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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

91 92 93 94 95

Makanan Fungsional, Konsep dan Peraturannya Mary Astuti
agriTECH Vol 17, No 4 (1997)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Perlu adanya persepsi yang sama tentang apa yang dimaksud dengan makanan fungsional yang dipopulerkan Jepang sebagai FOSHU yang berupa makanan biasa bukan pit ataupun kapsul, dan merupakan makanan yang dirancang sedemikian rupa sehingga fungsi fisologis dapat lebih dioptimalkan terutama untuk mencegah secara dint terjadinya penyakit tertentu. Peraturan perlu segera dipersiapkan baik yang berlaku secara nasional ataupun internasional. Indonesia telah mempunyai Undang-undang Pangan tetapi belum ada peraturan yang mengatur tentang makanan fungsional. Makanan fungsional nampaknya mempunyai prospek yang cukup balk untuk dikembangkan di Indonesia yang dapat digali dart berbagai sumber bahan makanan yang seiama ini dipercaya masyarakat dapat menjaga kesehatan

Pola Respirasi dan Senyawa Flavor Selama Tahap Pemasakan Buah Salak Pondoh Tranggono Tranggono
agriTECH Vol 18, No 2 (1998)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Studies on respiration pattern and flavor compound changes 'during maturation stage in the development of snake fruit (Salacca edulrs Reinw cultivar Pondoh) were carried out at picking times of 4.5, 5.0, 5.5, 6.0 and 6.5 months after pollination. At each time, samples were drawn for determinations of edible portion, moisture; respiration rate, ester and carbonyl compounds as well as their flavor profiles by gas liquid chromatography. Result showed that the development of maturation degree gives rise to an increase in the relative percentage of edible portions. The snake fruit displayed a non-climacteric pattern of respiration. During maturation stage from 4.5 until 6:5 months after pollination, the fruits exhibited a decrease in ester and an increase in carbonyl compounds. However, fruits picked at 6.5 months after pollination revealed an additional in respiration rate as well as ester content and a diminishing in carbonyl compounds. These may be due to stress condition caused by initial break down of edible tissues. Flavor profile chromatograms which were obtained from head space analyses, showed that changes in volatile compounds in term of type and their relative percentages occur during maturation.

Isolasi Bakteri Penghasil Enzim Lipase Penghasil Alkali dari Kulit Hewan V.S. Pertiwi Rumiyati; Retno Indrati
agriTECH Vol 18, No 2 (1998)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Twenty seven bacterial strains isolated an a medium containing 0.50% palm oil as substrate and 0.015% spirit blue as an indicator from several raw hides of chicken, goat and cow showed an extracellular lipase activity. Of these strains, 10 were higher lipase producers. Lipases produced from five of these 10 isolates were stable on alkaline conditions, ranging from pH 8.0 to 11.0. Furthermore, activity of these enzymes was not inhibited by the presence of non-ionic, cationic nor ionic surfactants at concentration of 0.05% or 0.10%. Conversely, some of these surfactans could even activate the enzyme.

Pengaruh Rasio Bungkil Kedelai dan Kacang Gude Terhadap Karakteristik Tahu B.A. Susila Santosa; Narta Narta; S. Widowati
agriTECH Vol 18, No 2 (1998)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Soybean oil cake and pigeonpea were the alternatives vegetable protein sources besides soybean. Their high protein content has not been considered yet in the food processing technology especially for tofu product. This study evaluated ratio of soybean oil cake to pigeonpea used in tofu processing, tofu characteristics and recovery, anti nutrition content and organoleptics characteristics of tofu. Ratio of soybean oil cake to pigeonpea used in this study were 100:0; 90:10; 80:20; 70:30; 60:40; and 50:50. The result showed that ratio of soybean oil cake to pigeonpea effected tofu characteristics and recovery. Ratio 100:0 gave the best result either in nutrition (protein) content or recovery, but the tofu contains the highest anti nutrition too. Tofu made from material with ratio of 90:10 and 80:20 had the same characteristics and better than others. Organoleptically, tofu made from material with ratio 100:0; 90:10 and 80:20 were valued higher than others. This study needs to be developed in order to find the best processing technique and condition in larger scale.

Koefisien Perpindahan Panas Permukaan Bola dengan Aliran Udara Paksa dalam Pipa B. Rahardjo; B. Suratmo; Sukarjo Sukarjo
agriTECH Vol 18, No 2 (1998)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Handling and processing of agricultural products mostly consist of heat transfer. Commonly the heat process of agricultural products is conducted in closed systems with air forced circulation. The process of heat transfer is significantly controlled by the values of the coefficient of surface heat transfer. Therefore the objectives of the research were to determine the pertinent parameters affecting the coefficient of heat transfer of sphere in forced air circulation and then to develop the mathematical relationship of those parameters. The mathematical relationship was determined using dimensional analysis composing dimensionless numbers such as Nusselt, Reynolds and size ratio. The coefficient of surface heat transfer were determined by heat capacitance method and analytical approaches using samples of spheres made from copper and wood respectively. The results indicate that the relation of the dimensionless groups were significant. The coefficient of surface heat transfer appropriately can be expressed using the pertinent parameters.

Pengkajian dan Penanganan Daerah Aliran Sungai Bagian Hulu dengan Pendekatan Model ANSWERS, Bagian 1 : Prediksi Air Limpasan Suharyono Suharyono; Putu Sudira; Sukirno Sukirno
agriTECH Vol 18, No 2 (1998)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

The Area Nonpoint Sources Watershed Environment Response Simulation (ANSWERS) model as the distributed hydrologic model for the simulation of 10 scenarios of land uses is presented. The model is based on the assumption that at any point of watershed spatial, runoff volume is closely related to the hydrologic and physiographic processes such as, rainfall intensity, infiltration rate, soil moisture content, soil behaviour, land slope and vegetative cover. The discharge hydrograph of the model gave a good result and was statistically significant to the observed hydrograph.. Among the ten scenarios of land uses, the lowest peak discharge of 7.7. m3/second was obtained at the simulation of 80% of forest land, meanwhile the highest peak discharge of 33.36 m3/second was obtained when there was no forest land at the study area.

Pencemaran Pangan Oleh Jamur, Potensi Bahaya dan Pencegahannya Sardjono Sardjono
agriTECH Vol 18, No 2 (1998)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Perubahan Lingkungan Fisik Tanah Sawah Dengan Penambahan Bahan Organik Pada Berbagai Cara Pemberian Air Harsono Harsono
agriTECH Vol 18, No 4 (1998)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

The problem faced by the flooded rice field are the deficiency of nitrogen, phosphorus and potassium, the toxic of Fe, Mn, Al, and Bo to plant. When the puddled soil are dried the structure of soil becomes massive. Hard consistency caused the roots of crop do not able to penetrate the soil. To overcome those problems, the research of the addition' of organic matter into the soil under various method of irrigation was conducted. The experimental design strip split plot design was used. The treatments were the method of irrigatiOn as horizontal factor (a), duration of organic matter incorporated into the soil as vertical factor (b). The kind of organic matter as subplot factors (c). The crops to be tested were rice (IR - 36) and soybean. The field experiment was carried out in KP4 UGM experiment station, Berbah, Sleman Yogyakarta. The results of this experiment indicated that the bulk density increased with time from the plowing up to the harvest. However, the hydraulic conductivity of soil decreased. The lowest bulk density was in the plots buried by straw (0.85 gr/cm3) and the highest was buried by the leaf of gliriside (Glericidia sepium) (0.96gr/c). The addition of organic matter into the soil increased nitrogen, phosphorous and potassium. The residue effects of those treatments on soil grown by the soybean indicated that the soil aggregate of 2 mm increased by 40% in the plots buried by the straw. The highest yield of rice was on the plots buried by leaf of gliriside under the intermittent irrigation with the yield as higher as 6.53 ton/ha.

An Expert System For Comprehension of Forage Crops and Utilization on Pasture System Mongkon Ta-oun; Mohamed Daud; Mohdzohadic Mohdzohadic; Shamshudin Jusup
agriTECH Vol 18, No 4 (1998)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

The knowledge based of expert system for comprehension of forage crops and utilization on pasture system could be extracted from domain experts and established literatures for preparing an expert system skeleton. This system was developed by CLIPS program. The skeleton of the expert system is divided into four main parts; information, pasture management and prediction. The introduction part will help user to get general information of forage crops and the important environmental factors of many processes so that user can understand the process components in pasture establishment. The pasture management part explains the principle of managing the pasture for sustainable utility and gaining continuously and sufficiently high yield of crops and animal production. The last part is prediction part, to illustrate principle of factors and algorithms using in decision making / prediction the selection of forage crop varieties on pasture establishment; furthermore, in this part has model for predicting groundwater pollution vulnerability of the existing environment of pasture which will be established.

Optimasi Model Persediaan Produk Makanan Ternak Pada Tingkat Distributor di Propinsi Daerah Istimewa Yogyakarta Kuncoro Harto Widodo
agriTECH Vol 18, No 4 (1998)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Inventory management is a general problem in manufactures, service companies, government institutions included feedmill distributor. Inventory policy in those institutions are determined by several objectives which the main are minimizing the total cost or investment inventory, the consumer satisfaction and maximizing the output efficiency. Structural problems related with feedmill inventory consists of total cost inventory, order quantity and reorder point. Economic Order Quantity (EOQ) model is one of tools in order to solve problems above, in detail this tool is used to optimize feedmill inventory in the distributor level, especially in the feedmill manufacturing product, the milled corn and the rice sifting components. The result of the research shows that by using the EOQ model, there is a total cost inventory reduction, such as the feedmill manufacturing product decrease from 8,046,778 rupiahs to 1,890,865 rupiahs, the milled corn component from 1,785,721 rupiahs to 103,310 rupiahs and total cost inventory for the rice siftings component decrease from 598,812 rupiahs to 96,686 rupiahs. Based on the final result above, it is summarized that the EOQ model instrument minimized the total cost inventory in feedmill product on the distributor level.

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Fiametta Ayu Purwandari

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+6285712601130

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agritech@ugm.ac.id

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

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Daerah istimewa yogyakarta

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Abstract

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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