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All Journal Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Journal of Community Development International Journal of Technology, Food and Agriculture
Siti Djamila
IPB
Agriculture, Biological Sciences & Forestry Computer Science & IT Engineering Nursing Public Health Social Sciences

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Penerapan Budidaya Hidroponik Sistem Vertikal di SMPN 7 Jember Sebagai Langkah Solutif Program Urban Farming Iswahyono, Iswahyono; Djamila, Siti; Djamali, R. Abdoel; Bahariawan, Amal; Hermanuadi, Didiek
Journal of Community Development Vol. 5 No. 3 (2025): April
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/comdev.v5i3.1473

Abstract

A significant global issue faced by urban areas worldwide is the extensive conversion of agricultural land. In Indonesia, data from the Central Statistics Agency (BPS) in 2021 indicates that the conversion of national rice fields ranges from 60,000 to 80,000 hectares annually. This trend poses a serious threat to the availability of rice and other food sources. Therefore, urban agriculture represents a practical solution for ensuring food availability in a sustainable and independent manner. One applicable technology is the Vertical Hydroponic Farming System. The objectives of this initiative are: (a) to equip teachers with technical skills so they can serve as trainers for their students, and (b) to provide technical support to SMPN 7 Jember, an environmentally friendly school, in its pursuit of achieving Adiwiyata School status at the East Java provincial level by 2024. The methods employed include: (a) delivering theoretical foundations of hydroponic farming systems through traditional lectures, (b) hands-on practice involving the construction of hydroponic installations, seeding and transplanting techniques, maintenance, harvesting, and post-harvest handling, and (c) implementing hydroponic installations and cultivation at SMPN 7 by actively engaging both teachers and students. In conclusion: (a) there was a 110% increase in teachers' knowledge and skills related to hydroponic farming, with evaluation results of the technical guidance averaging 4.9 (very good), and (b) the implementation of hydroponic installations and cultivation at SMPN 7 Jember progressed smoothly, supporting the school in its goal of achieving Adiwiyata School status at the provincial level.
The Performance of a drying machine utilizing an air dehumidification process for marungga leaves and identification of marungga flour Djamila, Siti; Iswahyono, Iswahyono; Wibisono, Yossi; Hermanuadi, Didiek; Supriyono, Supriyono; Bahariawan, Amal; Faizin, Muhammad Alif; Sakdiya, Siti Arifatu
International Journal of Technology, Food and Agriculture Vol. 1 No. 3 (2024): October
Publisher : P3M Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/tefa.v1i3.5606

Abstract

Marungga leaves have the potential to be a source of antioxidants, minerals, and carbohydrates. These leaves can be processed into flour for further processing into various products. Marungga leaves must be dried before they can be processed into flour. They are heat-sensitive, so some of their nutritional content will be degraded if dried at high temperatures. A dehumidification system dryer was designed and built to produce low temperature and humidity to overcome the problem of high-temperature drying. The purpose of this study was to evaluate the performance of the dehumidification dryer and to assess the quality of dried Marungga flour. Drying was carried out under normal working conditions for 8 hours, with air temperature and humidity monitored at 20-minute intervals. The dried Marungga leaves were milled into flour and analyzed for physicochemical properties. The test results yielded the following data: air flow rate 0.109 kg/s, drying temperature 33.5°C, relative humidity 54.7%, drying rate 0.732 kg H2O/hour, specific humidity drop 0.01703 kg H2O/kgda, Carnot COP 6.8, actual COP 4.2, efficiency 61.8 %, SMER 0.055 kg/kWh. The Marungga flour produced had a moisture content 6.4%, protein 36.86%, antioxidants 58.765%, vitamin C 50.338%, and green color (a = -12.75) meets SNI 9228: 2023
An Innovative MOCAF Dryer Design: A TRIZ-Driven Solution Hermanuadi, Didiek; Iswahyono, Iswahyono; Wibisono, Yossi; Triardianto, Dimas; Djamila, Siti; Bahariawan, Amal
International Journal of Technology, Food and Agriculture Vol. 2 No. 2 (2025): June
Publisher : P3M Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/tefa.v2i2.6145

Abstract

The drying stage critically determines the quality of Modified Cassava Flour (MOCAF), directly affecting its functional properties. Insufficient moisture removal leads to detrimental effects including structural degradation and microbial proliferation, while over-drying promotes oxidation. Existing drying methods lack precision and reproducibility, underscoring the need for a MOCAF-specific dryer system. The central challenge is to develop a drying method that is both rapid and efficient while simultaneously preserving product quality. This study aimed to design an optimized drying model for micro-, small-, and medium-sized enterprises (MSMEs), leveraging a TRIZ-driven innovation process to enhance MOCAF quality and process efficiency. Applying TRIZ facilitated the systematic identification and resolution of conflicting design parameters (e.g., rapid drying vs. product integrity). A hybrid technology model was then developed—combining infrared heating, forced-air circulation, and LPG combustion. Performance was evaluated in a pilot unit capable of drying 50 kg of wet MOCAF per six-hour batch, under controlled conditions: 76 °C drying temperature, 2.1 m³/min airflow, and 413 g/h LPG consumption. The optimized dryer achieved a water removal rate of 315 g H₂O/hour. Comparative benchmarking against conventional sun and cabinet dryers showed the hybrid system significantly reduced drying time while maintaining superior structural and functional properties. The TRIZ-based, hybrid MOCAF dryer offers a scalable, cost-effective solution tailored to MSMEs. By closing the innovation loop—linking TRIZ principles directly to enhanced performance metrics—this study delivers practical, field-ready technology. Key contributions include the first documented integration of infrared, forced-air, and LPG heating in MOCAF drying, optimized process parameters, and clear industrial applicability.
Drying Kinetics of Banana Chips: A Modeling Approach Hermanuadi, Didik; Iswahyono, Iswahyono; Kurniawati, Elly; Djamila, Siti; Bahariawan, Amal
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 4 (2024): December 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i4.1090-1100

Abstract

The primary goal of this research is to identify and evaluate the most suitable thin-layer drying model to effectively interpret the drying characteristics of banana chips and determine moisture diffusivity at different drying temperatures. The study utilized physiologically mature “kapok” bananas from the local market in Jember Regency. A flash dryer with a 4000-watt electric heating system was used, equipped with a blower for air circulation, an exhaust fan to expel water vapor. The bananas were processed into chips with a thickness of 1 mm. A total of 2000 g of banana chips were dried at constant temperature according to treatment conditions (air velocity 3.2 m/s, drying at temperatures of 60, 70, and 80°C). The study found that higher drying temperatures (80°C) achieved the highest initial drying rate (35.9% in 30 min) compared to 60°C (28.0%) and 70°C (22.0%). However, the drying rate gradually decreased at all temperatures. The drying kinetics of banana chips at 60, 70, and 80°C aligned well with the modified Midilli model. Effective moisture diffusivity values for banana chips at 60, 70, and 80°C were 4.947E-9 m²/s, 5.165(10–9) m²/s, and 5.756(10–9) m²/s, respectively, indicating that drying at 80°C was the most effective. The effective moisture diffusivity value showed a strong correlation with air velocity, drying temperature, material thickness, RH, and specific material attributes. Keywords: Banana, Diffusivity, Drying, Thin layer drying, Modified Midilli Model.
Co-Authors Bahariawan, Amal Djamali, R. Abdoel Elly Kurniawati Faizin, Muhammad Alif Hermanuadi, Didiek Hermanuadi, Didik Iswahyono, Iswahyono Sakdiya, Siti Arifatu Supriyono Supriyono Triardianto, Dimas Yossi Wibisono