstract

The high production and market demand of citrus fruits for household and industrial consumption make it peels one of the most abundant wastes found in the environment. On the other hand, citrus peel is well known for bioactive compounds that beneficial to human health, including phenolic, flavonoids, and antioxidants. Recently, citrus peel waste is starting to be used for food ingredients. The drying technique is one of the solutions that can be used for preserving citrus peel waste which has high water content. This study was objected to identifying the effect of the drying type (tray dryer and freeze dryer) on the antioxidant activity alteration of three citrus varieties that commonly cultivated in Indonesia, i.e. pummelo/jeruk Bali (C. maxima Herr.), mandarine citrus/jeruk keprok (Citrus reticulate) and sweet orange/tangerine/jeruk Medan (C. microcarpa L. and C. sinensis L.). The antioxidant activity was measured by calculating the IC50 value. The results showed ethanol extract of fresh mandarin citrus peels showed the lowest IC50 (14.46 ± 3.63 mg/mL) compared to fresh pummelo peels (26.48 ± 5.17 mg/mL) and fresh tangerine peels (16.94 ± 1.51 mg/mL). Tray dryer technique reduced the IC50 value of the peel extracts of pummelo, mandarine citrus and tangerine were 78.92%, 72.34%, and 79.69%, respectively. Whereas Freeze dryer drying reduced the IC50 value of pummelo, mandarine citrus and tangerine peel extracts were 59.21%, 69.43%, and 80.46%, respectively.
The Potential of Butterfly Pea Flower Methanol Extract as an Antioxidant by in Silico Tiana Fitrilia; M. Fakih Kurniawan; Febryana Rahayu Kurniawati; Tirta Setiawan
Indonesian Journal of Applied Research (IJAR) Vol. 1 No. 3 (2020): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v1i3.64

Abstract

Abstract: Butterfly pea flower (Clitoria ternatea L.) is a flowering plant from the Fabecea family that can grow vines. Butterfly pea flower are known to have chemical components that can act as antioxidants. This study aims to predict the potential of active compounds from methanol extract of butterfly pea flower in inhibiting reactive oxygen species (ROS) based on bond affinity (∆G), the value of Root Mean Square Deviation (RMSD) and their interactions. The method used was a computational method with in silico technique. The software used was Autodock Vina with visualization using the Biovia Discovery Studio Visualizer 2020. The enzyme receptor was NADPH Oxidase (NOX) obtained from Protein Data Bank and the test ligands were a chemical compound from methanol extract of butterfly pea flower. The results of the in silico study showed that the NO had a innate ligand, namely the GTP ligand which has a ∆G value of -7.3 kcal/mol, an RMSD value of 3.1111 Å and the interaction with the receptor that involves the presence of hydrogen bonds. Based on the results of the analysis of 11 test ligands, the chemical component of caffeine was predicted to have the most potential in inhibiting ROS compounds with a value of ∆G -5.4, RMSD value of 1.328 Å and had the same amino acid residue in hydrogen bonding, namely ASP118, and GLY15. The test ligand had the ability to inhibit ROS compounds with a lower level of stability than the innate ligand. Keywords: antioxidant; butterfly pea flower; in silico; NADPH oxidase, ROS
Product Attributes Determine The Preference of Herbal Medicine Consumers Himmatul Miftah; Ita Novita; H Tsuwaibah; M. A. Sunaryo
Indonesian Journal of Applied Research (IJAR) Vol. 1 No. 3 (2020): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v1i3.65

Abstract

Abstract: The emergence of a wide variety of herbal medicinal products requires marketers to better understand consumer behavior. The various brands offered make consumers tend to have certain preferences before making a purchase decision. This study aims to determine the attributes of herbal medicinal products that determine the level of consumer preference in the purchasing process and the closeness of the attributes to consumer preferences. The method used is interviews with consumers which are then processed with conjoint analysis to determine the attributes that are most important to consumers in making a purchase. The research concludes that the most important attributes in purchasing herbal medicine in order from the most important are the properties, price, expiration time and packaging. There is a close relationship between the combination of attributes studied and consumer preferences for herbal medicine. This study is limited to four attributes and does not use ranking ratings on the stimulus or combination of attributes, consumer behavior. The uniqueness of this study is to analyze the attributes simultaneously. Keywords: Herbal medicine product attributes, consumer preferences, conjoin analysis, level of importance
The Reconditioning Growth and Production of Chili Through The Banana Hump and Mimba Leaf Extract Oktavianus Lumban Tobing; Yanyan Mulyaningsih
Indonesian Journal of Applied Research (IJAR) Vol. 1 No. 3 (2020): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v1i3.71

Abstract

The growth regulators of gibberellin and cytokinins are found in banana hump extract, while natural pesticides are found in the neem leaf extract. These two active ingredients can condition the growth and yield of chilies. There have not been any publications on the use of banana hump extracts and neem leaves to increase the growth and production of chili plants. The writing of this research article aims to explore the diversity of Indonesia's biological resources, among others, sword stalk banana hump extract and neem leaves which can stimulate the growth and yield of red chilies. Data analysis used a randomized block design with two variables and 3 repetitions. The first treatment used banana hump extract which consisted of four percentage levels, namely zero, fifteen, thirty, and forty-five percent, and the second treatment used neem leaf extract which consisted of four percentage levels, namely zero, fifteen, thirty, and forty-five, percent. A total of 600 grams of banana hump granules and neem leaves plus 1 liter of methanol, concentrated to a volume of 250 ml were used in this study. The results of the research showed that giving banana hump extract and neem leaves was able to stimulate the growth of leaf area so that it had an impact on increasing photosynthesis and plant metabolism. Fruit weight cannot be stimulated because, during the study, there was a long dry season, so there was a water deficit which was a limiting factor in the production of fruit formation.
Performance and Carcass Composition of Male Ma Ducks Given Bay Leaf Solution in Drinking Water Anggraeni Anggraeni; Ristika Handarini; Agung Puji Haryanto
Indonesian Journal of Applied Research (IJAR) Vol. 1 No. 3 (2020): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v1i3.75

Abstract

Bay leaves contain flavonoid active compounds including quercetine and fluoretine having antioxidative and antimicrobial properties. Bay leaves can be given as feed additive to improve body metabolism in animals. This study was aimed at assessing the effects of the inclusion of bay leaf solution in drinking water on the performance and carcass quality of male MA ducks. Seventy-two male one-day-old MA ducks were allocated into battery cages (50 cm length, 50 cm width, 78 cm height). The ducks were fed commercial rations containing 21-23% CP and 2820-2920 Kcal/kg ME and given drinking water containing bay leaf solution (LDS). A completely randomized design with 3 treatments and 6 replicates of 4 ducks each was used. Treatments consisted of drinking water containing no LDS (R0), drinking water containing 4% LDS (R1), and drinking water containing 8% LDS (R2). Measurements were taken on production performance and percentages of carcass parts. Results showed that th einclusion of LDS in drinking water gave significant effects (P<0.05) on body weight gain but not (P>0.05) on all carcass composition parameters. It was concluded that the inclusion of LDS in drinking water up to 8% resulted in a mean body weight gain of 194.88±10.88 g/head/day but did not affect the percentages of carcass and its parts including breast, wing, and thigh. It was recommended that LDS be included by up to 8% in drinking water of male MA ducks for optimal body weight gain.
Exploring Consumers' Acceptance of E-Marketplace Using Tam and Flow Theory Agung Purwanto; Nurahman; Andy Ismail
Indonesian Journal of Applied Research (IJAR) Vol. 1 No. 3 (2020): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v1i3.76

Abstract

Abstract: One business models of E-commerce which well-developed is E-Marketplace. The internal competition of E-Marketplace remains tough yet some achieve its successful compared to the others. The parameter of successful E-Marketplace can be seen by the numbers of acceptance by the costumers. Hence, this research on E-marketplace acceptance is significant to be done. This research takes a case study in one of the Indonesian markets, named the ‘Pusat Perbelanjaan Mentaya’ (PPM) regarding the use of the E-marketplace. This research aims to find out the adoption of e-marketplace acceptance. Our research model based on Technology Acceptance Model (TAM) which is modified by adding shopping enjoyment variable (Flow Theory). This research applies quantitative research method; spreading questionaries and surveys. The data obtained were 240 from the PPM consumers who use E-marketplace application. Then the data would be used to examine the relationship between the variables of the proposed model. The results of this study show that the perception of the use of E-Marketplace application effects the perceived benefits. This due to the ease of operating the E-marketplace service affects users, moreover, sales and purchase transactions become more effective and efficient. In essence, the ease perceived also has an influence of the users’ attitude. This shows that E-marketplace service users feel that using these services increases effectiveness and benefits; they will not refuse to use E-marketplace services. The results in this study that the variable attitude towards use of Behavioral Intention is not accepted. Technology Acceptance Model, Technology Acceptance Theory, Shopping enjoyment, E-marketplace
Formulation of Liquid Hand Soap Made From Neem Seed Oil and Lemongrass Essential Oil Fina Uzwatania; Riska Surya Ningrum; Sri Resti O
Indonesian Journal of Applied Research (IJAR) Vol. 1 No. 3 (2020): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v1i3.79

Abstract

The COVID-19 outbreak has overly emphasised the importance of handwashing with soap to reduce the spread of the virus. This study was conducted to formulate a liquid hand soap with neem oil and lemongrass essential oil as an natural antibacterial component. Three different concentrations of neem oil 5%; 10% and 15% and three different concentration of lemongrass essential oil (0.2%; 0.4%;0.6%) were formulated as liquid soap using coconut oil, castor oil and neem oil as its soap bases. The natural liquid soap was made by saponification reaction between oils and potassium hydroxide. The soap was evaluated for its pH value, density, foam stability, insoluble in alcohol content, free fatty acid and antibacterial activity. The results showed that the colour of the liquid soap was transparent with yellowish colored and had distinctive smell of neem oil. The pH values of the different formulated liquid hand soaps are within the accepted pH range of 4 - 10. The specific gravity was 1,083 – 1,088 g/ml. The foam stability range was 25.35% - 78.38%, respectively. The insoluble in alcohol content range were 0.14 – 0.4. The free caustic alkali range was 0.12 – 0.47. The liquid hand soap can inhibit the growth of Staphylococcus aureus. The inhibition zone diameter of liquid hand soap was 1.98- 2.61 cm. It was therefore proven that neem oil and lemongrass essensial oil is effective as an antibacterial component in the formulation of liquid hand soap.

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