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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.
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Articles 16 Documents
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Search results for , issue "Vol 10, No 4 (2021): Desember" : 16 Documents clear
Rancang Bangun Alat Pengasapan Ikan dengan Metode Pengasapan Panas (Hot Smoking) dan Pengasapan Dingin (Cold Smoking) Emai Rizkita Br Karo; Indah Widanarti; Yosefina Mangera
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.v10i4.504-514

Abstract

The purpose of this study was to produce a fish smoking device for hot smoking and cold smoking methods. This study used 3 types of fish, namely paha fish (Leptobrama sp.), stingray (Dasyatis sp.), and tilapia fish (Oreochromis mossambicus), and the fuel used as fuel for smoking is coconut shell. The data measured included smoking room temperature data, fish weight before and after smoking. The data obtained were analyzed descriptively. The results showed that smoking fish using hot smoking and cold smoking methods with specifications, length 50 cm, width 50 cm, overall height 83 cm. This tool consists of three main components, namely, a fumigation chamber which is combined with a hot smoking biomass combustion chamber, a cold smoking biomass combustion chamber and a connecting pipe. The performance test of the tool was carried out by calculating the weight loss of fish during hot smoking and cold smoking. The smoking time used for hot smoking is 2 hours (temperature 50 – 75℃) and cold smoking 4 hours (30 – 45 ℃). The results showed that the highest percentage of weight loss during hot smoking occurred in stingrays on the second shelf, which was 29.25%, while the highest percentage of weight loss during cold smoking occurred in stingrays on the first shelf, which was 23.79%. The weight loss of fish in both hot and cold smoking is strongly influenced by the smoking time, the distance between the smoking rack and the heat source and the type of fish. Keywords : cold, heat, shrinkage, smoking, weight
Penerapan Analisis Runtun Waktu pada Peramalan Penjualan Produk Organik menggunakan Metode Moving Average dan Exponential Smoothing Irfan Ardiansah; Irsyad Fauzi Adiarsa; Selly Harnesa Putri; Totok Pujianto
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.v10i4.548-559

Abstract

The purpose of this study is to answer the problem of procurement of goods and minimize goods reaching expiration due to too long storage time, then as a provider of information about the forecasting system at Warung Sehat 1000 Kebun, then to predict sales of goods at Warung Sehat 1000 Kebun and identify how many goods that have been sold. This research uses a quantitative approach. The data used in this study is sales data for 2 (two) months with 30 lines of data and a total of 3 types of goods studied, namely sales data of pakcoy, cocofresh and free-range chicken eggs. The method used starts from data collection, forecasting calculations, forecasting testing, forecasting selection, and forecasting application. The forecasting methods used are moving average and exponential smoothing, by testing the mean absolute deviation, mean square error, and standard deviation. Forecasting results yielded outputs for pakcoy products as much as 1583.33 grams, for cocofresh products as many as 11 pcs and for chicken eggs as many as 9 pcs. Keywords:  exponential smoothing, forecasting examination, time series data, moving average
Efek Fermentasi Basah Menggunakan Kultur Saccharomyces cerevisiae Terhadap Sifat Kimia dan Sensori Kopi Robusta (Coffea canephora) Dyah Putri Larassati; maria erna kustyawati; dewi sartika; suharyono AS
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.v10i4.449-458

Abstract

High levels of caffeine in Robusta coffee beans can be reduced by Wet coffee fermentation. Saccharomyces cerevisiae an excellent hydrolytic enzyme producer has important role in food fermentation. This study aims to determine the interaction between the addition of Saccharomyces cerevisiae and fermentation time on the chemical and sensory properties of the coffee produced. This research was conducted using a complete randomized block design factorial with two factors. The first factor is was the coffee fermentation time (T) consisting of four levels, 12(T1), 24(T2), 36(T3) and 48(T4) hours. The second factor was the addition of Saccharomyces cerevisiae culture consisting of three levels, without the addition of culture (S0), addition of 1% S. cerevisiae culture (S1), and the addition of 3% S. cerevisiae culture (S2). Further data analysis was done by using the Orthogonal Polynomial test.  The best results in this study was the addition of 1% Saccharomycess cerevisiae and 48 hours of fermentation time producing the ground coffee with a water content of 6.43%, an ash content of 4.49%, a taste score of 3.17 (rather typical of coffee), a score aroma of  2.83 (somewhat typical of coffee), overall acceptance of 3.00 (somewhat typical of coffee), caffeine content of 23463.58 mg / kg and chlorogenic acid of 31769.80 mg. It can be concluded that S.cerevisiae cultured in wet coffee fermentation reduced the caffeine level of Robusta coffee and was a potential culture used for wet coffee fermentation. Keywords: coffee fermentation, fermentation time, Robusta, Saccharomyces cerevisiae
Penentuan Daya Tampung Sungai Mayang Terhadap Beban Pencemaran Menggunakan Persamaan Streeter-Phelps Sri Wahyuningsih; Elida Novita; Kiki Paradiba
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.v10i4.496-503

Abstract

The Mayang River in Jember Regency has a length of approximately 145.50 km which is the longest river and can irrigate an area of 5,860 hectares. The use of the Mayang River by the community can produce waste, both domestic waste, agricultural waste, and livestock waste. Waste that enters directly into river bodies can cause a decrease in river water quality and can create a pollution load. Therefore, the measurement of the load capacity of the Mayang River was conducted. Mayang River water samples were taken using the grab sampling method, while the river's capacity was determined using the Streeter Phelps method. The results showed that the average value of the Mayang River pollution load was 219,483 kg/day. Some of the parameters used to determine the carrying capacity of the river are the daily deoxygenation rate of 0.137 mg/L and the dailyy reaeration rate of 1.097 mg/L. It has a critical point (tc) of 0.186, a critical distance (Xc) of 4.753 km, and a critical deficit (Dc) of 0.281 mg/L. Based on these parameters, it is concluded that the Mayang River can accommodate a pollution load of 1.5 kg/day and can carry out proper purification. Keywords : grab sampling method, Streeter Phelps, the deoxygenation rate, the reaeration rate
Uji Kinerja Alat Penghancur Kohe Kambing Tipe Basah Aldi Saputra; Budianto Lanya; Siti Suharyatun; Agus Haryanto
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.v10i4.440-448

Abstract

Goat manure is one of the manure which is widely used in agriculture. Due to its hard physical nature, goat manure needs to be crushed before being applied to facilitate the decomposition process. Currently, there is a wet type of goat dung grinder or crusher used by the community. This study aims to test the performance of the goat manure crusher based on the engine rotation speed (rpm). The research was conducted using 3 different rotation speed of the blade shaft, namely 968 rpm, 1208 rpm, 1454 rpm. The experiment parameters included working capacity, fuel consumtion, and degree of crushing. The results showed that the wet type goat manure crusher had the best working capacity at 1208 rpm blade rotation with 255,78 kg/h working capacity, 1.43 lt/h fuel consumption, and 99.3% crushing uniformity. Keywords: manure, rpm, wet goat manure crusher
Cover Volume 10 Nomor 4 Desember 2021 Agus Haryanto
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.%p

Abstract

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 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
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
Pengaruh Aplikasi Pupuk Organik dan Pestisida Organik terhadap Produktivitas Terung (Solanum melongena) dan Tingkat Bahaya Erosi Idah Andriyani; Fiona Cahya Patricia
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.v10i4.515-529

Abstract

This study aims to analyze the effects of the use of organic fertilizers and organic pesticides on eggplant productivity and the level of erosion hazards that occur on these intensive agricultural lands. The use of organic fertilizers and pesticides is expected to improve soil quality which in turn will increase crop productivity and reduce erosion yield. Randomized block design (RBD) was used with a combination of dosage treatment of organic fertilizers (P) and organic pesticides (B). The dosages of organic fertilizers used were: 0 kg/bed (P1/control), 1 kg/bed (P2), 1.5 kg/bed (P3) and 2 kg/bed (P4). The doses of pesticides used were chemical pesticides 2 ml/liter (B1/control), organic pesticides 7 ml/liter (B2), 9 ml/liter (B3) and 11 ml/liter (B4). The highest productivity research results were obtained from combination of P4B1 (fertilizer dose 2kg/bed + chemical pesticides). This shows that organic fertilizers and pesticides can increase plant productivity. However, organic pesticides have not been able to reduce pest attacks during the fertilization phase. On the other hand, the rate of erosion has actually increased which is not significantly different between the use of organic fertilizers and chemical fertilizers. This is due to the increase in the content of organic matter and changes in soil texture which cause the soil to become loose and crumb so that it is more easily eroded. Thus the use of organic fertilizers and pesticides can be used continuously in intensive agriculture but must be accompanied by other conservation activities to reduce the erosion yield. In addition, it is necessary to develop more effective organic pesticides to eradicate pests and plant diseases. Keywords: erosion, eggplant plants, intensive agriculture, organic fertilizer, organic pesticide.   

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