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Jurnal Teknologi Pertanian
Published by Universitas Brawijaya
ISSN : 14115131     EISSN : 25282794     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Computer Science & IT
Jurnal Teknologi Pertanian diterbitkan oleh Fakultas Teknologi Pertanian Universitas Brawijaya untuk penyebarluasan hasil penelitian yang dilakukan oleh para peneliti dari dalam dan luar Fakultas Teknologi Pertanian Universitas Brawijaya. Jurnal Teknologi Pertanian terbit tiga kali dalam setahun, memuat tulisan hasil penelitian yang termasuk dalam lingkup disiplin ilmu pengetahuan yang terkait dengan Ilmu-ilmu Teknologi Pertanian guna menunjang pengembangan ilmu pengetahuan dan teknologi serta pembangunan nasional.
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Articles 9 Documents
 1 
Search results for , issue "Vol 11, No 3 (2010)" : 9 Documents clear
Modification and Perfomance Test of Orbapas (Soybean Seed Peeler) Lutfi, Musthofa; Fanani, Ahmad; Abdul Fatah, Gatot Suharto
Jurnal Teknologi Pertanian Vol 11, No 3 (2010)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

The objective of this research is modification of driving engine on soybean seed peeler Orbapas uses an electric motor, and then examination the performance of modified Orbapas. The hypothesis of this study is the greater the speed of rotation Orbapas, will result the greater peeling capacity. The research was done by modification of peeler with add electric motor, gearbox, and holder, then the performance of peeler with 3 speed was tested. Result of this research showed that the peeling capacity increased after modification of Orbapas as followed:15.67 kg/hour at 73 rpm, 19.46 kg/hour at 93 rpm, and 21.9 kg/hour at 119 rpm, compared to original capacity of 14.12 kg/hour at 80 rpm.Keywords: orbapas, peeling capacity, electric motor
Consumer’s Satisfaction Assessment for Service Quality by Servqual Method (Study Case at “Waroeng X“Soekarno Hatta-Malang Branch) Mustaniroh, Siti Asmaul; Lestari, Endah Rahayu; Sari, Eko Natalia
Jurnal Teknologi Pertanian Vol 11, No 3 (2010)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

“Waroeng X” is one of restaurants in Malang that provide steaks and drinks that not only give product’s quality and quantity, but also give a good service in order to get constumers. The purpose of this research is to define the level of consumer’s satisfaction toward service quality by servqual method approach and to know the major priority attributes “Waroeng X” Soekarno Hatta-Malang branch. The results showed that all of dimensions had a negative satisfaction value, including un-satisfaction categories. Satisfaction value of each dimensions were, reliability of -0,136; responsiveness of -0,117; assurance of -0,173; empathy of -0,096; and tangibles evidence of -0,078. The major priority attributes in service quality improvements were: service time, product’s and serve’s quality, price,  empathy to the consumer’s complaints, pleasant and clean room, and the availability of additional facilities such as toilet, and parking area.Keywords: consumer’s satisfaction, service quality, Servqual method
Bioassay Testing of Infant Biscuit Supplemented with Moringa Leaf Protein Concentrate in Model of Malnutrition Rat Kholis, Nur; Hadi, Faris; Hadi, Faris
Jurnal Teknologi Pertanian Vol 11, No 3 (2010)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Malnutrition infants need high quality and quantity protein intake. So far, protein source for infant and children food product is limited in milk and its derivates which is an expensive material. Kelor (Moringa oleifera) leaf meal has been known as a potential protein source. Unfortunately, its protein digestibility is still low due to its high fiber content. The processing of Moringa Protein Concentrate (MPC) is able to eliminate its fiber content, so that it is effective to formulate in infant biscuit product as milk substitute for fighting malnutrition. The aim of this research was to determine the bioassay value of infant biscuit supplemented with MPC. The result showed that protein content of MPC was 60.48% and almost twice higher than moringa leaf meal. The protein digestibility of MPC biscuit was 80.45% and was not significantly different (P>0,05) compared to milk biscuit. Meanwhile, PER value of MPC was 2.29 and higher than milk biscuit. It concluded that MPC was effective to substitute milk in infant biscuit product and recover the health condition of malnutrition infant.Keywords: bioassay, MPC, infant biscuit, malnutrition
The Chemical Characteristics of Water Soluble Polysaccharides Extract from Sprouted Gembili (Dioscorea esculenta) Tuber Harijono, Harijono; Sunarharum, Wenny Bekti; Rakhmita, Isna Suci
Jurnal Teknologi Pertanian Vol 11, No 3 (2010)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Gembili contains water-soluble polysaccharides (WSP) besides other components such as starch, fiber, protein, and other carbohydrate.  The suitable method should be developed to separate WSP from other components such as protein that bound tightly.  It is supposed that limited sprouting could be separate WSP more easily, due to hydrolysis of some major components in gembili tuber.  The objective of this research was to elucidate the effect of sprouting time on the characteristics of gembili WSP. This research used Completely Randomized Design with 5 levels (sprouting time of 6, 12, 18, 24, 30 days). The results showed that sprouting time affected water, amylose, crude fiber, protein content, and yield extracted WSP.  The analysis of precipitate in centrifugation to separate starch from filtrate in WSP extraction process, showed that sprouting time affected total sugars, reducing sugars, amylose, and crude fiber content of precipitates.Keywords: gembili, sprouting time, water soluble polysaccharides
The Designing of Disk Type Peanut Shell Cracker Tamrin, Tamrin
Jurnal Teknologi Pertanian Vol 11, No 3 (2010)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

The peanut shell cracker of cylinder type has been developed with the capacity of >150 kg/hour.  Meanwhile the peanut shell cracker of the medium scale has not been designed. This research was aimed to design the peanut shell cracker in medium scale.  The shelling mechanism of peanut shell cracker was based on the disk type rice peeler.  The peanut shell cracker peels the skin of peanut fruit by a pressure and friction.  The top of disk did not move and beneath of disk turned, and the feeder in hopper was placed at the top of disk.  The performance test of peanut shell cracker was based on clearance between two disks (5, 10, and 15 mm) and three level of rotation of beneath of disk were 90, 120 and 150 rpm.  The results showed that the shelling of peanut shell was optimum at 5 mm of clearance, and 90 rpm of rotation of beneath of disk.  The shelling efficiency was 93.06%.Key word: peanut shell cracker, peanut, disk type, medium scale
Modified Atmosphere Packaging (MAP) of Brown and Polished Rice Hawa, La Choviya; Lastriyanto, Anang; Bangun, Subiantoro
Jurnal Teknologi Pertanian Vol 11, No 3 (2010)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Rice is the staple food of about 90% Indonesian people that contributed to 50% of carbohydrate requirement. The objectives of this research were to determine the weight loss, moisture content, density, texture, carbohydrate, colour and flavor of brown rice, polished rice I, and polished rice II packaged by modified atmosphere packaging (MAP).  Experimental-descriptive method with 2 factors was used in this research. First factor was types of rice (brown rice, polished rice I, and polished rice II) and second factor was gas composition (99.56% CO2, 100% N2; and normal atmosphere 78% N2, 20.8% O2, 0.03% CO2, and 1.17% other gasses). The packaging material was polyethylene 0.08 mm in thickness. Each treatment was replicated three times.  The results showed that storage with N2 can reduced weight loss, moisture content, and density. On the other hand, texture, carbohydrate, color and flavor of brown rice, polished rice I, and polished rice II were relatively stable.  Storage with CO2 keep the low moisture content of rice. MAP of all types of rice was better tan normal atmosphere storage.Keywords: brown rice, polished rice, CO2, N2, modified atmosphere packaging
Extraction of Natural Antioxidant from Local Sorghum Brown Variety and Its Activity Enhancement by Germination and Microwave Nisa, Fithri Choirun
Jurnal Teknologi Pertanian Vol 11, No 3 (2010)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Brown sorghum was reported as a source of antioxidants such as phenolic, tannin, anthocyanin. This research was designed into 2 steps. The first step was aimed to find out the best type of solvent (methanol, ethanol, and acetone) for antioxidant extraction in each fraction (milled grain and bran) of sorghum. The aim of the second step was to observe the effect of germination and microwave on antioxidant activity. Nested design was used in the first step. The results of the first step showed that best treatment in milled grain was obtained from ethanol with phenolic content of 100,28 mg/g, anthocyanin content of 28.34 ppm, tocopherol content of 2.24 mg/mL, antioxidant activity of 95.96%, and yield of 10.105%. The best treatment in bran was obtained from methanol with phenolic content of 89.74 mg/g, anthocyanin content of 50.70 ppm, tocopherol content of 10.55 mg/mL, antioxidant activity of 97.15%, and yield of  9.02%. The results of the second step research showed that germination has significantly affected (α=0.05) antioxidant activity and yield extract. The extract was characterized by phenolic content of 108.67 mg/g, anthocyanin content of 35.80 ppm, tocopherol content of 2.97 mg/mL, antioxidant activity of 98.00%, and yield of  16.94%. While microwave had significantly affected (α=0.05) tocopherol content, antioxidant activity, and yield extract. The characteristics of product were phenolic content of 113.71 mg/g, anthocyanin content of 48.68 ppm, tocopherol content of 17.40 mg/mL extract, antioxidant activity of 98.71%, and yield of  12.47%.Keywords: brown sorghum, natural antioxidant, microwave
Physical and Mechanical Properties of Edible Film from Porang (Amorphopallus oncophyllus) Flour and Carboxymethylcellulose P., Sudaryati H.; S., Tri Mulyani; Hansyah, Egha Rodhu
Jurnal Teknologi Pertanian Vol 11, No 3 (2010)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Porang (Amorphophallus onchophyllus) is a shrub and its tuber contains glucomannan that functions as dietray fiber.  Glucomannan is a polysaccharides comprised of galactose, glucose, and mannose.  Glucomannan and carboxymethylcellulose can be used as the raw materials of edible film, however the resulting edible film has low elasticity and the quality is affected by its dryness.  The aims of this reserach were to study the effect of glycerol as plasticizer and drying time on the edible film quality, as well as deterimation the best teratment.  This study used  Completely Randomized Design with two factors: glycerol concentration of 1, 2, and 3%; and drying time at 75C for 3, 3.5, and 4 hours.  The result showed that increasing drying time resulted in decreasing water vapor transmission, oxygen transmission, moisture content, water activity, elongation and thickness of edible film,  Meanwhile, increasing glycerol concentration decreased water vapor transmission, oxygen transmission, and water activity, but increased moisture content, elongation, and thickness of edible film.  The best treatment obtained at glycerol concentration of 3% and drying time of 4 hours.  The resulting edible film had characteristics as followed: moisture content of 25.58%, water vapor transmission of 4.65 g/m²/24 hours, oxygen transmission of 1.38 ml/m²/24jam, Aw of 0.54, elasticity of 65.57 %, and thickness of 0.13 mm.Keywords: porang flour, edible film, glucomannan, carboxymethylcellulose
The Analysis of Water Sub Critical Hydrolysis Conditions on Content in Fatty Methyl Ester Biodiesel Production by Supercritical Methanol Method Argo, Bambang Dwi; Swastomo, Budi
Jurnal Teknologi Pertanian Vol 11, No 3 (2010)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Biodiesel is an alternative fuel with a fatty acid ester composition made from raw vegetable oils/animal that has characteristics similar to diesel oil. High quality biodiesel fuel from oil/fat had been processed by two-stage supercritical metanol method which consisted of the hydrolysis process by mixing oil and water in sub-critical conditions that generated free fatty acids and glycerol, followed by esterification process that mixed free fatty acids with methanol in supercritical methanol conditions.  In this research, hydrolysis of frying oil at sub-critical conditions had been conducted in various conditions. The conditions were the ration of oil to water and hydrolysis time in the reactor chamber at sub-critical condition. Materials used in this research were commercial frying cooking oil and bottled water.  The purpose of this study was to find out the effect of hydrolysis at sub-critical condition on free fatty acids content generated in the production of biodiesel using super critical methanol.  The results showed that there was an increasing percentage of ALB in the hydrolysis reaction with sub-critical water conditions. The highest and significant ALB was 67.10% that obtained in ratio of water to oil 25:75 and holding time of 20 minutes. Fatty acid produced in super-critical reactor was solid at room temperature and the behavior of this product still required a thermal analysis for designing exhausting pipe from the reactor in order to prevent blockage.Keywords: Biodiesel, hydrolysis, sub-critical, free fatty acids

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