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INDONESIA
Jurnal Rekayasa Pangan dan Pertanian
Published by Universitas Sumatera Utara
ISSN : 2303386X     EISSN : -     DOI : -
Core Subject : Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Engineering
Jurnal Rekayasa Pangan dan Pertanian merupakan media untuk publikasi tulisan asli berkaitan dengan teknologi pangan dan keteknikan pertanian secara luas, yang diterbitkan atas kerjasama antara Program Studi Ilmu dan Teknologi Pangan dan Program Studi Keteknikan Pertanian Fakultas Pertanian USU.
Arjuna Subject : -
Articles 593 Documents
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Formulation of Simulation Crackers from Melinjo (Gnetum gnemon L.) and Papaya Leaf Extract Sartika Maranata Lumbangaol; Terip Karo-Karo; Herla Rusmarilin
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 purpose of this study was to determine the effect ratio of melinjo leaf extract with papaya leaf extract on the quality of simulation crackers. This study used non factorial completely randomized design i, e: ratio of melinjo leaf extract with papaya leaf extract (E) (100%:0%, 90%:10%, 80%:20%, 70%:30%, 60%:40%, 50%:50%). The analyzed parameters were moisture content, ash content, β-carotene content, tanin content, texture, and sensory test (color, flavor, taste, and crispness). The ratio of melinjo leaf extract with papaya leaf extract gave significant effect on moisture content, ash content, β-carotene content, tanin content and sensory test of taste. The best composition which gave the best quality on melinjo simulation crackers was the ratio 50%:50% of melinjo leaf extract and papaya leaf extract. . Keywords : Melinjo, papaya leaf extract, simulation crackers.
The Effect of Physical Treatment and Storage Time on The Quality of Sugar Cane Juice Septyan Aindr Irawan; Sentosa Ginting; Terip Karo-Karo
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 aim of this study was to maintain the quality of sugar cane juice by physical treatments on the sugar cane juice by cooling at 5oC the prescribed periode, heating at 85oC until 5 minutes, as well as combine of heating at 85oC until 5 minutes and cooling at 5oC the prescribed periode, and control for the  1, 3, 5, and 7 days. Study was conducted in the Laboratory of Food Technology, Program study Food and Science Technology, Faculty of Agriculture USU, Medan, using factorial completely randomized design. The parameters analyzed were total sugars, ash, total microbes, pH, total acid, total soluble solid, and organoleptic values of color, aroma, and taste.       The results showed that the physical treatment and storage time gave highly significantly different effect on all parameters except for ash. The interaction of the two factors had highly significantly affected all parameters except total soluble solid and ash. Sugar Cane juice that was had of heating at 85oC until 5 minutes and cooling 5oC the prescribed periode the best quality of phisico chemical within the prescribed period. Keywords : Physical treatment, Storage time, Sugar Cane Juice
The Effect of Ratio of Beet and Pineapple Juice and Concentration of Sugar on Quality of Bitnas Syrup Dyna Juniaty; Sentosa Ginting; Terip Karo-Karo
Jurnal Rekayasa Pangan dan Pertanian Vol 3, No 3 (2015): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

This research was to determine the effect of ratio of beet and pineapple juice and concentration of sugar on the quality of syrup. This research was conducted in September 2014 in Food Techonology Laboratory, Agriculture Faculty, North Sumatera, Medan. This research was using factorial Completely Randomized Design (CRD) with two factors, i.e :ratio of beet and pineapple juice (S)(70:30%, 60:40%, 50:50%, 40:60%, 30:70%) and concentration of sugar (G) (55%, 60%, 65%). The analyzed parameters were vitamin C content (mg/100 g sample), total soluble solid (oBrix), total acid (%), pH, viscosity (mpas), and organoleptic values (colour, aroma, and taste). The results showed that ratio beet and pineapple juice had highly significant effect on vitamin C content (mg/100 g sample), total soluble solid (oBrix), total acid (%), viscosity (mpas), and organoleptic values (colour, aroma, and taste). The concentration of sugar had highly significant effect on vitamin C content (mg/100 g sample),total soluble solid (oBrix), total acid (%), viscosity (mpas), and organoleptic value of taste. The interaction of the two factors had highly significant effect on  organoleptic value of taste. The best treatment which gave the best effect on juice was 30:70%  of beet and pineapple juice and 65% sugar. Keyword : concentration of sugar, juice, ratio of beet and pineapple juice
Study of The Efficiency of The Production Costs of Agricultural Resources for Tillage in Wet Rice Fields in The Village of North Pelawi District of Babalan Langkat Ahmad Rizan Fadli; Saipul Bahri Daulay; Nazif Ichwan
Jurnal Rekayasa Pangan dan Pertanian Vol 3, No 3 (2015): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

One way to increase agricultural output in by agricultural intensification. One example of agricultural intensification is the use of appropriate processing resources. This study was aimed to assess the comparative efficiency of production costs and field capacity of processing time and processing resources of land use. Parameters measured were effective field capacity, the efficiency of tractors, fuel consumption, and economic analysis/processing fee. The results showed that the processing resources and processing time on wetland soil had significant effect on the effective field capacity and energy efficiency of the engine. Effective field capacity in the processing of land by human power in the morning was 0.056Ha/h and in the afternoon was 0.081Ha/h. Effective field capacity on the ground with the processing power of the engine in the morning was 0.787Ha/h and in the afternoon was 1,148Ha/h. The efficiency of the tractor in the morning was 61.357% with a fuel consumption was 1,041liters/hour. The efficiency of tractors in the afternoon was 89.492% with a fuel consumption was 1,338liters/hour. Processing costs for manpower resources in the morning and with afternoon was 2.000.000Rp/Ha and for the source of mechanical power in the morning was 882.300Rp/Ha and in the afternoon was 881.400 Rp/Ha. Keywords: effective field capacity, the cost of processing, wet rice.
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.
Effect of Destillation Temperature on Quality and Yield of Patchouli Oil of Direct Steam Destillation Type Hamjah Dalimunthe; Lukman Adlin Harahap; Achwil Putra Munir
Jurnal Rekayasa Pangan dan Pertanian Vol 3, No 3 (2015): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

On direct steam destilation type, destillation temperature needs to be considered. The temperature determines the quality of destilation product. This study tested various temperature on destillation of volatile oil in direct steam type destilation. The study was conducted at the Laboratory of Agricultural Engineering and analysis was done in Food Chemical Analysis Laboratorium Faculty of Agricultural in September 2014 to October 2014 A non-factorial completely randomized design with 95°C, 100°C and 105°C was used. Parameters measured were water content, free fatty acid and yield. The results showed that the temperature had  significant effect on yield. The best treatment was the U3 treatment (105°C) which produced 21,1% water content, and 0,44% yield. Key word: Destillation temperature, direct steam, patchouli oil
Field Efficiency and Production Cost of Some Rice Field Tillage Tools in Kecamatan Pangkalan Susu Kabupaten Langkat Ivan Yolessa Butar-Butar; Lukman Adlin Harahap; Saipul Bahri Daulay
Jurnal Rekayasa Pangan dan Pertanian Vol 3, No 3 (2015): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

Field eficiency and production cost in this research was to get information on rice field tillage using two-wheels tractor, to calculate effective field capacity and field efficiency, fuel consumption and production cost of tillage using some rice field tillage tools. This research used non-factorial completely random design with treatment of plow types (P) consisted of three types i.e: (P1= Singkal plow, P2= Rotary plow I, P3= Rotary plow II). The parameters were field capacity, fuel consumption, tractor efficiency, and economic analysis.The results showed that the treatments of rice field tillage gave significant effect on effective field capacity, efficiency and fuel consumption. The highest effective field capacity of all the rice field tillage was on field 1 and field 3. The highest tillage efficiency was on field 2. The highest fuel consumption was on field 3. Keywords: plow, rice field, tractor.
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.

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