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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 22, No 1 (2002)" : 6 Documents clear
An Information Support System for Identifying Farming System Part I : Development of A Computer Program Package Lilik Sutiarso
agriTECH Vol 22, No 1 (2002)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1759.669 KB) | DOI: 10.22146/agritech.13572

Abstract

This study was undertaken to develop a computer program package for identifying a farming system that was focused in the water availability analysis, the optimizing of agricultural power and selected equipment and the senditivity analysis. The computer programs for all models were developed and written in FoxBASE command language. Three databases were obtained from the farm survey i.e.; climate, crop and power. All these databases can be appended, edited, deleted or displayed by the users through a menu of database mahagement system (DBMS). They were used to evaluate the utility of the computer programs as input data. The infromation system calculates the amoun of monthly water surplus and deficit, the optimum number of agricultural power (animal or power tiller) and its matching implement required and also change in the net return of crop production system due to the change of input variables such as crop price, yield, and production material cost. The system output for each analysis can be presented in three options by screen, printer and file that can be accessed to another language.
Identification of Wheat Flour Segmentation Based on Household Consumer's Preferences Ivonny Erlandharosi; Wahyu Supartono; Didik Purwadi
agriTECH Vol 22, No 1 (2002)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1799.761 KB) | DOI: 10.22146/agritech.13573

Abstract

The aim of this study research was to indentify wheat flour segmentation based on household consumer. Samples of this research were CK, KB and SB. The research method was "Stratified Random Sampling". Respondents for questionaire were chosen from consumers who were divided into three level based on welfare society of BKKBN Yogyakarta called higher, middle and lower consumer welfare. The three different level society had different decision to buy products for their need. The segmentation due to the consumer need was needed to homogenize their needs. The result of this research showed that there was an interantion between level of society's welfare and knowledge of wheat flour utilization. It mean that the highest class level knew more about wheat flour utilization. The processed product depended on chosen brand of wheat flour, but there was not an interaction between consumer society level and the chosen product brand of wheat flour. Consumer had difference knowlegde on utilization of CK and KB. For lower and middle class level, and middle and higher class level had similar decision of wheat flour utilization. For higher and lower class level, there was difference knowledge of utilization of wheat flour KB.
Indeks Glisemik Umbi-Umbian Yustinus Marsono
agriTECH Vol 22, No 1 (2002)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1108.269 KB) | DOI: 10.22146/agritech.13574

Abstract

A new approach based on glycemic index was suggested in selecting foods for the diabetes patients. A study on glycemic index of selected tuber foods has been conducted to provide Glycemic Index (GI) of the foods. The tubers including Taro (Xanthosoma violaceum SCHOOT), Yam (Dioscorea aculeata LINN), edible canna (Canna edulis KER), arrowroot (Maranta arundinacea LINN) and sweet potato (Ipomoea balatas POIR) were selected. The foods were analyzed for total sugar and starch after streaming. Ten volunteers (21-23 years old) of the nurse's students of the Panti Rapih Hospital Yogyakarta were provided. They took a night fasting and the blood sample was taken in the next morning. The food tested was given and blood sample was taken at 30, 60, 90 and 120 minutes after meal. Glucose level of the blood was measured and drawn graphically. GI was measured as the area under the postpradial blood glucose curve for a food expressed as a percentage of the area after the consumption of reference food ( bread). The food tested and the reference food contains 50-g available carbohydrate, except for arrowroot and it reference contains 25-g available carbohydrate. It was found that tubers investigated contain 58-76% starch and 1.5-21 % total sugar. Protein and fats varied 3-8% and 0.06-1.45% respectively. With bread as reference food, Glycemic Index of food investigated varied from 14 (arrowroot) to 179 (sweet potato). GI of taro, yam and edible were 95, 90 and 105, respectively.
Penghambatan Oksidasi LDL oleh Ekstrak Air Jahe (Zingiber officinale Roscoe) Secara In Vitro Aisyah Tri Septiana; Fransiska Rungkat Zakaria
agriTECH Vol 22, No 1 (2002)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1345.393 KB) | DOI: 10.22146/agritech.13575

Abstract

Oxidative modification of LDL is believed to play an important role in atherogenesis. Water extract of ginger rhizomes exhibited antioxidative activity is higher than α tocopherol using linoleic acid as substrate. In addition, these extract is kind of ginger extract that daily consumed so may be can be used as functional food. We investigated the effect of in vitro these extract enrichment of LDL on the prevention of oxidative LDL by CuSO4. Plasma was supplemented with 430 or 4300 µg/ml water extract in dimethylsulfoxide (DMSO) (10 µ DMSO per ml plasma), incubated, and the LDL was isolated. Ginger extract also was suplemented on LDL was isolate, and incubated. Lag phase and malonaldehide content was analized after the isolated LDL was oxidized using CuSO4. The result showed that water extract of ginger rhizomes suplementation reduced melonaldehide formation depended on its suplementation. Suplementation these extract on plasma (4300 µg/ml plasma) only reduced 19,04 % malonaldehide content, whereas α tocopherol suplemtation can reduced 26,29 % malonaldehide formation. These extract suplementation on LDL isolate can reduced 43,91 % malonaldehide formation. This research has shown that ginger extract is capable of protecting LDL from oxidation.
Pengaruh Diet Ekstrak Protein Kedelai terhadap Glukosa Serum pada Tikus Diabetik Induksi Alloxan Wisaniya N.W.; Yustinus Marsono; Zuheid Noor
agriTECH Vol 22, No 1 (2002)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1085.213 KB) | DOI: 10.22146/agritech.13576

Abstract

Hypoglycemic property of soyprotein extract were evaluated in alloxan-induced diabetic rats. The objectives of this research were to evaluate the effects of soyprotein extract feeding on glucose concentration in both normal-cholesterol and hypercholesterol alloxan-induced diabetic rats. Twenty-eight male Sprague-Dawley (SD) rats (250-300 g) were provided and divided into four groups of seven rats. They were (1) Standard-Placebo (SP). (2) Standard-Alloxan (SA), Soyprotein-Alloxan (PKA) and (4) Hypercholesterol-Soyprotein-Alloxan (HPKA) groups. Three groups were diabetic induced by alloxan injection (80 mg/Kg of body weught by intra-muscular injection) and one group (SP) was injected with aquabidest (placebo). HPKA groups were fed hypercholesterol diet 2 weeks prior to the alloxan injection. SP and HPKA were fed soy protein diet for 28 days. Concentration of serum glucose were determined before injection (0 day), 1,7, 14, 21, and 28 days after injection. It was found that alloxan injection increased serum glucose concentration of SA, PKA and HPKA rats. In 28 days intervertion, soybean protein diet decreased the serum glucose concentration from 405 mg/dL to 201mg/dL (50%) in PKA and from 428 mg/dL to 210 mg/dL (51%) in HPKA groups, but standard diets (SP and SA) were failed to decrease the serum glucose of the rats.
Pengaruh Parakuat terhadap Produksi Hidrogen Peroksida secara Fotokimia dalam Kloroplas Daun Bayam (Spinacia oleraceae L.) Paini Sri Widyawati
agriTECH Vol 22, No 1 (2002)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1083.649 KB) | DOI: 10.22146/agritech.13577

Abstract

The phytotoxicity of paraquat was suggested due to the production of toxic superoxide during the interaction of paraquat and photosystem l, on the other hand it is also suggested that the paraquat free radical itself is the toxicant. In this study, the effect of paraquat in the production of hydrogen peroxide in chloroplast of spinach leaves (Spinacia oleraceae L.), which is formed form superoxide in the presence of superoxide dismutase and water, was investigated under the influence of irradiation time, amount of oxygen and pH. The result showed that hydrogen peroxide was produced even if there is no paraquat added, meaning that the enzymes activity, such as superoxide dismutase, ascorbate peroxidase, dehydroascorbate reductase and glutathione reductase, cancelled the phytotoxicity of hydrogen peroxide production increases as paraquat is added, the irradiation time and the amount of oxygen present increases. The optimum pH for hydrogen peroxide production was 8. Further study using supernatant, chloroplast pellet and both supernatant and chloroplast pellet, showed that paraquat was acting as electron acceptor for electrons generated by photosystem l and catalyzing the hydrogen peroxide production. This result explain the desiccant effect of paraquat.

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