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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 10 Documents

Search results for , issue "Vol 40, No 1 (2020)" : 10 Documents clear

Rancang Bangun Computer Vision System (CVS) Sebagai Instrumen Pengukuran Warna Buah-Buahan Ferlando Jubelito Simanungkalit; Rosnawyta Simanjuntak
agriTECH Vol 40, No 1 (2020)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Color had a correlation with physical appearance, nutritional and chemical content as well as sensory properties which determine the quality of agricultural products and foods. Conventional color measurements were performed destructively using laboratory equipment. Therefore, color measurement methods of agricultural products were needed more quickly, accurately and non-destructively. This study aimed to develop a Computer Vision System (CVS) that can be used as a tool to measure the color of fruits. The designed CVS consists of a 60x60x60 cm black mini photo studio; a pair 15 watt LED lighting, sony α6000 digital camera, a set of laptop and an image processing software applications. Image processing software was programmed using VB.Net 2008 programming language. The developed CVS was calibrated using 24 color charts Macbeth Colorchecker (Gretag-Macbeth, USA). The calibration results of 24 color chart of Macbeth Colorchecker was resulted in a MAPE (Mean Absolute Percentage Error) value of component R / Red = 0%; G / Green = 0% and B / Blue = 0,5%; with 99% accuracy rate. In color measurement, the developed CVS had a 95% accuracy rate.

Sifat Fisik, Amilograf, dan Morfologi Pati Biji Lai (Durio kutejensis) Asetilasi Menggunakan Asetat Anhidrat Siti Masithah Fiqtinovri; Ashri Mukti Benita; Djagal Wiseso Marseno; Yudi Pranoto
agriTECH Vol 40, No 1 (2020)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Lai (Durio kutejensis) seed starches have a high retrogradation ability and low paste stability so that its function in food industry is less widespread. This phenomenon can be overcome by starches modification, such as acetylation using asetat anhidrat as modifying agent. This study aims to observe the physical properties of acetate starch such as swelling power and solubility, morphological characteristics, and amylographic properties (retrograde rate, viscosity, gelatinization temperature) and the results will be compared to native starch. Lai seed starches was acetylated using asetat anhidrat 3% and 4%, the reaction time variation was 15, 30, 45 and 60 minutes and the reaction pH used ranged from 8-8.5. Acetylation with a different amount of asetat anhidrat (3% and 4%) and different time of reaction (15, 30, 45, 60 min) give an optimum result of DS in 4% of asetat anhidrat with 15 minute of reaction time. DS that reached at those condition is 0.22 and has the same tipe as native starch (tipe A). The result of FTIR shown that there’s a new peak at 1735 cm-1 was a part of carbonyl group and the weakening of hydroxyl group peak of acetate starch. Acetylation decreased the final viscosity from 1472 cP to 1170 cP, setback value from 172 cM to 31cP, and breakdown from 798 cP to 350 cP. Meanwhile, the pasting temperature increased after acetylation from 71.82 °C to 76.05 °C. These result indicate that acetylation increased the resistance of retrogradation, and high pasting stability.

Status Ketahanan Pangan dan Faktor Sosio-Ekonomi pada Masyarakat Pesisir Kabupaten Buru Selatan Christiana Titaley; Ninik Ma’athia Sallatalohy; Felecia Petrosina Adam
agriTECH Vol 40, No 1 (2020)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Food security was one of the global issues, especially in developing countries, including Indonesia. This study aimed to examine the status of food security and its related factors in the coastal communities in the area of Buru Selatan District, Maluku Province. This study used secondary data collected from a household health survey conducted by the Faculty of Medicine, Pattimura University in November 2017. Information is derived from 899 respondents aged 20−60 years. Food security status was measured using the US Household Food Security/Hunger Survey Module (USFSSM). Factors ranging from environmental, household and individual levels are included in the analysis. Logistic regression method was applied to determine factors associated with food security status. Of the 899 respondents interviewed, only 30% was food secured and about 70% suffered fromfood insecurity (33,7% experienced food insecurity with hunger). Respondents from Waesama Sub-district were more food secured than those from Kepala Madan Sub-district (aOR = 2,16, 95% CI: 1,33-3,52, p=0,002). Respondents from "very rich" households were three and a half times more food-secured than "very poor" households (aOR = 3,49, 95% CI: 2,13-5,73, p<0,001). In addition, those who paid for the membership of health insurance were more food secured than those who got waived payment of contributions (aOR = 1,49, 95% CI: 1,07-2,08, p=0.018); and respondents living in an ideal household density (8 m2 or more per person) were more food secured than those innot ideal condition (aOR = 1,55, 95% CI: 1,01-2,39, p=0,047). Our study showed that intersectoral collaboration is important to improve community’s food security status. Long and short term interventions aimed at reducing poverty and providing subsidized foods, including fortified ones, to the those in need accompanied by educational programs to improve community knowledge about various alternative of local food are essential.

Emulsifying Characteristics of Gelatin Hydrolysate from Tilapia Skin Covalently Attached with N-hydroxysuccinimide Esters of Fatty Acids Nurin Imana Hidayati; Retno Indrati; Pudji Hastuti; Masahiro Ogawa
agriTECH Vol 40, No 1 (2020)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

This study aims to combine two modification methods, namely enzymatic hydrolysis and covalent attachment with hydrophobic groups, to increase the emulsifying properties of gelatin. The experiment was conducted by using a completely randomized design with three replicates. Enzymatic hydrolysis of gelatin resulted in higher contents of free amino groups, which could be attached to hydrophobic groups. Gelatin hydrolysates covalently attached with the N-hydroxysuccinimide esters of C14:0 and C18:0 fatty acids at a molar ratio of 3.0 showed high emulsifying activity but low stability. Among the samples obtained, gelatin hydrolysate covalently attached with C18:0 at a molar ratio of 3.0 revealed the highest emulsifying activity; however, this sample cannot be considered the best emulsifier among the samples because of its low stability.

Trend Analysis of Red Chili Price-Formation Models Siti Mir'atul Khasanah; Mochammad Maksum; Endy Suwondo
agriTECH Vol 40, No 1 (2020)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Red chili’s characteristic flavor has been a popular element in Indonesian cuisine. A large and continuous demand for red chili is inconsistent with production volumes, causing frequent and extreme price fluctuations throughout the year. This study explores the changing trends in red chili prices to identify the influencing factors. The study was conducted in the Sleman district of Yogyakarta, Indonesia. Time-series datasets of monthly production rates and prices of chili for 3 years were subject to multiple linear regression analysis. The study found a rising trend in prices in the Sleman Regency from January 2014 to December 2016. The factors significantly influencing the red chili prices was the price of cayenne pepper. The production cost of chili, the price of tomatoes, and the price of chili for the previous 2 months had only partial and nonsignificant effects. The timing of great Muslim celebrations, such as Eid Al-Fitr and Eid Al-Adha had no significant effect on the price of red chili. However, Christmas and New Year events were associated with higher prices.

Formulasi dan Karakteristik Bubur Kacang Merah (Phaseolus vulgaris L.) Instan dengan Pemanis Sukrosa, Isomalto-oligosakarida dan Fibercreme Rhaesfaty Galih Putri; Priyanto Triwitono; Yustinus Marsono
agriTECH Vol 40, No 1 (2020)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

This study aimed to characterize red kidney bean instant porridge formulation with sucrose (BKM S), isomalto-oligosaccharides (BKM IMO), and fibercreme (BKM FC) as sweeteners on sensory, chemical and physical properties. Isomalto-oligosaccharides and fibercreme are used as sucrose substitutes because they provide a sweet taste as well as high fiber that can provide health benefits. The result showed that IMO and FC as a sucrose replacement in red kidney bean instant porridge formulation did not affect the texture, instead of lowering the acceptance level. The formulations did not change rehydration time but reduced the viscosity, while the water holding capacity increased with IMO replacement but decreased in FC replacement. Besides, the formulations increased the amount of fiber and decreased calories.

Rancangbangun Starter Elektrik Portabel untuk Mesin Traktor Tangan Geraldo Adinugra Rimartin; Bambang Purwantana; Radi Radi
agriTECH Vol 40, No 1 (2020)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Indonesian farmers used to utilize crank to turn on hand tractor machine till today. It may make operators weariness and potentially raised work accident. The purpose of this study was to design a portable electric starter for hand tractor machine. Moreover, the study was addressed to evaluate the performance of the design. The minimum rotational speed (n) and initial torque (T) in decompression and non decompression conditions were adopted to calculate the minimum power (P) requirement. The minumum power of decompression and non decompression were 572.78 watts (≈ 0.74 hp) and 841.75 watts (≈ 1.09 hp), respectively. These values used as a reference in determining the main components, namely the wet type 12 volt battery and the serial type direct current starter motor. The next step, set up additional components, transmission mechanism, as well as concept of portable electric starter. The design was realized by construction and assembly process. A performance test was carried out on the prototype. The performance test of non decompression showed 1.88 seconds for working time, 264.56 Joules for workload (operator), 363.20 rpm for rotating speed and 0.68 watt hours for power requirement. Overall, application portable electric starter indicated better performance than crank. This study proved a high preference of operator on application of portable electric starter in decompression conditions.

Sifat Fisikokimia dan Profil Asam Lemak Minyak Ikan dari Kepala Kakap Merah (Lutjanus malabaricus) Desiana Nuriza Putri; Yessi Maulidhia Nugrahani Wibowo; Erika Novena Santoso; Putri Romadhani
agriTECH Vol 40, No 1 (2020)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Red snapper processing industry (Lutjanus malabaricus) produces more than 50% solid waste and by-products, so the by-product of red snapper processing, viz., the fish head is a potential source of omega-3. This study aimed to determine the rendering method and extraction time, producing the best quality fish oil that is rich in omega-3 from the red snapper head. The samples were taken from a fish fillet industry in Pasuruan, East Java, Indonesia. Randomized Block Design (RBD) with two factors has been used to evaluate different rendering methods (wet and dry rendering) and extraction time (1, 2, and 3 hours) in triplicate. The results showed that the best fish oil was produced by wet rendering method in 1 hour of extraction time, achieving peroxide number 0.98 meq/kg, free fatty acid 1.02%, acid number 2.02%, extraction yield 9.02%, water content 4.22% (wb), brightness (L) 43.5, redness level (a) -0.9, and yellowish level (b) 2.7. The fish oil consisted of 31 types of fatty acids with palmitic acid as the major fatty acid. Additionally, the oil also contained omega-3 (14.02%) as well as AA, DHA, and EPA.

Karakteristik Fisik Beras Analog Instan Berbasis Tepung Jagung dengan Penambahan k-Karagenan dan Konjak Indah Kurniasari; Feri Kusnandar; Slamet Budijanto
agriTECH Vol 40, No 1 (2020)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Instant analog rice is a form of product development from analog rice that is ready for consumption without the need to be cooked first but only needs to be soaked in boiling water for 3-5 minutes. The main challenge in developing instant analog rice is to reduce rehydration time while maintaining the integrity and texture of the rice produced. Hydrocolloids in the form of κ-carrageenan and konjac with concentrations of 0.5‒10.0%, both as a single additive and in combination, were added to the corn-based analog rice formula. Then, their effects on the physical characteristics of the instant analog rice were studied. The addition of κ-carrageenan and konjac in combination at a concentration of 5% each (KK10) showed the best results. This instant analog rice had a lower degree of breakage and bulk density, 2.02% and 0.39 g/mL, respectively. It showed a more hollow rice microstructure than the control and other combinations. KK10 instant analog rice can be rehydrated by soaking in boiling water for 3.5 minutes. The rehydrated rice had high grain integrity, with hardness, springiness, and chewiness values of 548.14 g; 0.86; and 229.76 g, respectively.

Pemurnian Produk Mono-Diasilgliserol (MDAG) Hasil Gliserolisis Kimia dengan Metode Demulsifikasi Krim Satiti Kawuri Putri; Purwiyatno Hariyadi; Mursalin Mursalin; Nuri Andarwulan
agriTECH Vol 40, No 1 (2020)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Cream demulsification is one of the purification method for separating the glycerol residue contained as emulsion with MDAG’s product. This method could be used to break emulsion system by adding electrolyte solution. This research aims to compare the performance of calcium chloride and calcium nitrate as electrolyte solution that is used in the process of cream demulsification. MDAG used was Fully Hydrogenated Palm Kernel Oil (FHPKO) from glycerolysis process. Based on student t-test, there was no significant difference (p>0,05) detected between the products of cream demulsification method using calcium nitrate and calcium chloride as electrolyte solution. It was discovered that calcium nitrate reduced residual glycerol from 11,69±0.88% to 0,57±0,07%; with characteristics of MDAG’s products were free fatty acid (ALB) of 8,51±0,94%, monoacylglycerol (MAG) of 31,53±3,27%, diacylglycerol (DAG) of 19,46±0,52%, triacylglycerol (TAG) of 39,93±4,66% and yield of 81,00±3,61%.respectively. In other hand, calcium chloride reduced residual glycerol from 11,69±0,88% to 0,64±0,06%; with characteristics of MDAG’s products were ALB of 8,91±0,71%, MAG of 9,79±1,97%, DAG of 19,16±0,53%, TAG of 41,49±3,24% and yield of 80,00±4,00%, respectively. Therefore, calcium nitrate can be to replace calcium chloride as electrolyte solution in cream demulsification method, especially in reducing the glycerol residue.

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Contact Name
Rachma Wikandari

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rachma_wikandari@mail.ugm.ac.id

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+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

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

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

Abstract

Abstract

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Abstract

Abstract

Abstract

Abstract

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Abstract

Abstract

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