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Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)
Published by Universitas Lampung
ISSN : 2302 559X     EISSN : 2549 0818     DOI : -
Core Subject : Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Engineering
Jurnal Teknik Pertanian Lampung or Journal of Agricultural Engineering (JTEP-L) is a peer-reviewed open-access journal. The journal invites scientists and engineers throughout the world to exchange and disseminate theoretical and practice-oriented researches in the whole aspect of Agricultural Enginering including but not limited to Agricultural Mechanization, Irrigation, Soil and Water Engineering, Postharvest Technology, Renewable Energy, Farm Structure, and related fields. The first issue was published in October 2012 by Department of Agricultural Engineering, Faculty of Agriculture, University of Lampung. Jurnal Teknik Pertanian Lampung has ISSN number 2302 - 559X for print edition on October 10, 2012 then 2549 - 0818 for online edition on January 10, 2017. Jurnal Teknik Pertanian Lampung is issued periodically four times a year in March, June, September, and December. Jurnal Teknik Pertanian Lampung has been indexed by Google Scholar, Crossref, Directory Open Access Journals (DOAJ), and CABI. Since Volume 5 Issue 1 (2016) Jurnal Teknik Pertanian Lampung has been accredited as SINTA 3 by Directorate General of Higher Education (DIKTI). Starting Volume 10 Issue 3 (2021) the journal received accreditation SINTA 2.
Arjuna Subject : -
Articles 1,077 Documents
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Penambahan Tepung Ubi Ungu (Ipomea batatas L.) Terhadap Sifat Organoleptik dan Kimia dalam Pembuatan Pizza Andra Tersiana Wati; Ertha Martha Intani
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 4 (2021): Desember
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i4.488-495

Abstract

 Purple sweet potato flour (Ipomea batatas L.) can be developed as a partial substitute in processing wheat flour-based food products such as pizza. Pizza has a thin round shape with the addition of various toppings on it. This study aims to determine the effect of adding purple sweet potato flour in pizza making on the organoleptic and chemical characteristics of the resulting pizza product. There were 6 variations of pizza with purple sweet potato flour substitution concentration of 0%, 10%, 20%, 30%, 40% and 50%. This study used a completely randomized design method with two repetitions. The resulting pizzas were tested sensory including preference tests as well as differentiation tests (sweet potato flavor, sweet potato aroma, dark purple color, and soft texture). Furthermore, the selected pizzas were analyzed chemically, including proximate analysis and antioxidant activity. Based on statistical tests showed that the addition of purple sweet potato flour was quite favorable at a concentration of 30% with a water content of 44.45%, ash content of 3.48 (% db), protein content 10.26 (%db), carbohydrate content 74.89 (%db) with energy 239.58 (cal/100 g) and antioxidant activity (RSA) 71.26%. Keywords: antioxidant activity, pizza, purple sweat potato flour, purple sweat potato, sensory test
UJI LAPANG MESIN PENGOLAHAN SAGU PRODUKSI BENGKEL PERMESINAN AGROINDUSTRI UNIVERSITAS PAPUA Darma Darma; Reniana Reniana; Arbianto Arif Moh.
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 9, No 3 (2020): September 2020
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v9i3.191-200

Abstract

Papua and West Papua Province have the large potential of sago palm (Metroxylon sagu), however, until now the production and utilization is very low compared with its potential. This is because of most farmers in this area still use traditional method in processing sago.  The traditional method is labour intensive and time consuming process.  Sago farmers in this area still apply traditional ways to process sago starch due to the lack of processing machines. The objective of this research was to conduct field testing of sago processing  machine produced by Agroindustry Machinery Workshop of Papua University. The machines that have been tested consist of cylinder type sago rasping machine and stirrer rotary blade sago starch extraction machine. The machine’s performance under field condition was evaluated by measuring parameters (a) rasping capacity, (b) extraction capacity, (c) starch percentage, (d) starch yield and (e) starch loss in waste. Results showed that all parts of the machine are functioning properly and farmers can easily operate the machine.  The performances of the machines under field condition were (a) rasping capacity 1,159. 8 kg/hour, (b) extraction capacity 243.8 kg/hour, (c) starch percentage 38.26 %, (d) starch yield 93 kg/hour   and (e) starch loss in waste 1.03 %.   Keywords: cylinder type, field test, rasping machine, sago processing, starch percentage
Cover Volume 9 Nomor 4 Desember 2020 Ahmad Tusi, MSi
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 9, No 4 (2020): Desember 2020
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v9i4.%p

Abstract

METODE PENGEMASAN TAUGE KACANG HIJAU MENGGUNAKAN PLASTIK POLIETILIN DAN POLIPROPILIN PADA PENYIMPANAN SUHU RENDAH Ansar Ansar; Sukmawaty Sukmawaty; Murad Murad; Isna Hilda Arini
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 1 (2021): Maret
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i1.119-128

Abstract

Green bean sprouts are a type of vegetable that has a short shelf life. To extend the shelf life of these vegetables, they need to be stored by appropriate packaging methods. The aim of this study was to apply polyethylene (PE) and polypropylene (PP) plastic packaging to increase the shelf life of mung bean sprouts. The research was conducted by packing mung bean sprouts in PE and PP plastic at storage temperatures of 10 and 29 °C for 9 days. The parameters observed were weight loss, respiration rate, color, moisture content, and aroma. The results showed that mung bean sprouts stored in PE packaging had a longer shelf life than PP packaging. The shelf life of mung bean sprouts using PE packaging is 5 days, while PP packaging can only last 3 days at 10 °C. The shelf life of mung bean sprouts using PE packaging is 4 days, while the PP packaging can only last 2 days at 29 °C. Keywords: green bean sprouts, packaging, PE plastic, storage, temperature
TREN PERUBAHAN CROP WATER PRODUCTIVITY KAKAO (Theobroma cacao L. ) DI D.I. YOGYAKARTA Eka Suhartanto; Lisma Safitri
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 9, No 3 (2020): September 2020
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v9i3.237-247

Abstract

The studies on the Crop Water Productivity (CWP) of cocoa to increase productivity in the midst of water scarcity and climate change are currently underdeveloped. Thus, this study aims to find out the trends in climate, productivity, crop water use and CWP of cocoa plantations. The methods included collecting climate and productivity data during 2014-2019, simulating crop water use with Cropwat 8.0 software and analysing the changing trends of CWP in cocoa plantations, DI Yogyakarta. The results indicated the changes in productivity of cocoa plantation ranged from 0,41 – 0,53 tons / ha. The Crop Water Usage (CWU)  decreased from 11.107 m3 in 2014 to 8.482 m3 in 2019 under rainfed schenario. Subsequently, the trend of CWP tended to increase from 0,037 kgm-3 in 2014 to 0,059 kgm-3 in 2019. CWP of cocoa plantation increased when CWU decreased and productivity increased. CWP value illustrated that every 1 m3 of water used have produced 0,037 – 0,059 kg of dried cocoa beans. In terms of water use efficiency, this relatively small CWP value indicates that the level of water use by cocoa plants in DI Yogyakarta is inefficient that requires improvement in the future such as increasing land productivity and precision irrigation schemes for cocoa plantations.  Keywords: Cacao (Theobroma cacao L.), crop water productivity, crop water use, D.I Yogyakarta
Uji Kinerja Mesin Pengiris Singkong Tipe Vertikal Annisa Nur Ichniarsyah; Eka Widiono; Titis Pury Purboningtyas
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 4 (2021): Desember
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i4.530-536

Abstract

Several efforts to improve the efficiency and effectiveness of slicing cassava machine had been conducted. One of them including the development of a prototype cassava slicing machine. This machine has types and classification based on slicing capacity. The purpose of this study was to conduct a machine performance test (verification test, performance test, and ergonomics test), to compare its performance with SNI 0838-1:2014, to analyze the constraints of a vertical cassava slicing machine. A quantitative research approach and descriptive explanatory method were used by observing, measuring, and calculating, the testing of cassava slicing machine. Verification test was to check the suitability of the type and type of engine, motor, transmission type, slicing unit, engine frame, and other supporting components in accordance with the specifications. The performance results of the slicing machine displayed that its capacity was 18.51 kg/hour and performance efficiency of 74.05%. The slicing test obtained an average thickness was 0.73 mm, uniformity level of 64.2%, and damage rate around 9.67%. Ergonomics tests showed that the machine was quite in accordance with the comfort of the operator. There were some obstacles that need evaluations such as the difficulty in adjusting slicing blade, transmission, and technical specifications of the cassava slicing machine. Therefore, the cassava slicing machine needed improvement so that it conforms to the requirements that refer to SNI 0838-1:2014.  Keywords: cassava, performance test, slicing, slicing machine, testing
Karakteristik Mutu Jamur Tiram (Pleurotus ostreatus) Menggunakan Berbagai Metode Pengemasan pada Penyimpanan Suhu Rendah Ayu Aulia Aftukha; Dian Purbasari
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 3 (2021): September
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i3.327-337

Abstract

Oyster mushrooms (Pleurotus ostreatus) include holticulture products that have a high moisture content. High water content can speed up the process of respiration rate, causing oyster mushrooms to easily damage. An alternative that can be used to overcome the problem of oyster mushroom damage is to slow down the rate of respiration by packaging. The purpose of this study is to analyze the quality characteristics of oyster mushrooms as well as the influence of packaging methods and storage time at low temperatures (5 °C). This study used two factors, namely packaging method and storage length. The data was analyzed using factorial anova two mix factors with tests (a = 5 %), if obtained differently real then conducted follow-up test Tukey. The results showed the best packaging method is found in vacuum packaging with the highest texture value of 0,004 N/mm2. The highest color brightness value is 83,15. The lowest moisture content value is 88%. The lowest water activity value was 0,895 and the lowest weight was 2,47%. Keywords: oyster mushrooms, packaging, storage, temperature, quality
MODIFIKASI MESIN ROASTING BIJI KOPI MEREK WILIAM EDISON TIPE W600I (STUDI KASUS PADA JAVA SUMEDANG COFFEE, KABUPATEN SUMEDANG, JAWA BARAT) Ahmad Thoriq; Wahyu K Sugandi; Asep Yusuf; Luthfie Hafidz Imaduddin
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 9, No 4 (2020): Desember 2020
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v9i4.276-286

Abstract

Beberapa kelemahan mesin penyangrai William Eddison W600i antara lain  tekanan gas bahan bakar tidak terkontrol, dan sistem pengeluaran asap (exhaust) yang tidak optimal menghisap asap dan kulit sekam kopi pada ruang penyangrai. Permasalahan tersebut berimplikasi pada biji kopi sangrai yang masih mengandung asap (smoky). Penelitian ini bertujuan melakukan modifikasi dan uji kinerja terhadap mesin penyangrai William Eddison W600i. Metode yang digunakan pada penelitian ini dilakukan melalui pendekatan rekayasa untuk memodifikasi exhaust fan mesin penyangrai biji kopi. Data hasil pengujian mesin dianalisis secara deskriptif. Hasil penelitian menunjukkan rata-rata suhu pada ruang penyangrai sebelum modifikasi sebesar 217,11oC, kadar air 2,42%, laju penyangraian 0,09%/menit, efisiensi penyangraian sebesar 18,55, kulit sekam sisa penyangraian 4,6g, konsumsi bahan bakar 0,5 kg/jam. Sedangkan rata-rata suhu pada ruang penyangrai sesudah modifikasi sebesar 212,11oC, kadar air 2,44%, laju penyangraian 0,08%/menit, efisiensi penyangraian sebesar 18,36, kulit sekam sisa penyangraian 3,4g, konsumsi bahan bakar 0,5 kg/jam. Kata kunci : biji kopi, mesin penyangrai, modifikasi mesin
PROSES PEMBERSIHAN SYNGAS HASIL GASIFIKASI TEMPURUNG KEMIRI MENGGUNAKAN SIKLON Jemseng Carles Abineno; Johny Agustinus Koylal
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 1 (2021): Maret
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i1.10-15

Abstract

This study aims to examine the process of cleaning for synthesis gas (syngas) resulted from candlenut shell gasification by using a cyclone. Research was started by design or manufacture a cyclone as a tool that can condense the tar carried in the syngas produced from the gasification process. This tool was tested with by trial and error such that got a tool that can function optimally to condense tar. The syngas cleaning experiment using the cyclone was conducted by four treatments, namely S1 (1 cyclone), S2 (2 cyclones), S3 (3 cyclones), and S4 (4 cyclones).  All treatments were repeated 4 (four) times, so there were 16 experimental units. The parameter measured is the amount of tar that was condensed on the cyclone. Result showed that the syngas cleaning process using a cyclone worked well, and the best treatment was S3 (3 cyclones) with an average amount of condensed tar of 141.7 ml/kg of shell. The use of cyclones can condense tar and other particulates carried in the syngas. The cleaned syngas can be applied as fuel in an internal  combustion engine as a substitute for diesel and gasoline fuels.       Keywords: gasification, syngas, cleaning, cyclone
Rekayasa Mesin Perajang Tembakau Mole Wahyu K Sugandi; Ahmad Thoriq; Asep Yusuf; Firdaus Firdaus
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 4 (2021): Desember
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i4.459-467

Abstract

Sukasari in Sumedang areas is one of the areas producing mole tobacco with the best quality with a production capacity of 1.2 tons.ha-1 once harvested. However, the tobacco chopping system has been still conventional which results in the inhibition of tobacco supply from producers (farmers) to consumers. The tool used was to use a knife to slice rolled tobacco with a chopping capacity of 35 kg per 2 worker per day. So the time was need to chopped 1.2 tons of tobacco in 35 days. Besides to long processing time, farmers often feels of back pain sick and right hand cramps, considering the average age of farmers have been above 50 years because the chopping process is carried out every day when the harvest season arrives. Therefore, a study need regarding the engginering design and technical analysis of tobacco chopper machines so that the chopping capacity can the production capacity of 1.2 tons.ha-1. The aims of study is to design a prototype tobacco chopper machine with a capacity of 140 kg.hour-1. This method used in this research is engineering design which is to carry out a design activity that is not routine, so that in it there is a new contribution, both in form and product.  The result of the technical analysis of this tobacco chopper machine is that the chopping power is 0.59 HP, the dimensions of the chopper machine are 800 mm (length) x 757 mm (width) x 1000 mm (height) with the prime mover using a 1 HP electric motor. Actual capacity based on measurement is 66 kg/hour with 96.7% yield. Keywords: chopper machine, engine design, mole tobacco

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