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All Journal Jurnal Rekayasa Pangan dan Pertanian Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Jurnal Teknologi Pertanian agriTECH Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Jurnal Teknologi & Industri Hasil Pertanian Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Agricultural Biosystem Engineering

Tamrin, Tamrin

Jurusan Teknik Pertanian, Fakultas Pertanian, Universitas Lampung, Jl. Soemantri Brodjonegoro No. 1, Gedung Meneng, Bandar Lampung 35145

Author-ID : 2870405

Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Medicine & Pharmacology Other

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Modifikasi dan Perbaikan Kinerja Alat Pengiris Mayang Kelapa untuk Menyadap Nira Tamrin Tamrin; Ta'lin Ta'lin
agriTECH Vol 33, No 4 (2013)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Most of coconut palm is found in tropic and subtropic. The palm sap that is taken from coconut palm was still traditional. The operator climb coconut tree, slice the young spadix, then collect palm sap in bamboo tube. It is high risk of accident to climb the coconut palm everyday. This research aimed to modification, assembl and test coconut spadix of slicer that operated it from bottom of coconut tree. The assembling coconut spadix slicer used conceptual design, realization, fabrication and tested in out door. The result of this research were the force sliced spadix was 12-20 kg force. The result of test showed that palm sap produced 0.71-1.41 litre, while the traditional method produced palm sap 0,97 - 2,35 litre. It tapped palm sap was done in 21 day. The sharp knife, knife angle 0, and lever system were three condition to decrease force when slice spadix coconut palm.ABSTRAKTanaman kelapa banyak ditemukan didaerah tropis dan subtropis. Penyadapan nira tanaman kelapa masih dilakukan secara tradisional. Tukang sadap memanjat pohon kelapa, mengiris mayang muda, dan menampung nira dengan wadah dari bambu. Memanjat pohon kelapa tiap hari beresiko akan jatuh dari atas pohon. Penelitian ini bertujuan memodifikasi membuat dan menguji alat mengiris mayang kelapa yang dapat dioperasikan dari bawah pohon kelapa. Pembuatan alat pengiris mayang kelapa melalui proses rancangan konseptual, rancangan perwujudan, pabrikasi and pengujian alat di lapang. Hasil penelitian menunjukkan bahwa beban tarik untuk mengiris mayang sebesar adalah 12-20 kg gaya. nira yang dihasilkan dengan cara mengiris mayang dengan alat adalah 0,73 -1,41 liter. sementara penyadapan nira yang dihasilkan dengan tradisional sebesar 0,97-2,34 liter. Penyadapan dilakukan selama 21 hari. Pisau yang tajam, sudut pisau nol derajat, dan sistem pengungkit merupakan tiga kondisi untuk mengurangi beban tarik saat pengiris mayang kelapa.

Pengembangan Tungku Briket Batubara Skala Rumah Tangga Tamrin Tamrin
agriTECH Vol 30, No 4 (2010)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Improving of a coal briquette stove is required in the context of energy diversification for strengthening national energy security. The policy of kerosene conversion to LPG is a short term policy and needs other source of energy alternative. In idealized sense, all potentials should be used for household cooking, not always depending on a particular energy source. Purpose of this research was to improve a household coal briquette stove to increase stove efficiency and ease in ceasing the ember. Design criteria of the coal briquette stove were based on heat transfer from the burning coal to the heated object, ease in ceasing the ember, and facilitating the exhausting smoke from the kitchen room. Performance test to the designed stove was conducted on analyses of temperature at the bottom of a pan versus time during the firing, heat efficiency, and the time of ceasing ember. The results showed that the cooking temperature (>180 oC) was reached after 35-65 minutes. The cooking temperature lasted for 4 hours, heat efficiency of 25.5 % was about optimum, and the time of ember ceasing was 19-33 minutes.ABSTRAKPengembangan tungku briket batubara sangat diperlukan dalam diversifikasi pemakaian energi bahan bakar agar ketahanan energi nasional menjadi kuat. Kebijakan pengalihan bahan bakar minyak tanah ke elpiji merupakan ke- bijakan jangka pendek dan perlu energi alternatif lainnya Idealnya semua potensi yang ada dapat digunakan untuk memasak, tidak harus bergantung pada energi tertentu. Tujuan penelitian ini adalah untuk mengembangkan tungku briket batubara skala rumah tangga untuk meningkatkan efiseinsi dan memudahkan pematian bara api. Tungku briket batubara dibuat didasarkan pada sistem pindah panas dari bara briket ke objek yang dipanaskan, memudahkan pe- matian bara api briket batubara dan menyalurkan asap dari ruang pembakaran keluar dari ruang dapur. Pengujian dilakukan untuk mengetahui perubahan suhu dasar panci selama pembakaran, untuk mendapatkan efisiensi tungku dan lama waktu mematikan bara api briket. Hasil pengamatan terhadap tungku hasil pengembangan menunjukkan bahwa suhu layak memasak (>180 oC) dicapai selama 35-65 menit, lama suhu layak memasak sekitar 4 jam. Efisiensi maksimum tungku adalah 25,5 % dan lama pematian bara api adalah 19-33 menit.

The Effect of Artificial Repening Used The Calsium Carbida(CaC2) of Physical and Chemical Properties of Ambon Bananas (Musa paradisiaca var. sapientum (L.) Kunt)) Anwar Sadat; Tamrin Tamrin; Cicih Sugianti
Jurnal Rekayasa Pangan dan Pertanian Vol 3, No 4 (2015): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Banana is one of the best horticulture products in Indonesia. All this time, the ripening of banana has been done by the farmers. Artificial ripening was done using carbide with one kind of carbide concentration. The aim of this research was to determine the effect of carbide mass and ripening media on the physical and chemical quality of Ambon banana. The result showed that average of room air temperature between 28.48 °C, the average air temperature of the non vacuum media between 30.15 to 31.1°C, and the average air temperature of vacuum media ranged from 30.56 to 31.66 °C. The average of relative humidity from 74.76%, the average humidity of the non vacuum media between 78.68 to 79.45% and the vacuum media ranged from 79.02 to 80.24%. Respectively Water content of bananas in the non vacuum media ranged from 74.0 to 80.5% and the vacuum media ranged from 75.8 to 77.7%. Vitamin C levels of bananas with non vacuum media ranged from 99.7 to 108.5 mg per 100 g and vacuum media ranged from 17.6 to 32.3 mg per 100 g. The hardness of bananas in the non vacuum media ranged from 2.0 to 2.73 N and vacuum media ranged from 0.5 to 1.7 Newton. The soluble solid content of bananas in the non vacuum media ranged from 19.2 to 22.4 °brix and vacuum media ranged from 10.5 to 11.7 °brix. Keywords: bananas, artificial ripening, calcium carbide.

UJI KINERJA MESIN PENIRIS MINYAK GORENG PADA PENGOLAHAN KERIPIK Hamimi Hamimi; Tamrin Tamrin; Sri Setyani
Jurnal Teknologi & Industri Hasil Pertanian Vol 16, No 1 (2011): Jurnal Teknologi & Industri Hasil Pertanian
Publisher : Teknologi Hasil Pertanian Fakultas Pertanian Universitas Lampung

This study was aimed to test the performance of ‘AGROWINDO’ cooking oil spinner by determining the best spinning rate and spinning duration on several types of chips processed at home-industry scale. The research was conducted in two factors : the spinning rate (rpm) 1: 4 = 400, 1:5 = 450, and 1:6 = 500 rpm, and the duration of spinning time: 40, 60, and 80 seconds; cassava chips, banana chips, and sweet potato chips were used as materials. The treatments were replicated three times. The data of cooking oil drained or removed from the chips and the amount of rejected chips were analyzed descriptively, while the data obtained from organoleptic test of the chips were analyzed using ANOVA, then continued tested using orthogonal polynomials at 1% and 5% levels. The results of this study indicated that: the spinning rate (rpm) and spinning duration had an effect on level of disposal cooking oil and amount of rejected chips. The highest level of cooking oil removed from the chips was found at sweet potato chips with value of 19.5%. This value was obtained through spinning rate of 500 rpm and spinning duration of 80 seconds.

THE DESIGN OF SOLAR DRYING TOOL WITH A FLAT CHIP COLLECTORS Hizami Ch Anwar; Budianto Lanya; Agus Haryanto; Tamrin -
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 1, No 1 (2012)
Publisher : The University of Lampung

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Rack solar drier is one example of useful utilization of solar energy, but has not widely used by the public, yet. Using this solar drier we can dry our fish and agricultural products without fossil fuels. Solar dryer works by absorbing sunlight by four blackened flat collectors, and the heat generated by the collectors was transferred by air flow to the plenum chamber and drying chamber consisting of shelves. The solar dryer used in this experiment has dimension of 4,66 m length by 4,66 m width and by 1,95 m height. The dryer has a capacity of around 50 kg materials that can be dried during 20 hours. Based on our testing it was observed that the decrease in water level was not uniform among the shelves position. The final moisture content was highest in the top shelves, followed by middle shelves and bottom shelves. The average final moisture content was 16,95%. The time required for drying was 20 hours, with an average moisture load of 10,46 kg H2O. The average drying rate was 0,5228 kg H2O/jam or 2,10% wet basis per hour. In this experiment intensity of solar radiation was measured to be 634,88 Watt/m2, and electric power of 12,83 Watt was used to run small fan in order to exhaust moist air. The average energy used (Qe) for drying banana chips was 37124,58 kJ per each drying process and the average energy input used during the drying process (Qrs) was 147.227,87 kJ. This meant that average drying efficiency was 27,07%. Technically, it can be concluded that solar dryer can be used as an alternative to drying agricultural commodities. Keywords: moisture content, banana chip, solar drier, flat collectors, solar intensity.

WASTE COOKING OIL GASIFICATION WITH PRESSURE STOVES Tamrin .
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 2, No 2 (2013)
Publisher : The University of Lampung

Kerosene gasification with pressure stoves have been applied to people such mawar stoves. use of waste cooking oil as fuel for pressure stoves are still in the early stages of research. Waste cooking oil viscosity higher than that of kerosene, this is a problem in the use of the mawar stove, since mawar stove used of oil pipeline smaller than 2.5 mm. The research was carried out by utilizing the mawar stove by using waste cooking oil fuel. The results showed that the flow rate of kerosene from 2.33 to 4.08 ml/s on stove and flow rate of waste cooking oil on the stove from 0.39 to 0.66 ml/s with a pressure stove 6-3 psia. Waste cooking oil can be used as fuel for mawar stoves with pressure more than 4 psia and fire to preheat stove for waste cooking oil is greater than with the use of kerosene fuel. Keywords: Gasification, Kerosene Oil, Waste Cooking Oil, Mawar Stove And Pressure Stove

PHYSIOLOGY CHARACTERISTICS OF MANGOSTEEN (Garcinia Mangostana L.) AT MODIFIED ATMOSPHERE CONDITION Andre Fransiska; Rofandi Hartanto; Budianto Lanya; Tamrin -
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 2, No 1 (2013)
Publisher : The University of Lampung

Mangosteen is a klimateric fruit so it has a short shelf life. Therefore, it is needed to handle carefully after harvesting. Temperature setting combined with modified atmosphere is a type of storage which can decrease the respiration rate of fruit. This research aims at determining the effect of modified gas composition on total dissolved solids, total acid, hardness, respiration rate, and shelf life of mangosteen in the cold temperature and the room temperature storage. The research was carried out at room temperature (29 oC) and cold temperature (10 oC) combined with a gas composition of pure CO2 gas and air from a compressor containing O2 and N2 supplied to the storage bottle with composition of A (5% O2, 5% CO2), B (10% O2, 5% CO2), C (5% O2, 10% CO2), D (10% O2, 10% CO2). Total dissolved solid of mangosteen during storage was decreased, with the lowest total dissolved solids was 16,6 obrix in the cold storage and 16,7 obrix at room temperature storage. Total acid and respiration rate of mangosteen was stable decresed during storage. The hardness of mangosteen during storage increased with the highest value of 3,20 kg.s/mm. Mangosteen optimal shelf life at room temperature (29 oC) was 16 days and at cold temperatures (10 oC) was 20 days with gas composition of 5% O2 and 10% CO2. Modified atmosphere combined with temperature could extend the shelf life of mangosteen and influened the value of total dissolved solids, total acid, respiration rate and hardness. Keywords: Mangosteen, respiration, climateric, shelf life

THE INFLUENCE OF GAS COMPOSITION ON THE RESPIRATION RATE OF BANANA (Var. Janten) ON MODIFIED ATMOSPHERE STORAGE Tito Yasin; Rofandi Hartanto; Agus Haryano; Tamrin .
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 2, No 3 (2013)
Publisher : The University of Lampung

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Respiration rate was generally used as an indicator of the rate of metabolism for agricultural comodities. The research aimed to determine the influence of gas composition to respiration rate and the changes of total acid, sweetness level and hardness level of banana (var. Janten) that was storaged at two different temperatures (room temperature (29 oC) and cold temperature(15 oC)). This research was conducted by modifying the gas composition(O2, CO2, and N2) in the storage jar. The results showed that respiration rate of banana tended to increase with time at both temperatures. Total acid declined steadily at room temperature but fluctuated at cold temperature. Sweetness level showed an increase and the hardness level showed a decrease with time at both temperatures during the storage process. Modified atmosphere was able to extend shelf life of banana to 12 days at room temperature and 26 days at cold temperature. The best gas composition for banana (var. Janten) was 4% O2, 5% CO2, and 91 % N2 (by volume). Keywords:Modified Atmosphere, Gas Composition, Respiration Rate, Total Acid, Sweetness Level, Hardness Level .

PRODUKSI BIOGAS DARI CAMPURAN KOTORAN AYAM, KOTORAN SAPI, DAN RUMPUT GAJAH MINI (Pennisetum Purpureum cv. Mott) DENGAN SISTEM BATCH Yasin Yahya; Tamrin Tamrin; Sugeng Triyono
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 6, No 3 (2017)
Publisher : The University of Lampung

ABSTRAKBiogas merupakan energi alternatif yang dapat dikembangkan untuk menjadi salah satu solusi krisis energi. Biogas merupakan hasil fermentasi anaerob bahan organik menjadi gas metana (CH4). Gas metana (CH4) hasil produksi biogas dapat dijadikan menjadi bahan bakar gas. Penelitian biogas ini memproduksi biogas dari campuran kotoran ayam, kotoran sapi dan rumput gajah mini (pennisetum purpureum cv. Mott) dalam digester volume 2 L dengan sistem batch. Penelitian biogas ini menggunakan empat perlakuan campuran kotoran ayam, kotoran sapi dan rumput gajah yaitu A 0:100:0, B 0:80:20, C 20:60:20, dan D 30:20:50. Penelitian ini bertujuan untuk mengetahui campuran optimum untuk produksi biogas. Hasil penelitian diperoleh nilai optimum rasio C/N untuk produksi biogas yaitu perlakuan A 27,52, B 25,47, dan C 22,23 sedangkan D dibawah optimum yaitu 19,18. Hasil produksi biogas perlakuan A 4916 mL, B 4610 mL, C 3909 mL dan D 2640 mL. Produktivitas biogas perlakuan A 60,71 mL/g VS, B 109,58 mL/g VS, C 134,29 mL/g VS dan D 53,88 mL/g VS. Uji nyala masing-masing perlakuan A dan B menghasilkan api berwarna biru, C api berwarna biru kekuningan dan D tidak dapat menyala. Perlakuan A dan B paling optimum untuk produksi biogas berdasarkan total produksi biogas, rasio C/N dan hasil uji nyala. Kata Kunci: Rumput gajah mini; produksi biogas; rasio C/N; uji nyala

Modification of Rice Thresher-Hammer Thresher Type Ahmad Harbi; Tamrin -; Warji -; Budianto Lanya
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 1, No 1 (2012)
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (671.912 KB)

The thresher rice has developed in previous research is instrument thresher rice type hammer thresher. But the threshing not going well, Where rice stalk is still difficult to get out of the thresher. The objective of this research is to modify machine type paddy thresher hammer . Modification is conducted by adding director channel in upper wall of threshing chamber and to change straw exiting channel near the feeder with size of 15 cm width and 19 cm height. By this method, paddy straw is expected to exit from threshing chamber and threshing process can run smoothly. Methods used is Modification tools, testing modification result, observation and data collection. Observations are made to percentages of threshed paddy grain, percentage of unthreshed paddy grain, good threshed paddy grain, percentage of damaged threshed paddy grain, threshing duration, and working capacity of the machine per hour. Keywords: Thresher rice, thresher rice type hammer, modify machine thresher.

Co-Authors Agus Haryano Agus Haryanto Agus Haryanto Ahmad Harbi Aidil Fitriansyah Alda Monica Febrianty Alvin Restian Andre Fransiska Annie Widya Subagya Anwar Sadat Arif Dwi Santoso Budianto Lanya Cicih Sugianti Cicih Sugianti Denny Sanjaya Irawan Diding Suhandy Dwi Dian Novita Eza Yolan Yuswansyah Fauzan . Febryan K. Wisnu Hamimi Hamimi Hendra Saputra Hizami Ch Anwar JUNARLI JUNARLI Kristri Yoga Made Aditya Putra Mahendra Dwi Setiawan Mareli Telaumbanua Maria Erna Marinda Sari Muhamad Zen Kadir Muhammad Agus Windra Muhammad Amin Muhammad Yasir Arafat Mulia Rahman Nanik Agustina Nesti Kurnia Ningsih Nur Oktavia Ohen Suhendri Oktafri Oktafri Pelita Ningrum Prastyo Agung Hanang Priastuti, Rita Catur Rahmat Ibnu Mas'ud Risya Delfira Cahyani Effendi Rivaldo Rivaldo Rofandi Hartanto Sandi Asmara Sandi Asmara Sapto Kuncoro Siti Suharyatun Sri Rezeky Meylani Sri Setyani Sri Waluyo Suhendar Edi Ta'lin Ta'lin Thareh Kemal Damanta Tharry Yassa Tito Yasin Warji Warji wenceslaus hari kristanto Winda Rahmawati Winda Rahmawati Yasin Yahya Yuanita Kusuma Pratiwi Zelzha Arinnesia Varanita

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