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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 1,380 Documents

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Karakteristik Kimia dan Mikrobiologis Asam Drien (Durian Fermentasi dari Aceh) pada Berbagai Metode Pembuatan Murna Muzaifa; Ryan Moulana; Yuliani Aisyah; Ismail Sulaiman; Trisma Rezeki
agriTECH Vol 35, No 3 (2015)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Research has been conducted to examine the chemical and microbiological characteristics of asam drien (tempoyak from Aceh) made by following various methods in Aceh. This study used completely randomized design consisting of 4 treatments: fermented durian without the addition of other ingredients/normal (A), fermented durian using turmeric (B), fermented durian using salt (C), fermented durian using salt and turmeric (D). The parameters analyzed included chemical properties (water content, pH, total lactic acid, and total sugars) and microbiological analysis (total lactic acid bacteria and yeasts). The results showed that the method of asam drien production had very significant effect on the water content, the total pH, total lactic acid, total sugar sand total lactic acid bacteria, but did not significantly affect the total yeast. There is a tendency that the number of treatment without the addition of salt produced water content, total lactic acid and total lactic acid bacteria higher. Average chemical and microbiological characteristics asam drien are as follows: 66.49% moisture content, pH4.1, totalacid2.30%, 30.50% total dissolved solids, total lactic acid bacteria 99×10 10 CFU/g and a total of 18×10 6 yeast CFU/g.ABSTRAKTelah dilakukan penelitian untuk mengkaji karakteristik kimia dan mikrobiologis asam drien(tempoyak asal Aceh) dengan mengikuti beberapa metode pembuatan asam drien yang ada di Aceh. Penelitian ini menggunakan RAL nonfaktorial yang terdiri atas 4 perlakuan, yaitu: fermentasi durian biasa tanpa penambahan bahan lain (A), fermentasi durian menggunakan kunyit (B), fermentasi durian menggunakan garam (C), fermentasi durian menggunakan garam dan kunyit (D). Parameter yang dianalisis meliputi sifat kimia (kadar air, pH, total asam laktat, total gula) dan analisis mikrobiologis (total bakteri asam laktat dan khamir). Hasil penelitian menunjukkan bahwa metode pembuatan asam drien berpengaruh sangat nyata terhadap kadar air, total pH, total asam laktat, total gula dan total bakteri asam laktat, namun berpengaruh tidak nyata terhadap total khamir. Terdapat kecenderungan bahwa pada perlakuan tanpa penambahan garam dihasilkan kadar air, total asam laktat dan total bakteri asam laktat lebih tinggi. Rata-rata karakteristik kimia dan mikrobiologis asam drien adalah sebagai berikut: kadar air 66.49%, pH 4.1, total asam 2.30%, total padatan terlarut 30.50%, total bakteri asam laktat 99×1010 CFU/g dan total khamir 18×10 6CFU/g.

Pengaruh Konsumsi Tempe Kedelai Hitam terhadap Aktivitas Makrofag dan Kadar Interleukin 1(IL-1) pada Tikus Secara in vivo Nurrahman Nurrahman; Nurhidajah Nurhidajah
agriTECH Vol 35, No 3 (2015)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Black soybean tempe diet could increase the stimulation index of proliferation T cells, lymphocytes durability of hydrogen peroxide and the enzyme activity of SOD.The purpose of this study was to determine the effect of black soybean tempe consumption on on the activity of macrophages and the levels of IL-1 in rat in vivo. A total of 30 rats were grouped into 5 (five), each group of rats were 6. For 30 days each group was maintained by administering a standard diet and diet plus black soybean tempe flour (25, 50, 75 and 100% instead of casein). After the peritoneal fluid was taken to be used for analysis of macrophages activity and the levels of IL-1. The results showed highe rnumber of black soybean tempe in the feed, the higher the index of phagocytosis and the levels of IL-1. Consumption of black soybean tempe effect on macrophages activity and the levels of IL-1 (p < 0.05). Increased macrophage activity was positively correlated to the amount of IL-1, by 0.9 coefficient of correlation.ABSTRAKDiit tempe kedelai hitam dapat meningkatkan indeks stimulasi prolifersi sel T, meningkat daya tahan limfosit dari hidrogen peroksida dan aktivitas enzim SOD. Tujuan penelitian ini untuk mengetahui pengaruh konsumsi tempe kedelai hitam terhadap aktivitas makrofag dan kadar IL-1pada tikus secara in vivo. Sebanyak 30 ekor tikus dikelompokan menjadi 5 (lima), masing-masing kelompok sebanyak 6 ekor tikus. Selama 30 hari masing-masing kelompok dipelihara dengan pemberian diit standar dan diit ditambah tepung tempe kedelai hitam (25, 50, 75 dan 100% sebagai ganti kasein). Setelah itu diambil cairan peritoneal yang akan digunakan untuk analisis aktivitas makrofag dan kadar IL1. Hasil penelitian menujukkan semakin tinggi jumlah tempe kedelai hitam di dalam pakan, semakin tinggi indeks fagositosis dan kadar L-1. Konsumsi tempe kedelai hitam berpengaruh terhadap aktivitas makrofag dan kadar IL-1(p<0,05). Peningkatan aktivitas makrofag berkorelasi positif terhadap jumlah IL-1, dengan koefisien korelasi 0,9.

Ketahanan Panas Cemaran Escherichia coli, Staphylococcus aureus, Bacillus cereus dan Bakteri Pembentuk Spora yang Diisolasi dari Proses Pembuatan Tahu di Sudagaran Yogyakarta Reny Mailia; Bara Yudhistira; Yudi Pranoto; Saiful Rochdyanto; Endang Sutriswati Rahayu
agriTECH Vol 35, No 3 (2015)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Characteristics of tofu with higher a (0.89 to 0.90) and protein levels of 8% or more, made tofu to be a suitable medium for bacterial growth. This leads to out to be very easy to damage due to bacterial contamination. Contamination of bacteria is commonly found in the tofu because of contamination in the process making of tofu. Source of contamination can come out from the raw material, during the process of making tofu and hygienic sanitation level during processing. Generally, this study aimed to determine the level of contamination of Escherichia coli, Staphylococcus aureus, Bacillus cereus and spore-forming bacteria in the process of making tofu and study the properties of heat resistance of eachisolate. Phases of of the study started with the isolation and identification and then quantitative analysis of Escherichiawcoli, Staphylococcus aureus, Bacillus cereus and spore-forming bacteria in the tofu process from raw materials to end product, tofu, comprised from water and soybean, slurry, soymilk cooking, curd, whey and tofu. Isolates originating from the cooking process and the coagulation process was for testing the heat resistance (D value and Z value). D and Z values were calculated using linear regression. Escherichia coli found in the water, soybeans, soybean slurry, curd and tofu, the number 10 =4,83 min and the value of Z = 22.73°C. Staphylococcus aureus found in soybeans and curd, showed the number of 101-102 CFU/g. Escherichia coli GMP isolate had D60°C CFU/g. The Staphylococcus aureus GMP4 isolate, had D60°C 1=2.72 min and the value of Z = 18.87°C. The Staphylococcus aureus GMP 6 isolate, had D=2.54min and the value of Z = 18.18°C. Bacillus cereus found in the water, soybean, soybean slurry, soymilk cooking, curdand tofu, showed the number 102-103CFU/g. Bacillus cereus vegetative cells SK 2 had D=5.43 min and the value of Z = 22.72°C. Bacillus cereus vegetative cells SK 4 had D60°C 60°C =5.95 min and the value of Z = 22.22°C. Spore-forming bacteria found in water, soybean, soybean slurry from the grinding process, the process cooking of soymilk, the process of clotting, whey and tofu, showed the number of 102CFU/g.ABSTRAKKarakteristik tahu dengan a0,89-0,90 dan kadar protein 8% atau lebih, menjadikan tahu sebagai media yang cocok bagi pertumbuhan bakteri. Hal ini menyebabkan tahu menjadi sangat mudah rusak karena cemaran bakteri. Penelitian ini bertujuan untuk mengetahui tingkat cemaran Escherichia coli, Staphylococcus aureus, Bacillus cereus dan Bakteri pembentuk spora pada proses pembuatan tahu dan mempelajari sifat ketahanan panas dari masing-masing cemaran. Tahapan penelitian dimulai dari pengamatan proses pembuatan tahu, isolasi dan identifikasi dan analisa kuantitatif cemaran Escherichia coli, Staphylococcus aureus, Bacillus cereus dan bakteri pembentuk spora pada proses pembuatan tahu. Isolat yang berasal dari proses pemasakan dan proses penggumpalan digunakan untuk pengujian ketahanan panas dengan melihat nilai D dan Z menggunakan regresi linier. Escherichia coli ditemukan pada air, kedelai, bubur kedelai, gumpalan tahu dan tahu, dengan jumlah 10w1-10CFU/g. Isolat Escherichia coli dari proses penggumpalan (GMP), nilaiD60°C 2=4,83 menit dan nilai Z=22,73°C. Staphylococcus aureus ditemukan pada kedelai, gumpalan tahu dan tahu, dengan jumlah 10=2,72 menit dan nilai Z =18,87°C. Untuk isolat Staphylococcus aureus GMP 6, nilai D1CFU/g. Isolat Staphylococcus aureus GMP 4, memiliki nilai D60°C60°C =2,54 menit dan nilai Z =18,18°C. Bacillus cereus ditemukan pada air,kedelai, bubur kedelai, sari kedelai masak, gumpalan tahu dan tahu, dengan jumlah 102-10CFU/g. Sel vegetatif Bacilluscereus yang berasal dari sari kedelai (SK) 2, memiliki nilai D60°C3=5,43 menit dan nilai Z =22,72°C. Untuk sel vegetatif Bacillus cereus SK 4, memiliki nilai D60°C=5,95 menit dan nilai Z =22,22°C. Bakteri pembentuk spora ditemukan pada air, kedelai, bubur kedelai pada proses penggilingan, sari kedelai masak, gumpalan tahu, kecutan dan tahu, dengan jumlah 10CFU/g.

Isolasi dan Identifikasi Bakteri Asam Laktat Penghasil Inhibitor Enzim HMG-KoA Reduktase dari Bekasam Sebagai Agen Pereduksi Kolesterol Rinto Rinto; Ratih Dewanti; Sedarnawati Yasni; Maggy Thenawidjaja Suhartono
agriTECH Vol 35, No 3 (2015)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

The purpose of this research was to obtain statins producer bacteria as a HMG-CoA reductase (HMGR) enzyme inhibitor to reduced cholesterol biosynthesis. Stages of this research were the isolation of compactin and lovastatin resistant bacteria, statin production, analysis of culture extracts to inhibition of HMG-CoA reductase and identification of bacteria. The results showed that the 20 isolates of compactin and lovastatin resistant bacteria, there are 5 bacterial isolates produced statins. They were L3.3.4; C3.4.2; C3.3.5; C3.4.4 and L3.3.3; with the statins content were 9.491; 1.536; 0.065; 0.060; and 0.040 ppm. Selection of the 5 bacterial isolates resulted 2 bacteria which had inhibition ability to HMGR enzyme activity. They were Lactobacillus acidophilus and Lactobacillus delbruckii sp. delbruckii with inhibitory ability were 66.67% and 58.33%, respectively.ABSTRAKPenelitian ini bertujuan memperoleh bakteri penghasil statin sebagai inhibitor enzim HMG-KoA reduktase (HMGR), penghambat sintesis kolesterol. Tahapan penelitian yang dilakukan adalah isolasi bakteri yang resisten terhadap compactin dan lovastatin, produksi statin, uji penghambatan ekstrak dari kultur bakteri terhadap HMG-KoA reduktase dan identifikasi bakteri. Hasil penelitian menunjukan bahwa dari 20 isolat bakteri yang resisten terhadap compactin maupun lovastatin, terdapat 5 isolat bakteri yang potensial menghasilkan statin, yaitu isolat L3.3.4; C3.4.2; C3.3.5; C3.4.4 dan L3.3.3; dengan kandungan statin berturut-turut adalah 9.491; 1,536; 0,065, 0,060, dan 0,040 ppm. Seleksi terhadap 5 isolat menghasilkan 2 bakteri yang mempunyai kemampuan penghambatan terhadap aktivitas enzim ¸Â•ÝWtu Lactobacillus acidophilus dan Lactobacillus delbruckii sp. delbruckii dengan kemampuan penghambatan berturut-turut adalah 66,67% dan 58,33%.

Optimasi Media Fermentasi Aspergillus oryzae, Penghasil Antijamur Patogen Buah Kakao (Phytophthora palmivora) Rizka Aulia Rahma; Simon Bambang Widjanarko; Rofiq Sunaryanto; Yunianta Yunianta
agriTECH Vol 35, No 3 (2015)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Indonesia was known as a producer and exporter of cacao, but nowadays Indonesia had an issue in cacao production caused by microorganisms (Phytophtora palmivora) that capable of reducing the amount of cacao production each year. This study follows up a previous study that had found compounds that are actively against at Phytophtora palmivora from Aspergillus oryzae metabolites. In this study the compound will be produced in greater numbers to optimize fermentation medium. The first stage was conducted to determine the profile of the active compound and to analyze the best carbon, nitrogen source for Aspergillus oryzae fermentation medium. The second stage was designed by using Response Surface Method (RSM) with Central Composite Design (CCD) to optimize two variables in the fermentation medium, glucose concentration (the best carbon source) and the concentration of peptone (best nitrogen source). The expected response was the most active compounds percentage of the area. Data analysis was performed by Design Expert DX 7.1.5 program. The first stage of this study presumed that Tenuazonic acid compounds with a molecular weight of 198.1126 gram.mol was an antifungal compound produced by Aspergillus oryzae fungus to prevent Phythopthora palmivora fungus pathogens cacao pods. In addition the results are that glucose was the best carbon source (mean % relative area of antifungal compounds: 85.39%) and that peptone was selected as the best source of nitrogen (mean % relative area of antifungal compounds: 91.07%). The second stage showed the optimum conditions of fermentation medium antifungal Aspergillus oryzae was the composition of glucose 35.25 g/L and peptone 16.7 g/L. The combination of both compositions would yield a mean response of laboratory data % relative area of antifungal compounds 91.2217% and the estimated value (prediction) by Design Expert models 92.2936%. Difference in the estimated values (the response of the model) to the value of the results of response in laboratory experiments at 1.1614%, then it could be concluded that the model used was appropriate and able to explain the applied experimental data.ABSTRAKIndonesia dikenal sebagai produsen dan eksportir buah kakao, tetapi saat ini Indonesia memiliki masalah dalam produksi buah kakao dikarenakan adanya mikroorganisme penyebab penyakit (Phytophtora palmivora) yang menurunkan jumlah produksi buah kakao tiap tahunnya. Penelitian ini melanjutkan penelitian sebelumnya yang telah menemukan senyawa aktif yang bersifat antijamur terhadap Phytophtora palmivora dari metabolit Aspergillus oryzae. Pada penelitian ini senyawa tersebut akan diproduksi dalam jumlah yang lebih banyak melalui optimasi media fermentasi. Penelitian tahap I dilakukan untuk mengetahui profil senyawa aktif yang dominan dan mendapatkan sumber karbon, nitrogen yang terbaik untuk media fermentasi Aspergillus oryzae. Penelitian tahap II dirancang menggunakan Response Surface Method (RSM) dengan Central Composite Design (CCD) untuk mengoptimasi 2 variabel dalam media fermentasi yaitu konsentrasi glukosa (sumber karbon terbaik) dan konsentrasi pepton (sumber nitrogen terbaik). Respon yang diinginkan adalah persentase luas area senyawa aktif yang paling besar. Analisis data dilakukan dengan program Design Expert D.X. 7.1.5. Tahap I penelitian ini menduga bahwa senyawa Tenuazonic acid dengan bobot molekul 198.1126 gram.mol-1 adalah senyawa antijamur yang dihasilkan jamur Aspergillus oryzae untuk jamur patogen buah kakao Phythopthora palmivora. Selain itu, diperoleh hasil bahwa glukosa merupakan sumber karbon terbaik (rerata % relatif luas area senyawa antijamur: 85.39%) dan pepton dipilih sebagai sumber nitrogen yang terbaik (rerata % relatif luas area senyawa antijamur: 91,07%). Penelitian tahap II menghasilkan kondisi optimum media fermentasi antijamur dari A. oryzae dengan komposisi glukosa sebesar 35,25 gram/L dan pepton sebesar 16,7 gram/L. Kombinasi kedua komposisi tersebut akan menghasilkan data laboratorium respon rerata % relatif luas area senyawa antijamur sebesar 91,2217% dan nilai dugaan (prediksi) oleh model Design Expert sebesar 92,2936%. Perbedaan nilai dugaan (respon dari model) dengan nilai respon hasil percobaan di laboratorium sebesar 1,1614% sehingga dapat disimpulkan bahwa model yang digunakan telah sesuai dan mampu menjelaskan data percobaan yang digunakan.

Daya Serap Air Sebagai Acuan untuk Menentukan Volume Air dalam Pembuatan Adonan Roti dari Campuran Tepung Terigu dan Tepung Singkong Rusdin Rauf; Dwi Sarbini
agriTECH Vol 35, No 3 (2015)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Cassava flour substitution in the dough preparation often result in dough that is not properly hydrated. The purpose of the research was to determine the proper water volume in making dough from wheat flour and cassava flour mixtures. The research was conducted by analyzing amylograph characteristic and water absorption capacity of wheat flour and cassava flour mixtures. The water absorption was used as a reference to determine the volume of water in the dough preparation of mixed flours. Then, the elongation properties of the doughs were measured. Amylograph data indicated that wheat flour displayed a higher temperatur stability than cassava flour. The more portion of cassava flour, the lower its thermal stability. The water absortion of cassava flour was higher than wheat flour. The increasing of water absorbtion, in line with the increasing of cassava flour portion, which gave a linear trend, R= 0.972. Based on the technique of proportional to water absorption in determine the water volume, the biggest tensile strength of dough was revealed by wheat flour:cassava flour 100:0 and 90:10. However, the highest strain displayed by dough of wheat flour:cassava flour 100:0.ABSTRAKSubstitusi tepung singkong dalam pembuatan adonan roti seringkali menghasilkan adonan yang tidak terhidrasi dengan baik. Tujuan dari penelitian ini adalah untuk menentukan volume air yang tepat dalam pembuatan adonan dari campuran tepung terigu dan tepung singkong. Penelitian dilakukan dengan menganalisis sifat amilografi dan daya serap air dari campuran tepung terigu dan tepung singkong. Data daya serap air dijadikan acuan dalam penentuan volume air pada pembuatan adonan dari campuran tepung terigu dan tepung singkong. Kemudian dilakukan analisis elongasi adonan. Hasil amilografi menunjukkan bahwa tepung terigu lebih stabil terhadap panas dibanding tepung singkong. Makin besar porsi penambahan tepung singkong, semakin kecil stabilitas panasnya. Tepung singkong menunjukkan daya serap air yang lebih tinggi dibanding tepung terigu. Peningkatan daya serap air dari campuran tepung, seiring dengan peningkatan porsi tepung singkong, yang memberikan kecenderungan linear, dengan nilai R = 0,972. Berdasarkan teknik proporsional dengan daya serap air dalam menentukan volume air, tensile strength terbesar diberikan oleh adonan dari tepung terigu:tepung singkong 100:0 dan 90:10. Sedangkan strain tertinggi ditunjukkan oleh adonan campuran tepung terigu:tepung singkong 100:0.

Penggunaan Asap Cair Tempurung Kelapa untuk Menurunkan Kadar Timbal (Pb) pada Biji Kedelai (Glycine max) Sri Hartati; Purnama Darmadji; Yudi Pranoto
agriTECH Vol 35, No 3 (2015)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Liquid smoke of coconut shell has functional properties as bioflavor, preservative, and chelating agent, because it contains the active compounds of phenol, carbonyl, and acid. But the use of liquid smoke as chelating agent had not been developed. A study on chelation of heavy metal Pb by coconut shell liquid smoke on soybean seeds has been conducted. The aimed of the study was to evaluate the effectiveness of liquid smoke in the reducing heavy metals Pb in soybean seeds, evaluate the change in the components of the liquid smoke was used for chelation heavy metals Pb, and evaluate the influence of the phenol, carbonyl, and acid components in the chelation heavy metals Pb in soybean seeds. Liquid smoke of coconut shell pyrolysis has a specific gravity of 1.01 g/ml, pH 1.81, phenol 1.20%, carbonyl 5.75%, and acid compounds 8.40%. Soybean seeds soaked in coconut shell liquid smoke with various concentration of 0% (control/aquademineralisa); 12.5%; 25%; 50%; and 100% for 2 hours. Levels of heavy metals Pb was analyzed by Atomic Absorption Spectrophotometer. The changes of liquid smoke compounds such as pH, specific gravity, phenol, carbonyl, and acid was analyzed. The influence of the components of liquid smoke to the reduction of the heavy metals Pb was also analyzed. Model experiment was made from soybean seeds that have been contaminated by Pb (NO standard solutions with a concentration of 2 ppm. The results showed the higher the concentration of liquid smoke is used for soaking the decreased levels of heavy metals Pb is also getting bigger. The liquid smoke 100% (without 3)2dilution) gives the best reducing effect that can reduce heavy metal Pb 63.41%. An increase inpH, a decrease in phenol levels, decreased levels of the carbonyl, and decreased levels of the acid inliquid smokethat used for soaking indicatesthat the component has been successfully chelated the heavy metals Pb in soybean seeds.The phenol components of liquid smoke give the highest reducing effect 50.09%, followed by acid compounds 45.67%, and carbonyl compounds 42.21%.ABSTRAKTelah dilakukan penelitian tentang khelasi logam berat Pb pada biji kedelai dengan menggunakan asap cair tempurung kelapa. Tujuan penelitian adalah untuk evaluasi efektivitas asap cair dalam menurunkan kadar logam berat Pb pada biji kedelai, evaluasi perubahan komponen penyusun asap cair setelah digunakan untuk khelasi logam berat Pb, dan evaluasi pengaruh dari komponen penyusun asap cair dalam menurunkan kadar logam Pb pada biji kedelai. Biji kedelai direndam dalam asap cair tempurung kelapa dengan variasi konsentrasi 0% (kontrol atau aquademineralisa); 12,5%; 25%; 50%; dan 100% selama 2 jam. Parameter yang diamati adalah penurunan kadar Pb pada biji kedelai, perubahan pH, senyawa fenol, karbonil, dan asam yang terdapat dalam asap cair setelah proses khelasi, dan pengaruh komponen senyawa fenol, karbonil, dan asam terhadap penurunan kadar logam Pb pada biji kedelai. Penelitian ini menggunakan rancangan acak lengkap (RAL) dengan tiga kali ulangan. Model percobaan dibuat dengan biji kedelai yang dicemari larutan Pb(NO3)konsentrasi 2 ppm. Hasil penelitian menunjukkan bahwa semakin tinggi konsentrasi asap cair yang digunakan untuk perendaman maka penurunan kadar logam berat Pb juga semakin besar. Asap cair dengan konsentrasi 100% (tanpa pengenceran) memberikan efek penurunan kadar logam berat Pb yang paling baik yaitu sebesar 63,41%. Adanya kenaikan pH, penurunan kadar fenol, penurunan karbonil, dan penurunan kadar asam pada asap cair yang telahdigunakan untuk perendaman menunjukkan bahwa komponen asap cair tersebut telah berhasil mengkhelat logam Pb pada biji kedelai. Komponen senyawa fenol memberikan efek penurunan kadar Pb yang paling tinggi yaitu 50,09%, diikuti oleh komponen asamsebesar 45,67%, dan komponen karbonil sebesar 42,21%.

Pengaruh Jenis Pengemas terhadap Retensi Karoten, Sifat Fisik dan Kimia Gula Kelapa yang Diperkaya Minyak Sawit Merah Selama Penyimpanan Vicencius Prihananto; Hidayah Dwiyanti
agriTECH Vol 35, No 3 (2015)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

The addition of red palm oil in palm sugar will affect the content and retention of carotene as well as physical and sensory properties of the product during storage which were also influenced by packaging types. This study aimed to evaluate the changes in physical, chemical and carotene retention during storage of palm sugar. Palm sugar enriched with red palm oil was made by addition of two types of red palm oil (CPO and RPO ) and the amount of the addition (30 ml , 60 ml and 90 ml ) / 10 L coconut sap, after that packed with a single packaging (polypropylene, PP) and double packaging (PP + brown paper ) and stored for 2 months. After stored for 2 months, the level of total carotenoids of coconut palm sugar enriched with RPO decreased between 4.99 to 49.79 % with carotene content between 703 µg/100g up to 13383 µg/100 g. The decreased level of total carotene in first month and second month storage of coconut palm sugars enriched with RPO was higher (17.48 % and 24.47 %) compared to coconut palm sugar enriched with CPO (7.47% and 12.95 %) (p<0.05). The use of double packaging (polypropylene plastic + brown paper) is able to inhibit the decrease in total carotenoid up to 4.00 % to 6.67 %, better than the single packaging. The longer the storage, moisture content of product increased. However, after stored up to 2 months, the water content in all treatments was in range of SNI-01-3743-1995 standard (< 10 %) which is between 8.55 % up to 9.94 %.ABSTRAKPenambahan minyak sawit merah pada gula kelapa akan berpengaruh terhadap kandungan dan retensi karoten, serta sifat fisik dan sensori produk selama penyimpanan yang juga dipengaruhi oleh jenis pengemas. Penelitian bertujuan untuk mengevaluasi perubahan sifat fisik, kimia dan retensi karoten selama penyimpanan gula kelapa. Gula kelapa yang diperkaya minyak sawit merah dibuat dengan penambahan dua jenis minyak sawit merah (CPO dan RPO) dan jumlah penambahannya (30 ml, 60 ml dan 90 ml) / 10 L nira kelapa, serta dikemas dengan pengemas tunggal (plastik polypropilene/PP) dan pengemas ganda (plastik PP + kertas coklat). Makin lama penyimpanan terjadi penurunan kekerasan tekstur, retensi dan kadar total karoten, sebaliknya untuk parameter kadar air dan kadar gula reduksi terjadi peningkatan. Setelah disimpan selama 2 bulan, kadar total karoten gula kelapa yang diperkaya karoten dari CPO maupun RPO turun antara 4,89 % - 49,79 % dengan kadar karoten antara 703 µg/100 g – 1338,3 µg/100 g. Makin banyak jumlah penambahan CPO maupun RPO, persentase penurunan total karoten selama penyimpanan makin kecil. Penurunan kadar total karoten bulan ke-1 dan ke-2 pada gula kelapa yang diperkaya RPO lebih tinggi (17,48 % dan 24,48 %) dibandingkan gula CPO (7,47 % dan 12,95 %) (p<0.05). Penggunaan pengemas ganda plastik polypropylene dengan kertas coklat (payung) mampu menghambat penurunan total karoten hingga 4,00 % sampai 6,67 % lebih baik dibandingkan pengemas tunggal. Makin lama penyimpanan, kadar air produk makin meningkat. Namun demikian hingga penyimpanan selama 2 bulan, kadar air produk pada semua perlakuan masih dalam kisaran standar SNI-013743-1995 (< 10 %), yaitu antara 8,55 % - 9,94 %.

Dampak Kebijakan Pembatasan Impor Bawang Merah terhadap Usahatani Bawang Merah di Kabupaten Probolinggo Mohammad Wahyudin; Mochmammad Maksum; Henry Yuliando
agriTECH Vol 35, No 3 (2015)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

On January - August 2013, the government implemented a quota-based import restriction policy for the shallot. While on September 2013, the government then changed it into a price-based import restriction. This research aims to determine how the impact of the quota-based and price-based import restrictions to the level of protection, profitability, and efficiency of farm. The method of analysis used in this research is PAM (Policy Analysis Matrix) method. The results showed that the quota-based import restriction policy has increased 141%, 270%, and 32% of protection, profitability, and efficiency of shallot farming, respectively. The price-based import restriction policyhas decreased 46% and 233% of protection and profitability of shallot farming, however it has increased 1% of the efficiency.ABSTRAKPada Januari - Agustus 2013, pemerintah menerapkan kebijakan pembatasan impor berbasis kuota terhadap komoditas bawang merah. Selanjutnya, pada September 2013 pemerintah mengubah kebijakan tersebut menjadi pembatasan impor berbasis harga. Penelitian ini bertujuan untuk mengetahui bagaimana dampak kebijakan pembatasan impor berbasis kuota dan berbasis harga terhadap proteksi, profitabilitas, dan efisiensi usahatani bawang merah. Metode analisis yang digunakan dalam penelitian ini adalah metode Policy Analysis Matrix (PAM). Hasil penelitian menunjukkan bahwa kebijakan pembatasan impor berbasis kuota telah meyebabkan proteksi, profitabilitas, dan efisiensi usahatani bawang merah meningkat 141%, 270%, dan 32%. Sedangkan kebijakan pembatasan impor berbasis harga menyebabkan proteksi dan profitabilitas usahatani turun 46% dan 233%, dan efisiensi usahatani meningkat 1%.

Perubahan Mutu Gudeg Kaleng “Bu Tjitro” Selama Penyimpanan Asep Nurhikmat; Bandul Suratmo; Nursigit Bintoro; Suharwadji Sentana
agriTECH Vol 35, No 3 (2015)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Gudeg is a traditional food from Yogyakarta with a short shelf life. To extend the shelf-life, gudeg packed with cans. Research on quality changes during storage of canned gudeg had been done. The study was conducted in order to determine quality changes that occur in canned gudeg during the storage period. Canned gudeg material consisted of gudeg jackfruit, eggs, chicken, krecek and tolo beans with size cans of 72.63 x 53.04 mm (Ø x h). Observations canned gudeg quality performed for 18 months with 3-month interval includes the analysis of physical, chemical, microbiological and organoleptic. The results showed that there were quality changes, including 0.6 points of pH, 36% of soluble protein, 20.15 ppm of aluminum content, 0.06 mg malonaldehyde/kg for TBA value, 5.1 points color brightness and 2 CFU/g total microbial, as well as decline in15.77 ppm sulfur and organoleptic quality parameters. Canned gudeg hold for 15 months with 68.49% of water contents; of 1.56% ash content; 8.40% of protein content; 12.74% of fat content and 5.60% of fiber content.ABSTRAKGudeg adalah makanan tradisional dari Yogyakarta dengan masa simpan pendek. Untuk memperpanjang masa simpannya, gudeg dikemas dengan kaleng. Penelitian tentang perubahan mutu gudeg kaleng selama penyimpanan telah dilakukan. Penelitian dilakukan dengan tujuan untuk mengetahui perubahan mutu yang terjadi pada gudeg kaleng selama masa penyimpanan. Bahan gudeg yang dikalengkan terdiri dari gudeg nangka, telur, daging ayam, krecek dan kacang tolo dengan kemasan kaleng ukuran 72,63 x 53,04 mm (Ø x h). Pengamatan mutu gudeg kaleng dilakukan selama 18 bulan dengan interval 3 bulan meliputi analisis fisika, kimia, mikrobiologi, dan organoleptik. Penelitian menghasilkan perubahan yang terjadi pada gudeg kaleng selama penyimpanan antara lain kenaikan pH 0,6 poin, protein terlarut 0,73%, kadar aluminium 20,15 ppm, nilai TBA 0,06 mg malonaldehid/kg, kecerahan warna 5,1 poin dan total mikroba 2 CFU/g. Selama penyimpanan penurunan sulfur 15,77 ppm dan penurunan parameter mutu organoleptik. Gudeg kaleng tahan selama 15 bulan dengan kadar air 68,49%; kadar abu 1,56%; kadar protein 8,40%; kadar lemak 12,74%, dan kadar serat 5,60%.

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Abstract

Abstract

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

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

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