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Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)
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Articles 199 Documents
Uji Kinerja Unit Mesin Pasteurisasi Tipe Kontinyu untuk Pengolahan Sari Buah Sirsak Suparlan, Suparlan; Budiharti, Uning; Unadi, Astu
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 1 (2019)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v8i1.10-19

Abstract

Soursop fruit is one of the horticultural products that are easily damaged after the maturation process. This fruit is generally consumed in the form of fresh ripe or juice. The quality of the fruit is also very diverse and at harvest time the amount is abundant so the selling price tend to be low. One alternative to increase the added value of soursop fruit which the quality is poor and to extend the shelf life can be done through processing into juice. This study aims to test the performance of continuous type pasteurizer unit which has been developed by the Indonesian Center for Agricultural Engineering research and Development (ICAERD) in the processing of soursop juice on a small scale industry. The pasteurizer unit consists of a mixer, pasturizer, holder, filler, and cup sealer. The process of soursop juice processing includes fruit bunching, skin peeling, burial, mixing and dilution of slurry, fruit juice pasturization, and packaging. The pasteurization process was done at 80 ºC for 5-10 minutes. The pasteurization temperature is achieved at pavor pressure on water heating tube of about 1.0-1,5 bar. Under these conditions the capacity of continuous type pasteurizer unit was 160 l/h. The resulting juice has a TPC content on days 0, 7, and 14 after storage was 4.8 x 102, 5.1 x 102, and 1.9 x 103 cfu/g, respectively. The heavy metal content of Cu and Pb were 0.63 and 0.29 ppm, respectively.Keywords: performance test, pasteurizer, continuous type, soursop juice processing, value added product.
OPTIMALISASI PENGELOLAAN USAHA LABORATORIUM LAPANG TERPADU FAKULTAS PERTANIAN UNIVERSITAS LAMPUNG MENGGUNAKAN METODE LINEAR PROGRAMMING Ratnaningsih, Wahyu; Asmara, Sandi; Rahmawati, Winda; Haryanto, Agus; Novita, Dwi Dian
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 7, No 1 (2018): April
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v7i1.25-34

Abstract

ABSTRAKLaboratorium lapang terpadu (Lab. LT.) merupakan salah satu laboratorium yang terdapat di Fakultas Pertanian Universitas Lampung.  Memiliki luas 67.000 m², yang terbagi menjadi 5 bagian utama yaitu lahan usaha, lahan penelitian dan praktikum, lahan ternak, kolam ikan, dan lahan tidak terpakai.  Penelitian ini menggunakan model linear programming berdasarkan metode simpleks dengan bantuan software QM For Windows.  Tujuan dari penelitian ini yaitu merumuskan formulasi matematika model linear programming dan menghitung nilai keuntungan optimal bagi pengelolaan Lab. LT.  Hasil penelitian menunjukan bahwa nilai keuntungan data asumsi lebih besar dari data asli berdasarkan kondisi Lab. LT.  Keuntungan yang diperoleh setiap tiga bulannya jika nilai Zmax (x2) sama dengan nol yaitu Rp.22.200.370, dengan ketentuan luas lahan usaha ditambah 0,52% dari luas sebelumnya dan untuk kolam ikan ditambah 2,22% dari luas sebelumnya.  Sedangkan berdasarkan nilai asumsi keuntungan yang akan diperoleh setiap tiga bulannya yaitu Rp.34.810.000, dengan ketentuan luas lahan penelitian dan praktikum ditambah 1% dari luas lahan sebelumnya dan untuk kolam ikan ditambah 2,33% dari luas kolam yang digunakan sebelumnya.  Selisih keuntungan yang diperoleh dari data asli dan data asumsi yaitu sebesar Rp. 14.821.850 setiap 3 bulannya.__________________________________________________________________Kata kunci: Optimalisasi, riset operasional, linear programming, metode simpleks, QM for windows.
THE POTENTIAL OF COMMUNITY ACCEPTANCE ON UB-03 BIOMASS STOVE Yuswansyah, Eza Yolan; Haryanto, Agus; Lanya, Budianto; ., Tamrin
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 2, No 2 (2013)
Publisher : The University of Lampung

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Abstract

UB-03 stove is a modern and efficient stove fueled by solid biomass, like pieces of branches, corn stalks, pieces of scrap wood, palm shells, and trash briquettes.. The objective of this study was to determine the potential of community acceptance on UB-03’s biomass stove.  The research was conducted from February 2013 to March 2013 in  namely Way Halom village, Sub-district of Gunung Alip, District of Tanggamus and Sidosari village, Sub-district of Natar, District of South Lampung. The methods used in this study include direct interview, demonstration of using UB-03 stove, and questionnaires. Data collected together with stove appearance (model, performance, price) was used to analyze the influence of education level and income rate to community acceptance towards UB-03 stove. The results showed that people in Sidosari and Gisting (80% of respondents) potentially receive and willing to use the UB-03 stove.  In both villages, education level and income rate affected people willingness towards UB-03 stove.  Respondents with education level from elementary to high school were highly interested (80%) towards UB-03 stove. People having diploma degree and above, however, were less interested to the stove.  Communities with income rates between Rp.500.000, - up to Rp.2.000.000,- showed high willingness in using the stove. In Sidosari, people with income over Rp.2.000.000,- showed less interested.  Stove’s price that could be accepted in the two villages were in the range of Rp.35.000,- to Rp.75.000,-.Keywords: UB-03 Stove, willingness, appearance, price and form
PENGARUH PENAMBAHAN AROMA VANILI TERHADAP KARAKTERISTIK BERAS ANALOG BERBAHAN BAKU TEPUNG UBI KAYU YANG DIPERKAYA DENGAN PROTEIN IKAN LELE JUNARLI, JUNARLI; Tamrin, Tamrin; Suharyatun, Siti
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 6, No 3 (2017)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v6i3.181-188

Abstract

Konsumsi beras di Indonesia sangat tinggi karena beras merupakan  sumber karbohidrat utama dalam pola makan sebagian besar masyarakat Indonesia. Akibatnya ketergantungan terhadap produksi beras sangat tinggi. Tingkat ketergantungan masyarakat terhadap satu sumber karbohidrat saja perlu dikurangi karena akan berdampak terhadap ketahanan  pangan.  Salah satu pendekatan untuk mengurangi tingkat ketergantungan terhadap beras adalah melalui diversifikasi pangan, yaitu dengan pembuatan beras analog.  Penelitian ini bertujuan mempelajari pengaruh penambahan vanili pada beras analog berbahan baku tepung ubi kayu yang diperkaya dengan protein ikan lele terhadap aroma yang dihasilkan.  Bahan dan alat utama yang digunakan adalah tepung ubi kayu, ikan lele dan vanili bubuk.  Penelitian ini menggunakan rancangan Faktorial.  Faktor pertama adalah penambahan tepung ikan lele  (5%, 7,5%, dan 10%) dan faktor kedua penambahan konsentrasi aroma vanili  (5 g, 7 g dan 10 g) dengan 2 kali ulangan. Parameter yang diukur : densitas, daya serap, kekerasan, kadar air, warna, dan uji sensorik.  Hasil penelitian menunjukkan bahwa beras analog yang dihasilkan memiliki karakteristik densitas berkisar 0,63 % - 0,71 %, daya serap 85,2 % - 107,4 %, kekerasan 7,01 – 9,19, dan kadar air 7,10 % - 11,52 %. Penambahan aroma vanili tidak berpengaruh terhadap karakteristik beras analog. Beras analog yang paling disukai panelis adalah beras dengan penambahan tepung ikan lele 5% dan vanili 10 gr/kg.Kata Kunci : Tepung ubi kayu; tepung ikan lele; dan aroma vanili.
KAJIAN PENURUNAN MUTU DAN UMUR SIMPAN JAMUR TIRAM PUTIH (Pleurotus ostreatus) SEGAR DALAM KEMASAN PLASTIK POLYPROPYLENE PADA SUHU RUANG DAN SUHU RENDAH Cahya, Mutiara; Hartanto, Rofandi; Novita, Dwi Dian
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 3, No 1 (2014)
Publisher : The University of Lampung

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Abstract

Oyster mushroom is one of commodites that has prospect to be developed in Indonesia. In case of fresh oyster mushrooms usually have a short shelf life due to high moisture content and are still experiencing respiratory process, so as to speed up the process of deterioration. Packaging with polypropylene plastic packaging is one method of storage to maintain freshness and shelf life of oyster mushroom. The purpose of this study is to examine and determine the rate of decline in the quality and shelf life of fresh white oyster mushrooms in plastic packaging polypropylene at room temperature and low temperature during storage.This research was conducted in two phases, namely the measurement of respiration rate experiments and storage of fresh oyster mushrooms in plastic containers in different volumes at room temperature and low temperature. Parameters observation in this study that changes in weight, projected area is reduced crown circumference, discoloration, water content, respiration rate and shelf life.The results showed that the oyster mushroom storage in polypropylene plastic packaging can maintain the rate of decline in the quality and shelf life of fresh white oyster mushrooms either at room temperature or low temperature. Water content and the highest weight changes during storage in plastic containers at room temperature are both on day 3 and 7 at low temperature that is equal to 92.81%, 150.52 g, 91.76%, and 130.79 g . Control oyster mushrooms at room temperature and low temperature had the highest respiration rates at the 24th and 48th in the amount of 230.48 and 239.53 mg. CO2/kg.hour. Oyster mushrooms in packaging stored at room temperature (31˚C) can last up to 5 days and 14 days at low temperature (9˚C). Keywords: Oyster Mushrooms, polypropylene plastic, storage temperature, packaging, respiration rate
Influence Of Media Storage Sand And Plastic Seeds With The Provision Of Cooling Water To Over Change In Quality Of Kepok Banana (Musa Normalis L) Ikhsan, Artamy Maulia
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 3, No 2 (2014)
Publisher : The University of Lampung

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Abstract

Banana is a climacteric fruit is fruit that will perpetuate the process of maturity even though it has been harvested and is followed by the process of damage due to perpetuate fruit respiration and metabolic processes. The process of respiration in the fruit will result in rapid fruit mature and over-mature. This is an obstacle in maintaining the shelf life of a banana. This Study aims to determine the effect of storage media of sand and plastic seeds to changes in the quality of banana fruit. Storage media used in this study were sand and plastic seeds. While the banana varieties used in this study is kepok banana (Musa Normalis L). In this study each of the bunches of banana inserted into the aluminum tube that has been filled with a store media and cooling water on the outside of the storage media with high cooling water height of 10 cm from the media store. The results showed that colour of kepok banana changed from the begining until the end of storage.  Weight of kepok banana decreased by 12,45% and levels of violence decreased by 2,95 kg.s/mm on last day of storage.  In addition, the level sweetness of kepok banana increased to 23,0ºbrix and level of fruit water to 77,8% on last day of storage. Kepok banana stored in the sand has a longer shelf life (17 days) than the bananas that are stored in the storage media of plastic seeds (14 days) and control (10 days). Keywords: Storage, kepok banana, store media of sand, store media of plastic seeds, and cooling water.
DESIGN OF AUTOMATIC DRIP IRRIGATION BASED ON CHANGE OF SOIL WATER CONTENT USING ARDUINO NANO MICROCONTROLLER Pranata, Rendy
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 1 (2015)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v4i1.%p

Abstract

Formerly, most of Indonesian farmers only used a timer in an effort to set up drip irrigation scheduling. Thismethod is less effective in providing irrigation according to crop water requirement because it is only able toarrange the provision of irrigation basedon a predetermined time interval only, so that the excess or lack ofwatercan’t be controlled. This research makes an instrument which is able to overcome these problems, that is bydesigning an automatic control systemonregulating the provision of irrigationwater in drip irrigation by usingamicrocontroller thatworks based onchange of soilwater content. The parameters observed inthis studyare thechange of soilwater content, irrigationflowrate, bulk density of soil, and dropper flowuniformity. This study usesthree types of growingmedium, i.e. sand, red-yellowpodzolic soil, andmix soil with organic nitrofosfat fertilizer.Calibration tests showed a linear function, for sandmedium y = – 0.23x + 46.96 with percent error ± 5.22%, forred-yellowpodzolic soil andmix soilwith organic nitrofosfat fertilizermediumy = – 0.71x + 104.07with percenterror ± 2.92%. The results showed that the automatic control system is able to work well, i.e. turn on the pumpwhen soilwater content drops belowthe criticalwater contentand turnoff the pumpwhen soilwater content risesover the field capacity.
THE INFLUENCES OF AVAILABLE SOIL WATER DEPLETION FRACTION TO GROWTHS AND YIELDS OF THREE SOYBEAN (Glycine Max (L) Merril) VARIETIES Komang, Ardiyasa
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 3 (2015)
Publisher : The University of Lampung

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Abstract

The objective of this research was to find out the influences of available soil water depletion fraction to growthsand yields of three soybean varieties. This research used a factorial design in a completely randomized designwith the first factor was the available soilwater depletion fraction (p), which contained of three treatment levelsof (p); they were p1 (p=0.2 AW), p2 (p=0.4 AW), and p3 (p= 0.6 AW). The second factor was soybean varietiescontaining of three varieties; V1 = Willis, V2 = Kaba, and V3 = Tanggamus, which were repeated three times.Irrigationwas conducted when soil water levels was close to or above threshold of available soilwater depletionwhichwas determined bymeasuringwater level at gypsumblock and ohmmeter device. Irrigationwas conductedby returning water level to field capacity condition. Treatment of available soil water depletion fraction for theplants influences soybean in growth phase ofWilis (V1) variety, Kaba (V2) variety and Tanggamus (V3) variety.Observation data frominweek 8 of three showed that the highest stemgrowthwas in Kaba variety (55.87 cm) atp2 treatment (p=0.4 AW). The highest leave amountwas Kaba variety (66.93 leaves) at treatmentp2 (p=0.4 AW).The highest production was in Kaba variety (71.33gr) at treatment p2 (p=0.4 AW). The highest irrigationnecessitywas in treatment p2with 18mm water irrigation, and then followed by p3with 13.5mm and finally p1with 9mm. The lowirrigationwater necessity was influenced by high rainfall level of 578mmwith 32 rainy daysduring research.Keywords: soybeans,available soilwaterdepletion fraction, gypsumblock
THE EFFECT OF FLUORESCENT LAMP DISTANCE ON PLANT GROWTH KAILAN (Brassica oleraceae) WITH WICK SYSTEM HYDROPONIC IN THE ROOM (Indoor) Susilowati, Eka
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 4 (2015): Special Edition
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v4i4.%p

Abstract

Fluorescent light is one kind of lamp that can be used in hydroponics systems in the room (indoor).  The distance of lights placement to the plant needs to be precisely determined to obtain optimal plant growth.  The objectives of this study was to determine the effect of fluorescent lamp distance on plant growth of kailan (Brassica oleraceae) with wick system hydroponics in the room (indoor).  Research used a randomized complete block (RCB).  There were five treatments such as one treatment used sun exposure (N0), and four artificial lights each using a 5x36 watt fluorescent bulb.  Four artificial lights treatment were done indoors using different distances between the light to the surface of the planting media.  The 4 treatments were 20 cm (N1), 40 cm (N2), 60 cm (N3), and 80 cm (N4).  Each treatment consisted of 4 plants totaling 20 plant samples. Plants treated in the room were placed in compartments or growth chambers with the dimension of 60 cm x 60 cm x 110 cm.  While plants treated out the room were placed in a greenhouse.  Data of plants production was analyzed using analysis of variance, followed LSDcomparision with á = 0,05.  The result showed that distance treatment of 20 cm from the bulb to the surface of planting media (N1) was the best among the other artificial lighting treatment based on all parameters observed such as number of leaves, plant height, leaf area, leaf area index, biomass weight with upper part and lower part.  However, it was still less optimal as compared to the treatmen of sun exposure (N0).Keywords: fluorescent lamps, kailan, indoor hydroponics, wick system hydroponics
PRODUKSI BIOGAS DARI UMBI SINGKONG DENGAN KOTORAN SAPI SEBAGAI STARTER Hasiholan, Ucok; Haryanto, Agus; Prabawa, Sigit
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 5, No 2 (2016)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v5i2.%p

Abstract

Biogas technology is easy to be implemented and has a lot of raw materials available in various forms such aslivestock waste, agricultural waste, industrial waste and the like which has high organic matter. This study aimedto determine the biogas production, biogas yield, hydraulic retention time, and the quality of biogas made fromcassava and cassava leaves with cow dung as a starter. The experiments were performed using a completelyrandomized design (CRD) with four treatments and four repetitions. Substrate composition of cassava leaves,cassava tubers, and cow dung is A (15: 0: 85), B (0:15:85), C (0:25:75), and D (0:35:65). Variance analysisperformed using SAS statistical program. The results showed that the composition of the substrate significantlyaffect the total production of biogas, but did not significantly affect the productivity of biogas. The highestproduction of biogas obtained from C treatment amounting to 6,995 ml. The average yield of biogas is 130.85mL/g TVS. Biogas produced from treatment C and D burn easily and leave a blue flame indicates adequate contentof CH4 in biogas as a fuel.Keywords:biogas, cassava, cowdung,yield

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