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Jurnal Keteknikan Pertanian
Published by Institut Pertanian Bogor
ISSN : 24070475     EISSN : 23388439     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Keteknikan Pertanian dengan No. ISSN 2338-8439, pada awalnya bernama Buletin Keteknikan Pertanian, merupakan publikasi resmi Perhimpunan Teknik Pertanian Indonesia (PERTETA) bekerjasama dengan Departemen Teknik Mesin dan Biosistem (TMB) IPB yang terbit pertama kali pada tahun 1984, berkiprah dalam pengembangan ilmu keteknikan untuk pertanian tropika dan lingkungan hayati. Jurnal ini diterbitkan dua kali setahun. Penulis makalah tidak dibatasi pada anggota PERTETA tetapi terbuka bagi masyarakat umum. Lingkup makalah, antara lain: teknik sumberdaya lahan dan air, alat dan mesin budidaya, lingkungan dan bangunan, energi alternatif dan elektrifikasi, ergonomika dan elektronika, teknik pengolahan pangan dan hasil pertanian, manajemen dan sistem informasi. Makalah dikelompokkan dalam invited paper yang menyajikan isu aktual nasional dan internasional, review perkembangan penelitian, atau penerpan ilmu dan teknologi, technical paper hasil penelitian, penerapan, atau diseminasi, serta research methodology berkaitan pengembangan modul, metode, prosedur, program aplikasi, dan lain sebagainya.
Arjuna Subject : -
Articles 623 Documents
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Models of Moisture Sorption Isotherm and The Estimation of Red Ginger Powder Shelf Life in Various Packaging Materials Riska Juliana; Rokhani Hasbullah; Sutrisno Suro Mardjan
Jurnal Keteknikan Pertanian Vol. 8 No. 1 (2020): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.08.1.23-28

Abstract

Abstract In the processing, the red ginger powder was dried at 50°C. Red ginger powder is hygroscopic, so it is easy to absorb moisture. This research aims to determine (i) the isothermic absorption curve model in red ginger powder with different fineness modulus and (ii) the expiration date using the critical moisture content method in various types of packaging materials. Moisture sorption isotherm of red ginger powder was determined by the static gravimetric method at 300C. The relationship equilibrium moisture content between relative humidity (RH) is described by the Hasley, Chen-Clayton, Henderson, Caurie, and Oswin Models. The Estimated shelf life is determined using the ASLT (accelerated shelf-life testing) method and calculated using the Labuza model with a critical water content approach. The results obtained that moisture sorption isotherm red ginger powder has sigmoid shape a type II. Henderson is the model that illustrates the accuracy of the ISA curve of red ginger powder of 60 mesh particle size while the Chen-Clayton Model illustrates the accuracy of the ISA curve of red ginger powder of particle size of 80 mesh. The shelf life of red ginger powder is 60 mesh particle size and using HDPE, PP, and aluminum foil packaging which is stored at 75% RH and 300C temperature is 118.85 days, 467.63, and 609.26 days, respectively. The shelf life of red ginger powder 80 particle size is 148.17 days, 582.98 days and 759.54 days.
Laju Deoksigenasi dan Reoksigenasi Sungai Bedadung(Studi Kasus di Desa Tamansari dan Desa Lojejer, Jember) Agus Dharmawan; Sri Wahyuningsih; Elida Novita
Jurnal Keteknikan Pertanian Vol. 9 No. 1 (2021): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.09.1.1-8

Abstract

Bedadung river is one of the biggest rivers that passes through Jember Region, East Java, Indonesia. Due to land uses caused by surrounding civilization, many of drainage channels throw in nonpoint source pollutants from industrial, domestic, and agricultural activities to river. DO and BOD are two of most important parameters reflecting ecological health of river. BOD reflects the number of organik pollutant contained water. DO concentration is controlled by a number of physical, chemical and biological processes, such as deoxygenation and reoxygenation. The aim of this research to analyze deoxygenation and reoxygenation rates of Bedadung River segment Tamansari and Lojejer villages, Jember. The primary data were obtained by measuring of stream flow and water quality parameters (temperature, DO and BOD) at 4 observed stations (BDG01, BDG02, BDG03, and BDG04). The result showed that stream flow was 6.466 m3/det, and its water quality such as DO 7.008 mg/L dan BOD 0.928 mg/L. The values of deoxygenation and reoxygenation rate were 0.975 mg/L.day and 1.051 mg/L.day, sequentially. The reoxygenation rate value was higher than deoxygenation value, concluded that Bedadung stream was able to increase its dissolve oxygen content and attempt self purification.
Analisis Rasio Energi pada Produksi Biodiesel dengan Reaktor Berpengaduk Statik Sistem Kontinu (Energy Ratio Analysis on Biodiesel Production Using Continuous Static Mixing Reactor) Inge Scorpi Tulliza; Armansyah Halomoan Tambunan; Edy Hartulistiyoso; Dadan Kusdiana
Jurnal Keteknikan Pertanian Vol. 8 No. 2 (2020): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.08.2.39-44

Abstract

Energy ratio analysis of various methods and technology of biodiesel production is needed to get an idea of the effectiveness of the method or technology used. This study aims to analyze the energy ratio in the biodiesel production process with a continuous static mixing reactor. RE2 values for biodiesel production using a continuous static mixing reactor with catalysts 0.3% (w/w) and 0.5% (w/w), respectively are 0.94 and 1.03. The addition of the number of modules to achieve the conversion rate required in accordance with SNI-7182 (2018) can increase the energy ratio to 1.10 in the use of catalysts 0.3% (w/w), and 1.09 with the use of a 0.5% catalyst (w/w). The energy ratio value with the addition of the module is about 10% higher than the ratio value for the bacth method using a 1% catalyst and the SMV method without catalyst.
Pengaruh Amplitudo Ultrasonik dan Waktu Ekstraksi Terhadap Rendemen dan Mutu Oleoresin Pala I Wayan Budiastra; Sutrisno Suro Mardjan; Ahmuhardi Abdul Azis
Jurnal Keteknikan Pertanian Vol. 8 No. 2 (2020): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.08.2.45-52

Abstract

Nutmeg oleoresin is one of the nutmeg derivative products with high values produced from the extraction process. The conventional extraction process using maceration takes a long time so that it is less suitable for industries needs. This study aims to examine the UAE direct sonication method for increasing yield and quality of nutmeg eleoresin. Nutmeg with optimal maturity level were harvested, dried and milled into 60 mesh particle size. Nutmeg powder of 200 g was placed in beaker glass filled with etanol 800 ml (material and solvent ratio 1:4) and UAE was carried out using a sonicator with a frequency of 20 kHz and power of 700 W. Four ultrasound amplitude levels (45, 60, 75, 90%) and four levels of extraction time (30, 45, 60, 75 minutes) were taken as UAE treatments. Extraction using maceration at room temperature for 7 hours was done as control.  The results showed that the greater the amplitude of the ultrasound, the higher the yield of nutmeg oleoresin. The longer the extraction time, the higher the yield of nutmeg oleoresin. Ultrasonic assisted extraction can increase nutmeg oleoresin yield by 11 to 52% and faster time (<= 1,25 hour) than maceration extraction method (7 hours).
Kinetika Pengeringan Lapisan Tipis Daun Jati Belanda (Thin Layer Drying Kinetics of Guazuma Ulmifolia Leaves) Hendri Syah; Armansyah Halomoan Tambunan; Edy Hartulistiyoso; Lamhot Parulian Manalu
Jurnal Keteknikan Pertanian Vol. 8 No. 2 (2020): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.08.2.53-62

Abstract

The objectives of this study were to determine a suitable thin layer drying model to describe the drying kinetics of Guazuma ulmifolia leaves and determine the mass transfer parameters of Guazuma ulmifolia leaves. The drying of Guazuma ulmifolia leaves was conducted in a laboratory scale dryer with various temperature (40oC, 50oC, and 60oC) and relative humidity (30%, 40%, 50% and 60%). Five drying models, namely, Newton, Henderson and Pabis, Page, Midilli-Kucuk, and Verma et al. were fitted to the drying data. The drying curve of guazuma leaves did not show a constant drying period during the drying period. The models suitability were compared base on coefficient of determination (R2), root square mean errors (RSME), and reduced mean square of deviation (X2). It was found that, among the models evaluated, the Midilli and Kucuk model is the best to describe the drying kinetics of Guazuma ulmifolia leaves. The effective moisture diffusivity was found to be in the range of 10-13 – 10-12 m2/s and the convective mass transfer coefficient was in the range of 10-9 – 10-10 m/s. The activation energy value was found to be 89.21 kJ/mol.
Reduksi Bahan Organik Kulit Kopi dan Eceng Gondok Terhidrolisis Menggunakan Proses Anaerbik Elida Novita; Sri Wahyuningsih; Subdatul Widad; Hendra Andiananta Pradana
Jurnal Keteknikan Pertanian Vol. 9 No. 1 (2021): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.09.1.23-30

Abstract

Coffee pulp and water hyacinth are a biomass source that can be used to feeding material for biogas production as energy an anaerobic digester. But coffee pulp and water hyacinth contain lignin. The Alkaline or base hydrolysis is a method of the solving chemical structure of lignin compounds using a strong acid and base. The focus of research investigated the base hydrolysis with NaOH in coffee pulp and water hyacinth an anaerobic process for organic material reduction. The research design in laboratory conduct of organic materials reduction on coffee pulp and water hyacinth used Completely Random Design (CRD). Anaerobic treatments were without hydrolysis (H1), only the coffee pulp with hydrolysis (H2), only water hyacinth with hydrolysis (H3) and all with hydrolysis (H4). The highest NaOH concentration for lignin reduction on the base hydrolysis was 60 ppm. The analysis of variants with significantly (p<0.05) showed all treated differently. Anerobic treatment of the coffee pulp and water hyacinth (H4) had the highest value organic material reduction. The efficiency of organic material reduction i.e. C/N, BOD and COD was in sequence namely 64.22 ± 0.02; 75.23 ± 0.02 dan 52.55 ± 0.04.
Aplikasi Model Peleg untuk Analisa Rehidrasi Tekwan Kering pada Beberapa Suhu Perendaman Marisa Tri Amanah; Hasbi -; Ari Hayati
Jurnal Keteknikan Pertanian Vol. 8 No. 3 (2020): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.08.3.81-88

Abstract

This study was aimed to apply Peleg Model to analyze rehydration of dried tekwan at several variations of water immersion temperature.  The method used was descriptive and experimental of one factor treatment (Non Factorial), which was immersion temperature with four treatments level (30, 45, 70 and 90oC), each treatment was done triplicate.  The parameter observed was moisture content at times of observation.  The result showed that the Peleg Model coefficients (K1 and K2) were inversely affected by the temperature.  The relationship was expressed into non-linear regression (polynomial) with R2 value of 0,973 and 0,988.  It showed that the obtained Peleg model could be applied adequately for the rehydration of dried tekwan at some immersion temperature. The resulting model also met the statistical criteria with the largest SEE and MRE values 6.73% and 3.58%. The model could predict the dried tekwan rehydration best at the temperature of 30oC and 45oC with the smallest SEE and MRE values.
Study of Water Requirements and Coefficient of Rice Crops (Oryza sativa L) in the Lebak Swamp Arjuna Neni Triana; Rahmad Hari Purnomo; Feldy Khalid
Jurnal Keteknikan Pertanian Vol. 9 No. 1 (2021): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.09.1.9-16

Abstract

Tujuan penelitian untuk mengetahui kebutuhan air dan koefisen tanaman padi di lahan rawa lebak. Metode penelitian yang digunakan pada penelitian ini adalah metode eksperimental dengan penyajian data secara deskriptif dalam bentuk tabel dan grafik. Parameter yang diamati meliputi kebutuhan air neto sawah untuk padi, nilai evapotranspirasi tanaman, nilai koefisien tanaman dan nilai perkolasi. Hasil penelitian menunjukkan bahwa kebutuhan air neto sawah berturut-turut adalah 3,26 mm/hari, 6,15 mm/hari dan 11,48 mm/hariHasil penelitian menujukkan bahwa kebutuhan air neto padi sawah bulan April sebesar 3,27 mm/hari, bulan Mei sebesar 11,71 mm/hari dan kebutuahan air padi bulan Juni 18,75. Kebutuhan air untuk tanaman padi dilahan rawa lebak selama masa tanam tidak sama setiap bulan. Pada bulan April sampai Juni berturut-turut adalah 3,26 mm/hari, 6,15 mm/hari dan 11,48 mm/hari. Pengukuran kebutuhan air awal tanam yaitu bulan April 3, 27 mm/hari, bulan Mei 11,71 mm/hari dilakukan Nilai evapotranspirasi aktual (ETc) dari fase pertumbuhan awal, fase vegetatif aktif, fase pembuahan, dan fase pematangan biji berturut-turut adalah 1,23 mm/hari, 2,57 mm/hari, 2,64 mm/hari dan 1,57 mm/hari, sedangkan untuk koefisien tanaman berturut-turut adalah 0,42; 0,89; 1,003 dan 0,62. Nilai evapotranpirasi dan koefisien tanaman terbesar terdapat pada umur pertumbuhan 31 sampai 65 hari atau fase pembuahan. Nilai perkolasi untuk setiap tahap pertumbuhan adalah 0,27 cm/hari, 3,24 cm/hari, 4,23 cm/hari dan 10,63 cm/hari.
Integrasi Metode Gravitasi dan Metode Perbandingan Eksponensial untuk Penentuan Pusat Distribusi Pangan di Kabupaten Halmahera Selatan Syamsul Bahri; Sutrisno Suro Mardjan; Emmy Darmawati; Bambang Pramudya
Jurnal Keteknikan Pertanian Vol. 8 No. 2 (2020): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.08.2.63-70

Abstract

AbstractThis study aims to determine the location of distribution centers in each islandgroup in South Halmahera Regency. Data sources were obtained from survey resultsand literature studies. Integration of Gravity Models and Exponential ComparisonMethods are used to determine the best location. Subdistrict of Kayoa as the locationof distribution centers for Kayoa-Makian islands group, Subdistrict of West Gane forGane islands group, Subdistrict of Bacan for Bacan-Kasiruta islands group, and theObi Subdistrict for Obi Islands group. The location chosen as the distribution centerin each island group is a main subdistrict which physically has better resourcecarrying capacity.
Rancang Bangun dan Pengujian Penghalang Heliks sebagai Pencampur Udara-Biogas pada Motor Otto Herbert Hasudungan Siahaan; Armansyah H Tambunan; Desrial; Soni Solistia Wirawan
Jurnal Keteknikan Pertanian Vol. 8 No. 3 (2020): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.08.3.89-96

Abstract

A helical barrier as air-biogas mixing device was designed and tested for direct use of biogas from digester in otto cycle generator set. Homogeneity of the air-fuel mixture can give better combustion reaction and increase engine power. The design was based on simulation, which shows that a 0.039 m length of helical barrier gave a 5% increase in power compared to non-helical barrier. Likewise, the simulations also showed that the helical barrier reduced specific fuel consumption (SFC) by 8%. Accordingly, the mixer with helical barrier was designed, and fabricated. Its performance test confirms the improvement resulted by using helical barriers as air-biogas mixer in the engine. The experiment showed that the power increased by 5% when using helical barrier, while SFC decreased by 4.5%. It is concluded that the helical barrier can increase the homogeneity of the mixture resulting in better engine performance. Besides, emissions produced from the engine using a helical barrier also decreased.

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