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agriTECH

agritech
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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 1,392 Documents

56 57 58 59 60

Characterization of Extra-and Intracelullar from Proliverating Yeast during Tempeh Production Sutardi Sutardi
agriTECH Vol 23, No 2 (2003)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Proliferating yeast species such as Endomycopsis burtonii, Candida diddensiae and Candida iropicalis, produced both extra- and intracellular phytases during tempeh (soaking of soybean) production. The enzymes were isolated from growth media and the cultured yeast. and partially purified by acetone fractionation. Extracellular phytase activities were higher than that of the intracellular enzymes. The extra- and intracellular phytases of E. burtonii., C. diddensiae and C. iropicalis acted over a narrow pH ranging at 3.2 - 4.8 and the maximum activity at temperatures between 45° - 70°C. Estimated Kâ€ž, values for extra- and intracellular phytases from yeast were within the range 0.5 - 3.1.x 10' M. The Vâ€ž,â€žâ€ž values were within the range 0.004 - 0.19 }mole P, liberated/min/m1 enzyme for the extra- and intracellular phytases of E. burtonii, C. diddensiae and C. iropicalis. The activation energy for hydrolysis of phytic acid by extra- and intracellular phytases of E. burtonii, C. diddensiae and C. iropicalis were calculated by,the Arrhenius equation being 7,100; 9,100; 13,00, 5,600, 7,100 and 21,700 cal/mole, respectively.

Isolasi dan Seleksi Lactobacillus yang Berpotensi sebagai Agensia Probiotik Siti Nur Purwandhani; Endang Sri Rahayu
agriTECH Vol 23, No 2 (2003)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Lactic acid bacteria are important in food fermentation, in producing antimicrobial substances responsible for food preservation, and in balancing the microflora composition in gastrointestinal tract which contributing many healthful benefits (as probiotic agent). Disturbance due to pathogenic bacteria colonization in intestine as well as sterilisation of intestine due to antibiotic ingestion can be overcome by consumption of probiotic lactic acid bacteria. The objective of this study was to isolate Lactobacillus which potential for probiotic agent from intestinal material of healthy infant baby. Isolation was conducted using peptone glucose yeast extract media added with 0,2 % oxgall at pH 5, followed by incubation at 37 0C for 48 hr. Identifications were carried out based on Grain, morphological, biochemical and physiological characters, peptidoglycan types and protein profile on SDS-PAGE. Selection of probiotic agents were on based their antagonisms toward pathogenic bacteria, their resistance to antibiotics, and their survival at different oxygen availabilities. Based on morphological, biochemical and physiological characters among 12 lactobacilli strains obtained during isolation, 8 of them were identified as Lactobacillus acidophilus and the rest as Lactobacillus reuteri. However based on protein profile, L. acidophilus group has two different profiles, the first, consist of 7 strains and the second, consists of one strain. All isolates inhibited the growth of pathogenic bacteria including Shigella sp., Escherichia coli sp., Escherichia coli FNCC 009 I, Proleus sp., Salmonella choleraesius JCM 3919, Staphylococcus aureus FNCC 0047, Vibrio parahaemoliticus JCM 2147, Bacillus cereus ATCC 0057 and Listeria monocytogenes ATCC 7644, as shown by the inhibition zone ranging from 0,5-8 mm. Eight isolates of L. acidophilus were not resistant to antibiotics tested, while 3 isolates of L. reuteri were not resistant to chloramphenicol, rifampin and ampicillin, however they were resistant to tetracycline and elkosin. At reduced oxygen and anaerobic conditions all the isolates grew well, but at aerobic condition the growth was relatively slow. Strains of Lactobacillus acidophilus could be used for probiotic agents.

Lactic Acid Bacteria in Fermented Foods of Indonesian Origin Endang Sri Rahayu
agriTECH Vol 23, No 2 (2003)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

In this study, about 194 lactic acid bacteria strains have been isolated from 21 kinds of fermented foods (plant materials and fish origin). These fermented foods were salted-fermented fruits, vegetables & fish; fermented raw cassava (gatot & growol); tape (cassava & glutinous rice); microbial starter cultures (ragi); and fermented soybean (tempe & moromi). Among these strains, 109 belong to genus Lactobacillus, which dominated by homofermentative Lactobacillus plantarum pentosus, 25 strains belong to Pediococcus (mostly P. pentosaceus acidilactici), 45 strains Streptococcus which mostly identified as Streptococcus thermophilus, 7 strains belong to Enterococcus, which further identified as E. faecium and 8 strains Leuconostos (Weisella) as Weisella paramesenteroides. Lactobacilli have been found in all fermented foods, pediococci in 11 kind of fermented foods both plant material and fish origin, while streptococci mostly found in fermented fish, as well as enterococci and Leuconostoc. Nine strains belong to Lactobacillus plantarum - pentosus complex from different fermented food samples have been determined their DNA-DNA homology to L. plantarum NRIC 1067 and L. pentosus NRIC 1069. Result of their homology to these strains shown that all these nine strains are identified as L. plantarum. Lactic acid bacteria from Indonesian fermented foods are dominated by Lactobacillus plantarum, followed by Pediococcus pentosaceus, and Streptococcus thermophilus.

Sistim Informasi Operasi Jaringan Irigasi untuk Modernisasi Pengelolaan Irigasi serta Peningkatan Proses Dialogis Petani dengan Pemerintah Wisnu Wardana; Sigit Supadmo Arief; Darmadi Darmadi; Anjar Suprapto
agriTECH Vol 23, No 2 (2003)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Managing irrigation water is not only distribute irrigation water .to the assigned field, but it is also include arranging the cropping pattern and scheduling in order to fit it to the availability of irrigation water. Cropping pattern and scheduling plan is the important things because each crop has its characteristics in water consumptions and on the other hand there is a limited water resources. There are three important factors in determining of cropping pattern and scheduling: (i) farmers need, (ii) service target and (iii) the ability of irrigation scheme. in the era of Government Regulation No 77/01, farmers participation in operation and maintenance (O&M) of irrigation scheme is an important things. The consequences is the managers of irrigation scheme have to negotiate these cropping pattern and scheduling plan as well as its water allocation to the farmers. The aim of this study is to prepare the tool to make easier during negotiation for determining the cropping pattern and scheduling. This tool is a computer program of information systems used for O&M of an irrigation scheme, and it is based on the availability of irrigation water, irrigation scheme performance, crop characteristics as well as its water consumption, market driven as well as the income offarmers.

Occurrence and Detoxification of Mycotoxinsin Food Sardjono Sardjono
agriTECH Vol 23, No 2 (2003)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Kajian Kehandalan Teknologi Irigasi Air Tanah untuk Usaha Tani Sistem Sorjan di Kabupaten Kulonprogo Muhjidin Mawardi
agriTECH Vol 23, No 2 (2003)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

A technology of ground water irrigation for sorjan farming system has been applied by farmers in Kecamatan Panjatan, Kabupaten Kulonprogo for years. The technology is simple and indigenous but there is no such infOrmation concerning it reliability and appropriateness. The aims of the study are to examine the reliability of the ground water irrigation for soda', farming Spiem and factors influence performance of the technology. The reliability is examined by the productivity of land and waler use, irrigation effectiveness and farmers income from the sorjan farming system. The study is conducted by survey and field observation method, includes physical characteristics of the sorjan land, ground water level, interval of wells ernd cropping pattern. Labour used for irrigation perday, time consumed for one irrigation, irrigation capacity perday and irrigation effectiveness are observed in the field during the working days. Crops production and irrigation cost, crops yield and famers income from sorjan farming are investigated through field survey. Two locations of sorjan farming are selected as the the sample locations for the study. The study concludes that the sorjan farming under crops rotation of rice and vegetable in the furrows and vegetable crops for all season on the ridges performs as a productive and adaptive land and water use for agriculture. The technology of ground water irrigation for the sorjan farming is considered as a reliable technology from the point view of adaptability to the local environment, water availability, irrigation effectiveness and farmers income per year from sorjan farming . Besides that. the technology is developed by the local farmers based on their wise and experiences to local circumstances and therefore, more appropriate and sustainable.

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

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

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

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

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 â€“ 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)

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Contact Name
Fiametta Ayu Purwandari

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fiametta@ugm.ac.id

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+6285712601130

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agritech@ugm.ac.id

Editorial Address
Faculty of Agricultural Technology, Universitas Gadjah Mada, Jl. Flora No. 1, Bulaksumur, Yogyakarta 55281, Indonesia

Location
Kab. sleman,

Daerah istimewa yogyakarta

INDONESIA

Abstract

Abstract

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Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Fiametta Ayu Purwandari

Contact Email fiametta@ugm.ac.id

Phone +6285712601130

Journal Mail Official agritech@ugm.ac.id

Editorial Address Faculty of Agricultural Technology, Universitas Gadjah Mada, Jl. Flora No. 1, Bulaksumur, Yogyakarta 55281, Indonesia

Location Kab. sleman, Daerah istimewa yogyakarta INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Fiametta Ayu Purwandari

Contact Email
fiametta@ugm.ac.id

Phone
+6285712601130

Journal Mail Official
agritech@ugm.ac.id

Editorial Address
Faculty of Agricultural Technology, Universitas Gadjah Mada, Jl. Flora No. 1, Bulaksumur, Yogyakarta 55281, Indonesia

Location
Kab. sleman,

Daerah istimewa yogyakarta

INDONESIA