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Journal of Applied Agricultural Science and Technology
Published by Green Engineering Society
ISSN : 26214709     EISSN : 26212528     DOI : https://www.jaast.org/index.php/jaast/article/view
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Journal of Applied Agricultural Science and Technology (JAAST) is an international journal, focuses on applied agricultural science and applied agricultural technology in particular: agricultural mechanization, food sciences, food technology, agricultural information technology, agricultural economics, agricultural statistics, bioinformatics, farm structure, farm power, agricultural machinery, irrigation and drainage, land and water resources engineering, renewable energy, environment, crop production, and crop protection.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman
Articles 157 Documents
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Land Management and Soil Quality in Sago-Based Agroforestry System: A Study on Mooi Tribe’s Ecological Knowledge (Sorong, Southwest Papua) and Modern Ecological Knowledge (MEK) Wulandari, Diah Kartika; Hairiah, Kurniatun; Prayogo, Cahyo
Journal of Applied Agricultural Science and Technology Vol. 7 No. 4 (2023): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v7i4.212

Abstract

Sago farmers from the Mooi tribe in Sorong Regency - Southwest Papua have consumed and cultivated sago for generations. This research aims to understand the local ecological knowledge (LEK) of sago farmers in managing their land to maintain soil quality in sago agroforestry, compared with modern/scientific environmental understanding. The survey was conducted from February to October 2021 in three sub-districts, Sorong Regency, using an exploratory descriptive method among Mooi sago farmers. Intact soil samples were taken to measure soil physical properties and disturbed soil samples to analyze soil chemical properties (pH, C-Organic, Total N, P, K, CEC, base saturation). The results of this research show that what sago farmers have in common with the unique habits of the Mooi tribe's harvest system is that they harvest enough sago starch to consume or sell if there is too much of it. According to sago farmers, the best land for growing sago is close to a water source and is not affected by soil biota and fertilization. and sago farmers will leave ella sago dregs on the land. Meanwhile, according to MEK, starch formation decreases in flooded land and the remaining sago dregs are very good for making compost and animal feed. In sago forests where sago grows naturally, the soil texture is dominated by silt, having a pH of 5.8-7.2; High total organic C 2.8-5.2%, P 14.08-66.44 mg/kg, K 755.3 – 1626.8 mg/kg, CEC 18-40 cmol(+)/kg, and base saturation 30 – 134%. These values are relatively higher than on land with a sago-based agroforestry system.
Identification of Availability and Lignocellulosic Properties in Coconut Dregs Waste Murtius, Wenny Surya; Argo, Bambang Dwi; Nurika, Irnia; Sukardi, Sukardi
Journal of Applied Agricultural Science and Technology Vol. 8 No. 1 (2024): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v8i1.248

Abstract

Agricultural waste, including coconut pulp, contains lignocellulose and is a very important, renewable and sustainable industrial raw material. Many of the food, textile, pharmaceutical, paint and resin, agrochemical, oil processing, and other sectors utilize lignocellulosic derivatives. The objectives of this study were to determine the availability of coconut pulp in Padang City-West Sumatra, analyse the lignocellulosic components contained and cell surface morphology, and observe the chemical elements in coconut pulp waste. An exploratory approach was used in this study to achieve these objectives. The results showed that there were 98 coconut milk entrepreneurs spread across traditional markets in Padang City, West Sumatra. Every day the coconut milk squeeze business examined produces ± 1.18 tonnes of coconut pulp. Coconut waste also contains 47.18% cellulose, 10.58% lignin, and 12.10% hemicellulose. Based on the XRD results, the crystal size of coconut pulp obtained from XRD observation is 11.8 nm.
The Effect of Immersion Concentration of Coconut Water and Dosage of NPK Fertilization on Growth and Yield of Peanut (Arachis hypogeae L.) Okti, Reski Dwi; Setiyono, Setiyono; Sholikhah, Ummi; Purnamasari, Ika; Meliala, Susan Barbara Patricia Sembiring; Savitri, Dyah Ayu; Arum, Ayu Puspita
Journal of Applied Agricultural Science and Technology Vol. 8 No. 2 (2024): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v8i2.169

Abstract

One problem of peanut cultivation is the inability of peanut seeds to be stored long-term. Prolonged storage of seed peanuts causes seed deterioration due to seeds losing reserves of food and nutrient that cause the seeds difficult to germinate. As well as other problems, namely Nitrogen, Phosphorus and Potassium fertilization which has not been based on plant needs, fertilizer application tends to be excessive. The purpose of this study is to know the interaction and the main effect of the concentration treatment of coconut water immersion and NPK fertilization doses. This study used a factorial randomized block design with three replications. The first factor was the immersion concentration of coconut water (A) which consisted of 3 levels, namely: 0% coconut water (A1), 15% coconut water (A2), and 30% coconut water (A3) and the second factor was the dose of NPK fertilization (B) consisting of 4 levels, namely: NPK 0 g/plot (B1), NPK 22.5 g/plot (150 kg/ha) (B2), 45 g/plot (300 kg/ha) (B3), and NPK 67.5 g/plot (450 kg/ha) (B4). The results showed that (1) there was a significant interaction only on the number of primary branches with the applied treatment, 15% coconut water immersion concentration and NPK fertilization dose of 22.5 grams/plot (A2B2) (7.7 branches). (2) Concentration immersion in coconut water significantly affected the percentage of pithy pods, the percentage of empty pods, and the weight of 100 seeds, with the best treatment being the concentration of 15% coconut water immersion (A2). (3) Dose of NPK fertilization factor had a significant effect on harvesting age, percentage of empty pods, wet pod weight and productivity with the best treatment of 67.5 gram/plot NPK fertilization (B4).
Effect of Stevia and Erythritol on Sensory, Microbiological, and Physicochemical Characteristics of Black Glutinous Rice Cookies Sulistyawati, Eko Yuliastuti Endah; Rismaya, Rina; Fauziyyah, Athiefah; Ulfah, Mutiara
Journal of Applied Agricultural Science and Technology Vol. 8 No. 3 (2024): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v8i3.204

Abstract

Cookie is a popular and well-liked food but is high in calories and low in fiber. Replacing sugar by artificial sweeteners in cookies is expected to reduce the calorific value of cookies. This study aimed to evaluate the effect of adding artificial sweeteners on the physical, sensory, microbiological characteristics, and functional benefits of cookies. A completely randomized design with sweeteners (stevia and erythritol) and concentrations (0.2%, 0.4%, and 0.5%) was used. The results showed that stevia and erythritol had significantly affected all test parameters, except in the mold/yeast parameters of cookies. The adding of stevia and erythritol significantly decreased L*, a*, b*, hedonic scores, caloric values, dietary fiber contents, total microbial values but significantly increased hardness and antioxidant capacities (IC50) of final cookies. All sensory ratings of the sucrose and formulated cookies were >3 points, which demonstrated that stevia and erythritol can be sugar replacers that can reduce calorie cookies. The findings can guide in the reformulation of low-calorie, high-fiber, and non-gluten cookies.
The Effect of Temperature on Thermochromic Leuco Dyes: A Meta-Analysis Warsiki, Endang; Jayanegara, Anuraga; Juniati, Indira; Thamrin, Elfa Susanti; Nisrina, Aufa; Rardniyom, Chananpat
Journal of Applied Agricultural Science and Technology Vol. 8 No. 2 (2024): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v8i2.224

Abstract

The effect of temperature treatment, either increasing or decreasing the temperature of leuco dyes, can produce thermochromic by looking at the changing color of samples resulting from experiments. The colors that are seen namely brightness (L), a* value, b* value, chroma, degree of hue (oHue), color difference ( E), and color density (CD). This research was conducted to analyze the temperature treatment of the thermochromic leuco dye against color characteristics resulting from meta-analysis using secondary data from pre-existing research. The total number of journals used was 21 studies and the data obtained were 82 sets of treatments. The data were then analyzed using IBM SPSS software, which used quadratic and linear regression models. The results of the study with a temperature range between -8°C to 95°C show that the effect of temperature treatment with an increase in temperature can cause a significant elevation impact on brightness values (p <0.002, R2 0.174), b* (P <0.01, R2 0.146), color difference ( E) (P <0.0012, R2 0.117), and ohue (P <0.053, R2 0.087). A significant reduction effect can be seen in the chroma value (P <0.007 R2 0.134) and the color density (P <0.007, R2 0.128). The impact of temperature treatment was not significant (p> 0.1) for a* value.
Study on The Addition of Honey as a Natural Antimicrobial Agents in Avocado Juice (Persea americana Mill) Suhartatik, Nanik; Mustofa, Akhmad; Wijaya, Danastri; ES, Eko Yuliastuti; Astuti, Beti Cahyaning
Journal of Applied Agricultural Science and Technology Vol. 8 No. 2 (2024): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v8i2.241

Abstract

Unpasteurized avocado juice is a popular food product, considered natural, fresh, and healthy. Microbial contamination in unpasteurized juice is high and can pose health risks to humans. Such processing technology is applied to reduce the level of contamination, such as pasteurization, adding preservatives, cooling/freezing temperature, or adding antimicrobial compounds. Honey has a high sugar content, low pH, contains hydrogen peroxide, and organic acid that can inhibit the growth of pathogenic bacteria. This research aims to determine the antibacterial activity of honey in avocado juice using different types of honey types including honey produced by Apis dorsata (AD), Apis mellifera from wildflowers (AMW), Trigona sp (TG) and A. mellifera from kapok (Ceiba pentandra) (AMC) flowers). The second factor was honey concentration (5, 10, and 15%). The results showed that after 2h of incubation, AD honey inhibited the total coliform bacteria by 98.84% at a concentration of 10%, AMW honey effectively inhibited total Staphylococci by 99.04% at a concentration of 15%, and TG honey successfully inhibited total Salmonella-Shigella bacteria at a concentration of 15%. Therefore, using honey in avocado juice can inhibit the growth of pathogenic bacteria, although it has not reached the minimal limits of fruit juice quality standards. Further research is needed to determine the minimum inhibitory concentration of honey required to inhibit pathogenic bacteria in avocado juice.
Digital Twin in Modelling Citronella Grass Essential Oil Distillation Process with Computational Fluid Dynamics Approach Riwanti, Arifia Noor; Hermana, Budi
Journal of Applied Agricultural Science and Technology Vol. 8 No. 3 (2024): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v8i3.244

Abstract

This study aims to investigate distillation process of Citronella Grass (Cymbopogon nardus) essential oil and determine the effect of heating temperature on oil quality, which significantly influences the market value. The study procedures were carried out by developing a virtual model of distillation apparatus using Digital Twin (DT) approach, integrating Computational Fluid Dynamics (CFD) to stimulate fluid behavior as it transitioned from vapor to liquid during distillation. The core of DT is in the virtual model development and three-dimensional (3D) geometric representations of system. The methodology comprised creating 3D geometric model of distillation setup, followed by mesh generation as well as setting of boundary conditions and computational parameters. In addition, numerical iterations were used to refine the process, leading to the analysis of CFD visualizations. The convergent result showed that the developed model was accurate at 300 iterations. Observations confirmed the occurrence of vapor to liquid phase change in the spiral pipe, with vapor density below 1 kg/m3 and liquid density between 800-1000 kg/ m3. Temperature monitoring showed a reduction from 120◦C in distillation tank to 24-26◦C post-condenser, which was similar to the observed range of 25-30◦C. Further temperature exchange in the reservoir was stimulated and observed in 36-38◦C. The result also showed that DT model created using CFD was capable of reflecting the real conditions observed.
Land Suitability of Wani Fruit (Mangifera caesia) for Fruit Development in Mount Batur, Kintamani, Bali Yuniti, I Gusti Ayu Diah; Sasmita, Nanang; Purba, Jhon Hardy; Komara, Liris Lis
Journal of Applied Agricultural Science and Technology Vol. 8 No. 2 (2024): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v8i2.245

Abstract

Bali Province is one of the local mango producers, namely Wani fruit. Wani fruit (Mangifera caesia) is a local Balinese fruit that has the potential to be developed. Wani fruit production in Bali has decreased due to fewer trees in community gardens. This study aims to determine the suitability of land for wani fruit plants on the slopes of Mount Batur Kintamani. Evaluation of land based on agroecological zones includes slope, drainage, humidity and temperature. Sampling used composite sampling based on agroecological zones and data analysis using descriptive and comparative methods. The results of research on the suitability of Wani fruit land in Kintamani show three classes, namely moderately suitable (CS), marginally suitable (SM), and not suitable (TS) with the main limiting factors being slope, texture, temperature, effective depth and rainfall. Based on the results of research on the Kintamani area, Mount Batur is suitable for the development of Wani Fruit in Bali. Primarily for Horticultural and Conservation purposes for the protection of local species. Based on agroecological zones, the land area in the Kintamani Bali area that can be developed for Wani fruit plants are zones I, II and III with an area of 21,476 Ha, which is 58.53% of the area of Kintamani. The distribution of agroecological zones suitable for the development of Wani fruit in zone I and II land units is predominantly spread in residential plain areas, and land units in zone III are spread in hilly areas.
Sucrose Osmotic Treatment Effect on Moisture, Antioxidant, Texture, and Sensory Properties of Ginger Extract-Imersed Coconut Chips Kawiji, Kawiji; Siahaan, Adrian Hotma James; Manuhara, Godras Jati; Atmaka, Windi
Journal of Applied Agricultural Science and Technology Vol. 8 No. 2 (2024): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v8i2.246

Abstract

In this study, ginger extract was used to impart a distinctive, popular flavor and functional properties (antioxidants) to coconut chips. Sucrose was added to the extract as an osmotic agent to facilitate the migration of antioxidant and flavor compounds from the ginger extract into the fresh coconut flesh during immersion. This study aimed to determine the effects of immersion in ginger extract with the addition of various concentrations of sucrose on the antioxidant, moisture, texture, and sensory characteristics of green coconut chips. The antioxidant activity was analyzed by 2,2-diphenyl-1-picrylhydrazyl scavenging assay. Instrumental texture analysis included Fmax, hardness, and deformation parameters. The results showed that higher concentrations of sucrose added to the ginger extract resulted in increasing antioxidant activity, Fmax, hardness, and panelist preference for color, taste, and overall, and decreasing moisture and deformation. Based on the antioxidant activity parameter, adding sucrose to ginger extract enhanced the effectiveness of immersion, thereby reducing the immersion duration to achieve greater antioxidant activity.
Phytochemical Screening of Mahogany (Swietenia mahogany) Secondary Extract Potential as COVID-19 Medication Candra, Ifan Aulia; Hasibuan, Syahbudin; Khoir, Fastabiqul
Journal of Applied Agricultural Science and Technology Vol. 8 No. 3 (2024): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v8i3.247

Abstract

Mahogany secondary metabolite is proven effective as lung disease medication, including COVID-19 through docking analysis. Therefore, this study aimed to identify total secondary metabolite from leaves, stem barks, and seeds of mahogany (Swietenia mahogany). The study was carried out using an experimental and descriptive method by observing the visual changes in the sample including color and foam formation, total levels of flavonoids, alkaloids, and saponins using Gas Chromatography and Mass Spectroscopy (GC-MS). Phytochemical analysis was analyzed to identify secondary metabolites namely flavonoids, alkaloids, tannins, triterpenoid saponins, and steroids. The results of the GC-MS analysis showed that mahogany seeds extract had the highest retention time, with a total of 46,484, containing alpha -D Glucopyranoside, 3-Penten-2-one, and gamma-Tocopherol. These compounds belonged to derivatives of flavonoids and saponins, serving as potential COVID-19 medication. The other were terpenoid, steroid, and fatty acid group compounds (alpha humulene, neophyte diene, n-hexadecanoic acid, 9- Octadecenoic acid, Octadecanoic acid, Squalene, and Stigmasterol). In conclusion, these identified compounds have the potential for COVID-19 medication due to their anti-inflammatory, antiviral, antimicrobial immunosuppressant, anticancer, and anti-asthma properties.

Page 9 of 16 | Total Record : 157

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