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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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Physical, Chemical, and Sensory Characteristics Evaluation of Bread from Composite Flour of Wheat, Cassava, Soybean, and Potato Starch with the addition of Xanthan Gum Pitaria Ferawati S.; Ismed Suhaidi; Zulkifli Lubis
Jurnal Rekayasa Pangan dan Pertanian Vol 2, No 1 (2014): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

The aim of this research was to find physical, chemical, and sensory characteristics evaluation of bread from composite flour of wheat, cassava, soybean, and potato starch with the addition of xanthan gum. This study was conducted to determine the physical, chemical, and sensory characteristic of bread from composite flour (wheat, cassava, soybean, and potato starch) with the addition of xanthan gum. The research was conducted in July-August 2013 in the Laboratory of Food Technology, Faculty of Agriculture, USU, Medan, used a completely randomized design with two factors : the proportion of flour in composite flour(T) ; (100 : 0 : 0 : 0 ; 50 : 15 : 15 : 20 ; 50 : 25 : 10 : 15 ; 50 : 35 : 5 : 10, and 50 : 45 : 0 : 5) and xanthan gum concentrations (G) ; (0 % , 0,5 %, and 1 %). The parameters analyzed were moisture content, ash content, fat content, fiber content, protein content, bread volume, organoleptic value of color, aroma, flavor, and texture. The results showed that the ratio of wheat, cassava, soybean, and potato starch had highly significant effect on water content, ash content, fat content, fiber content, protein content, bread volume, and value of organoleptic color, aroma, flavor, and texture. Concentration of xanthan gum gave highly significant effect of the fiber content, bread volume, value of organoleptic color, flavor, texture but had no significant on moisture content, ash content, fat content, protein content, and aroma. Interaction of these two factors had highly significant effect on water content, fat content, protein content, bread volume, and value of organoleptic texture. Proportion of wheat flour, cassava, soybean, and potato starch of (50 : 15: 15 : 20) and 1 % xanthan gum produced bread with the best quality. Keywords : bread, cassava, composites flour, soybean, xanthan gum
The effect of Concentration of Chitosan As Edible Coating and Storage Time on The Quality of Guava Fruits Randi Fernando Sitorus; Terip Karo-Karo; Zulkifli Lubis
Jurnal Rekayasa Pangan dan Pertanian Vol 2, No 1 (2014): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

The aim of this research was to find the effect of concentration of chitosan and storage time on the quality of guava fruits. This research was performed in February-March 2013 at the Laboratory of Food Technology, Faculty of Agriculture, University of North Sumatera, Medan, using completely randomized design with 2 factors, i.e. : the concentration of edible coating (K) : (1%, 2%, 3% and 4%) and storage time (S) : (2 days, 4 days, 6 days and 8 days). Parameters analyzed were weight loss, moisture content, level of vitamine C, total acid, total soluble solid, total microorganism, hardness, color score, organoleptic values of color, flavor and taste. The results showed that the concentration of chitosan had highly significant effect on all parameters. Storage time had highly significant effect on all parameters. The interactions of the two factors had significant effect on weight loss and had highly significant effect on level of vitamine C, flavor and taste. The chitosan concentration of 3 % with storage time of 8 days could protect the quality of guava and was more acceptable. Keywords: chitosan concentration, guava, storage time
Study on the Effect of Overflowing length on the Water Quality and Soil Physical Properties of Andosol together with Tomato Plant Growth (Lycopersicum esculentum Mill.) Anugrah Aqsra Bandi; Sumono Sumono; Achwil Putra Munir
Jurnal Rekayasa Pangan dan Pertanian Vol 2, No 1 (2014): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

Flooding and overflowing on horticultural plant especially for tomato plants cause failure of vegetative and generative growth.The extent to which tomato plants tolerance if grown in andosol soil to overflowing and flooding need to be studied. This research was aimed to examine the Effect of Overflowing length on the water quality and soil physical properties of andosol together with tomatoe plant growth. The result of the research showed that evapotranspiration at beginning of growth of 15 days since plant (dsp) was 1,79 mm/day, on active growth (16-45 dsp) was 3,45 mm/day, on maximum growth (46-75 dsp) was 3,45 mm/day and the end of growth (>75 dsp) was 2,41 mm/day. Water quality that unfavorable effect towards the growth of tomato plants for 2 days in overflowed conditions and overflowed until the plants death was dissolved oxygen. Dissolved oxygen for 2 days in overflowed conditions was 1,98 ppm and for overflowed conditions until the plants death was 1,68 ppm.Soil Physical properties that unfavorable effect towards the growth of tomato plants for all conditions was soil temprature. Soil temprature for 2 days in overflowed conditions was 27,83oC, for overflowed conditions until the plants death was 28,25oC and for spacey capacity conditions was 27,85oC. For 2 days in overflowed conditions the soil salinity was over the restriction limit which was 5,8 mS/cm. Blossom production of tomato plant on spacey capacity conditions was 27 blossom/plant, for 2 days in overflowed conditions was 17 blossom/plant and for overflowed conditions until the plants death has not blossom. Key word : overflowing, tomato plants, water quality, soil physical properties
The Effect of Ratio of Oyster Mushroom and Tapioca with Addition Egg White on The Quality of Oyster Mushroomballs. Septian Ruri; Terip Karo-Karo; Era Yusraini
Jurnal Rekayasa Pangan dan Pertanian Vol 2, No 1 (2014): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

The aim of this research was to find the effect of ratio of oyster mushroom and tapioca with the addition of egg white on the quality of oyster mushroom meatballs. This research was using completely randomized design with two factors, i.e. : the mixture of oyster mushroom and tapioca (T) : (90% : 10%, 80% : 20%, 70% : 30%, and 60% : 40%) and the percentage of egg white (P) : (15%, 12%, 9%, and 6%). Parameters analyzed were moisture content, ash content, protein content, crude fiber content, the flavor scores and texture scores, hedonic value of the color, smell, taste, and texture. The results showed that the ratio of oyster mushroom and tapioca had highly significant effect on moisture content, ash content, protein content, crude fiber content, the flavor scores and texture scores, hedonic value of the color, smell, taste, and texture. The percentage of egg white had highly significant effect on moisture content, protein content, flavor scores and texture scores, hedonic value of the smell, taste, and texture. Interactions of the two factors had highly significant effect on moisture content and texture scores. Ratio of oyster mushroom and tapioca 80% : 20% and the percentage of 12% egg white produced the best quality of oyster mushroom meatballs and more preferably. Keywords : Egg white, mushroomballs, oyster mushroom, tapioca
Influence on The Speed of Processing Multiple Implementation Models Wetland Anwar Manik; Achwil Putra Munir; Saipul Bahri Daulay
Jurnal Rekayasa Pangan dan Pertanian Vol 2, No 1 (2014): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

.Analysis of these wetland cultivating was aimed to obtain information on wetland cultivating until ready for planting using a two-wheeltractor, calculating the effective field capacity, field efficiency, and fuel consumption for cultivation until the condition of the land ready for planting with working speed variations. This study uses a factorial randomized block design with two factors.The first factor was the treatment variation until ready for planting and the second factor was the variation of speed (1m/s, 1,2m/s, and 1,4m/s). Parameters measured were land cultivating capacity, fuel consumption, efficiency of tractors, and economic analysis. Results of this study showed that the difference in treatment until ready for planting had a significant effect on effective field capacity, efficiency, and fuel consumption. The highest Effective Field Capacity (EFC) of any cultivating until the rice fields ready for planting was at a speed of 1.4m/s. The highest processing efficiency was obtained at a speed of 1.4m/s. The greatest fuel consumption obtained in the second cultivation pattern. Keywords: tractors, paddy fields,cultivatinguntilready to plant.
The Utilization of Bagasse Natural Fiber to Make a Fiber Rope Chairunnisa Ritonga; Saipul Bahri Daulay; Ainun Rohana
Jurnal Rekayasa Pangan dan Pertanian Vol 2, No 1 (2014): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

Bagasse is a byproduct of extraction (squeezing) of sugar cane. A single sugar mill can produces around 35-40% (weight) of bagasse from sugar cane milled. Bagasse which is a sugar cane mill waste can be processed into a fiber rope. Fiber rope can be made from many kind of tree bark, it makes the utilization of bagasse for a fiber rope is possible. The research was aimed to make a fiber rope from bagasse and to test the endurance of sugar cane fiber rope toward a tensile test.Results of the research indicated that each substance tested with the same weight produced different string diameter. Average value of examinatied 8 g streng had diameter of 5,83 mm, length of 58,3 mm, elongation of 22,66 mm, maximum loaded of 283,33 N, cross section of 2,489 x 10-5 m2, elongation at break of tensile strength of 105,6 x 105 N m-2, strain of 0,39, elasticity of 303,9 x 105 N m-2 and flexing of 38,7 %. Key Words: bagasse, fiber, rope, spun, tensile test.
The Effect of RPM Coffee Roaster Machine on the Product Quality Dedi Johanes Silaen; Achwil Putra Munir; Ainun Rohana
Jurnal Rekayasa Pangan dan Pertanian Vol 2, No 1 (2014): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

The RPM of coffee roaster mixer tool is needed to care. The machine RPM will affect the roasting quality. Various level of PRM were tested to know the quality of coffee produced. Research had been conducted at agricultural engineering laboratory, faculty Agricultural USU in July till October 2013 with using factorial randomized block design with one factor i.e 15, 25, 35, 45, and 55 revolution per minute. Parameters observed were organoleptic test, yield, process capacity and water content. The results showed that the RPM had highly significantly effect on the organoleptic test, yield, process capacity, and water content. Keywords:Ccoffee quality, coffee roaster machine, RPM test.
Information System of Agricultural Land in Manduamas Sub District Tapanuli Tengah Regency. Hotdi Briyan; Achwil Putra Munir; Ainun Rohana
Jurnal Rekayasa Pangan dan Pertanian Vol 2, No 1 (2014): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

Information System of Agricultural Land ( Rice) in Manduamas Sub District area was still done manually, so the storage, processing and delivery of information to be ineffective and inefficient. In the information management most the result were done by human role and took a relatively longer time. Moreover, the information seekers-and decision-makers also had difficulty in obtaining the data they need. Therefore, it is necessary to further develop of the information system. Web-based information system is considered to be a solution in order to access information faster, systematicaly and easy to use. For that a web-based information systems in the management of imformation system of agricultural land ( rice) in Manduamas sub district was designed. Agricultural land network information system was designed using PHP programming language, MySQL database and the method of system development life cycle (SDLC). The result was adynamic website that displays information and could interact with the user and was user friendly where the model user interface of the web was made to facilitate the user to use system properly. Keywords: Agricultural land, information system, Manduamas Sub district, rice, web.
Determination of Value of String Bean and Cucumber Plants Factors Using Small Plots and USLE Methods on Andepts Soil in Kwala Bekala Estate USU Muhammad Eko Hardiyansyah; Sumono Sumono; Saipul Bahri Daulay
Jurnal Rekayasa Pangan dan Pertanian Vol 2, No 1 (2014): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

One way to overcome erosion is using vegetative methods, where its influence can be manifested by the C factor. The best C factors used in determining the amount of erosion is the value of C in the local area. This study was aimed to determine the value of string bean and cucumber crop factors on the Andepts soil during April to August 2013 using the method of small plots and USLE. Parameters used in determining the C factor were the amount of erosion, the allowable erosion rate, and the erosion hazard level. The results showed that the amount of erosion on land without a crop was 0,46 ton (ha.year)-1,on cucumber land was 0,41 ton (ha.year)-1, on string bean land was 0,31 ton (ha.year)-1. The amount of allowable erosion rate was 31 ton (ha.year)-1. While erosion hazard rate on land without a crop was 0,014; on cucumber land was 0,013 and on string bean land was 0,010 which include in low category. The value of string bean crop factor using rainfall research data for 4 months and 10 years data was 0,685 and 0,690 respectively. The value of cucumber crop factor using rainfall research data for 4 months and 10 years data was 0,902 and 0,911 respectively Keywords : Andepts, C factor, Erosion, Kwala Bekala USU.
Paper-Based Characteristics of Banana Trunk (Musa Paradisiaca) and Waste Paper Nova Suriani; Ainun Rohana; Nazif Ichwan
Jurnal Rekayasa Pangan dan Pertanian Vol 2, No 1 (2014): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

It is time for Indonesia to reduce dependence on using paper with tree raw materials. It can be an alternative environmentally friendly paper and does not increase the cut down of trees. The making of paper using the trunk of banana (Musa paradisiaca) and waste paper is suitable to overcome the problems of the use of the current paper. This research was done on May-Juni 2013. The paper making was done at Jl. Roso. No. 8 Delitua Medan North Sumatra and the testing of paper was done in PT PDM Indonesia, Laboratory Medan, using non-factorial randomized block design with one factor.i.e. waste paper composition (0%, 10%, 20%, 30%, 40% and 50%). Parameters observed were grammage, tensile and tearing strength. The results showed that the composition of the waste paper had highly signifficant effect on grammage and tensile strength. The resulting paper could be categorized as art paper with the best result of grammage was at the composition of 30% (350 g banana trunk and 150 g waste paper), and tensile strength and tearing strength at the composition of 0% (500 g banana trunk). Keywords: banana trunk, pulp composition, paper, waste paper

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