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Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)
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Articles 354 Documents
Uji Kinerja Unit Mesin Pasteurisasi Tipe Kontinyu untuk Pengolahan Sari Buah Sirsak Suparlan Suparlan; Uning Budiharti; Astu Unadi
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 1 (2019): MARET
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.
Kajian Karakteristik Proses Pengomposan Limbah Tanaman Jagung yang Diberi Tambahan Kipahit dan Pupuk Kandang Sapi Sophia Dwiratna; Edy Suryadi; Dwi Rustam Kendarto; Kharistya Amaru; Wahyu Kristian Sugandi; Nur Ilham Tri Hartono
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.v10i4.432-439

Abstract

Corn waste, tithonia and cattle manure are three materials that have different characteristics. These charactersitics differences if used together in the composting process will  complement each other and potentially produce good compost. This research was conducted to find out how the composting process characteristics by utilizing the three raw materials with different characteristics in a composting process. The composting process was carried out using a berkeley method which was stacked with a layered bioreactor. The decomposition process that occurs involving decompisted bacteria, so the composting process runs aerobically. Aerobic composting  corn waste with the addition of tithonia and cattle manure finished in about 4-5 weeks to become a mature compost. The quality of the compost produced is quite good because the content contained in compost fulfills most of the quality standards regulated in SNI 7763: 2018. The addition of tithonia and cattle manure has a positive impact in the process of composting corn plants in terms of duration and good compost. Key words : aerobic, cattle manure, composting, corn waste, tithonia
OPTIMALISASI PENGELOLAAN USAHA LABORATORIUM LAPANG TERPADU FAKULTAS PERTANIAN UNIVERSITAS LAMPUNG MENGGUNAKAN METODE LINEAR PROGRAMMING Wahyu Ratnaningsih; Sandi Asmara; Winda Rahmawati; Agus Haryanto; Dwi Dian Novita
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 | Full PDF (362.288 KB) | 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 Eza Yolan Yuswansyah; Agus Haryanto; Budianto Lanya; Tamrin .
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 2, No 2 (2013)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (250.481 KB)

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; Siti Suharyatun
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 | Full PDF (313.691 KB) | 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.
PERAKITAN PUPUK ALTERNATIF UNTUK BUDIDAYA SAWI PAKCOY (Brassica rapa subsp. Chinensis) DENGAN SISTEM HIDROPONIK RAKIT APUNG Aditia Widya Tama; Suprihati Suprihati
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.v9i3.163-170

Abstract

Pupuk alternatif dapat menjadi solusi untuk budidaya tanaman pakcoy hidroponik tanpa harus menggunakan pupuk Komersial.  Penelitian ini bertujuan untuk menentukan pupuk alternatif yang dapat menghasilkan pertumbuhan dan hasil yang setara dengan pupuk Komersial atau Standart. Penelitian ini dilaksanakan di Kebun Percobaan Kartini, Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana, pada bulan Desember 2019-Februari 2020. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok (RAK), dengan 5 perlakuan (pupuk Standar, pupuk Komersial, pupuk Mas’ud, pupuk Hermawan revisi, dan pupuk Tama). Setiap perlakuan diulang 5 kali. Parameter pengamatan meliputi tinggi tanaman, jumlah daun, bobot segar tajuk, diameter bonggol, dan luas daun. Hasil pengamatan dianalisis dengan menggunakan sidik ragam (uji F 5%), sedangkan Duncan Multiple Range Test dengan selang kepercayaan 95% digunakan untuk uji lanjutnya.  Hasil penelitian menunjukkan bahwa perlakuan pupuk Komersial memberikan hasil bobot segar seberat 265,11gram pertanaman yang tidak berbeda nyata dengan pupuk Mas’ud yaitu 209,52 gram. Sedangkan pupuk Tama berbeda nyata dengan pupuk Komersial dan Mas’ud, tetapi dapat digunakan untuk pupuk alternatif dengan hasil 153,87 gram per tanaman. Kata kunci: hasil, hidroponik, pakcoy, pertumbuhan, pupuk
KAJIAN PENURUNAN MUTU DAN UMUR SIMPAN JAMUR TIRAM PUTIH (Pleurotus ostreatus) SEGAR DALAM KEMASAN PLASTIK POLYPROPYLENE PADA SUHU RUANG DAN SUHU RENDAH Mutiara Cahya; Rofandi Hartanto; Dwi Dian Novita
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) Artamy Maulia Ikhsan
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 3, No 2 (2014)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (330.558 KB)

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 Rendy Pranata
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 | Full PDF (804.899 KB) | 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 Ardiyasa Komang
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 4, No 3 (2015)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (472.761 KB)

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

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