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Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Published by Universitas Mataram
ISSN : 23018119     EISSN : 24431354     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Terhitung sejak tahun 2014, Program Studi Teknik Pertanian Fakultas Teknolgi Pangan dan Agroindustri Universitas Mataram telah menerbitkan secara online Jurnal Ilmiah Rekayasa Pertanian dan Biosistem (JRPB) sehingga dapat diakses secara luas. Jurnal ini pada umumnya memuat hasil-hasil penelitian dari mahasiswa, peneliti, akademisi, praktisi, dan pemerhati di bidang teknik pertanian dan biosistem. JRPB berupaya menjaga eksistensi penerbitannya dan berharap jurnal ini dapat menjadi salah satu media publikasi bagi semua pihak yang meminati kajian-kajian ilmiah dalam bidang ilmu Teknologi Pertanian.
Arjuna Subject : -
Articles 177 Documents
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Pengeringan Lapis Tipis Kopra Putih Menggunakan Oven Pengering: White Copra Thin Layer Method using Drying Oven Murad Murad; Rahmat Sabani; Guyup Mahardhian Dwi Putra
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 3 No 2 (2015): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (300.823 KB)

Abstract

West Nusa Tenggara has enormous potential as coconut producer in Indonesia. With total area 64.297,10 ha, it can produced coconuts in amount of 49670.93 tons (NTB in Figures, 2010). Most of the coconut was sent to Java Island, whereas some local communities process the coconuts into copra and traditional coconut oil. However, NTB as producer of copra has not been able to produce good quality copra because the traditional process is conducted using simple processing equipment, requires large human power, and long processing time. Due to these limitiation, it is necessary to implement appropriate technology by using shelf-type dryer (tray dryer) tool that utilizes solar energy as a source of thermal energy. Using solar collectors panel, the dryer produce heat higher than using direct drying and the temperature can be controlled. Purpose of this study was to determine characteristics of copra drying processes (temperature, relative humidity, effective drying rate, and relation between effective drying rate and water content) using oven as ideal drying tool, for further application on solar-energy tray-dryer type. Drying was conducted until water content achieved 9%, the observed and calculations data were plotted into graphic then studied descriptively. Calculated variables are reduction in weight material, moisture content, drying air temperature, ambient air temperature, outflow air temperature, material temperature, air humidity, drying efficiency, air flow rate, and intensity of solar radiation. Constant value indicates that the higher the drying air temperature, the more rapid time were needed to decrease moisture content of the material, therefore the obtained general equation for water content ratio becomes MR = exp (-0,0141.T - 0.2583) * t.
APLIKASI PROGRAM LINEAR DALAM PEMBUATAN FORMULASI COOKIES DARI TEPUNG KOMPOSIT (JAGUNG, KACANG KEDELAI DAN BONGGOL PISANG BATU) Hariadi, Hari; Effendi, Supli; Sutisna Achyadi, Nana
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 5 No 1 (2017): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (202.444 KB) | DOI: 10.29303/jrpb.v5i1.46

Abstract

Tujuan penelitian adalah mempelajari formulasi tepung komposit dengan mengoptimalkan penggunaan bahan baku tanpa mengurangi mutu yang dihasilkan. Metode yang digunakan adalah penerapan linier programming. Faktor pembatas yang digunakan yaitu perbandingan bahan baku dari tepung komposit, nilai pembatas diambil dari SNI No. 01-2973-1992. Faktor kendala adalah harga bahan baku yang digunakan. Hasil penelitian tahap pertama menghasilkan karakteristik tepung yang sesuai dengan syarat mutu SNI. Analisis kimia untuk tepung jagung adalah karbohidrat sebesar 70,45 %, protein 8,96 %, kadar lemak 4,00 % dan kadar air 3,14 %; tepung kacang kedelai mengandung karbohidrat sebesar 37,80 %, protein 35,60 %, lemak 20,16 % dan kadar air 2,83 %; sedangkan tepung bonggol pisang batu mengandung karbohidrat sebesar 66,20 %, protein 3,40 %, lemak 0,00 % dan kadar air 9,28 %. Hasil penelitian tahap kedua, dari lima formulasi yang feasible, didapatkan formulasi 5 sebagai formula optimal terpilih. Berdasarkan uji kesukaan, formulasi ini menghasilkan cookies dengan warna, aroma, rasa dan tekstur paling baik; berdasarkan hasil program linier dihasilkan biaya produksi terendah, yaitu Rp 1.734,400,- per 100 gram; serta berdasarkan analisis kandungan zat gizi, dari linier programming, formulasi 5 mengandung protein 6,80 gram, karbohidrat 55,03 gram, lemak 16,50 gram, energi 396,14 kkal, dan kadar air 13,16%; sedangkan berdasarkan analisis kimia diperoleh protein 13,47 gram, karbohidrat 60,12 gram, lemak 16,82 gram, energi 446,82 kkal, dan kadar air 2,14 %. Produk tersebut telah memenuhi syarat dari SNI No. 01-2973-1992 dan lebih tinggi dibanding produk cookies yang ada di pasaran. Berdasarkan uji hedonik, formulasi 5 mempunyai nilai tertinggi dari segi uji organoleptik, analisis kandungan gizi, serta analisis biaya dibanding dengan formula lainnya. Produk cookies terpilih sudah memenuhi acuan yang dianjurkan. Persentase sumbangan cookies adalah 22,34% untuk energi dan 30,53% untuk protein. Kata kunci: bonggol pisang batu, cookies, jagung, kacang kedelai, tepung komposit
Rancang Bangun Dan Uji Kinerja Mesin Pencacah Rumput Gajah Untuk Pakan Ternak Dengan Menggunakan Pisau Tipe Reel (Construction Design and Test Performance of Elephant Grass for Cattle Feed using Reel Type Knife): Construction Design and Test Performance of Elephant Grass Cutting Machine for Cattle Feed using Reel Type Knife Wahyu K. Sugandi; Asep Yusuf; Muhammad Saukat
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 4 No 1 (2016): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

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Abstract

Elephant grasses demand for cattle feed in Lembang area is increasing in quantities, however qualities of the cutting grasses have not achieved the demand of cattle feed, i.e. length of some of cutting grasses found above 5cm. Therefore, research about elephant grasses cutting technology in order to achieve the standard of forages (cattle feed) production, i.e. 1-5 cm cutting grasses length, need to be conducted. Aimed of this research was to develop machine that could cut elephant grasses by using precision cutting mechanism on the required dimension (1-5 cm). Method used in this research was engineering method using step as follow: (1) Measurement of elephant grasses characteristic; (2) Design analysis of cutting machine, which covered design of the cutter knife, hopper design, frame and transmission system; (3) Construction of elephant grasses cutting machine; (4) Functional test of elephant grasses cutting machine; (5) Test performance of elephant grasses cutting machine; and (6) Measurement of the cutting grasses. Result showed that physical characteristic of elephant grasses were as follow: average length of grass leaves 99.4 cm, leaves wide 2.65 cm, leaves thickness 0.23 cm, and leaves weight 7.8 g. Machine dimension was 800 mm length, 750mm wide, and 104mm height. Power need to cut elephant grasses was 1.6 kW and machine capacity 1988 kg/hour. Length of the produced cutting grasses was 1-3 cm.
PERFORMANSI TRAKTOR TANGAN RODA DUA MODIFIKASI MENJADI RODA EMPAT MULTIFUNGSI (PENGOLAHAN DAN PENYIANGAN) UNTUK KACANG TANAH DI KABUPATEN LOMBOK BARAT Zulpayatun -; Cahyawan Catur Edi Margana; Guyup Mahardhian Dwi Putra
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 5 No 1 (2017): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (628.308 KB) | DOI: 10.29303/jrpb.v5i1.40

Abstract

Tujuan dari penelitian ini adalah untuk melakukan uji performansi traktor tangan roda empat multifungsi melalui pengujian pada dua fungsi, yakni sebagai mesin pengolahan tanah dan penyiangan. Penelitian ini dilaksanakan di Desa Aik Ampat Kecamatan Gerung Kabupaten Lombok Barat dengan menggunakan traktor tangan roda empat. Metode yang digunakan adalah metode eksperimental yang dilakukan di lapangan. Parameter yang diukur adalah kapasitas lapang aktual, kapasitas lapang teorotis, waktu hilang, efisiensi pengolahan tanah, dan efisiensi penyiangan dengan menggunakan empat variasi kecepatan dan tiga kali ulangan untuk tiap kecepatan. Hasil penelitian menunjukkan bahwa, semakin rendah kecepatan, nilai kapasitas lapang teoritis (Kt) semakin rendah. Nilai kapasitas lapang aktual (Ka) tertinggi terdapat pada kecepatan 6 km/jam, sebesar 0,14312 ha/jam untuk 1 bajak dan 0,11314 ha/jam untuk 3 bajak. Waktu hilang tertinggi pada pengolahan tanah dengan 3 bajak pada kecepatan 4,44 km/jam sebesar 45,57 % dan terendah dengan satu bajak pada kecepatan 5,29 km/jam yaitu 4,23 %. Kedalaman pembajakan tertinggi pada kecepatan 5,29 km/jam pengolahan tanah dengan tiga bajak yaitu pada pada bajak sebelah kiri sebesar 0,076 m dan terendah pada kecepatan 6 km/jam pada bajak tengah sebesar 0,012 m. Pengolahan tanah dengan kecepatan 6 km/jam memiliki efisiensi yang paling tinggi diantara kecepatan lainnya baik pengolahan tanah dengan satu bajak maupun tiga bajak masing-masing sebesar 91,74% dan 72,53%. Pada efisiensi penyiangan, kecepatan 6 km/jam memiliki efisiensi penyiangan paling tinggi dibandingkan kecepatan yang lain yaitu sebesar 92,67%. Kata kunci: efisiensi, kapasitas lapang, traktor tangan.
Karakteristik kimia dan organoleptik minyak goreng bekas hasil penyaringan dengan penambahan Vitamin E: The Chemiccal And Organoleptic Properties Of Used Coconut Oil Efficacy Of Filtration And Tocoferol Addition Agustono Prarudiyanto; Eko Basuki; Ahmad Alamsyah; Dody Handito
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 3 No 1 (2015): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

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Abstract

Replication of using coconut oil for frying many times may have negative impact on health. This research was to investigate the effect of filtration with activated carbon and addition of tocoferol on chemical and organoleptic properties of used coconut oil. The experiments were conducted in laboratory and arrangeed with Completely Randomized Design with 4 replications. The treatments were :V1 = addition of tocoferol 10+1 mg in used coconut oil 150+1 g.V2 = addition of tocoferol 20+1 mg in used coconut oil 150+1 g.V3 = addition of tocoferol 30+1 mg in used coconut oil 150+1 g.V4 = addition of tocoferol 40+1 mg in used coconut oil 150+1 g.V5 = addition of tocoferol 50+1 mg in used coconut oil 150+1 g.There are 20 experiments unit totally. Data was analyzed with analysis of variancees at 5 percent significant level. Polynomial ortogonal test was applied at the same significant level if there were found significantly difference among treatments of moisture content, rendemen, peroxide value, free fatty acid and iodium value and Least Significant Difference test for parameter of color and odor (Yitnosumarto, 1991). The result showed that no significant differences found on addition of tocoferol the used coconut oil. The moisture, free fatty acid and peroxide value of the oil tend to increase and decrease when it filtered with activated carbon. However, the iodium value was vise versa. The addition of tocoferol was unable to improve the oil quality. The oil without filtration had browniesh yellow colour, and become dark yellow with filltration using activated carbon. The oil odor was very unpleasent without filtration and rather unpleasent with filtration. The addition of tocoferol was uneffective to enhance the oil quality, but a little improvement of oil odor was found if it compared to the used oil with or without filtration. The rendemen of the used oil filtration was around 75,81 percent.
Perancangan Sistem Kendali Suhu Pada Mesin Pengering Hybrid Menggunakan Metode Fuzzy Logic: Design of Temperature Control System on Hybrid Drying Machine using Fuzzy Logic Method Dhimas Satria; Erny Listijorini; Muhammad Ramdhan Nurghodan
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 3 No 2 (2015): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

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Abstract

Food security is condition related to food supply sufficient in quantity and quality, safety, diversity, nutritious content, equitability and affordability. Post harvest handling of paddy is a very strategic effort in order to support the increase of rice production and food security. Drying is an activity on post harvest that aimed to reduce water content. Various type of paddy’s drying machine has been constructed to enhance drying process. However, most drying machine constructed in large dimension and operated using fossil fuel. To overcome these problems, hybrid technology is proposed, i.e. grain-drying machine using combination of solar and biomass energy. This machine is equipped with fuzzy logic control system using microcontroller Arduino Mega 2560 R3 as fan velocity control center based on reading of sensor HT11 that able to detect temperature and humidity in drying room also sensor K Type thermocouple Max6675 that detect temperature in combustion chamber and heat exchanger. This research aimed to support continuity of drying process in order to determine each sensor’s period to achieve their setting point. Based on 90 minutes trial period, the result show maximum temperature reduction 2,17% (wet basis), maximum temperature 50ºC, setting point for temperature (45ºC) achieved in 60 minutes, minimum humidity 18%, and setting point for humidity achieved in 30 minutes.
Karakteristik Dan Simulasi Sistem Kontrol Hidrolik Pada Proses Pengepresan Biji Jaraks Kepyar (Ricinus Communis L.): Characteristic and Simulation of Hydraulic Control System onCastor Beans (Ricinus communis L.) Press Processing Asih Priyati; Ansar Ansar; Sirajuddin Haji Abdullah
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 3 No 2 (2015): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

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Abstract

This research aimed to study characteristic of hydraulic control system of castor beans pressing process. Experimental approach was conducted by using Complete Randomized Design to obtained relation between pressure’s variable and characteristics parameters of hydrolic control system and pressing process. Effet of pressure loading were investigated at 3, 5, 7, 9, and 11 kg, which replicated three times in order to obtained 15 units experiment. Characteristics parameters of hydraulic control system are pressure velocity, pressure, and pressure power. Pressing process parameters are distance of displacement, capacity of pressing process, and rendement. Result from this research showed that the hydraulic control system was able to transfered power using hydraulic oil in order to conduct pressing process. Higher loading pressure caused increasing pressure velocity, pressure, pressure power, pressing process capacity, and rendement. Whereas, lower loading pressure caused reduction on distance of displacement. Therefore, development on design is necessary to obtain optimal rendement quantity and further studies using extended pressure loading range is recommended.
RANCANG BANGUN REAKTOR BIOGAS TIPE PORTABLE DARI LIMBAH KOTORAN TERNAK SAPI Guyup Mahardhian Dwi Putra; Sirajuddin Haji Abdullah; Asih Priyati; Diah Ajeng Setiawati; Surya Abdul Muttalib
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 5 No 1 (2017): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (791.537 KB) | DOI: 10.29303/jrpb.v5i1.49

Abstract

Tujuan dari penelitian ini adalah (1) merancang reaktor biogas skala kecil dan portable dan (2) menganalis kualitas uji nyala api biogas dengan memperhatikan suhu, pH, dan tekanan. Metode yang digunakan pada penelitian ini adalah metode eksperimental dengan mengukur parameter suhu reaktor biogas, tekanan, derajat keasaman (pH) dan volume gas yang dihasilkan. Penelitian ini menggunakan bahan kotoran sapi dan air dengan perbandingan 1:2 pada kapasitas 200 liter. Pengambilan data dilakukan selama 37 hari. Hasil dari penelitian ini adalah sebuah alat biodigester skala laboratorium tipe floating drum atau terapung yang terbuat dari bahan plastik dan fiber glass dengan diamater reaktor 52 cm dan tinggi 92 cm. Volume biogas yang dihasilkan selama 37 hari adalah 2,721 m3 dengan ata-rata pembentukan gas sebesar 0,074 m3/hari dan laju pembakaran 66,44 liter/jam. Kata kunci: biogas, kotoran sapi, lama pembakaran, volume
Analisis Peluang Curah Hujan Untuk Penetapan Pola Dan Waktu Tanam Serta Pemilihan Jenis Komoditi Yang Sesuai Di Desa Masbagik Kecamatan Masbagik Kabupaten Lombok Timur: Analysis on Rainfall Probability for Determine Pattern and PlantingPeriodand Selection of Appropriate Commodity at Masbagik Village in Masbagik District East Lombok Iga Dainty; Sirajuddin H. Abdullah; Asih Priyati
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 4 No 1 (2016): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (515.024 KB)

Abstract

Climatic factor, such as rainfall, greatly contributes to the availability of water for crops. Farmers set a schedule and cropping patterns based on habits, such as the period of rainy month. This method is lack precision on determining crops pattern and often increasing the risk of crop failure. This study aims to determine rainfall probability in Masbagik village on growing season of 2015-2016. Research method was descriptive analytical method. Results of this research revealed that the general rainfall pattern of the study area was still following general pattern of the previous year. Rain probability that approached natural precipitation at the field of study was 50%, with the highest limits at December by 304.5 mm and the lowest at October by 37 mm, while general rainfall probability was normal. Rainy season was predicted to start at mid-November and end at early June, while dry season occurs from early May and end in early November. Recommended scenario of the first growing season for the crop is starting at mid-November until the end of February and the second growing season start at mid-March until June 2015. Moreover, planting time for growing rice can be carried out at mid-October, while from early March growing crops is more suitable.
ANALISIS KESERAGAMAN ASPEK FERTIGASI PADA DESAIN SISTEM HIDROPONIK DENGAN PERLAKUAN KEMIRINGAN TALANG Medi Sopian Asmana; Sirajuddin Haji Abdullah; Guyup Mahardhian Dwi Putra
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 5 No 1 (2017): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1033.134 KB) | DOI: 10.29303/jrpb.v5i1.41

Abstract

Hidroponik merupakan teknologi bercocok tanam tanpa tanah dengan media yang digunakan adalah air dan nutrisi. Hidroponik dibagi menjadi beberapa system, yaitu sistem hidroponik aeroponik, NFT (Nutrient Film Technique), irigasi tetes, sistem fertigasi dan sistem wick. Pada penelitian ini digunakan sistem hidroponik NFT (Nutrient Film Technique) dengan aspek fertigasi. NFT (Nutrient Film Technique) aspek fertigasi merupakan sistem hidroponik dengan meletakkan akar tanaman pada lapisan air yang dangkal dan air tersebut tersirkulasi selama 24 jam serta mengandung nutrisi sesuai kebutuhan tanaman. Tujuan dari penelitian ini adalah menganalisis keseragaman sistem fertigasi pada aplikasi hidroponik NFT (Nutrient Film Technique) berdasarkan kemiringan talang. Metode penelitian yang digunakan adalah metode eksperimental dengan percobaan di lapangan. Adapun parameter penelitian yang diamati adalah keseragaman irigasi, keseragaman konduktivitas listrik, dan pH larutan nutrisi. Kemiringan yang digunakan pada penelitian ini adalah 2%, 4% dan 6%. Dari hasil penelitian didapatkan nilai rata-rata keseragaman irigasi pada ketiga perlakuan tersebut berturut-turut 99,49%; 99,27%; dan 99,27%. Nilai rata-rata keseragaman konduktivitas listrik berturut-turut 99,37%; 99,29% dan 99,25%. Sedangkan untuk pH berturut-turut 99,04%; 99,27%; dan 99,22%. Dari hasil uji keseragaman diperoleh bahwa pada ketiga perlakuan tersebut menunjukkan semua parameter memilki keseragaman. Kata kunci: fertigasi, hidroponik, keseragaman, NFT

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