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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 25, No 2 (2005)" : 6 Documents clear
Aktivitas Antioksidan dan Stabilitas Ekstrak Andaliman (Zanthoxylum acanthopodium DC) Terhadap Panas, Cahaya Fluoresen dan Ultraviolet Edi Suryanto; Sri Raharjo; Hardjono Sastrohamidjojo; Tranggono Tranggono
agriTECH Vol 25, No 2 (2005)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1812.1 KB) | DOI: 10.22146/agritech.13355

Abstract

Andaliman fruit is seasoning commonly used in traditional food preparation of North Sumatera. The objectives of this study were to determine the antioxidant stability of andaliman extract on high temperature fluoresence and ultraviolet high exposures. Andaliman fruit was sequentially extracted with hexane, acetone and ethanol. Antioxidant activity of each extracts at 50-500 ppm level are evaluated in 1,1-dipheny1- 2-picodhydrazyl (DPPH) radical 'decoloration test. The third extract was evaluated on heating at Iwo high temperature exposures were conducted on the third extract: storage at 100°C for 15, 30, 60, and 120 minute and storage at 100, 120, 140 and 180.c for 60 minutes. The treatment of light exposure were under 4000 lux fluoresen light and ultraviolet C (200-280 nm) light for 5 hours. The effect of ethanol extract (ESHAE) and acetone extract (ESHA) extract showed the highest scavenging activity in 1,1-dipheny1-2-picrylhydrazyl (DPPH) radical, followed acetone and hexane extract. BHT and atocopherol as positive control had weaker radical scavenging activity in DPPH system. Ethanol extract (ESHAE) extract at 200 ppm was significantly possessed high stability on heating at 100°C, fluoresent and ultraviolet, whereas hexane extract (EH) was low antioxidative efect. The addition of ethanol extract (EHSAE) at different concentration exhibited excellent reduction power more than acetone extract (ESHA) and hexane extract (EH). Ethanol extract (ESHAE) at concentration 500 ppm showed equal with 200 ppm BHT and rutin, but more than a-tocopherol. It is concluded that the ESHA and ESHAE extract of andaliman fruit showing stability on heating a! /00°C for 60 minutes, fluoresent and ultraviolet light light during 5 hours
Pengaruh Diet Protein Kedelai terhadap Profil Lipida Tikus Diabetik Induksi Alloxan Ni Wayan Wisaniyasa; Yustinus Marsono; Zuheid Noor
agriTECH Vol 25, No 2 (2005)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1680.953 KB) | DOI: 10.22146/agritech.13359

Abstract

Hypolipidemic of soybean protein were evaluated in alloxan-induced diabetic rats. The objectives of this research were to evaluate the effects of soybean protein feeding on total, HDL, LDL cholesterol and triacylglycerol serum level in both normal cholesterol and hypercholesterol alloxan-induced diabetic rats. Twenty-eight male Sprague-Dawley rats (250-300 g) were used and divided into four groups of seven rats. They were (1) Standard-Placebo (STP), (2) StandardAlloxan (STA), Soybean protein-Alloxan (PKA) and (4) Soybean protein- Hypercholesterol-Alloxan (PKHKA) groups. Three groups were diabetic induced by alloxan injection (80 mg/Kg of body weight by intra-muscular injection) and one group was injected with aquabidest (Placebo). PKHKA group was fed hypercholesterol diet for 2 weeks prior to the alloxan injection. STP and STA groups were fed standard diet whereas PKA and PKHKA were fed soybean protein diet for 28 days. Concentration of lipids were determined before injection (0 day ) and 1, 7, 14, 21, and 28 days after injection. It was found that alloxan injection increased serum total and LDL cholesterol and triacylglycerol concentration of STA, PKA and PKHKA rats. In 28 days intervention, soybean protein diet decreased the serum total cholesterol by 12% (PKA) and 33% (PKHKA), LDL cholesterol by 15% (PKA) and 48% (PKHKA); and triacylglycerol by 31% (PKA) and 37% (PKHKA). In addition, the diet increased the serum HDL cholesterol by 3% (PKA) and 8% (PKHKA). On the other hand, standard diets were failed to decreased the serum total cholesterol, LDL cholesterol and triacylglycerol.
Evaluasi Mutu dan Kemurnian Madu Tawon yang Beredar di Kota Semarang Ch Retnaningsih; Vera Handayani; Lucia Sri Lestari
agriTECH Vol 25, No 2 (2005)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1435.617 KB) | DOI: 10.22146/agritech.13361

Abstract

Honey is a thick liquid that are collected, moded and condensed by honey bees from the nectar source. Along with its fame, honey that are distributed now a days appear in different kind of quality and variety. The aim of the study was to determine the quality of commercial honeys distributed in Semarang and compared with fresh honey. Samples of honey covered 6 brands of commercial honey and 3 brands of honey of "jamu" products. Commercial honeys were classified based on the price, i.e. those with the price of Rp. 3000-4000/100m1 and those with the price of Rp.5000-6000/10Orn1. The chemical analyses which had been done covered diastase's activity, hidroxymethylfurfural (HMF), reducing sugar, sucrose and moisture. The results showed that honey composition were influenced by the nectar source, age of the honey bees and also the environment of nectar source. The decrease of honey's quality was influenced by the invertase enzyme, also the condition and method to preserve honey during storage. According to the result of the quality and authenticity, honeys from Vamu" product fulfilled the quality standard of SNI-3545-1994, except for SM brand, containing reducing sugar and HMF lower than the SN1 standard. But if it was compared to commercial honeys and fresh honey the quality was much lower. The result showed that honey with the price of Rp.5000-6000/100m1 the quality wasn't assured to be better than those honey with the price Rp. 3000-4000/100m1. The result also showed the indication of high fructose corn syrup addition to honey.
Peran Lactoferin Susu Kuda sebagai Imunomodulator dalam Respon Imun Humoral Nurliyani Nurliyani; Mochamad Adnan; Wayan Tunas Artama; Zuheid Noor
agriTECH Vol 25, No 2 (2005)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1090.78 KB) | DOI: 10.22146/agritech.13365

Abstract

Lactoferrin is a multifunctional defense protein, eg. as immunomodulator , which is known as glycoprotein which has 80 kDa molecullar weight. The aim of this research is to characterize of horse milk lactoferrin as immunomodulator in humoral immune response. Lactoferrin in defiled horse milk, was isolated and purified on Ion Exchange (CM Sephadex C-50) and Gel Filtration (Sephadex G-75) column. Horse milk lactoferrin is administered orally into a group of 6-8 weeks old female Balb/c mice. The dose of lactoferrin were : 0 nig (control); 0,1 mg; 0,5 mg, and 1,0 mg/mice/day in assay period of 28 day. On the r; 4 216, and 286 day, specific IgA and IgG serum of mice were detected with enzyme-linked immunosrbent assay (ELISA). The results showed that IgG and Ig,4 responses of mice that were administered with 0,5 mg or 1,0 mg horse milk lactoferrin, were higher than the control and 0,1 mg lactoferrin (P<0.05). Horse milk lactoferrin apparently induced subclass IgG1 and IgG2b response. It can be concluded that horse milk lactoferrin which has function as immunomodulator in humoral immune response
Konsentrat Serat Kedelai : Preparasi dan Pengaruhnya terhadap Sifat Fisik dan Kimia Digesta pada Tikus Sri Budi Wahjuningsih; Yustinus Marsono; Zuheid Noor
agriTECH Vol 25, No 2 (2005)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1523.683 KB) | DOI: 10.22146/agritech.13367

Abstract

Soy fiber concentrate (SFC) was isolated from soy flour by extraction in alkali solution (pH 9), centrifuged and washed the solid in ethanol 80% then in acetone 33%, and dried. Effects of soy fiber diet on physical and chemical properties of the rat digesta were evaluated. The objective of this study were (I) to determine the composition of the SFC , (2) to evaluate the effect of soy fiber diets on physical properties (water content and weight) and chemical properties ( pH and SCFA) of the caecal digesta in rats. Four groups of jive male Sprague Dawley rats were provided. They were given differ rent diets Le. soybean, low and high soybean fiber and control diets ad libitum for 21 days period. In the end of experiment they were killed, the caecum were cut and the caecal digesta were taken and analyzed for moisture content, weight, pH and SCFA concentrations. It was found that soy fiber concentrate contains 71.52% total dietary fiber (62.56% insoluble fiber and 8.96 soluble fiber). Weight and moisture contents of the digesta were not affected by the soyfiber diets, but the diets decreased the pH of the digesta significantly. The diet also did not affect the molar proportion of the SCFA. SCFA molar ratio of the caecal digesta were: 62-63: 26-27: 10-11 for acetic: propionic: butyric acid
Penggunaan Energi pada Usahatani Padi di Lahan Lebak Sudirman Umar; Noorginayuwati Noorginayuwati
agriTECH Vol 25, No 2 (2005)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1771.266 KB) | DOI: 10.22146/agritech.13369

Abstract

One of the main purposes in Agricultural development in Indonesia is increasing food stability. So many efforts have been done to achieve high rice production but the energy consumption and its distribution has not been analyzed yet. Hence, analyzing on distribution of energy consumptions through energy analysis and cost are needed to be done. The research was conducted in September to December 2004 in Hamayung Utara and Baruh Kembang village, Daha Utara district South Hulu Sungai, Province of South Kalimantan, as the center of monotonous swamplands (lebak) rice production. The result showed that energy input of rice cultivation in swampy land using pump technology in it production process, input energy up to 50 MJ/ha, unless in seedling stage 17.54 MJ/ha. Total energy consumption during production process was 8427,37 MI/ha but using traditional method without pump was 559,08 MJ/ha. Cost input analysis showed that cost input using pump technology as much as Rp. 2,710.019.00/ha and 36.29% lower than the income of the cost output. Energy input using pump technology is much lower (16.06%) compared to energy output 52,449.6 MJ/ha. Addition with irrigation technology and chemical energy input (chemical fertilizer) increased cost output as much as Rp. 2,841,250.00 equal output energy 33,413.10 MJ/ha and increased energy output as much as 175,52 %. On farming system in monotonous swampy land the energy input ang production increased 14.07 and 1.75 times by addition machinery technology (pump).

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