Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

agriTECH

agritech
Website

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 15 Documents

1 2

Search results for , issue "Vol 38, No 1 (2018)" : 15 Documents clear

Karakterisasi Potensi dan Komponen Pembatas pada Biji Sorghum Lokal Varietas Coklat sebagai Tanaman Pangan ( Characterisation of Potential and Limiting Factors of Locally-Grown Brown Sorghum as Staple Food) Erni Sofia Murtini; Ahmad Subagio; Sudarminto Setyo Yuwono; Irawan Setya Wardhana; Sulthon Fathoni
agriTECH Vol 38, No 1 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Brown sorghum is one of cereals with high prospective to be developed as a new source of staple food in Indonesia because it is easily cultivated and has high productivity. However, this grain has been overlooked because of limited available information of its potential used. Aims of this research are to evaluate the sorghum grain to comprehensibly obtain the basic information of its potential and limited factors as staple food. Research results that locally grown brown sorghum grain obtained from Grati, Pasuruan had a high milling yield (77.99±1.39%). The polished grain was composed by 79.40±4.63% starch and 10.62±0.01% protein. It indicated that this sorghum grain was highly prospective to be developed as a staple food. However, the grain also had some restrictive factors such as tannin (8.83±0.05 mg/g), phytic acid (1.80±0.47 mg/g) and anti-trypsin (17.18±2.38 unit/g). The main fraction of protein sorghum grain was Kafirin where this fraction contains a high disulphide bond (550.43±4.92 µmol/g). Bioavailability of protein sorghum evaluated by in vivo and in vitro methods were 51% and 48.45%, respectively. These values could be considered as low digestibility. The sorghum grain had dimension of 3.9±0.7 mm length, 3.2±0.2 mm width and 1.8±0.01 mm thick. Polishing of sorghum grain using rice polished machine could not effectively removed the testa layer due to different dimension of both sorghum and rice grain. This result suggests that appropriate assembly of equipment to effectively polish sorghum grain is needed. Presence of the anti- nutritional compounds and the low digestibility of protein sorghum prove that the brown sorghum grains require further processing technology such as fermentation to be more suitable as a staple food. ABSTRAKSorghum coklat merupakan biji-bijian yang potensial dikembangkan menjadi tanaman pangan di Indonesia. Kelebihan tanaman ini adalah kemudahannya untuk dibudidayakan dan produktivitas yang tinggi. Namun keterbatasan informasi tentang potensinya, membuat biji sorghum kurang diperhatikan. Tujuan Penelitian ini adalah untuk mendapatkan informasi dasar tentang potensi dan pembatas biji sorghum lokal varietas coklat sebagai tanaman pangan. Penelitian dilakukan dengan menganalisa biji sorghum yang telah disosoh dengan penyosoh beras 4 kali. Hasil penelitian menunjukkan biji sorghum lokal varietas coklat yang didapatkan dari Grati Pasuruan ini cukup berpotensi sebagai tanaman pangan. Biji sosoh mempunyai kadar pati 79,40±4,63% dan protein yang tinggi yaitu 10,62±0,01%, selain itu rendemen sosoh juga tinggi mencapai 77,99±1,39%. Namun demikian, sorghum mengandung senyawa antigizi seperti tanin yang mencapai 8,83±0,05 mg/g, senyawa fitat 1,80±0,47 mg/g dan antitripsin 17,18±2,38 unit/g. Protein sorghum didominasi (71,40±1,29%) oleh kafirin yang memiliki ikatan disulfit tinggi (550,43±4,92 µmol/g). Daya cerna protein sorghum tergolong rendah terlihat dari uji secara in vivo 0,51 atau 51% dan in vitro dengan enzim tripsin sebesar 48,45%. Dimensi biji sorghum dengan rata-rata 3,9±0,7 mm panjang, 3,2±0,2 mm lebar dan 1,8±0,01 mm tebal berbeda dengan biji beras sehingga kurang cocok bila dilakukan penyosohan dengan penyosoh beras. Kandungan senyawa antigizi yang cukup tinggi dan keberadaan ikatan disulfit yang cukup besar serta ditunjang oleh daya cerna protein yang rendah, menunjukkan biji sorghum perlu penanganan lanjutan misalnya dengan proses fermentasi untuk meningkatkan potensinya sebagai bahan pangan.

Efektivitas Grass Barrier (Rumput Penghalang) terhadap Pengendalian Erosi Angin Di Merapi Beny Harjadi; Pranatasari Dyah Susanti
agriTECH Vol 38, No 1 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Mount Merapi eruption in 2010 that discharged more than 130 million m3 of landfill material brought impact on the thickness and height of caused damage to the yard and agricultural land. After mining heap of materials in the form of boulders, stones, gravels, and gravel to sand, RLKT activities (Rehabilitation and Soil Conservation) needs to be pursued to mobilize the people in the village of Kepuharjo. Cooperation between BPTKPDAS Solo with Kepuharjo Village community is incorporated in FPL PALEM (Environmental Care Forum Merapi Slope-Nature Lovers) by performing RLKT barrier in the form of grass planting (Grass Barriers) and manure treatment with the observation of surface erosion due to the effects of wind on the rorak. The purpose of this study was to quantify the effectiveness of grass barrier for wind erosion control at the land formerly affected by eruption at Merapi Mountain. The results show that the combination of grass and manure was able to suppress the erosion up to 88%. Effective rorak types were derived from bucket and it is not recommended that rorak includes a stick for a heap of unstable soil particles. Therefore, the usage of plastic is not suggested as it is easily torn. ABSTRAKBencana erupsi Gunung Merapi tahun 2010 telah mengeluarkan material lebih dari 130 juta m3 dan berdampak pada penimbunan material yang tebal dan tinggi, sehingga menyebabkan kerusakan lahan pekarangan dan pertanian. Setelah dilakukan penambangan, timbunan material berupa batu besar, batu, kerakal, kerikil sampai pasir, maka perlu diupayakan kegiatan RLKT (Rehabilitasi Lahan dan Konservasi Tanah) dengan menggerakkan masyarakat di Desa Kepuharjo. BPPTPDAS Solo telah bekerjasama dengan masyarakat Desa Kepuharjo yang tergabung dalam FPL PALEM (Forum Peduli Lingkungan-Pecinta Alam Lereng Merapi) dengan melakukan RLKT berupa rumput penghalang (Grass Barriers) dan perlakuan pupuk kandang dengan pengamatan erosi permukaan akibat pengaruh angin pada rorak. Tujuan penelitian ini adalah untuk menghitung tingkat efektivitas rumput penghalang terhadap pengendalian erosi angin pada lahan bekas erupsi di Merapi. Hasil yang diperoleh bahwa rumput dan kombinasi dengan pupuk kandang mampu menekan erosi sampai 88%. Jenis rorak yang efektif adalah rorak yang berasal dari ember. Tidak disarankan menggunakan rorak dengan stik di dalamnya karena timbunan partikel tanah disekitar rorak yang tidak stabil, ataupun dengan plastik karena akan mudah robek.

Formulasi Bubuk Minuman Berbahan Dasar Beras Hitam (Oryza sativa L. indica) untuk Lansia Penyandang Diabetes Mellitus Tipe 2 Rianita Pramitasari; Mary Astuti; Yustinus Marsono
agriTECH Vol 38, No 1 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

The aim of this research was to get a formula of black rice powder beverage for elderly with type 2 diabetes mellitus. The formulation was done by mixing gelatinized black rice powder with black soybean protein extract, black rice anthocyanin extract, aspartame, and salt based on total energy calculation, taste, and anthocyanin content. The analysis included chemical composition (moisture, ash, total protein, total lipid, and carbohydrate content) of gelatinized black rice, black soybean protein extract, and total anthocyanin content. Nutritional composition, sensory, antioxidant, and recommended dietary allowance of beverage powder was examined. The result showed that each serving with weight 19.91 g/200 mL contained 100 mg of anthocyanin, 10.34 g of carbohydrate, 5.91 g of protein, and 0.77 g of fat. The beverage had 4.8 (neutral-rather like) of preference level based on sensory analysis in elderly. The antioxidant activity based on DPPH radical scavenging ability was 93.33±0.95 % of and could suffice 3.6–4.52% of total energy/serving based on recommended dietary allowance. ABSTRAKPenelitian ini bertujuan untuk mendapatkan formula minuman bubuk berbahan dasar beras hitam untuk lansia penyandang diabetes mellitus (DM) tipe 2. Formulasi minuman bubuk dilakukan dengan mencampur bubuk nasi beras hitam dengan ekstrak protein kedelai hitam, ekstrak antosianin beras hitam, aspartam, dan garam dapur berdasarkan perhitungan energi total, cita rasa, dan kadar antosianin total. Analisis meliputi komposisi kimia (kadar air, abu, protein total, lemak total, dan karbohidrat) bubuk nasi beras hitam, ekstrak protein kedelai hitam dan kadar antosianin total. Pada minuman bubuk hasil formulasi dihitung komposisi nilai gizi, uji kesukaan, aktivitas antioksidan, dan Angka Kecukupan Gizi (AKG). Hasil penelitian menunjukkan bahwa satu takaran saji dengan berat 19,91 g/200 mL mengandung antosianin 100 mg/takaran saji, karbohidrat 10,34 g, protein 5,91 g, dan lemak 0,77 g. Minuman yang dihasilkan memiliki tingkat kesukaan sebesar 4,8 (netral-agak menyukai) berdasarkan uji sensoris pada lansia, memiliki aktivitas antioksidan 93,33±0,95% berdasarkan kemampuan penangkapan radikal DPPH, dan mampu mencukupi 3,68–4,52% kebutuhan energi total/takaran saji berdasarkan AKG lansia per hari.

Penerapan Fuzzy TOPSIS dalam Penentuan Lokasi Kawasan Pengembangan Rantai Pasok Bioenergi Kelapa Sawit Petir Papilo; Taufik Djatna; Yandra Arkeman; Marimin Marimin
agriTECH Vol 38, No 1 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

This study aims to obtain the best location of the target area of agro-industrial development of bioenergy in the supply chain. Through a systems approach, using fuzzy TOPSIS, an analysis of various key criteria was conducted, including availability of raw materials, land conditions and prices, the ease of access to transportation, the distance to the city center, the availability of labor at the target location, availability of infrastructure – such as water and electricity, the use of the location and orientation of multiplier effect. Based on the results of the analysis that has been done, from the five areas being targeted for locations of bioenergy agro-industry development in the province of Riau, including Industrial Area Kuala Enok; Palm Oil Region in Rokan Hulu; Pelintung Dumai Industrial Area; Palm Oil Region in Bagan Batu Rokan Hilir and Teknopolitan Region in Pelalawan, the one that has been voted the best location is Pelintung Dumai Industrial Area. ABSTRAKPenelitian ini bertujuan untuk memperoleh lokasi terbaik yang menjadi target kawasan pengembangan agroindustri bioenergi dalam satu mata rantai pasokan. Melalui pendekatan sistem, dengan menggunakan metode fuzzy TOPSIS, dilakukan analisis terhadap berbagai kriteria penting diantaranya ketersediaan bahan baku, kondisi lahan dan harga, kemudahan akses transportasi, jarak lokasi dengan pusat kota, ketersediaan tenaga kerja pada lokasi sasaran, ketersediaan infrastruktur seperti air dan listrik, orientasi pemanfaatan lokasi serta multiflier effect. Berdasarakan hasil analisis yang telah dilakukan, dari lima target kawasan yang menjadi sasaran lokasi pengembangan agroindustri bioenergi di Provinsi Riau, diantaranya Kawasan Industri Kuala Enok, Kawasan Perkebunan Kelapa Sawit di Rokan Hulu, Kawasan Industri Pelintung Dumai, Kawasan Perkebunan Kelapa Sawit di Bagan Batu Rokan Hilir dan Kawasan Teknopolitan di Kabupaten Pelalawan, telah terpilih lokasi terbaik, yakni di Kawasan Industri Pelintung Dumai

Stabilitas Minuman Isotonik Antosianin Beras Ketan Hitam dengan Senyawa Kopigmentasi Ekstrak Bunga Belimbing (Averrhoa Carambola) Nanik Suhartatik; Akhmad Mustofa
agriTECH Vol 38, No 1 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Anthocyanin is a bioactive component which give basic color of red, purple, and blue to blackish foodstuffs. So, the anthocyanin could be developed as a natural pigment in foodstuffs, but it is unstable. Several studies have been conducted to improve its stability in the food system. The purpose of this study was to analyze the stability of anthocyanin in isotonic beverages as food system with the addition of copigmentation compound derived from star fruit flower extract. The stability of the isotonic beverage was tested at some heating temperatures and storage periods. Isotonic drink were formulated using anthocyanin extracted from glutinous rice flour. Isotonic beverages consist of sucrose, fructose, sodium benzoate, citric acid, KCl, and K2PO4 which were regulated containing anthocyanin equivalent to 25 mg/L. Added ingredients to increase the stability of anthocyanin in isotonic drinks was 5% star-fruit flower extract. During storage, the phenolic content, anthocyanin, and antioxidant activity of isotonic beverages were observed. The results showed that heating process declined the anthocyanin content significantly, from 25 mg/L to 2.82 mg/L. Decreased level of anthocyanin also occurred during storage. Heating at 50, 65, and 70 °C gave no significant difference of phenol content. Similar to its ability to capture DPPH radicals (% RSA DPPH, radical scavenging activity 2.2-diphenyl-1-picrylhydrazyl). Increasing the temperature from 50 to 70 °C would increase the stability of anthocyanin, total phenolic, and also the antioxidant activity. Meanwhile, storage would decrease the anthocyanin content but increase the phenolic content and the antioxidant activity. ABSTRAKAntosianin merupakan komponen bioaktif dan warna dasar bahan makanan yang berwarna merah, ungu, biru hingga kehitaman. Antosianin berpotensi dikembangkan sebagai pewarna alami untuk makanan, akan tetapi pigmen ini bersifat tidak stabil. Beberapa penelitian telah dilakukan untuk meningkatkan stabilitasnya dalam sistem pangan. Tujuan dari penelitian ini adalah untuk menganalisis stabilitas antosianin dalam minuman isotonik sebagai sistem pangan dengan penambahan senyawa kopigmentasi yang berasal dari ekstrak bunga belimbing. Stabilitas minuman isotonik diuji pada beberapa suhu pemanasan dan periode penyimpanan. Minuman isotonik diformulasikan menggunakan antosianin hasil ekstraksi dari tepung beras ketan hitam. Minuman isotonik terdiri dari sukrosa, fruktosa, Na-benzoat, asam sitrat, KCl, dan K2PO4 yang diatur mengandung antosianin setara dengan 25 mg/L. Bahan yang ditambahkan untuk meningkatkan stabilitas antosianin pada minuman isotonik adalah ekstrak bunga maya (belimbing) 5%. Selama penyimpanan diamati kadar fenolik, kadar antosianin, dan aktivitas antioksidan dari minuman isotonik. Hasil penelitian menunjukkan bahwa proses pemanasan menyebabkan penurunan yang signifikan dari kadar antosianin, dari semula 25 mg/L menjadi hanya 2,82 mg/L saja. Penurunan kadar antosianin terjadi juga selama penyimpanan. Perlakuan suhu 50, 65, dan 70 °C memberikan perbedaan kadar fenolik yang tidak signifikan. Begitu pula dengan kemampuannya untuk menangkap radikal DPPH (% RSA DPPH, radical scavenging activity 2,2-diphenyl-1-picrylhydrazyl). Kenaikan suhu dari 50 menjadi 70 °C, meningkatkan stabilitas antosianin, meningkatkan kadar fenolik, dan aktivitas antioksidannya. Sementara proses penyimpanan membuat kadar antosianin semakin menurun dan meningkatkan kadar fenolik serta aktivitas antioksidannya.

Karakteristik Sifat Fisiko-Kimia dan Fungsional Pati Sagu Ihur (Metroxylon sylvestre) Dimodifikasi dengan Hidrolisis Asam Febby Jeanry Polnaya; Alfredo Andelson Huwae; Gilian Tetelepta
agriTECH Vol 38, No 1 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

The objective of this study was to characterize modified Ihur sago starch as affected by treatment of acid hydrolysis. A completely randomized experimental non-factorial design was used in this research with four levels of treatments, i.e. native ihur sago starch, HCl concentrations of 1.1 N, 2.2 N, or 3.3 N, subsequently. Physical properties such as color, swelling power, solubility, and paste clarity were measured in this research. Moisture, ash, and amylose content were determined as chemical properties, while the resistant starch (RS) content was determined for its functional properties. Results showed that starch treated with acid hydrolysis caused changes to physical properties in comparison with native starch. These included higher (80.93–81.89) degree of whiteness (L*) than native starch (80.29), lower redness (a*) and yellowness (b*) than native (8.26 and 18.24) having the value of 5.13–6.34, and 13.21–15.39, respectively. Acid hydrolysis not only caused a decrease in swelling power (43.88–50.56%), but also an increase in solubility (8.92–12.34%) and paste clarity (74.70–77.73% T) compared to native starch. Higher moisture and ash content having the value of 8.72–15.01% and 0.22–0.37%, correspondingly but lower amylose (18.29–27.22%) and RS content were obtained by acid hydrolysis starch in contrast to native starch. The modified starch has improved heat stability with smaller breakdown viscosity, and setback viscosity less than native starch, and is easily to gelatinize. ABSTRAKPenelitian ini bertujuan untuk mengkarakteristik pati sagu ihur alami (PSIA) yang dimodifikasi dengan perlakuan hidrolisis asam. Rancangan yang digunakan yaitu rancangan acak lengkap non-faktorial dengan empat taraf perlakuan yaitu PSIA, hidrolisis asam (PSIHA) menggunakan HCl 1,1 N, 2,2 N, atau 3,3 N. Parameter yang diukur meliputi karakteristik fisik antara lain warna, kemampuan menggelembung, daya larut, kejernihan pasta, dan sifat amilografi. Karakteristik kimia meliputi kadar air, kadar abu, dan amilosa sedangkan karakteristik fungsional yaitu kadar pati resistan (RS). Hasil penelitian menunjukan bahwa perlakuan hidrolisis asam menyebabkan perubahan terhadap sifat fisik warna pati dimana nilai kecerahan (L*) pati hidrolisis asam (80,93–81,89) lebih tinggi dibandingkan PSIA (80,29). Sebaliknya nilai kemerahan (a*) dan kekuningan (b*) PSIHA (5,13–6,34 dan 13,21–15,39) lebih rendah dibandingkan PSIA (8,62 dan 18,24). Perlakuan asam juga menyebabkan kemampuan menggelembung PSIHA (43,88–50,65%) mengalami penurunan dibandingkan PSIA, tetapi meningkatkan daya larut (8,92–12,34%) dan kejernihan pasta (74,70–77,73% T). Untuk sifat kimia, kadar air pati sagu hidrolisis asam (8,72–15,01%) dan kadar abu (0,22–0,37%) relatif lebih tinggi dibandingkan pati alaminya, namun perlakuan asam menurunkan kadar amilosa (18,29–27,22%) dan kadar RS (0,06–0,37%). PSIHA memiliki kestabilan yang lebih baik selama pemanasan dengan breakdown viscosity yang lebih kecil dibandingkan dengan PSIA, serta kecenderungan teretrogradasi lebih rendah, yaitu ditunjukkan nilai setback viscosity yang rendah, dan lebih mudah mengalami gelatinisasi.

Mikroenkapsulasi Fikosianin dalam Maltodekstrin-Alginat: Formulasi dan Karakterisasi Retno Ayu Kurniasih; Lukita Purnamayati; Ulfah Amalia; Eko Nurcahya Dewi
agriTECH Vol 38, No 1 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Fikosianin merupakan sumber pewarna biru alami yang dapat diekstrak dari Spirulina sp. Karakteristik dari fikosianin adalah tidak stabil oleh cahaya, suhu, dan pH selama proses pengolahan dan penyimpanan. Metode mikroenkapsulasi dapat digunakan untuk melindungi fikosianin dari pengaruh eksternal di mana jenis dan konsentrasi enkapsulan yang digunakan dapat mempengaruhi karakteristik mikrokapsul fikosianin yang dihasilkan. Tujuan dari penelitian ini adalah untuk mengetahui formulasi terbaik dan karakterisasi mikrokapsul fikosianin dari Spirulina sp. dengan maltodekstrin dan alginat sebagai enkapsulan. Mikrokapsul diproduksi dengan lima perbedaan konsentrasi alginat dalam maltodekstrin, yaitu 0 %; 0,2 %; 0,4 %; 0,6 %; dan 0,8 % (b/b). Total enkapsulan yang digunakan adalah 10 % dari larutan mikropartikel fikosianin. Hasil penelitian menunjukkan bahwa peningkatan konsentrasi alginat dapat meningkatkan kadar fikosianin, kadar air, efisiensi enkapsulasi, bulk density, intensitas warna biru, dan ukuran partikel serta dapat memperbaiki morfologi mikrokapsul yang dihasilkan. Mikrokapsul fikosianin dengan konsentrasi alginat 0,6 % dan maltodekstrin 9,4 % memiliki kadar fikosianin, efisiensi enkapsulasi, dan intensitas warna biru paling tinggi.

Temperature and Air Velocity Simulation on Sago Starch Pneumatic Conveying Recirculated Dryer Using Ansys Fluent Abadi Jading; Nursigit Bintoro; Lilik Sutiarso; Joko Nugroho Wahyu Karyadi
agriTECH Vol 38, No 1 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Pneumatic Conveying Recirculated Dryer (PCRD) is one of many driers used for drying wet sago starch. The most important components of this PCRD machine are the vertical pipe and the u-bend. The vertical pipe and the u-bend are the primary drying spaces. They must have a good temperature distribution and air velocity dryer. To observe the process of temperature distribution and the air velocity dryer in the vertical pipe and u-bend, Computational Fluid Dynamics (CFD) analysis is required. The research was aimed to analyze the temperature distribution and the air velocity dryer flow in the recirculated pipe of PCRD machine by using CFD analysis. The analysis was based on the variance of the temperature, the air velocity, and the height of the vertical pipe in PCRD machine. The analysis was conducted using Ansys Workbench Fluid Flow ver. 15. This software was used to simulate the temperature and the air flow velocity in the vertical pipe and the u-bend. However, the flow characteristics and patterns of the wet sago starch were not included in the discussion. The turbulence model used in the simulation was the Reynold Stress Models (RSM). The result of the simulation showed that the temperature along the vertical pipe and the u-bend was distributed evenly. The error value between the result of the simulation and the observation was low (0.10–2.04%). The average test value with paired t-test showed that the simulation and observation result was not significantly different. This results indicated that the simulation fit well with the observation value or the real condition in the PCRD machine. The distribution of the temperature and the air velocity dryer in the vertical pipe and the u-bend were able to reduce the moisture content on sago starch from 31% (wb) to 9% (wb). Therefore, the vertical pipe and the u-bend design was appropriate to use in PCRD machine for drying wet sago starch.

Faktor Risiko terhadap Total Bakteri, Staphylococcus aureus, Koliform, dan E. coli pada Susu Kambing Widodo Suwito; Erna Winarti; Felisitas Kristiyanti; Ari Widyastuti; Andriani Andriani
agriTECH Vol 38, No 1 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

The objective of this research is to determine the risk factors that affect the total bacteria, S. aureus, coliform, and E. coli in goat milk against SNI No 01-6366-2000 requirements. A total of 16 samples of goat milk from Sleman district were analyzed for total bacteria, S. aureus, coliform using dilution plate count, whereas E. coli count was based on biochemical reaction. Management of each dairy goat farm was recorded using questionnaires. The risk factors of total bacteria, S. aureus, coliform, and E. coli in goat milk were determined based on chi square ( χ2) bivariate analysis, odds ratio (OR), and relative risk (RR). The risk factors that affected total bacteria, S. aureus, coliform, and E. coli in goat milk are cleanliness of stall, milk containers, personal knowledge of dairy hygiene, washing of the udder before milking, the time and the amount of milking. ABSTRAKPenelitian ini bertujuan untuk menentukan faktor risiko yang mempengaruhi total bakteri, Staphylococcus aureus (S. Aureus), koliform, dan Escherichia coli (E. coli) pada susu kambing dari Kabupaten Sleman agar memenuhi persyaratan SNI No 01-6366-2000. Sebanyak 16 susu kambing dari Kabupaten Sleman digunakan dalam penelitian ini. Susu kambing diperiksa terhadap total bakteri, S. aureus, koliform, dengan hitungan cawan sedangkan E. coli berdasarkan reaksi biokimia. Manajemen pemerahan dari masing-masing peternakan ditulis dalam lembar kuesioner. Analisis bivariate chi square (χ2), odds ratio (OR), dan relative risk (RR) digunakan untuk menentukan faktor risiko yang mempengaruhi total bakteri, S. aureus, koliform, dan E. coli pada susu kambing. Faktor risiko yang mempengaruhi total bakteri, S. aureus, koliform, dan E. coli dalam susu kambing adalah kebersihan kandang, tempat penampung susu, pengetahuan personal hygiene pemerah susu, mencuci ambing sebelum diperah, waktu dan banyaknya pemerahan.

Kinetika Perubahan Mutu Minyak Buah Merah (Pandanus conoideus) Selama Penyimpanan Zita Letviany Sarungallo; Budi Santoso; Eduard Fransisco Tethool; Risma Uli Situngkir; Jandri Tupamahu
agriTECH Vol 38, No 1 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Red fruit (Pandanus conoideus) oil contains high unsaturated fatty acids that are readily oxidized during storage, consequently, this affects its quality. Kinetic model can be used to describe the rate of change in quality attributes as a function of time at a certain temperature. This study was aimed to gain kinetic model of quality deterioration of the red fruit oil during storage. Red fruit oil was packaged in dark bottles at a temperature of 60 °C, 75 °C and 90 °C to test their quality stabilities. The water content, free fatty acid (FFA), peroxide value and total carotenoids were observed for ±15 days. The results showed that the quality of the red fruit oil decreases along with the increase of temperature and storage time. The increased levels of free fatty acids and peroxide value of red fruit oil follows the zero order, with Ea value of 43318 J/mol °K and 29437 J/mol °K, respectively. Red fruit oil peroxide value with the lowest Ea showed the most sensitive to oxidative damage during storage. Shelf life estimation of red fruit oil based on the increasing of FFA and peroxide value are following equation of A=Ao-(t.exp[5,6-4.536(1 /T)]) and A=Ao-(t.exp[4,7-3.541(1/T)), respectively. Whereas decrease of carotenoids content follows first order with Ea value was 78,113 J/mol °K. The shelf life estimation for carotenoids content using equation ln A=ln Ao-(t[20,8-9.395(1/T)) ; where A: content of the end; Ao: initial levels; t: storage time (hours); and T: storage temperature (°K). ABSTRAKMinyak buah merah (Pandanus conoideus) mengandung asam lemak tidak jenuh tinggi sehingga mudah teroksidasi dan mempengaruhi mutunya selama penyimpanan. Penelitian ini bertujuan untuk menentukan stabilitas oksidasi minyak buah merah dan mendapatkan model kinetika kerusakan oksidatif mutu minyak buah merah selama penyimpanan pada suhu kritis. Minyak buah merah yang akan diuji stabilitas mutunya dikemas dalam botol gelap pada suhu 60 °C, 75 °C, dan 90 °C, kemudian dilakukan pengamatan terhadap kadar air, kadar asam lemak bebas (ALB), bilangan peroksida dan total karotenoid selama ±15 hari. Hasil penelitian menunjukkan bahwa mutu minyak buah merah menurun dengan meningkatnya suhu dan lama penyimpanan. Peningkatan kadar ALB dan bilangan peroksida minyak buah merah mengikuti orde nol, dengan nilai Ea berturut-turut 37.709 J/mol °K dan 29.437 J/mol °K; sedangkan penurunan kadar karotenoid mengikuti orde 1 dengan nilai Ea 78.113 J/mol °K. Bilangan peroksida minyak buah merah paling sensitif terhadap kerusakan oksidatif selama penyimpanan karena memiliki nilai Ea terendah. Pendugaan umur simpan minyak buah merah berdasarkan kenaikan nilai ALB dan peroksida mengikuti persamaan A=Ao-(t.eksp[5,6-4.536(1 /T)]) dan A=Ao-(t.eksp[4,7-3.541(1/T)). Sementara umur simpan berdasarkan penurunan kadar karotenoid mengikuti persamaan ln A=ln Ao-(t[20,8-9.395(1/T)) dimana A= kadar akhir; Ao= kadar awal; t= lama penyimpanan (jam); dan T= suhu penyimpanan (°K).

Page 1 of 2 | Total Record : 15

1 2

Filter by Year

2018 2018

Filter By Issues

All Issue Vol 43, No 3 (2023) Vol 43, No 2 (2023) Vol 43, No 1 (2023) Vol 42, No 4 (2022) Vol 42, No 3 (2022) Vol 42, No 2 (2022) Vol 42, No 1 (2022) Vol 41, No 4 (2021) Vol 41, No 3 (2021) Vol 41, No 2 (2021) Vol 41, No 1 (2021) Vol 40, No 4 (2020) Vol 40, No 3 (2020) Vol 40, No 2 (2020) Vol 40, No 1 (2020) Vol 39, No 4 (2019) Vol 39, No 3 (2019) Vol 39, No 2 (2019) Vol 39, No 1 (2019) Vol 38, No 4 (2018) Vol 38, No 3 (2018) Vol 38, No 2 (2018) Vol 38, No 1 (2018) Vol 37, No 4 (2017) Vol 37, No 3 (2017) Vol 37, No 2 (2017) Vol 37, No 1 (2017) Vol 36, No 4 (2016) Vol 36, No 3 (2016) Vol 36, No 2 (2016) Vol 36, No 1 (2016) Vol 35, No 4 (2015) Vol 35, No 3 (2015) Vol 35, No 2 (2015) Vol 35, No 1 (2015) Vol 34, No 4 (2014) Vol 34, No 3 (2014) Vol 34, No 2 (2014) Vol 34, No 1 (2014) Vol 33, No 4 (2013) Vol 33, No 3 (2013) Vol 33, No 2 (2013) Vol 33, No 1 (2013) Vol 32, No 4 (2012) Vol 32, No 3 (2012) Vol 32, No 2 (2012) Vol 32, No 1 (2012) Vol 31, No 4 (2011) Vol 31, No 3 (2011) Vol 31, No 2 (2011) Vol 31, No 1 (2011) Vol 30, No 4 (2010) Vol 30, No 3 (2010) Vol 30, No 2 (2010) Vol 30, No 1 (2010) Vol 29, No 4 (2009) Vol 29, No 3 (2009) Vol 29, No 2 (2009) Vol 29, No 1 (2009) Vol 28, No 4 (2008) Vol 28, No 3 (2008) Vol 28, No 2 (2008) Vol 28, No 1 (2008) Vol 27, No 4 (2007) Vol 27, No 3 (2007) Vol 27, No 2 (2007) Vol 27, No 1 (2007) Vol 26, No 4 (2006) Vol 26, No 3 (2006) Vol 26, No 2 (2006) Vol 26, No 1 (2006) Vol 25, No 4 (2005) Vol 25, No 3 (2005) Vol 25, No 2 (2005) Vol 25, No 1 (2005) Vol 24, No 4 (2004) Vol 24, No 3 (2004) Vol 24, No 2 (2004) Vol 24, No 1 (2004) Vol 23, No 4 (2003) Vol 23, No 3 (2003) Vol 23, No 2 (2003) Vol 23, No 1 (2003) Vol 22, No 4 (2002) Vol 22, No 3 (2002) Vol 22, No 2 (2002) Vol 22, No 1 (2002) Vol 21, No 4 (2001) Vol 21, No 3 (2001) Vol 21, No 2 (2001) Vol 21, No 1 (2001) Vol 20, No 4 (2000) Vol 20, No 3 (2000) Vol 20, No 2 (2000) Vol 20, No 1 (2000) Vol 19, No 4 (1999) Vol 19, No 3 (1999) Vol 19, No 2 (1999) Vol 19, No 1 (1999) Vol 18, No 4 (1998) Vol 18, No 3 (1998) Vol 18, No 2 (1998) Vol 18, No 1 (1998) Vol 17, No 4 (1997) Vol 17, No 3 (1997) Vol 17, No 2 (1997) Vol 17, No 1 (1997) Vol 16, No 4 (1996) Vol 16, No 3 (1996) Vol 16, No 2 (1996) Vol 16, No 1 (1996) Vol 15, No 4 (1995) Vol 14, No 3 (1994) Vol 14, No 2 (1994) Vol 14, No 1 (1994) Vol 13, No 4 (1993) Vol 13, No 3 (1993) Vol 13, No 2 (1993) Vol 13, No 1 (1993) Vol 12, No 4 (1992) Vol 12, No 3 (1992) Vol 12, No 2 (1992) Vol 12, No 1 (1992) Vol 11, No 4 (1991) Vol 11, No 3 (1991) Vol 11, No 2 (1991) Vol 11, No 1 (1991) Vol 10, No 4 (1990) Vol 10, No 3 (1990) Vol 10, No 2 (1990) Vol 10, No 1 (1990) Vol 9, No 4 (1989) Vol 9, No 3 (1989) Vol 9, No 2 (1989) Vol 9, No 1 (1989) Vol 8, No 4 (1988) Vol 8, No 3 (1988) Vol 8, No 2 (1988) Vol 8, No 1 (1988) Vol 7, No 2 (1987) Vol 7, No 1 (1987) Vol 6, No 1 & 2 (1986) Vol 5, No 1 & 2 (1985) Vol 4, No 2,3, & 4 (1984) Vol 4, No 1 (1984) Vol 3, No 3 (1982) Vol 3, No 1 (1982) Vol 2, No 4 (1981) Vol 2, No 3 (1981) Vol 2, No 2 (1981) Vol 2, No 1 (1981) Vol 1, No 3 (1980) Vol 1, No 2 (1980) Vol 1, No 1 (1980) More Issue

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

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