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Rachma Wikandari
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Faculty of Agricultural Technology, Universitas Gadjah Mada, Jl. Flora No. 1, Bulaksumur, Yogyakarta 55281, Indonesia
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agriTECH
Published by Universitas Gadjah Mada
ISSN : 02160455     EISSN : 25273825     DOI : 10.22146/agritech
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Agritech with registered number ISSN 0216-0455 (print) and ISSN 2527-3825 (online) is a scientific journal that publishes the results of research in the field of food and agricultural product technology, agricultural and bio-system engineering, and agroindustrial technology. This journal is published by Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta in colaboration with Indonesian Association of Food Technologies (PATPI).
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 6 Documents
 1 
Search results for , issue "Vol 23, No 1 (2003)" : 6 Documents clear
Transformasi Sistem Irigasi Subak yang Berlandaskan Konsep Tri Hita Karana Wayan Windia; Suprodjo Pusposutardjo; Nyoman Sutawan; Putu Sudira; Sigit Supadmo Arief
agriTECH Vol 23, No 1 (2003)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2402.853 KB) | DOI: 10.22146/agritech.13519

Abstract

Subak irrigation system beside as an appropriate technological system, but as a cultural system as well. This fenomenon indicate that basically subak irrigation system is a technological system that has been developed as a part of cultural society. Because of subak system is viewed as a technological system, so this system has an ability to be transformed. Meanwhile, limitation of the ability of subak irrigation system to overcome the ezireem conditions, so its conditions basically to be solved through the harmony and togetherness, due to the Tri Hita Karana (THK) principles as a basic of subak system. Futhermore, through inverse technique, can be seen how far the ability of subak system can be transformed. And then, through Fuzzy Set Theory can be seen the dominance or ranks of the all elements of subak system, which is also as a consideration on the transformation process. (THK) principles as a basic of subak system. Futhermore, through inverse technique, can be seen how far the ability of subak system can be transformed. And then, through Fuzzy Set Theory can be seen the dominance or ranks of the all elements of subak system, which is also as a consideration on the transformation process.
Model Dinamika Ketersedian Pangan - Studi Kasus : Ketersediaan Beras di Wilayah Madiun, Jawa Timur Tri Purwadi; Lilik Sutiarso; Putu Sudira
agriTECH Vol 23, No 1 (2003)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2079.853 KB) | DOI: 10.22146/agritech.13520

Abstract

In order to predict and determine level of food security in a certain area, a dynamic system approach model of food supply-demand planning that based on regional resources was developed. The model was run using both primary and secondary data, which were gathered in the study area, Madiun Region, East Java Province. One of food crop comodities that was focused for simulating the model was rice. To validate the developed model, one scenario was selected, there were no changing of planting or harvesting area and rice productivity level, also rice imported from other areas (countries) was zero for five next years. The simulation results indicated that the level of actual food security (1.29 - 1.27 years) was higher than government's level (1.25 years), though the rice market price decreased gradually.
Aplication of Value Engineering in Bamboo Chair Product Design Development for Foreign Market Wahyu Purwanto
agriTECH Vol 23, No 1 (2003)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1586.777 KB) | DOI: 10.22146/agritech.13521

Abstract

In this research. bamboo chair design development was based on Value Engineering approach, which consisted of three stage, information stage as consumer needs identification stage. creativity stage as concept building stage and analyzed stage as concept judgment stage. The development aspects in this research were related to aesthetic aspects _function especially shape and color of chair. The alternatives were developed based on variety of shape and bamboo. The strengths and the weaknesses of each alternative were analyzed in relation with other aspects before they were used in concept building. There were 14 product concepts as concept building stage output. The best concept is the concept with highest value. Value was defined as function per cost. In this research, function was product performance that was appreciated by consumer while cost was variable production cost, fared cost was not included because it was assumed equal for each concept. Based on that equation, the best product concept was the bamboo chair in peg appendix, square seat square back of chair in incline position, straight-arm of chair and not connected with front leg of chair, and the material is opus bamboo. The value of this alternative was 3.89.10, while market product was 2,90.10- 3, it means there was an improvement.
Kajian Alat Pemipil Jagung di Tingkat Petani Sudirman Umar
agriTECH Vol 23, No 1 (2003)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1356.387 KB) | DOI: 10.22146/agritech.13524

Abstract

In general, shelling activity has been carried out mechanically by corn-sheller. Due to lowest capacity and high value of broken grain, manual shelling has been left. Post harvest processing needs mechanical technology input like corn-sheller to reduce broken grain and emphasize the lost. Efficient corn sheller and reached to be developed. The object study of two corn-sheller was conducted in May 2000 at center corn production. Tanah Laut regency South Kalimantan was studying technical and economical feasibility of corn-sheller on farmer level. The study has used experiment and mean score method with four replications. For each the machine testing using BIN-2 variety. 200 kg/testing with 17 – 23% wet basis moisture content was use in this experiment. Financial analysis has used for calculating investment cost, break event point and pay back period, net present value, benefit cost ratio and internal rale of return. The result showed that performance of PIJAG-288 corn-shelter has higher efficiency value and pure grain percentage and also lower percentage of mixed and broken grain. Base on shelling cost Rp. 15.00. would be obtained unit cost Rp. 6,57/kg, break event point 51.94 ton/year. net present value (NPV) as Rp. 1L66 million, with 17.57% of internal rate of return (IRR). Base on financial analysis especially in cost production and NPV, PIJAG-288 more benefit than AGR-920. It has pay back period .(PBP) more less than one year. Advanced analysis using economic feasibility analysis indicates technology ofcorn-sheller to applied with B/C ratio 1.86 (pijag-288) and 1.48 (agr-920)
Pengaruh Cara Ekstraksi dari Daun Janggelan (Mesona palustris BL.) dengan Perebusan dan Pengempaan terhadap Sifat Gel Bangun P. Nusantoro; Haryadi Haryadi
agriTECH Vol 23, No 1 (2003)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1549.884 KB) | DOI: 10.22146/agritech.13527

Abstract

A study on the effect of extraction methods on fanggelan leaf by boiling and pressing has been conducted. langgelan leaf was extracted for gel forming component by: boiling, pressing and combination of boiling and pressing. A 100 ml filtrate obtained front each extraction method was Mixed with 3 g suspension of tapioca and boiled with constant agitation. The mixture was then allowed to cool to room temperature and form a cincau gel. The gel was characterized for breaking strength and syneresis in addition to the yield that was determined for each extraction method. The extraction method with the highest yield was continued to optimize using respond surface methodology (RSM) for the best condition. The results indicated that the yield of extraction methods were 6,06% for pressing; 15,29% for boiling; 18,96% for boiling and pressing; and 22,13 % for pressing and boiling. The best condition for pressing and boiling extraction method was 275,4 kg/crn2 (pressure) for 3,2 minutes (time) which resulted gel 33,98 N (breaking strength).
Hubungan antara Ketuaan Durian CV Sunan dengan Sifat Fisiknya Bambang Haryanto; S Royaningsih
agriTECH Vol 23, No 1 (2003)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1302.461 KB) | DOI: 10.22146/agritech.13528

Abstract

The objective of this research is to determine relationship between durian maturity of Sunan cultivar and its physical properties. Twelve mature Sunan durians of 100 ± 3 days after fullbloom and 12 immature durians of 70 ± 3 days after fullbloom were used to bedetermined their specific gravity and physical properties. Specific gravity was measured by water displacement and physical properties was visualy identified. After the measurement of specific gravity, all durians were opened (0 measure firmness and total soluble solid (TSS). Durians pulp firmness were measured using Rheometer CD-300 DX (kg unit) while total soluble solid of durians pulp using a digital refractometer Atago PR-201 (% brixs). The result indicated that Sunan durians with oval shape, weight 1,53 1-0,45 kg, diameter 16.0 1-3,0 cm, length 19,0 ±4,0 cm and can be cracked or opened. The specific gravity immature durian was 0,99 ±0,08 gicrn'' and mature durian was 0,89 0,024 g/cm3. The relationship between specific gravity versus firmness of durian pulp, and specific gravity versus total soluble solid are significant as indicated by R2 = 0,89 and R2 = 0,88 respectively. The firmness of immature durian pulp is bigger than 3 kg and the total soluble solid is less than JO % brit

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