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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 7, No 3 (2006)" : 8 Documents clear
Viability of Immobilized Probiotic Bacteria, Bifidobacterium bifidum, Lactobacillus acidophilus and Lactobacilus casei, in an Emulsion of Corn and Their Survival in Subsequent Treatments Maligan, Jaya Mahar; Kusnadi, Joni; Murtini, Erni Sofia
Jurnal Teknologi Pertanian Vol 7, No 3 (2006)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

The effectiveness of corn oil emulsion as a protective agent for immobilization of probiotic bacteria cells, B. bifidum, L. acidophilus and L. casei and subsequent treatments, i.e. various conditions of storage and processing, was studied. The immobilized cells were subjected to each of the following: storage conditions at low temperatures 4 ± 1 oC and -10 ± 1 oC, at low pH (pH 1.0 and 2.0), bile salts 2% and processing conditions (25% sucrose solution. 10% brine, and heat treatment up to 80 oC). The statistical approach employed in the experiment was the Post Test Only with control Group Design and a paired sample test was then conducted. The results showed that the viability of the tested probiotic bacteria cells varied with the type of bacteria and conditions of storage processing. The immobilization of probiotics in corn oil emulsion has significant effect on the viability of B. bifidum, L acidophilus and L. casei subjected to temperature of -10 ± 1 oC, at low pH (1.0 and 2.0), heating process and 10% brine. Immobilization process has no significant effect on the viabilities of L. acidophilus and L. casei stored at -10 ± 1 oC, of B. bifidum  subjected to bile salts 2% and 25% sucrose solution. Immobilization process in corn oil emulsion was able to retain the probiotics viability as many as 1.12-4.23 log. Therfore, it can be concluded that an emulsion of corn oil is suitable for immobilization media for B. bifidum, L. acidophilus and L. casei protection them during storage at low temperatures, GI tract condition and above mentioned processing conditions. Keywords: Probiotics, viability, immobilization, corn oil emulsion
Antioxidant Activity of Carotene-rich Sweet potato Extracted with an Hexane-Ethanol Solvent mixture Nareswari, Nadia; Estiasih, Teti; Murtini, Erni Sofia
Jurnal Teknologi Pertanian Vol 7, No 3 (2006)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

<p style="text-align: justify;">A study was conducted to assess the antioxidant activity of carotene-rich sweet potato extracted with various ratios of solvent mixture hexane and ethanol. The respective ratios of solvent mixture hexane to ethanol were 4:0, 3:1, 2:2, 1:3 and 0:4. Observations were made on the colour parameter value, beta carotene, phenol content and antioxidant activity i.e radical scavenging and peroxide inhibition activities.</p> <p style="text-align: justify;">The radical scavenging activity of the extract varied with the ratio of the solvent found at the hecane to ethanol ratio of 1:3 (89.744%), followed by the ration of 2:2 (88.539%), 4:0 (87.305%), 3.1 (86.923%) and 0:4 (83.897%). Based on the value of EC50 and the ability to react with radicals, the extract of hexane to ethanol 1:3 and 0:4 were the two best in the radical scavenging activity, as shown by the correlation coefficient of 74.9%.</p> <p style="text-align: justify;">Similarly, the peroxide formation inhibition activity also varied with the ration of the solvent i.e. 61.126% (2:2), followed by 53.035% (1:3), 50.127% (0:4), 43.561% (3:1) and 36.046% (4.0). It seems that the carotenoids were the most influenced factor to the peroxide formation inhibition activity, as shown by the correlation coefficient of 63.4%.</p><p>Keywords: Carotene-rich sweet potato, ratio of hexane:ethanol, antioxidant activity</p>
The Use of Phosphate Modified Sago Starch in the making of Fish Ball of the Swangi Fish (Priacanthus tayenus) Rohaya, Syarifah; harijono, Harijono; Yunianta, Yunianta
Jurnal Teknologi Pertanian Vol 7, No 3 (2006)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

The objectives of this study were to obtain the best of method phosphate modification on sago starch for the making of fish ball of the Swangi fish (Priacanthus tayenus). The research was conducted in two experiments. The first one was a factorial randomized block design experiment with two factors: the types of composite sago starch (CSS made by blending of the natural sago starch (NSS) to the phosphate one (PSS) at various levels (100:0, 75:25, 50:50 and 25:75) and the ratio of the CSS to fish meat apportion of 5%, 10% and 15% respectively. The results indicated that the use of 0.07% STPP produced the best characteristics of phosphate starch intended for the making of fish ball. The PSS, at a moisture content of 9.86%, contains 72.12% starch, 33.07% amylose, 0.38% ash, water absorption index of 525.85%, water solubility index of 0.41%, viscosity of 1020 cps, gel strength of 2.38, Newton the residual phosphor of 0.03%, and the degree of lightness (L value) of 63.23. The best fish ball was obtained by the use of CSS, blended of 25 parts of NSS and 75 parts of PSS, and the fish meat at the ratio of 10%. The fish ball had the following characteristics: 79.42% moisture, 13.59% protein, 0.54% ash, 0.08% fat the texture of 0.014 mm/g/sec, 59.43% of water holding capacity. However, the color of the fish ball made up of PSS-containing CSS was slightly dull. Keywords: Sago starch, phosphate modification, fish ball, Priacanthus tayenus
Alkaline Treated Breadfruit (Artocarpus altilis) Based Composite Flour for the Making of Biscuit Lubis, Yanti Meldasari; Kumalaningsih, Sri; Susanto, Tri
Jurnal Teknologi Pertanian Vol 7, No 3 (2006)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

The objective of the research was to find out the optimum alkaline treatment to produce a light colour, starch-rich flour containing high levels of undamaged starch, intended for the making of a formulated biscuit. The research was divided into two experiments. First, a factorial randomized block design experiment with two factors: the concentration of NaOH (0.04%, 0.06%, and 0.08%) and the dipping time (15, 30 and 45 minutes). The second experiment was the use of the Linear Programming approach supported by the QSB to obtain the desirable biscuit formula. The results of the first experiment indicated that the breadfruit flour dipped for 45 minutes in the 0.08% NaOH solution was the best one. The treated flour at a moisture content of 6.63% contains 60.86% starch, 22.56% amylose, 3.25% protein, 6.26% fat, and the L value (degree of Lightness) of 74.9, water absorption index of 4.80 g/g, initiation of gelatinization temperature of 69.3 oC, gelatinization temperature of 80.9 oC, maximum viscosity of more than 2000 AU and undamaged granules. The best results of the second experiment was the biscuit formula containinq  31.76% breadfruit flour, 20% wheat flour, 13.03% red bean flour, which  meets  with  the  nutrition  requirement. The  texture  and  breaking force of the formulated biscuit was not significantly difference with the one of the biscuit made without the addition of breadfruit flour (the control), but has the lower L value. Moreover except  the crispness, the colour, aroma and the taste of formulated biscuit were found the best significantly different from those of the control biscuit. Keywords: Breadfruit flour, Alkaline modification (NaOH), biscuit, Linier Programming formulation
Application of Vacuum in Various Types of Porous Media for Cooling Kini, Hendrik; wardhana, Wardhana; Nurhuda, M.
Jurnal Teknologi Pertanian Vol 7, No 3 (2006)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Porous media, solid substances with a number of coids through which fluids may flow are effective to transfer heat from the medium to fluid. A research was conducted to assess the effect of vacuum in reducing temperature of various types of porous media. Three different particle types, i.e. Well rounded gravel (smooth surface), 2<f<3.6 mm; Coarse sand, angular surface 3.6<f<5 mm, and Fine sand f<2 mm were packed into a tubular plastic support, respectively, through which water was flown Each of these was treated with vacuum with P of -5, -52, -55, and -56 cm Hg for the well rounded gravel; with P of -42, and -10 cm Hg for the angular coarse sand and P of -40 cm Hg for the fine sand. The ability of lowering the temperature of porous media varied from 5 to 14 centigrade, and the time required were dependant mostly on the types of particles and vacuum levels. The fine sand was unable to reduce the temperature, while the angular coarse sand was able to lower the temperature by les tha 5 centigrade. On the other hand, the well rounded gravel particle with smooth surface was able to lower temperature form 26 oC to 13 oC. The levels of vacuum which determined the flow rates of the air and water passed to the porous media, however, did not show any significant effect to the reduction of temperature. It was found that the particle arrangement configuration in the support, which mostly affect the total surface area as well as the flow rate of air are likely to be the dominant factors in temperature lowering. Keywords: Porous media, vacuum, temperature lowering
Designing of an Agroindustrial Information System of Pasuruan Regency by the Use of USDP and UWE Effendi, Mas'ud; Effendi, Usman; Nurika, Irnia
Jurnal Teknologi Pertanian Vol 7, No 3 (2006)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

This research is addressed for designing an information system provides agro-industrial information of Pasuruan District. This research is conducted with descriptive method. The design’s steps use inception and elaboration steps of USDP and support of UWE at the elaboration. Models that yielded from the research are use case model, conceptual model, navigation space model, navigation structure model, presentation model, deployment diagram and component diagram. A descriptive type of research was conducted to design an agro industrial information system of Pasuruan Regency. The information covered general aspect of the regency, agricultural crops, processing of agricultural crops and their products, agriculture-based industries, and the relevant supporting industries, available reading materials and references, guest lists visiting the sites, and maps of profile of the districts in the regency. The design was carried out by the use of the Unified  Software Development Process (USDP) and Unified Modeling Language-based Web Engineering (UWE).The design of agro industrial information system developed was able to present use case model, conceptual model, navigation space model, navigation structure model, presentation model, deployment diagram and component diagram. However, it still needed further works to improve the features, especially to provide more details information such as other available agro industrial infrastructures, financial analysis for agro industries. Keywords: Information System, Agro-Industry, USDP, UWE
Feasibility Study with Emphasis on the Financial Aspect for Establishing A Middle Scale Biodiesel Industry by The Use of VCO Industry Waste Nugroho, Wahyunanto Agung; Nurhidayah, Titik; Ahmad, Ary Mustofa
Jurnal Teknologi Pertanian Vol 7, No 3 (2006)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

The objective of this research is to do a feasibility study with an emphasis on the financial aspect of the establishment of a middle scale industry if VCO as a primary product and biodiesel as a secondary product. The results indicated that the gross price for biodiesel is RP. 1754.43 and Rp. 7752.13 for VCO. BEP will be achieved at the production of 4655.3 liter of VCO and 2880.28 liter of biodiesel and a payback period of 11 months. The values of BC ratio, NPV and IRR were 4.71, Rp. 6680356346.00 and 259.24%, respectively and therefore the establishment of the industry was feasible. Keywords: VCO waste, biodiesel, feasibility study, industry
Identifications Characteristics of Land and Water Users Along The Brantas Riverbanks Rahadi, Bambang
Jurnal Teknologi Pertanian Vol 7, No 3 (2006)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Water supply and land along the Brantas Riverbanks should be functioned to conserve the river optimally. People behavior to land and water use affect their condition so that the users characteristics are important to be studied. This research was conducted to identify the characteristics of the land and water use activity and technique along the Brantas River.This research type is an explanatory research, using the data compiled from questionnaires that spreads to 3 zone categories (upstream, midstream and downstream). The sampling method is using Stratified-Classified Purposive Random Sampling. The Brantas riverbank’s land and water user characteristics were farmers owned less than 0.25 Ha, monthly income range from 750000 to 1500000 rupiahs, and believed not to change the land function from farming at least for the next 10 years. Keywords: Brantas riverbanks, user identification, characteristics

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