cover
Contact Name
Rachma Wikandari
Contact Email
rachma_wikandari@mail.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
agriTECH
ISSN : 02160455     EISSN : 25273825     DOI : 10.22146/agritech
Core Subject : Agriculture,
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).
Articles 6 Documents
Search results for , issue "Vol 24, No 3 (2004)" : 6 Documents clear
Pediococcus acidilactici F-11 Penghasil Bakteriosin sebagai Agensia Biokontrol Escherichia coli dan Staphylococcus aureus pada Sayuran Segar Simpan Dingin Endang Sri Rahayu; Eni Harmayani; Tyas Utami; Kejora Handarini
agriTECH Vol 24, No 3 (2004)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2344.649 KB) | DOI: 10.22146/agritech.13456

Abstract

Our survey indicated that fresh vegetables contained. high population of microorganisms including pathogenic Staphylococcus aureus. Washing procedures, including the addition of sanitizes to the wash water have not been effectively in reduction of the number of microorganisms. Currently, there is interest in possible use bacteriocin producer of lactic acid bacteria as biocontrol agents to ensure safety of minimally processed, refrigerated (MPR) foods which are not acidified, including fruits and vegetables. Our previous result, indicated that Pediococcus acidilactici F-11 (PAF-11) produced bacteriocin with wide spectrum activity. Objectives of this research was to study the potency of PAF-I 1 as biocontrol agent to inhibit the growth of pathogenic bacteria occurred in ready to eat fresh vegetables, i.e., paprika, lettuce, carrot. The results showed that PAF-11 was able to inhibit the growth of naturally present coliform and Staphylococcus significantly, as well as that of tested bacteria of E. coil and S. aureus which were inoculated into paprika and carrot. PAF-11 was able to grow at these two vegetables, and their population were increased about I log cycle. Bacteriocin activity produced by PAF-11 was positively detected from these two vegetables inoculated with these bacteria. However, there was no inhibition activity of PAF-11 against naturally present coliform and Staphylococcus, as well as inoculated E. coil and S. aureus on lettuce. Bacteriocin activity produce by PAF-11 was also not detected in this vegetables. Conclusion of this study, Pediococcus acidilactici F-11 could be used as biocontrol agents in paprica and carrot.
Ekstrak Air Jahe (Zingiber officinale Roscoe) Menghambat Akumulasi Kolesterol pada Makrofag Aisyah Tri Septiana
agriTECH Vol 24, No 3 (2004)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1144.653 KB) | DOI: 10.22146/agritech.13458

Abstract

Water extract of ginger rhizomes has been reported to protect low density lipoprotein (LDL) oxidation. We investigated the effect of these extract enrichment on the prevention of cholesterol accumuation in macrophage. Water extract of ginger rhizomes was suplemented on LDL isolate (2150 idg/m1 LDL), oxidized with CuSO4 and incubated on macrophage culture. These extract also was suplemented on macrophage culture before incubated with LDL and FeCl2. The corresponding esterified cholesterol accumulation was analized from macrophage culture. Result showed that water extract of ginger rhizomes suplementation on LDL isolated before CuSO4 oxidation and on medium macrophage culture before incubation with LDL and FeCl2 reduced 69,07 % and 43,21 % of esterified cholesterol accumulation from macrophage, respectively. This research has shown that water extract of ginger rhizomes is capable of prevention cholesterol accumulation in macrophage.
Simulation of Root-Matted Cutting by Use of Distinct Elemet Method Bambang Purwantana
agriTECH Vol 24, No 3 (2004)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2860.481 KB) | DOI: 10.22146/agritech.13459

Abstract

A numerical technique, the distinct element method (DEM.l, was used to simulate the mechanical behavior of root-matted soil. The conventional DEM was modified with introducing a tensile parameter on the mechanical relationship between the DEM elements. The validity of the modified model was investigated by conducting an experiment in which root-matted soil is cut by a blade. The simulation results indicate the appropriateness of the modified DEM The effects of tension from the experimental results could be simulated by the DEM. This study has provided new and valuable information on the behavior of soil and root at cutting process.
Aspergillus Proteolitik Indigenous dari Koji dan Kemampuannya Mendegradasi Aflatoksin B1 Sardjono Sardjono; Endang Sri Rahayu; Sri Raharjo; Kapti Rahayu Kuswanto
agriTECH Vol 24, No 3 (2004)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1733.858 KB) | DOI: 10.22146/agritech.13461

Abstract

Legume and cereals are always exposed to the danger of fungal contamination. Among such fungi, some species of the genus Aspergillus are potential of aflatoxins producer. Aflatoxin BI (AFB1) which is the most carcinogenic mycotoxins , known very stable under cooking condition and other processing factors. The removal of AFB1 by degradation or detoxification is critical to reduce risk to human health. Microbiological degradation is a promising method for AFB1 degradation compared to others. The aim of this research was to isolate the proteolytic Aspergillus strain from "koji" and to determine its ability to degrade AFB). Out of 18 strains of Aspergillus, 16 strains were found proteolytic and only 5 strains had no afiatoxigenic properties, but all of them were able to degrade AFB1. There were no spesific pattern of the rate of AFBI degradation. Strain of KKB4 was identified as Aspergillus oryzae, that possess the highest ability to degrade AFB1. Two kind of substances were formed after degradation which were more polar than AFB1. The rate of AFB) uptake by Aspergillus oryzae KKB4 was similar with that of mycelia! growth. Aflatoxin BI inhibits mycelium growth, vesicle and conidial head formation.
Sebaran Kinerja Daerah Irigasi Pasca Penyerahan Pengelolaan Irigasi Murtiningrum Murtiningrum; Wisnu Wardana; Ni Nyoman Sulastri
agriTECH Vol 24, No 3 (2004)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2133.808 KB) | DOI: 10.22146/agritech.13463

Abstract

One among the policies in Irrigation Management Policy Reform (IMPR) is the Irrigation Management Transfer (IMT). Through the IMT, farmers in Water Users' Association (WUA) manage their own irrigation systems. The IMT let farmers to diversify their farming system to achieve farmers' welfare. The diversification results in in the variation of planting pattern in an irrigation system. The variation is bigger if market plays a role in crop choice. Therefore, the assumption that an irrigation system has a uniform performance throughout the system is no longer valid. This paper aims to examine the distribution of an irrigation system managed by farmers. The system chosen as sample was Mejing Irrigation System in Banjul, Yogyakarta. The performance was assessed by using adequacy and water delivery performance. The spatial distribution of Mejing Irrigation System is mainly affected by irrigation operation pattern as well as condition and serviceability of irrigation network Spatially, the tertiary blocks located in the head receive more water than other tertiary. blocks in the tail.
Kajian Perilaku Pengeringan Sari Buah dengan Pengering Semprot Searah Ansar Ansar; Suhargo Suhargo; Budi Raharjo
agriTECH Vol 24, No 3 (2004)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1084.112 KB) | DOI: 10.22146/agritech.13464

Abstract

This study aimed to examine the behavior of concurrent spray drying of fruit juice on various inlet temperature of the drying air and atomization air pressure, The temperature of inlet drying air ranged approximately from 115 °C and 135 °C. The atomization air pressures were varied from 1,8593; 1,8746; and 1,9245 Pa. The data of this study consist of predicted and observed data. Observed data obtained from laboratory experiment which included the distribution of drying air temperature as along the axial distances and the average moisture content of final product. Predicted data obtained to simulate models based on three mathematical models consists of mass, momentum, and energy balance equation. The mathematical models were employed to predict the temperature of drying air distribution and the average of moisture content offinal product. The results of the study showed thatj the mathematical models represent of the behavior of fruit juice drying using concurrent spray dryer. On the same material bait; number, size, and droplet distribution were changed on the change of atomization air pressures and air temperature drying. The higher was the atomization air pressure and the air temperature which were used, the greater was the droplet which were product.

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