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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 8 Documents
 1 
Search results for , issue "Vol 13, No 3 (2012)" : 8 Documents clear
Characteristics of Soaked and Dried Water Yam Flour as Material for Producing Edible Paper Indrastuti, Erning; harijono, Harijono; Susilo, Bambang
Jurnal Teknologi Pertanian Vol 13, No 3 (2012)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

This  research aimed to study the physicochemical characteristics of  water yam flour are due to soaking and drying treatments, as material for edible paper, as a substitute for rice flour in the producing of rice paper (fresh spring roll wrapper).  This study used Randomized  Block Design with two factors: soaking time of 0, 24, and 48 hours; and drying temperature at 40, 50, and 60 °C. The result showed increasing soaking decreased  mucilages, meanwhile increasing soaking time increased swelling power. Moisture content did not differ significantly (p>0.05).  Soaking 24 hours produced the highest final viscosity at all drying temperature. Soaking 24-hour and drying temperature 50 °C treatment could be suggested for producing yam flour and was recommended as  raw material for edible paper processing.Keywords: water yam flour, viscocity, swelling power, physichochemical properties, edible paper
Study of Preparation Sorghum Flour and Application for Analogues Rice Production Budijanto, Slamet; yuliyanti, Yuliyanti
Jurnal Teknologi Pertanian Vol 13, No 3 (2012)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Sorghum (Sorghum bicolor L. Moench) is one of cerealia that high carbohydrate and protein sources. This research is aimed to obtain effect of conditioning to yield sorghum flour and sorghum varieties toward characterization of analogues rice based on organoleptic analysis. Analogues rice was produced by twin screw extruder. Conditioning process is done by added water such as 0, 10, 15, 20, and 25% from sorghum’s mass. Sorghum varieties that are used in this study are Pahat, B100, Numbu, and Genjah. All product was selected by sensory analysis. The highest yield of sorgum flour was obtained from additional of 25% water before milling process. The result of sensory analysis showed that sorghum varieties was significant effect to rice analogues. Rice analogues from Pahat and Numbu sorghum has higher consumer acceptance. Carbohydrate content of analogues rice F1 and F3 are 91.58% and 92.40%. Total dietary fiber of analogues rice F1 and F3 are 4.02% and 3.65%.Keywords: diversification, healthy rice, carbohydrate sources
Low Tannins and HCN of Lindur Fruit Flour Products as an Alternative Food sulistyawati, Sulistyawati; Wignyanto, Wignyanto; Kumalaningsih, Sri
Jurnal Teknologi Pertanian Vol 13, No 3 (2012)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Lindur fruit (Bruguiera gymnorrhiza Lamk.) has opportunities to be explored as an alternative food because it contains high carbohydrate that can be processed into flour. Lindur fruits contain antinutrient, namely tannin and Hydrogen Cyanide (HCN) that of which concentration should be reduced first before processing to be safe for consumption. This study aims to determine the concentration of rice husk ash and the right soaking time to decrease the level of tannins and HCN of  the lindur fruit flour  into safe limits level for consumption. This research used Randomized Group Design with two factors, namely rice husk ash concentration (20, 25, 30% w/w) and immersion time (12, 24, 36 hours). Analysis of Variance was used as Statistical data analysis of the research. Duncan Multiple Range Test on the level of sygnificancy 1% was used to test the different among treatment. The result shown that soaking lindur fruit at the concentration 30% w/w of husk ash solution in 24 hours can be reduced anti-nutrient substance to the safe limit for consumption, with the remaining tannin levels at 0.206% and 3.435 ppm of HCN. Lindur fruit drying to be processed into flour used temperature of 70 0C can reduced moisture content of 8.468% in 10 hours and produced the flour which meet the requirements as a brownish color food; 96.271% absorption of water; yield at 18.940%; 82.092% of carbohydrate; 5.597% of protein; 1.797% of fat; 18.476% of amylose; 8.701% of crude fiber; 1.609% of ash;   0.192% of tannins and 3.375 ppm of HCN. Keywords: mangrove, rice husk ash, soaking, drying temperatur
Sucrose Content Loss in the Harvest-Loading-Transport System at PG Sindang Laut and PG Tersana Baru, Cirebon Bantacut, Tajuddin; sukardi, Sukardi; Supatma, Irfan Ardiansyah
Jurnal Teknologi Pertanian Vol 13, No 3 (2012)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

The loss of sucrose in the cane sugar production could reach 35%. Harvesting, loading and transporting the sugarcane contribute significantly to the total lost prior to milling, ranging from 5–25%. The aims of this research were to identify factors that influence the harvest-loading-transport system, to analyze the pattern of sucrose content loss in sugar cane before milling, and to recommend means of improving the harvest-loading-transport system according to the exixting condition of sugar factories. The implementation of the harvest-loading-transport system can be influenced by many factors, among them are the factors determining the chopping schedule (T-score) which consist of planting time, difference between below purity level and upper purity level, average sucrose content, difference between upper sucrose content and below sucrose content, maturity factor, increase coefficient, durability coefficient, shoot auger pest, plant condition, and distance. The felling system is determined by the plantation layout, infrastructure (road, bridge conditions), topography, climate and weather, and equipment for fire tackling.Keywords: cane sugar production, sucrose content, sucrose losses, harvest-loading-transport
Modification of Dry System Cotton Delinter to Increase Machine Capacity Fatah, Gatot Suharto Abdul; soebandi, Soebandi; Lutfi, Musthofa; Widodo, Puji
Jurnal Teknologi Pertanian Vol 13, No 3 (2012)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Dry system delinter machine designed by Indonesian Agency for Agriculture Research and Development, Serpong, Indonesia in cooperation with Indonesian Tobacco and Fiber Crops Research Institute, Malang, Indonesia has managed to assemble a seed processing equipment delinter dry system using nitric acid. The advantages of this tool are : the process is shorter (only 2-3 hours), no sunlight compared to wet systems (sulfuric acid) which will take approximately 2-3 days and does not pollute soil and water environments. But the tool still has a weakness, where the machine is not used anymore because delinter dimensions of the machine is too big. In addition there are the seeds of cotton delinted crust layer due to heating at the contact of nitric acid vapor to cotton seeds  rudimentary. It is therefore necessary modifications to the engine of delinter the dry system. The results have been obtained by modification of the engine delinter dry system that is able to clean the rest of cotton with good results. It has also  improved capacity of 120 k /h to 150 kg/hour. Nitric acid vapor has been wetting the rest can be directed to the distillation, so as not to endanger the operator. Nitric acid requirements prior to 1 L to 120 kg of seed cotton, can be saved to 0.9 L for 150 kg of seed cotton. Engine capacity can be increased of 25% and the nitric acid need to save as much as 35%.Keywords: delinter dry systems, cotton, nitric acid vapor
Optimization of Process Variables on Ethanol Production from Sorghum Grain Amin, M. Nur Ghoyatul; Hidayati, Darimiyya; Indarto, Cahyo
Jurnal Teknologi Pertanian Vol 13, No 3 (2012)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

This research was aimed for obtaining high level of yield in ethanol production from sorghum grain (Sorghum bicolor L.). Response surface methodology (RSM) is selected to optimize the process variables in ethanol production by employing Box Behnken design. The factors consist of Ammonium sulfate concentrations, shaking rates, and fermentation times, which are designed at 0%, 0.2%, 0.4%, 0 rpm, 50 rpm 100 rpm, 56 hours, 64 hours, 72 hours respectively. Second order polynomial model was developed by Design expert 07 to estimate the ethanol yield by different level for each factor and the regression square was 90.09%. Optimal solution in this work was determined by contour plot, with the highest yield was 39.55%(v/w) by combination of ammonium sulfate concentration, shaking rate, fermentation time are 0%, 31.69 rpm, 72 hours respectively.Keywords: box behnken, Fermentation, yield
Heat Stability of Red Fruit Extract (Pandanus conoideus) Color as Potential Source of Natural Pigments Satriyanto, Budi; Widjanarko, Simon B.; Yunianta, Yunianta
Jurnal Teknologi Pertanian Vol 13, No 3 (2012)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

The most important nutritional component in red fruit Pandanus conoideus is pro-vitamin A in the form of β-carotene. β-carotene is a non polar, long-chained carbon organic compound. Extraction of red fruit’s oil in volves thermal process on boiling phase. β-carotene is unstable at high temperatures, so the red fruit’s oil quality may decrease on in appropriate heating temperature and duration. The purpose of this research were to determine the effects of extraction time by boiling at 85 ⁰C to the pigment quality of red pandanus fruit extract’s oil (RFOP). Experiments were performed by Completely Randomized Design (CRD) with single factor, heating duration (60 minutes, 120 minutes, 180 minutes, 240 minutes, 300 minutes and 360 minutes). Research results showed that heat-extraction time in optimum temperature would affect on total carotenoids and β-carotene content of RFOP so that stability of pigment’s color was optimal and stable. Treatments also affect moisture content, yield and color L*, a *, b*. Extraction time that provide the best results was 360 minutes at 85 ⁰C. GCMS analysis showed the dominant compounds of RFOP were heptadecene-(8)-carbonic acid (79.66%), and hexadecanoic acid (5.62%). Keywords: β-carotene stability, heating effect, color intensity, Papua local potential, red fruit GCMS chromatogram
Purification and Characterization of Protease from Protease-producing Bacteria Isolated from Tofu Whey Wardani, Agustin Krisna; Nindita, Lia Oriana
Jurnal Teknologi Pertanian Vol 13, No 3 (2012)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

In this study, soybean liquid waste (tofu whey), was used to isolate the protease- producing bacteria. The aim of this research is to purify and characterize the protease isolated from protease producing bacteria. Thirty isolates were obtained from isolation and screening of protease-producing bacteria from tofu whey.  One isolate, LnA4, had the highest protease activity (0.123 U/mg). The protease was purified by ammonium sulphate and dialysis resulted an enzyme with specific activity of 7.13 U/mg with purification fold 12.96. The maximum protease activities for the enzyme was attained at 37 ⁰C, pH 7.5 and 0,6% of casein concentration. The KM and Vmax of the enzyme were 0.269 mg.mL-1 and 0,207 mg.mL-1.minute-1, respectively.  The molecular weight of the enzyme was determined as 29.71 kDa on  SDS-PAGE and zimogram. Keywords: isolation, purification, characterization, protease, tofu whey

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