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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 1,392 Documents

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Sifat Fungsional Pati Ubi Kelapa Kuning (Dioscorea alata) dan Pemanfaatannya sebagai Pengental pada Saus Tomat U Ulyarti; L Lavlinesia; N Nuzula; N Nazarudin
agriTECH Vol 38, No 3 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/agritech.30965

The aim of this research was to determine the functional properties of yellow greater yam’s starch (Dioscorea alata) and its ability to acts as thickening agent for tomato sauce. This research was carried out in 2 stages: starch extraction followed by determination of its physical and functional properties and production of tomato sauce using completely randomized design with 5 levels of starch concentration and 4 replications. The levels were 0, 1, 2, 3 and 4% which was calculated from tomato pulps. Functional properties of yellow greater yam’s starch showed the capability as thickening agent but had quite high setback value. The result showed that the concentration of yellow greater yam’s starch significantly affect viscosity and syneresis (p <0 .01) and a* value (p < 0.05) but did not affect water content, total soluble solid, L* and b* of the tomato sauce. Although creates an obvious color difference (ΔE>3), the concentration of 2% yellow greater yam’s starch is proposed to be used as thickening agent in tomato sauce producing tomato sauce without syneresis during a week of storage, viscosity 4.85 Poise, total soluble solid 44.8 obrix, L* 50.75, a* 50.75, b* 51.30 and overal acceptance “rather like” to “like”.

Karakteristik Beras Analog Berindeks Glisemik Rendah dari Oyek dengan Penambahan Berbagai Jenis Kacang-Kacangan Bayu Kanetro; Dwiyati Pujimulyani; Sri Luwihana; Alimatus Sahrah
agriTECH Vol 37, No 3 (2017)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

The aim of this research was to determine the best legumes for increasing protein of artificial rice that was made of dried growol or oyek based on physical, sensory charactersitics and glycemic index. The experiment design of this research was randomized complete design with the single factor of legumes type, that were soybean mungbean, vevet bean, and cowpeas. The first step of artificial rice processing was mixing dried oyek and legumes flour with 3:7 ratio. The next step was forming the dough into the same as rice, steaming, and drying for producing artificial rice that could be stored. The products of artificial rice were analyzed for texture, colour, and preference level of dried and steamed procuct, proximate composition of dried product, and glycemic index (IG) of steamed product. The result of this research showed that the type of legumes affected the physical and sensory characteristic of artificial rice. The best legumes for producing artificial rice was mungbean. The preference level of the best product was better than the other legumes, and the same as original rice. The proximate composition especially protein content of the best product was the same as original rice, and its IG was be categorized in low IG food product.ABSTRAK Penelitian ini bertujuan menentukan jenis kacang-kacangan yang tepat untuk meningkatkan kadar protein beras analog dari growol kering atau oyek berdasarkan sifat fisik, kimia, sensoris, dan indeks glisemik. Penelitian dilaksanakan dengan rancangan acak lengkap faktor tunggal yaitu jenis kacang-kacangan yang meliputi kacang kedelai, tunggak, koro, dan kacang hijau. Beras analog/artificial dibuat melalui tahap pembuatan adonan yang terdiri campuran tepung kacang-kacangan dan tepung oyek dengan perbandingan 3:7. Selanjutnya dibentuk menyerupai beras, dikukus, dan dikeringkan sehingga diperoleh beras analog yang dapat disimpan. Produk kering dan produk yang siap dikonsumsi (nasi analog) selanjutnya dianalisis tekstur, warna,tingkat kesukaan, dan komposisi proksimat pada beras analog, serta indeks glisemik pada nasi analog. Hasil penelitian menunjukkan bahwa jenis kacang-kacangan berpengaruh terhadap sifat fisik dan tingkat kesukaan beras maupun nasi analog. Jenis kacang-kacangan terbaik adalah kacang hijau yang memberikan tingkat kesukaan nasi analog paling baik dibandingkan jenis kacang-kacangan lainnya dan nilainya sama atau tidak berbeda nyata dengan nasi biasa. Komposisi proksimat beras analog terbaik khususnya kadar proteinnya hampir sama dengan beras biasa, dan IG-nya dikategorikan dalam bahan pangan ber-IG rendah.Kata kunci: Beras analog/artificial; ubi kayu; oyek; indeks glisemik; kacang-kacangan

Perbaikan Sifat Laju Transmisi Uap Air dan Antibakteri Edible Film dengan Menggunakan Minyak Sawit dan Jeruk Kunci Budi Santoso; Zuhara Hilda; Gatot Priyanto; Rindit Pambayun
agriTECH Vol 37, No 3 (2017)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

The objective of the research was to improve water vapor transmission rate and antibacterial properties of edible film by using red palm oil and Citrus mitis. The research design was factorial completely randomized design with three replications. There were three studies: the addition of Uncaria gambir Roxb extract, palm oil concentration, and pH value at the concentration 0, 1.5, and 3 (% w/v); 0, 1.5, and 3 (% v/v); and 3, 4, 5, and 6 respectively. The results showed that interaction of Uncaria gambir Roxb extract, palm oil and pH had significant effected on solubility of edible film. Interaction of Uncaria gambir Roxb and palm oil had significant effected on thickness, percentage of elongation and solubility of edible film. Interaction of Uncaria gambir Roxb and pH had significant effected on solubility of edible film. Characteristic of edible film was produced thickness 0.15 to 0.28 mm, percentage of elongation 23.33 to 87.78%, solubility 33.9 to 49.16%, water vapor transmission rate 3.43 to 8.52 g.m-2.d-1, and inhibition zone for Staphylococcus aureus 0.2 to 8.2 mm.ABSTRAKTujuan penelitian adalah untuk memperbaiki laju transmisi uap air dan sifat antibakteri edible film dengan menggunakan minyak sawit dan jeruk kunci. Rancangan penelitian yang digunakan adalah rancangan acak lengkap faktorial dengan tiga kali ulangan. Perlakuan terdiri atas konsentrasi ekstrak gambir; 0, 1,5, dan 3 (% b/v), konsentrasi minyak sawit; 0, 1,5, dan 3 (% v/v), dan pH (3, 4, 5, dan 6). Hasil penelitian menunjukkan bahwa interaksi ekstrak gambir, minyak sawit, dan derajat keasaman (pH) berpengaruh nyata terhadap kelarutan edible film. Interaksi ekstrak gambir dengan minyak sawit berpengaruh nyata terhadap ketebalan, persen pemanjangan, dan kelarutan edible film. Interaksi minyak sawit dengan derajat keasaman (pH) berpengaruh nyata terhadap kelarutan edible film. Interaksi ekstrak gambir dengan derajat keasaman (pH) berpengaruh nyata terhadap kelarutan edible film. Karakteristik edible film yang dihasilkan adalah ketebalan 0,15–0,28 mm, persen pemanjangan 23,33–87,78%, kelarutan 33,9–49,16%, laju transmisi uap air 3,43–8,52 g.m-2.hari-1, dan diameter daya hambat terhadap Staphylococcus aureus 0,2–8,2 mm.Kata kunci: Antibakteri; edible film; gambir; minyak sawit; pH

Efek Antioksidatif dan Akseptabilitas Bakso Daging Ayam Ras dengan Penambahan Gel Lidah Buaya Chatarina Wariyah; Riyanto Riyanto
agriTECH Vol 38, No 2 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Currently, the consumption of broiler-chicken meat increases up to 3.7510 kg/cap/year. This condition is due to the increasing of population growth and food businesses which use chicken meat. On the other hand, the chicken meat contains of high fat, thus easily oxidized and resulted in free radicals and off- flavor. Chicken meat is widely used as meatball that is processed through the stage of meat-milling and boiling which triggers fat oxidation. Therefore, an antioxidant is needed to inhibit oxidation. Aloevera contains flavonoid compounds that could scavange free radicals. The objective of this research was to optimize the addition of aloe vera gel in the chicken meatball to obtain high antioxidant effect and acceptable product. Considering its high water content (> 98%), in this study aloe vera gel was added as an ice-substitution in the making of meatball. The meatballs were made by mixing of 250 g chicken meat with 125 g tapioca for each sample, seasoning (salt, pepper, garlic), and added ice with water/aloe vera gel ratio (g/g) of 100/0; 85/15; 70/30; 55/45 and 40/60. The doughs were molded in ball-shape then boiled at 90 oC for 10 minutes. The meatballs were subjected to analysis of moisture content, the ability to scavenge of 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical or radical scavenging activity (RSA), acid, peroxide and thyobarbituric acid (TBA) number, physical properties including water holding capacity (WHC), cooking loss, and texture (softness, chewiness and deformation) as well as acceptability by hedonic test. The results showed that the highest acceptability and antioxidative activity of meatballs was obtained in meatball with the ratio of water/gel between 55/45- 40/60 (g/g). This aforementioned meatball had softer texture and likely chewiness. The percentage of the WHC and cooking loss were not significantly different, but it had high RSA and lowest value of acid, peroxide and TBA numbers. ABSTRAKSaat ini konsumsi daging ayam ras pedaging meningkat hingga mencapai 3,7510 kg/kap/tahun. Hal ini disebabkan antara lain oleh meningkatnya jumlah penduduk dan usaha di sektor pangan yang menggunakan daging ayam ras. Disisi lain, daging ayam ras mengandung lemak cukup tinggi, sehingga mudah teroksidasi menghasilkan radikal bebas dan penurunan flavor. Daging ayam ras banyak digunakan sebagai bakso yang diolah melalui proses penggilingan daging dan perebusan, sehingga dapat memicu terjadinya oksidasi lemak. Oleh sebab itu, diperlukan antioksidan untuk menghambat oksidasi. Aloe vera diketahui mengandung senyawa flavonoid yang dapat menangkal radikal bebas. Tujuan penelitian ini adalah melakukan optimasi penambahan gel lidah buaya pada pembuatan bakso daging ayam ras untuk menghasilkan bakso dengan efek antioksidatif tinggi dan disukai. Pada penelitian ini gel lidah buaya ditambahkan untuk mensubtitusi es batu yang digunakan pada pembuatan bakso, mengingat kandungan air gel tinggi (> 98%). Pembuatan bakso untuk setiap 250 g daging ayam ditambah 125 g tapioka, bumbu (garam, merica, bubuk bawang putih) dan es batu yang dibuat dengan variasi rasio air/gel lidah buaya (g/g): 100/0; 85/15; 70/30; 55/45 dan 40/60. Bahan dicampur menjadi adonan dan dibuat bola-bakso, selanjutnya direbus pada suhu 90 oC selama 10 menit. Analisis yang dilakukan adalah kadar air, kemampuan menangkap radikal DPPH, angka asam, peroksida dan TBA (thyobarbituric acid); sifat fisik: water holding capacity (WHC), cooking loss, tekstur (kelunakan, kekenyalan dan deformasi) dan akseptabilitas bakso ditentukan secara inderawi dengan Hedonic Test. Hasil penelitian menunjukkan bahwa bakso dengan akseptabilitas dan aktivitas antioksidasi tinggi dibuat dengan es batu dengan rasio air/gel lidah buaya 55/45-40/60 (g/g). Bakso tersebut lebih lunak dan kekenyalannya disukai. Persentase WHC dan cooking loss tidak berbeda nyata, nilai RSA tinggi, sedangkan angka asam, peroksida dan TBA paling rendah.

Pembuatan Margarin dan Baking Shortening Berbasis Minyak Sawit Merah dan Aplikasinya dalam Produk Bakery Hasrul Abdi Hasibuan; Ananta Akram; Pratiwi Putri; Bella Triana Rangkuti; Ennisa Cita Mentari
agriTECH Vol 38, No 4 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Red palm oil (RPO) is a palm oil product that still retains carotene (pro vitamin A) in high contents. Diversification of RPO in food products should be developed to enhance consumers’ nutrition. This research was conducted to make margarine and baking shortening based on RPO and its application in baking products. The RPO used was neutralized crude palm oil (CPO) (RPO NPO) and from fresh fruit bunches (RPO FFB). Margarine was made into 2 types namely grade A (RPO 100%) and grade B (RPO: refined bleached deodorized palm oil (RBDPO) 50:50) and baking shortening also 2 types namely grade A (RPO: refined bleached deodorized palm stearin (RBDPS): refined bleached deodorized palm kernel oil (RBDPKO) 70:15:15) and grade B (RPO: RBBDPO (50:50): RBDPS : RBDPKO 70:15:15). Bakery products were made into 3 types of sweet bread, donuts and rolls cake. The margarine and baking shortening that obtained have high carotene, the peroxide value fulfills the standard of <10 mgeq/kg but high free fatty acid (FFA) about 0.1-0.3%, that is caused by RPO have high FFA. The sweet breads, donuts and rolls cake using RPO-based margarine and baking shortening have moisture content, fat content, FFA content, peroxide value and volume expansion (except donuts and rolls cake) similar to commercial products, but the carotene content was higher. Preference for color, aroma, texture and flavor of sweet breads, donuts and rolls cake using RPO : RBDPO (50:50) were quite high from RPO 100%, but lower compared to commercial products, relatively. Therefore, mixing of RPO and RBDPO can be an alternative in improving nutrition of bread products.

Pemanfaatan Ekstrak Ubi Ungu sebagai Pewarna Merah pada Soft Candy dan Stabilitasnya Putu Timur Ina; Gusti Ayu Kadek Diah Puspawati; Gusti Ayu Ekawati; Gusti Putu Ganda Putra
agriTECH Vol 39, No 1 (2019)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

This study aimed to determine the purple sweet potato pigment extract concentration in soft candy formulation and its stability during storage. The research was conducted in two steps i.e. the addition of purple sweet potato pigment extract concentration in soft candy and of soft candy’s red pigment stability during storage. Firstly, the soft candy formulation was added with the red pigment of purple sweet potato extract in various concentrations, i.e. control (0% extract); 0.25% concentration of the pigment extract; 0.50%; 0.75%; and 1%. Secondly, the stability examination of pigment extract in soft candy was carried out at various storage temperatures: at refrigerator temperature (4 °C); at room temperature (27 ℃); and at 35 °C within the observation period of every 2 days for 14 days. The results showed that soft candy with the purple sweet potato red pigment extract addition of 0.75% concentration gave the highest value on panelists’ acceptance in terms of color, odor, texture, taste and overall acceptance as follows: 6.08 (like); 4.02 (neutral); 5.58 (like); 5.46 (rather like); and 5.92 (like), respectively, with the following levels of anthocyanin, total phenolic and antioxidant activity: 12,74±0,06 mg/100 g; 0,73±0,02 g/100 g and 0,76±0,02 g AAE/100 g, respectively. Stability of soft candy’s red pigment extract during storage at a temperature of 35 °C for 14 days showed a decline in the value of a* (redness), but an increase in the value of b* (yellowness) and the value of L (brightness), as a significant indicator of the purple sweet potato red pigment extract color change on soft candy, meanwhile at refrigerator (4 ℃) and room temperatures (27 ℃) after 14 days observation has not shown the loss or a significant reduction of red pigment color.

Kandungan Gizi, Beta Karoten dan Antioksidan pada Tepung Pisang Tongka Langit (Musa troglodytarum L.) Ika Yohanna Pratiwi; Oki Krisbianto
agriTECH Vol 39, No 1 (2019)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Banana fruit cultivar Tongka Langit is a typical plant from Moluccas which has not widely used and observed just yet. It has been believed and used by locals to relieve body heat, clean the kidneys, and keep the health of the digestion tract, but without scientific proof. This study aims the nutrition content of Tongka Langit flour, along with its carotenoids, beta carotene, and antioxidant content. The banana fruit was dried at 60 oC for 2 hours. Banana flour had been analyzed for moisture content, levels of ashes, levels of protein, the fibers, carbohydrates, vitamin C, mineral, carotenoids and antioxidant. It had been found that Tongka Langit flour contained 331,03 calories, 4,66% protein, 83,72% carbohydrate and 16,59% dietary fibers. Tongka Langit flour contained 7,92 mg/ 100 mg carotenoid total which 18,56% was beta carotene. As much as 0.35 mg/kg flavonoid was also found, along with its high level of antioxidant activity.

The Effects of Roasting Time of Unfermented Cocoa Liquor Using the Oil Bath Methods on Physicochemical Properties and Volatile Compound Profiles Nurhayati Nurhayati; Francis Maria Constance Sigit Setyabudi; Djagal Wiseso Marseno; Supriyanto Supriyanto
agriTECH Vol 39, No 1 (2019)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

This study aimed to measure the effect of roasting time on physicochemical properties and volatile compounds of unfermented cocoa liquor roasted with an oil bath method. Physicochemical properties (pH, temperature, and color), flavor, and volatile compounds were analyzed. The results showed that the longer the roasting time the higher the unfermented cocoa liquor’s temperature, °Hue, and ΔE value, but lower pH and L value. There were 126 volatile compounds obtained by various roasting time, identified as pyrazines (12), aldehydes (16), esters (1), alcohols (31), acids (15), hydrocarbons (11), ketones (19), and others (21). At 15, 20, and 25 minutes of roasting time, 69, 74, and 67 volatile compounds, respectively, were identified. Volatile compounds’ profiles were indicated to be strongly influenced by roasting time. The largest area and highest number of compounds, such as pyrazines and aldehydes, were obtained at 20 minutes, which was also the only time the esters were identified. As well as the time showed a very strong flavor described by panelists.

Evaluasi Kesesuaian Lahan Komoditas Pangan Utama di Kecamatan Umbu Ratu Nggay Barat Kabupaten Sumba Tengah Marten Umbu Nganji; Bistok Hasiholan Simanjuntak; Suprihati Suprihati
agriTECH Vol 38, No 2 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

This research was conducted in West Umbu Ratu Nggay district of Central Sumba Region in January–March 2017. The method of analysis used was LQ (Location Quotient) method, matching method and overlay method. The results showed that the maim food commodities in West Umbu Ratu Nggay District were green beans with values of LQ 1,60; sweet potato with LQ 1,33, rice with LQ 1,16; and corn with LQ 1,03. Green beans suitability class is S2 (moderatelly suitable) with area 28.021,13 ha (99.69%) and N (not suitable) with area 87.91 ha (0.31%). Sweet potato commodity with land suitability is in class S1 (highly suitable) with area 90,41 ha (0.32%), S2 (moderatelly suitable) with of 27.930,73 ha (99.7%), and N (not suitable) with area 87,91 ha (0.31%). Commodity of rice with land suitability class S1 (highly suitable) with area of 1.322,43 ha (4.70%), S2 (moderatelly suitable) with area of 26.704,21 ha (95.00%), and N (not suitable) with area of 83,24 ha (0.30%). Corn commodity with land suitability class S2 (moderatelly suitable) with area of 8.21,13 ha (99.69%) and N (not suitable) with area of 87,91 ha (0.31%). ABSTRAKPenelitian ini dilakukan di Kecamatan Umbu Ratu Nggay Barat Kabupaten Sumba Tengah pada bulan Januari-Maret 2017. Metode analisis yang digunakan adalah metode LQ (Location Quotient), metode pencocokan dan metode overlay. Hasil analisis menunjukkan bahwa komoditas pangan unggulan di Kecamatan Umbu Ratu Nggay Barat secara berturut-turut adalah kacang hijau dengan nilai LQ 1,60, ubi jalar dengan nilai LQ 1,33, padi sawah dengan nilai LQ 1,03 dan jagung dengan Nilai LQ 1,03. Kelas kesesuaian lahan kacang hijau adalah S2 (cukup sesuai) dengan luas 28.021,13 ha (99,69%) dan N (tidak sesuai) 87,91 ha (0,31%). Komodias ubi jalar dengan kelas kesesuaian lahan S1 (sangat sesuai) dengan luas 90, 41 ha (0,32%), S2 (cukup sesuai) dengan luas 27.930,73 ha (99,37%), dan N (tidak sesuai) 87,91 ha (0,31%). Komoditas padi sawah dengan kelas kesesuaian lahan S1 (sangat sesuai) 1.322, 43 ha (4,70%). S2 (cukup sesuai) 26.704,21 ha (95,00%), dan N (tidak sesuai) 83,24 ha (0,30%). Komoditas jagung dengan kelas kesesuaian lahan S2 (cukup sesuai) 28.021,13 ha (99,69%) dan N (tidak sesuai) 87,91 ha (0,31%).

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.

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Fiametta Ayu Purwandari

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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 Fiametta Ayu Purwandari

Contact Email fiametta@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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Contact Name
Fiametta Ayu Purwandari

Contact Email
fiametta@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