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All Journal J@TI (TEKNIK INDUSTRI) Agrointek Journal of Innovation and Applied Technology Jurnal Teknologi Pertanian JPPM (Jurnal Pengabdian dan Pemberdayaan Masyarakat) Agroteknika Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE)
Isti Purwaningsih
Universitas Brawijaya
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Mechanical Engineering Public Health Social Sciences

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Application of Optimal Preventive Replacement Age Model to Determine Replacement Schedule For Dumping Grate Component on Boiler Machine (Case Study at Rejo Agung Baru Sugar Factory Madiun) Dania, Wike Agustin Prima; Purwaningsih, Isti; Purwaningsih, Isti; Purwaningsih, Isti; Aristiono, Fajar Andy; Aristiono, Fajar Andy; Aristiono, Fajar Andy
Jurnal Teknologi Pertanian Vol 12, No 1 (2011)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (248.478 KB)

Abstract

Rejo Agung Baru Madiun is one of big sugar companies in East Java. One of the problems in this factory is delayed of production process caused by machine damaged. Based on preliminary survey, it showed that boiler machine is regularly damage and has the highest downtime. Moreover, component that influences the damage of boiler machine is dumping grate component. The main purpose of this research is to determine optimal replacement schedule that has minimum downtime and maximum availability of dumping grate component. Method that is used to solve the problem is optimal preventive replacement age model. Furthermore, it also determines and compares replacement cost before and after scheduling. From the result, it shows that the replacement interval for dumping grate is 555 hours or 23.125 days with the minimum downtime value is 0.010018182 and the availability value is 0.989981818. Total cost of optimal replacement scheduling is Rp 3,341,078,529.00. The cost comparison before replacement scheduling and after replacement scheduling is Rp 3,517,399,429.00 and Rp 3,341,078,529.00 respectively or saving about 5.013%. Keywords: dumping grate, minimum downtime, maximum availability, optimal preventive replacement age model
Application of Optimal Preventive Replacement Age Model to Determine Replacement Schedule For Dumping Grate Component on Boiler Machine (Case Study at Rejo Agung Baru Sugar Factory Madiun) Dania, Wike Agustin Prima; Purwaningsih, Isti; Purwaningsih, Isti; Purwaningsih, Isti; Aristiono, Fajar Andy; Aristiono, Fajar Andy; Aristiono, Fajar Andy
Jurnal Teknologi Pertanian Vol 12, No 1 (2011)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (248.478 KB)

Abstract

Rejo Agung Baru Madiun is one of big sugar companies in East Java. One of the problems in this factory is delayed of production process caused by machine damaged. Based on preliminary survey, it showed that boiler machine is regularly damage and has the highest downtime. Moreover, component that influences the damage of boiler machine is dumping grate component. The main purpose of this research is to determine optimal replacement schedule that has minimum downtime and maximum availability of dumping grate component. Method that is used to solve the problem is optimal preventive replacement age model. Furthermore, it also determines and compares replacement cost before and after scheduling. From the result, it shows that the replacement interval for dumping grate is 555 hours or 23.125 days with the minimum downtime value is 0.010018182 and the availability value is 0.989981818. Total cost of optimal replacement scheduling is Rp 3,341,078,529.00. The cost comparison before replacement scheduling and after replacement scheduling is Rp 3,517,399,429.00 and Rp 3,341,078,529.00 respectively or saving about 5.013%. Keywords: dumping grate, minimum downtime, maximum availability, optimal preventive replacement age model
Application of Optimal Preventive Replacement Age Model to Determine Replacement Schedule For Dumping Grate Component on Boiler Machine (Case Study at Rejo Agung Baru Sugar Factory Madiun) Dania, Wike Agustin Prima; Purwaningsih, Isti; Purwaningsih, Isti; Purwaningsih, Isti; Aristiono, Fajar Andy; Aristiono, Fajar Andy; Aristiono, Fajar Andy
Jurnal Teknologi Pertanian Vol 12, No 1 (2011)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (248.478 KB)

Abstract

Rejo Agung Baru Madiun is one of big sugar companies in East Java. One of the problems in this factory is delayed of production process caused by machine damaged. Based on preliminary survey, it showed that boiler machine is regularly damage and has the highest downtime. Moreover, component that influences the damage of boiler machine is dumping grate component. The main purpose of this research is to determine optimal replacement schedule that has minimum downtime and maximum availability of dumping grate component. Method that is used to solve the problem is optimal preventive replacement age model. Furthermore, it also determines and compares replacement cost before and after scheduling. From the result, it shows that the replacement interval for dumping grate is 555 hours or 23.125 days with the minimum downtime value is 0.010018182 and the availability value is 0.989981818. Total cost of optimal replacement scheduling is Rp 3,341,078,529.00. The cost comparison before replacement scheduling and after replacement scheduling is Rp 3,517,399,429.00 and Rp 3,341,078,529.00 respectively or saving about 5.013%. Keywords: dumping grate, minimum downtime, maximum availability, optimal preventive replacement age model
Optimation on Addition of Maize Sprout Extract to Improve the Quality and Taste of Soyghurt Intended for Dietetic Food of Ones with Coronary Heart Disease Sukardi, Sukardi; Patulungan, M. Hindun; Purwaningsih, Isti
Jurnal Teknologi Pertanian Vol 2, No 2 (2001)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (248.396 KB)

Abstract

The aim of the experiment is to determine the optimal level of addition of maize sprout extract to improve the nutritional and the sensory characteristics of soyghurt intended for dietetic food of ones with coronary heart diseases. The experiment is carried out in a completely randomized design.  Six levels of maize sprout extract i.e. 0 %, 10 %, 20 %, 30 %, 40 % and 50 % respectively, were added to soymilk.  Parameters observed include fat, protein, N-amino content, protein quality (Protein Score and % Net Dietary Protein Efficiency), and the sensory characteristic, viscosity, taste, aroma and color of the soyghurt produced. The result showed  that an addition of maize sprout extract at a level of 30 % to soymilk is found to be an optimum one to produce good quality soyghurt.  It will reduce the fat content from 1.43 % to 0.82 %, but increase the level of unsaturated fatty acid of the soyghurt.  It also result in the reduction of the protein of the formula from 5.67 % to 4.44 % and increase of  N-amino from 1120 ppm to 1290 ppm.  The improved formula soyghurt contains 0.82 % fat, 4.44 % protein, 1290 ppm N-amino, 51.98 Protein Score and Net Dietary Protein Efficiency of 7.25 %, and it is still considered to be acceptable in terms of viscosity, taste, aroma and color.   Keywords: soyghurt, maize sprout, dietetic food
Penyusunan Stratigi Pengembangan Industri Penyamakan Kulit di yogyakarta Purwaningsih, Isti
Jurnal Teknologi Pertanian Vol 4, No 3 (2003)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

This research was focused on development of strategic formation for tennage manufacture in Yogyakarta. Based on Primary and secondary data, factors of strength, weakness, opportunity, and threat were determined. From these factors, strategy matrices was arranged which gave four alternative strategy. They are SO strategy (strength-opportunity), WO strategy (weakness-opportunity), ST strategy (strength-threat), and WT strategy (weakness-threat). To obtain strategy priority, assessment using AHP method (Analytical Hierarchy Process) was carried out. From assessment using AHP method showed that Production and Technology Development strategy was the first priority. The second and third priority was Increasing Quality and Quantity of Raw Material, and Human Resources Development. Market Development and Supporting industry Development were the fourth and fifth priority in tennage industries development.  Each group of strategy consists of several development alternative strategies.   Keyword: development strategic, tennage manufacture, SWOT analysis, and AHP method
Tempeh Inoculum Application Test of Rhizopus oryzae with Rice and Cassava Flour as Substrate at Sanan Tempeh Industries – Kodya Malang Sukardi, Sukardi; Wignyanto, Wignyanto; Purwaningsih, Isti
Jurnal Teknologi Pertanian Vol 9, No 3 (2008)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

This research was designed to obtain high quality dried tempeh inoculum (powder) and to know the best level of inoculum for small medium industrial scale.  Also it was designed to know the preference of consumers.  Experimental design employed in this research was completely randomized design comprosed of one factor i.e. the level of R. oryzae concentration consisted of 0.9% w/w; 0.7% w/w; 0.5% w/w; 0.3% w/w; and 0.1% w/w.  The initial R. oryzae spore of the starter was 1,3x107 cfu/g.  The best treatment was determided by multiple atribute method.  The application test of the best inoculum was done at 3 tempeh small industries and the produced tempeh was analyzed by sensory test.The best level of R. oryzae pure culture addition was 0.5% based on substrate weight, and the total microbial of dried inoculum was 8.02 x 107 cfu/g (7.90 log cfu/g) with the percentage of viable mold after I month was 89,52%.  The total number of mold after mixing with rice flour was 3.04 x 107 cfu/g (6.893 log cfu/g), the percentage of viable mold was 90.92%, and the percentage of contaminating bacterium was 41.75%.  The end piece of cassava could be used as substrate for tempeh inoculum production from pure culture of R. oryzae and it had yield of 41.70% and moisture content of 6.57%.   The best addition of R. oryzae inoculum in producing tempeh was 0.15%, and the consumers preference of texture was 8,07 (like very much), the appearance was 7,67 (like), color  was 7.47 (like), the aroma was 7.47 (like), and taste was 8 (like very much).Keywords: tempeh inoculum, pure culture, dried inoculum, tempeh industries
Industrial Cluster Learning Purwaningsih, Isti
Jurnal Teknologi Pertanian Vol 4, No 3 (2003)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Globalization impact and economics crisis in Indonesia has been  changed Indonesiaeconomics structure. Many manufacture industries have been shut down, especially which issupported by imported raw material. This is certainly a very clear proof that our industrialfoundation is not rigid. Goverment has changed industrial development strategy into  industrialcluster approach to survive this crisis. There are 3 model to analyze industrial cluster, i.e. CollectiveEfficiency,  Flexible Specialization, and Porter Diamond Model.  This research was focused on studying industrial cluster, with case study on tennagemanufacture in Yogyakarta, based on Porter Diamond Model. Porter Diamond Model consist of four determinant, i.e. (1) factor conditions, (2) demand condition, (3) firm strategy, structure, andrivalry, and (4) related and supporting industry.
Disain Sistem Basis Data Usaha Kecil dan Menengah (UKM) Agroindustri (Studi Kasus Pada UKM Tempe) Mulyarto, Aunur R.; Purwaningsih, Isti
Jurnal Teknologi Pertanian Vol 5, No 3 (2004)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

The objective of this research is to set up data base system of SME, particularly for tempe agroindustry with emphasizing on conceptual and logical design.  Primary data was collected via deep interview and secondary data from any documents that related to the study research design includes identification and need analysis, conseptual design (build the Entity-Relationship model) and logical design (build the Relational Data Model) Base on the identification and need analysis, there were seven associated actors i.e. SME, cooperation, finance institutions, raw-material supplier, product supplier, local government and consument.  Conceptual model was built using Entity-Relationship Diagram.  There was seven entity sets and seven relation sets with one-to-many cardinality for the whole relationships.  Transformation from Entity-Relationship Model to Relational Data Model produced 14 tables, include:  Perajin, Koperasi, Penyalur, LembKeu, Modal, Produk, BahanBaku, Menjual, Menyalurkan, Menggunakan, Meminjam, Menyediakan, Menghasilkan, and MenjadiAnggota.  Each table had attributes completed with data type and data domain.   Key words : Database, Agroindustry, Conceptual Model, Small and Medium Enterprise
Cane-Scale Queuing System Modelling at PG Pandjie Situbondo Purwaningsih, Isti; Effendi, Usman; Rizqi, Muhammad
Jurnal Teknologi Pertanian Vol 11, No 1 (2010)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Research was aimed to develop the cane-scale queuing system at PG Pandjie, Situbondo, and to find good solution to fix the waiting line problem.  Based on this research the queuing model that used in cane scale is (M/M/1):( FIFO/∞/∞) with arrival rate (λ) 84 truck/hour, service rate (µ) 39 truck/hour, and average waiting time in the system is 7 hours and 3 minutes. To improve this system performance, there are 3 alternative, first alternative is to decrease the service time.  Therefore, the service rate will increase to 45 trucks per hour. This alternative will decrease average waiting time in the system to 5 hours 45 minutes. Second alternative is to add a service facility. This alternative will decrease average waiting time to 47 minutes. Third alternative is combining the first alternative and second alternative. Average waiting time in the system decreases until 11 minutes if this alternative is implemented. Based on utility factor and probability, costumer must wait.  The best alternative to solve the waiting line problem in cane scale station is third alternative.  This is due to this alternative has utility factor that equal than 1 and the probability for costumer to wait is smaller than the other alternative.Keywords: cane-scale station queuing system, modelling, utility factor
Implementation of Mechanical Processing Machines in Traditional Medicines (Jamu) Production Isti Purwaningsih; Usman Effendi
Journal of Innovation and Applied Technology Vol 1, No 1 (2015)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (637.629 KB) | DOI: 10.21776/ub.jiat.2015.001.01.4

Abstract

ABSTRACT The objective of this activity is to implement the washing machine for rhizome and hydraulic press machine to improve the performance and efficiency of jamu production process. There are several activities such as: (1) surveying at small medium entrerprises of traditional medicine in Batu, “Ragil” and “Bu Roes” and doing preliminary evaluation, (2) designing and assembling washing machine and hydraulic press machine, (3) training, (4) implementing machine in SMEs partner, then (5) monitoring and evaluation.  The result of this activity showed that washing machine performance had average input capacity of 5 kg/process/5 minutes with 95% efficiency. Hydraulic press had average input capacity of 10 kg/process/ 5 minutes. The benefits of both machines implementation were time and power saving, and increasing production hygiene and efficiency. Keywords: Traditional medicine, washing machine, hydraulic press machine
Co-Authors Andan Linggar Rucitra Andan Linggar Rucitra Aunur Rofiq Mulyarto E.F. Sri Maryani Santoso Fajar Andy Aristiono Hilal, Abiyyu Yazid Keane Listyadji M. Hindun Patulungan Maimunah Hindun Pulungan Muhammad Rizqi Panji Deoranto Rizky Luthfian Ramadhan Silalahi, Rizky Luthfian Ramadhan Rofika, Citra Siti Asmaul Mustaniroh Sukardi Sukardi Sukardi Sukardi Usman Effendi Wignyanto Wignyanto Wike Agustin Prima Dania