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Rachma Wikandari
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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 21, No 4 (2001)" : 6 Documents clear
Food Recall Protecs Consumers from Consuming Hazardous Meat and Poultry Products : A Review on 1995-1999 Recall Cases from FSIS-USDA Sri Raharjo
agriTECH Vol 21, No 4 (2001)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1954.156 KB) | DOI: 10.22146/agritech.13578

Abstract

A recall is intended to remove meat or poultry from commerce when there is reason to believe that it may be injurious to helath, unfit for human consumption, adulterated, or incorrect labeling. The objective of this study was to evaluate Recall Cases during the period of 1995-199 as reported by the USDA-FSIS. During the period of 1995-1999, there were approximately 197 cases of recall were identified which consisted of 85% categorized as Class 1 and remaining 15% as Class II. More than 50% of the recall were warranted due to the pathogenic bacteria contamination and only a small proportions were due to the presence of extraneous material, drug residues, inadequate processing, and incorrect labeling. At least 80% of the bacterial contamination were associated with L. monocytogenes and E.coli O157:H7. On the average more than 2 million pounds of defective or hazardous meat products were withdrawn from commerce and some of the recall resulted 100% product recovery. This suggests that the firms respond positively to the program and as a result consumer's safety can be enhanced.
Klasifikasi Tingkat Kematangan dan Kemasakan Buah Durian dengan Model Neural Network Amin Rejo; Hadi K. Purwadaria; I Wayan Budiastra; Suroso Suroso; Slamet Susanto; Yul Y Nazaruddin
agriTECH Vol 21, No 4 (2001)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1138.713 KB) | DOI: 10.22146/agritech.13583

Abstract

This study was aimed to develop the model to predict the maturity and ripeness of durian based on its physical and chemical characteristics using neural network. The physicochemical and acoustic characteristics measurement was fed into the model as the inputs, which provided the levels of maturity and ripeness as the output of the model. The results suggested that the physico-chemical properties and the acoustic charcteristic decreased with the increase of both maturity and ripeness level of durian. The total solid soluble, the water content and the total sugar increased according to the fruits maturity. The total acids increased in the beginning of durian maturing process and then decreased when the maturity and ripeness level reached the mature-over ripened stage. Data training were done by model of neural network: model 4 output, with various node in the hidden layer 4, 6, 8 and 10 nodes. The results recommended that the best model to be applied was model 4 output with 4 nodes in the hidden layer and iteration 1000 and 5000 with the model accuration 87.5 % - 100%.
Ketahanan Bakteri Psikotrofik dari Produk Perikanan Segar terhadap Bakteriosin Amir Husni; Iwan Y.B. Lelana; Endang Sri Rahayu
agriTECH Vol 21, No 4 (2001)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1281.948 KB) | DOI: 10.22146/agritech.13585

Abstract

Fresh fishery products are highly perishable and susceptible to spoilage caused by rapid growth and activity of bacteria. Psychotropic bacteria are the major microorganisms responsible for spoilage when these products stored in ice or under refrigeration. The purposes of this study were to isolate psychrotrophic bacteria from fresh fishery products and to evaluate its resistance to bacteriocins. Fresh fishery products (kembung fish, shrimp, shellfish) samples were obtained from Demangan and Kranggan traditional market. Colony count methods were used to enumerate bacteria, whereas isolation and identification of bacteria was performed by the identification method of Lahallec and Colin (1995). The identification conducted were covering Gram staining and cell morphological examintaion (cell form), motilitym presence or absence of an oxidise, mode of glucose utilization, and capacity for glucose or lactose fermentation, H2S production, and gas production. The resistance assyas by bacteriocin were carried out using agar diffusion method. Seventeen isolates were found abd they were classified as Pseudomonas, Xanthomonas, and Flavobacterium/ Cytophaga. The results show that psychrotropic bacteria resistance to supernatant of lactic acid bacteria and nisin.
Isolasi dan Seleksi Jamur Perusak Karet dari Berbagai Sumber Kontaminasi Potensial Maria Ulfah; Purnomo Darmadji; Retno Indrati
agriTECH Vol 21, No 4 (2001)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1623.239 KB) | DOI: 10.22146/agritech.13586

Abstract

Ribbed smoked sheet (RSS) is Natural rubber product, mainly consist of Cis- 1,4 polyisoprene and relatively resistant to microbial decomposition with many other natural polymer. Natural rubber contains a minimum of 90% rubber hydrocarbon, plus small amounts of protein, resins, fatty acid, sugars and minerals. It is also possible that microorganisms using impurities as their carbon and energy sources could deteoriorate the rubber. Fungi which potentially deteriorate rubber eventually was accidentally taken by raw material areas, raw materials, processing steps, product and old RSS. Therefore it is necessary to isolate fungi and to evaluate potential fungi which deteriorated rubber. The results showed that 158 strains were isolated from various contaminant sources. From these 10 strains were from skin of rubber wood, 7 strains from tappinglump, 16 strains from spoutlump and 10 strains from cuplump, 47 strains from earth around rubber wood, 5 strains from fresh field latex, 3 strains from ammoniated field latex, 12 strains from wet sheet, 7 strains from air in wet in sorting room, 12 strains from RSS product, 11 strains from old RSS product (7 years old namely SU) and 8 strains from wet SU (1 month old namely SDU) Twenty four strains were selected as potential deteriorated rubber fungi. These 24 strains were classified into 10 genera (Aspergillus, Cladosporium, Emericella, Fusarium, Mucor, Neosartorya, Penicillium, Pestalotiopsis, Cladobotyrum, Pithomyces), and 4 unidentified strains (LM188, T55, SS37, T67).
Pola Penyebaran Fruktosa, Glukosa, dan Sukrosa pada Bagian-Bagian Umbi Bulbus Berbagai Kultivar Bawang Bombay Suharwadji Sentana
agriTECH Vol 21, No 4 (2001)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (891.427 KB) | DOI: 10.22146/agritech.13587

Abstract

This study was desiged to find out the distribution patterns of fructose, glucose and sucrose of Southport White Globe, early Lockyer White and White Spanish onions. Ten onions bulbs were each divided into three parts : top, middle, and bottom. Each part was then divided into three layers of scales : outside, middle, and centre scales. The idividual sugar contents of each part were then determined. The results showed that fructose content at the tops of the three onion cultivars tended to be lower towards bottom of the bulbs at different rate, depending on the layer of scales and cultivars. On the other hand, fructose contents of the outside towards the centre and glucose and sucrose content of the bulb parts of the three cultivars showed no special distribution patterns.
Kajian Kinerja Usaha Pelayanan Jasa Alat dan Mesin Pertanian (UPJA) : Kontribusi dalam Strategi Pengembangan Alat dan Mesin Pertanian (Studi Kasus UPJA di DIJ) M. Rizki Yogatama; Sunarto Ciptohadijoyo
agriTECH Vol 21, No 4 (2001)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2193.581 KB) | DOI: 10.22146/agritech.13588

Abstract

The objective of this study was to predict profit level of UPJA. It was also to discover technical and non-technical factors and understand a social-economical effect of the uPJA toward increasing farmer income and use of agricultural machinery and equipment. The sample was 28 KSO-patterned of UPJA, and farmer as user of UPJA. Data was obtained by distributing questioner, conducting direct interview with respondent and refering relevant literature. The data determined description of UPJA management in the DIJ and then it was analyzed through technically, economically, and socially approached. Technical analysis indicated that tractor capacity was high, while thresher and RMU were low. Economical analysis indicated that tractor and thresher were in not economical, because the NPV was less than 0 and BCR was less than 1. Whereas on RMU there were two samples, that can achieve NPV more than 0, and BCR more than 1. Social analysis indicated that actually farmers received and needed the presence of the technology, although the appreciation on agricultural machinery and equipment service was still low. As a whole, UPJA activity had not been good and given benefit. It needed agricultural explanation more intensive to the farmer on importance of agrocultural mechanization. It also needed to raise fee so the operating loss could be decreased.

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