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Sulastri Panggabean
Program Studi Keteknikan Pertanian Fakultas Pertanian Universitas Sumatera Utara
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Preharvest Technology of information systems in Deli Serdang Elfani Oktianto; Saipul Bahri Daulay; Sulastri Panggabean
Jurnal Rekayasa Pangan dan Pertanian Vol 2, No 3 (2014): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

Preharvest Technology of Information systems in Deli Serdang regency was done manually, resulting in ineffective and inefficient information storage and processing systems. More than that, the information seekers-and decision-makers also have difficult in obtaining the data they need. Therefore it is necessary for  futher develope the information system. Web-based information system is considered to be a solution in order to acces information faster, systematic cally and easy to use. For that a designed based on information system in the management of Preharvest Technology in Deli Serdang regency was developed. Preharvest Technology Information System was designed using PHP programming language, MySQL database and the system development Lifecycle (SDLC) method. Keywords : Information Systems, Pre-harvest Technology, Web
Test of Flat Burr Mill Grinder On The commodity of Rice, White Sticky Rice and Black Sticky Rice Endra Rahmadan; S Bahri Daulay; Sulastri Panggabean
Jurnal Rekayasa Pangan dan Pertanian Vol 2, No 3 (2014): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

Changing the form of rice, white sticky rice and black sticky rice into flour is one way to increase the sale value or economic value of the material, in which rice flour, white sticky rice flour and black sticky rice flour are widely used as a raw material in the manufacture of foodstuffs. This study was a test of flat burr mill grinder on the commodity of rice, white sticky rice and black sticky rice. The study was conducted with literature study, experiment, observation and testing of equipment and experiment using a non-factorial completely randomized design (CRD). Parameters measured were the effective capacity of the equipment, the percentage of lost material and moisture content. The results showed that the effective capacity on rice was 11.29 kg/hour, white sticky rice was 11.81 kg/hr and black sticky rice was 12.29 kg/hour. The percentage of material lost was 0.50% for rice, 0.72% for white sticky rice and 0.45% for black sticky rice. The water content of rice before milled was 14.4%, 14.4% white sticky rice and black sticky rice by 13.8%. The water content of rice after milling was 14.2%, 13.8% for white sticky rice, and black sticky rice was 13.3%. Keywords: flat burr mill, grinder, rice, white sticky rice, black sticky rice
Drip Irrigation Performance Assessment In Latosol Soil Caisim (Brassica juncea L.) Cultivation Hotlin Dermawati Apriani; Sumono Sumono; Sulastri Panggabean
Jurnal Rekayasa Pangan dan Pertanian Vol 3, No 1 (2015): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

Drip irrigation is needed in the efficient use of water for the plant and also attention is needed for its performance. The study was aimed to determine the performance of drip irrigation on Latosol soil with and without Caisim plants (Brassica juncea L.). Parameters measured were soil physical properties, evapotranspiration, field capacity, emission uniformity, drip irrigation efficiency, and Caisim (Brassica juncea L.) dry weight.  The results showed that Latosol soil had clayey loam texture with a bulk density value of 1,05 g/cm3, particle density of 2,5 g/cm, porosity of 58,07% and a water content of 36,67% field capacity, evapotranspiration in the early phase was  1,11 mm/day, in the middle phase was 1,91 mm/day, and in the final phase was 1,18 mm/day, the average emission uniformity was 91,86%, the efficiency of use of irrigation in the final phase of plant growth was 100% on the ground with or without plants. Irrigation storage efficiency value at the end of the growth phase on soil with plants was 49,28% and was 15,42% on soil without plants, Caisim had an average dry weight of 1,65 grams and a water content of 87,66%. Keywords: caisim, drip  irrigation, efficiency, latosol soil, performance
Identification of Passion fruit Maturity with Image Processing Using Artificial Neural Network Doli Garesya Agian; Lukman Adlin Harahap; Sulastri Panggabean
Jurnal Rekayasa Pangan dan Pertanian Vol 3, No 3 (2015): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

Identification of passion fruit maturity is still done manually by the farmers . Fruit was seen visually and responded by the brain to differentiate maturity levels . In large amounts it would be difficult to maintain their performance. This study was a non-conventional method of measurement that used digital image processing to produce data that would be processed by  artificial neural network and then processed using computer software that could be used to determine passion fruit maturity level. Passion fruit was identified based on the histrogram input image color ( RGB ) that was obtained from the results of the capture program built using Visual Basic. Some sample of the passion fruit learning pattern data had different weight values ​​as input to the neural network using backpropagation method to distinguish raw, ripe and half ripe fruits. This identification system was capable to identify the entire category of fruit which was 94,4 % correct identification. From the identification results that had been done, the identification of the three outputs were 100 % ripe, half ripe  83,3 % , and 100 % raw passion fruit . Results of the identifications were affected by the fruit  shooting process. Key words : Artificial Neural Network, Back Propagation, Identification, Image Processing, Passion Fruit
Analysis of The Cost of Production Target in PT Perkebunan Nusantara IV Unit Pabatu Freddy Kancan Sembiring; Saipul Bahri Daulay; Sulastri Panggabean
Jurnal Rekayasa Pangan dan Pertanian Vol 3, No 3 (2015): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

The increase of production and quality of palm oil and palm kernel oil is strongly influenced by the production of fresh fruit bunches. Therefore, efforts are needed to increase the production of fresh fruit bunches. Pabatu estate is one of business unit of PT Perkebunan Nusantara IV that has head office in Medan, North Sumatera and engaged in the business of oil palm plantation and processing. The Study was aimed to analyze factors that influence the cost application in achieving production target, such as maintenance, premi harvest, security, and transportation. The factors were analized by Analythical Hierarchy Process (AHP) method. The results showed that maintenance cost was in first priority with the quality value of 0,4255. Security cost wast in the second priority with quality value of 0,2739. Harvest premi cost was in the third priority with quality value of 0,1613, and transportation cost was in the fourth priority with quality value of 0,1391, so that PT Perkebunan Nusantara IV Unit Pabatu should pay attention to maintenance cost in achieving production target Keywords: Analythical Hierarchy Process, Crude palm oil, Palm kernel oil, Fresh fruit bunch, Production system.
Modification of Soybean Skin Peeler With Blower Lestari Andaluri; Achwil Putra Munir; Sulastri Panggabean
Jurnal Rekayasa Pangan dan Pertanian Vol 3, No 3 (2015): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

In general, soybean epidermis peeler bring out soybean seeds along with the epidermis so it must be separated manually. Improvement is necessary to solve the problem. One of the alternatives is to modify the peeler by adding blower. With the addition of the blower, the soybean seeds and the epidermis brought out separately so that the peeler work capacity can be improved. Soybean epidermis peeler with blower was designed to peel the epidermis in the dry state. Blower in this peeler was centrifugal blower with 150 Watts of power, 3000 rpms of speed, and 2 inches diameter of the output hole. Effective capacity of the modified soybean epidermis peeler with blower in this study was divided into three different rate was blower with maximum rate was 54,64 kg/h; blower with medium rate was 43,48 kg/h; and blower with minimum rate was 52,63 kg/h. Keywords : blower, Soybean peeler, work capacity
Utilization of Rice Husk and Tea Waste as Charcoal Briquettes with Molasses Adhesive Ahmad Rifai Siregar; Lukman Adlin Harahap; Sulastri Panggabean
Jurnal Rekayasa Pangan dan Pertanian Vol 3, No 3 (2015): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

Briquette is one of the biomass fuel. Briquette is used as an alternative energy sources which is very simple and inexpensive. Biomass used in this research were rice husk and tea waste. The aim of this research was to find composition of  Bio-Carbon Briquette processing of rice husk and tea waste and to determine the best Bio one. Testing was conducted using a non-factorial completely randomized design with parameters of water content, density, firmness press, calorific value, and ash content. The results of this research showed that the composition of the briquette materials was unaffected the water content and had highly significant effect on density, firmness press, calorific value, and ash content. The best water content in this research was 5.80%, that met Japanese, America, England and Indonesia standards. The Density value was 0.75 g / cm3 which dit not met briquettes of Japanese, America, England and Indonesia standards. The best of fumness press in this research was 2.37kg/cm2did not met the standards of briquette of Japanese, America, England and Indonesia. The best of calofic value in this research was 5661.41 kal/gr that met the standards of briquette of Indonesia, but did not met standards of briquette of Japanese, England, and America. The best of ash content valuein the research was 5.876% that met the standards of briquette of Indonesia, Japanese, England and America. Keywords : briquette, biomass, rice husk and tea waste.
Design and Construction of Tempeh Slicer Fauzan Luhfi; Achwil Putra Munir; Sulastri Panggabean
Jurnal Rekayasa Pangan dan Pertanian Vol 4, No 4 (2016): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

Slicing is reduction of the size of the foodstuffs into slices with a certain degree of thickness to be more easily processed into other products, one of them is into chips. This research was aimed to design, create, test and analyze the economic value tempeh slicer. Parameters observed were the effective capacity of the tool, the percentage of damaged materials, and economic analysis. Based on this research, it was summarized that the effective capacity of the equipment was 85.26 kg/hour  and the damaged material’s percentage was 15.3%. Economic analysis was as follows: basic costs for the first to the fifth year ware Rp. 128.416 / kg, Rp. 128.635 / kg, Rp. 128.870 / kg, Rp. 129.123 / kg and Rp. 129.395 / kg respectively. Break even point was 236,66 kg / year. Net present value was Rp. 1.270.819.564,93.  Internal rate of return was 52,68%. Keywords: tempeh, knife, slicing, equipment
Co-Authors Achwil Putra Munir Achwil Putra Munir Ahmad Rifai Siregar Doli Garesya Agian Elfani Oktianto Endra Rahmadan Fauzan Luhfi Freddy Kancan Sembiring Hotlin Dermawati Apriani Lestari Andaluri Lukman Adlin Harahap S Bahri Daulay Saipul Bahri Daulay Sumono Sumono