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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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The Effect of Phytic Acid, Zinc and Soybean Extract on The Growth and Aflatoxin B1 Production by Aspergillus flavus Sardjono Sardjono
agriTECH Vol 30, No 1 (2010)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

It has been reported that aflatoxin contamination in soybean was relatively low, but it was not guaranteed that soybean products is free from aflatoxin contamination. Naturally, soybean containing phytic acid and it bound zinc and protein. Zinc (Zn) is an important mineral for aflatoxin biosynthesis. Previous research indicated that some soybean products such as kecap was contaminated by aflatoxin. It might be Aspergillus flavus involved during kecap fermentation and it produced phytase for phytic acid degradation. Zinc will be released and available for aflatoxin biosynthesis. The aim of this research was to evaluate the effect of phytic acid, Zn and soybean extract on the growth and aflatoxin B1 (AFB1) production by Aspergillus flavus. Five kind of medium were used in the experiment, Glucose Ammonium Nitrate (GAN) medium, a special medium for aflatoxin production, GAN without Zn, GAN supplemented with phytic acid, GAN supplemented with soybean extract instead of glucose and soybean extract supplemented with phytic acid. Two and a half milliliter of spore suspension ��07spores/ml) was inoculated into 250 ml of each medium in 1 liter flask. Incuba�tion was done in shaker incubator at room temperature. The growth of mold and AFB� production were analy�ed on 3 and 6 days incubation time. The result indicated that phytic acid lowering the growth of mold in the early 3 days, but not at all after 6 days incubation. It seems that phytic acid delays the aflatoxin production. Lack of Zn in the medium brought about the lowering of aflatoxin production. Even glucose concentration in soybean extract medium was lower than in GAN medium, the growth of the mold was not inhibited but lower on glucose affect on decreasing of AFB1 production.

Analisis Dimensi Proses Pelarutan Tablet Effervescent Sari Buah Markisa Ansar Ansar; Budi Rahardjo; Zuheid Noor; Rochmadi Rochmadi
agriTECH Vol 30, No 1 (2010)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

The aim of this study was to understand dissolution process of the passion fruit effervescent tablet used dimension analysis. The variables of surveyed was mass, volume, moisture content, glass transition temperature, the temperature increases while compression, water volume, water temperature, water density, compression force, and compression velocity. The results showed that factors effect on dissolution process of the passion fruit effervescent tablet was mass, volume, moisture content, glass transition temperature, the temperature increases while compression, water volume, water temperature, water density, compression force, and compression velocity. The soluble solid concentration increased while added dissolution time then occur equilibrium.ABSTRAKTujuan penelitian adalah mengkaji proses pelarutan tablet effervescent sari buah markisa menggunakan analisis dimensi. Variabel yang diamati adalah massa bahan, volume bahan, kadar air, suhu transisi gelas, peningkatan suhu selama pengepresan, volume air, suhu air, densitas air, gaya tekan, dan kecepatan penekanan. Hasil penelitian menunjukkan bahwa faktor-faktor yang berpengaruh pada proses pelarutan tablet adalah massa bahan, volume bahan, kadar air, suhu transisi gelas, peningkatan suhu selama pengepresan, volume air, suhu air, densitas air, gaya tekan, dan kecepatan penekanan. Konsentrasi padatan terlarut meningkat seiring dengan bertambahnya waktu pelarutan kemudian terjadi keseimbangan.

Pengaruh Sorbitol-Oleat Poliester (SOPE) terhadap Profil Lipid Serum Tikus Sprague-Dawley Agnes Murdiati; Hastari Wuryastuti; Y. Marsono; Eni Harmayani
agriTECH Vol 30, No 1 (2010)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

The intake of fats excessively is tend to promote degenerative diseases, however decreasing of fat intake was difficult to be done, so the production of fat replacer is necessity. The objective of this research was to study the effects of fat replacer sorbitololeic polyester (SOPE) on health. The result showed that replacement of SOPE to fats diets on rats did not have negative effects on lipid profile of serum. The replacement of fats in standard diets by 75 % of SOPE during 3 weeks period of intervention diets did not have significant different on total cholesterol, it was decrease of LDL cholesterol (3,46 %), and increased HDL cholesterol (11,89 %), in spite of increasing of triglyceride slightly (9,07 %).ABSTRAKAsupan lemak yang berlebih dapat menimbulkan berbagai masalah kesehatan seperti penyakit-penyakit yang berkaitan dengan pembuluh darah. Pengurangan asupan lemak sulit dilakukan karena lemak mempunyai peran yang sangat penting dalam proses pengolahan makanan. Oleh karena itu, pengembangan senyawa pengganti lemak atau fat replacer sangat diperlukan. Sorbitol-oleat poliester (SOPE) merupakan fat replacer yang dapat digunakan sebagai pengganti minyak. Namun demikian, penggunaan senyawa ini perlu diuji efeknya terhadap kesehatan. Penelitian ini menggunakan tikus Sprague Dawley jantan, dewasa sebanyak 50 ekor. Adaptasi dilakukan selama 7 hari, selanjutnya tikus dibagi menjadi 5 kelompok. Satu kelompok diberi pakan standar, dan 4 kelompok yang lain diberi pakan mengandung SOPE sebanyak 25, 50, 75 dan 100 % menggantikan minyak diet. Intervensi diet dilakukan selama 3 minggu, dan analisis profil lipid serum dilakukan secara periodik setiap minggu. Hasil penelitian menunjukkan bahwa penggunaan SOPE untuk menggantikan sebagian atau semua minyak dalam diet standar tidak berpengaruh merugikan terhadap profil lipid serum tikus. Penggunaan SOPE sebanyak 75 % untuk menggantikan minyak pada pakan standar selama 3 minggu intervensi diet tidak berpengaruh terhadap kandungan kolesterol total, namun menurunkan kolesterol LDL (13,46%) dan meningkatkan kandungan kolesterol HDL (11,89 %), walaupun sedikit meningkatkan kandungan trigliserida serum (9,07 %).

Efek Sinar Ultraviolet dan Lama Simpan terhadap Karakteristik Sari Buah Tomat Suharyono Suharyono; M. Kurniadi
agriTECH Vol 30, No 1 (2010)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Vitamin C and lycopene content in tomato juice are easily damaged by heat, therefore, effective treatment to inhibit the damage without reducing the juice quality is important. Moreover, tomato juice is also easily damaged by microorganism activity. Ultra violet (UV) irradiation can be used to reduce total microorganism in tomato juice without reducing the quality since UV has lethal effect to microorganisms. The aim of this research is to find out the length of UV irradiation and storage time appropriate to reduce the highest amount of total microorganisms, and to maintain lycopene and vitamin C content of tomato juice. The result shows that at 50 second UV irradiation and 0 (zero) storage time treatment results in total microorganism of 1.3 x 107 CFU/ml, vitamin C of 24.64 mg, and lycopene of 0.36.ABSTRAKKandungan vitamin C dan likopen pada sari buah tomat mudah mengalami kerusakan oleh proses pemanasan, oleh sebab itu perlu perlakuan yang efektif untuk mencegah kerusakan tersebut tanpa harus mengurangi mutu dari sari buah tomat. Salah satu cara yang digunakan untuk menurunkan total mikroba pada sari buah tomat tanpa harus mengurangi mutunya ialah dengan penyinaran sinar ultraviolet (UV). Penelitian ini bertujuan untuk mendapatkan lama penyinaran dengan sinar ultraviolet model STS-1968C dan lama simpan yang tepat untuk menurunkan total mikroba tertinggi, mempertahankan kandungan likopen dan kandungan vitamin C tertinggi pada sari buah tomat. Hasil terbaik diperoleh pada sari buah tomat yang diberi perlakuan penyinaran 50 detik dan tanpa penyimpanan yaitu menghasilkan total mikroba 1,3x107 CFU/ml, kandungan vitamin C 24,64 mg, dan kandungan likopen 0,36.

Penentuan Kandungan Padatan Terlarut Buah Jeruk BW Secara Tidak Merusak Menggunakan Near Infrared Spectroscopy Diding Suhandy
agriTECH Vol 30, No 1 (2010)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Oranges Citrus sp var. chokun BW are very famous in Lampung Province. To optimize the grading system of these oraanges, a nondestructive method to measure the soluble solids content (SSC) was needed. In this study, a nondestructive method using near infrared (NIR) spectroscopy for determining the SSC of fresh oranges was investigated. A number of 86 samples, 43 samples for both calibration and validation sample set, were used respectively. The spectra of oranges were acquired at two positions for each sample in diffuse reflectance technique using a portable spectrometer operated at 300-1100 nm. The SSC of oranges were measured using the refractometer. Using the Unscrambler, statistical software for multivariate calibration, a correlation between the spectra and the SSC of oranges was investigated. Then, a calibration model for determining the SSC of oranges was developed. The result showed that the best calibration model was identified for smoothing spectra in the wavelength range of 700-990 nm with R2=0.92 and SEC=0.36. The validation result showed that its calibration model had low bias and low SEP. By a 95% confidence t-test there were no significance differences between the SSC measured by the refraktometer and that predicted by NIR spectroscopy.ABSTRAKBuah jeruk BW sangat terkenal di Provinsi Lampung. Untuk mengoptimalkan sistem pengkelasan buah jeruk BW diperlukan sebuah metode yang dapat mengukur kandungan padatan terlarut (KPT) buah jeruk BW secara tidak merusak produk. Pada penelitian ini, dilakukan pemeriksaan terhadap potensi metode near infrared (NIR) spectroscopy pada pengukuran KPT buah jeruk BW secara tidak merusak. Sebanyak 86 sampel, masing-masing 43 buah sampel untuk membangun model kalibrasi dan uji validasi digunakan pada penelitian ini. Spektra buah jeruk diambil dengan menggunakan spectrometer portable yang beroperasi pada panjang gelombang 300-1100 nm. Spektra diambil pada dua posisi yang berbeda pada teknik diffuse reflectance. Unscrambler digunakan untuk menginvestigasi hubungan antara spektra dan KPT buah jeruk BW dengan membangun model kalibrasi. Hasil penelitian ini menunjukkan model kalibrasi terbaik diperoleh pada smoothing spektra pada panjang gelombang 700-990 nm dengan R2=0.92 dan SEC=0.36. Validasi model menunjukkan model kalibrasi memiliki nilai bias dan SEP yang kecil. Dengan menggunakan tingkat kepercayaan 95%, uji t-test menunjukkan tidak terdapat perbedaan yang nyata antara KPT yang diukur menggunakan refraktometer dan KPT yang diprediksi oleh NIR spectroscopy.

Perubahan Sifat Fisiko-Kimia Biji Jagung (Zea mays L.) pada Penyimpanan dengan Perlakuan Karbondioksida (CO) Widaningrum Widaningrum; Miskiyah Miskiyah; A. S. Somantri
agriTECH Vol 30, No 1 (2010)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Maize represent one of agriculture commodities having strategic value, particularly as animal feed. To increase maize availability and reduce its import dependency, an effort must be done by providing good post harvest handling, thus losses can be minimized. The aim of this research was to study changes in physico-chemical properties of maize grain applied by modified atmosfer condition since harvested until storage. Storage treatment using CO 0%, 40% and 70% each and control (opened, without CO). Treatment done in three replications. Analysis had been done every 2 weeks. Research result showed that treatment of CO at three concentration level (0%, 40%, and 70%) and four storage time (2, 4, 6, and 8 weeks) significantly affected moisture content and crude fiber of maize grain, but did not significantly affected to ash, fat, protein, and starch content. Nonetheless, as individual factor, storage time significantly affected content of ash, fat, and physical damage mean while CO concentration significantly affected starch content of maize grain. Protein composition changes on maize grain did not affected by treatment of CO and storage time, as the same as its individual factor. In this research, content of moisture, ash, fat, and crude fiber of maize grain still fulfill the SNI for maize grain for animal feed (SNI 01-4483-1998), whereas the protein content still low (below 7.5%) and has not fulfilled the standard yet. This low protein content probably caused by its low content on initial storage time; 5.90%. Based on all chemical and physical characteristics of maize grain in this research, storage with CO treatment can be recommended to be applied on maize grain storage because of its ability in maintaining nutrient composition, compared to those without CO treatment.ABSTRAKJagung merupakan salah satu komoditas pertanian yang memiliki nilai yang strategis, terutama sebagai pakan ter nak. Untuk meningkatkan ketersediaan jagung dan menurunkan ketergantungannya terhadap impor, diperlukan upaya penanganan pascapanen yang baik sehingga susut bobot dapat diminimalisir. Tujuan penelitian ini yaitu mempelajari perubahan sifat fisikokimia yang terjadi pada biji jagung dengan perlakuan kondisi atmosfir termodifikasi setelah dipanen sampai penyimpanan. Perlakuan penyimpanan menggunakan CO 0%, 40% dan 70% serta kontrol (terbuka, tanpa pemberian CO2). Perlakuan dilakukan sebanyak tiga kali ulangan. Pengamatan dilakukan setiap dua minggu sekali. Hasil penelitian menunjukkan bahwa pemberian CO pada tiga taraf konsentrasi (0%, 40%, dan 70%) dengan empat waktu penyimpanan (2, 4, 6, dan 8 minggu) mempengaruhi kadar air dan serat kasar biji jagung, tetapi tidak mempengaruhi kadar abu, lemak, protein, dan pati biji jagung. Namun, sebagai faktor tunggal, waktu penyimpanan mempengaruhi kadar abu, lemak, dan rusak fisik sedangkan konsentrasi CO mempengaruhi kadar pati biji jagung. Perubahan kandungan protein pada biji jagung tidak dipengaruhi oleh pemberian CO dan waktu penyimpanan, sebagaimana juga sebagai faktor tunggalnya. Pada penelitian ini, kadar air, abu, lemak, dan serat kasar biji jagung masih memenuhi persyaratan dalam SNI biji jagung untuk pakan ternak (SNI 01-4483-1998), tetapi kandungan proteinnya masih cukup rendah (dibawah 7,5%) dan belum memenuhi persyaratan standar. Kadar protein yang masih rendah ini diduga disebabkan oleh rendahnya kadar protein pada awal penyimpanan, yaitu 5,90%. Berdasarkan pada sifat fisik dan kimia biji jagung yang diperoleh pada penelitian ini, penyimpanan dengan CO dapat direkomendasikan untuk diaplikasikan pada biji jagung selama penyimpanan karena mampu mempertahankan komposisi nutrisi biji jagung, bila dibandingkan dengan biji jagung yang tidak mendapat perlakuan pemberian CO .

Optimasi Kinerja Rantai Pasok Industri Tekstil dan Produk Tekstil Indonesia Berdasarkan Simulasi Sistem Dinamis Kuncoro Harto Widodo; Erdi Ferdiansyah
agriTECH Vol 30, No 1 (2010)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

The purpose of this research was to optimize supply chain performance of Indonesia textile and textile product industries. Optimation was conducted by considering export and import quantity. Optimizing of supply chain performance was obtained by using dynamic system simulation approach. The research was started by identifying the basic supply chain system of Indonesia textile and textile-product industries. SWOT analysis was implemented to identify condition and needs of each suppply chain element based on strengths, weaknesses, opportunities and threats. The next stage was by creating supply chain system model using dynamic system software including with its validation. The last stage was by simulating the model with scenarios to optimize the performance. The result showed that there are 3 scenarios to optimize Indonesia textile and textile-product industries performance, those are short, middle and long term scenarios.ABSTRAKPenelitian ini bertujuan untuk mengoptimalkan kinerja rantai pasok dari industri tekstil dan produk tekstil (ITPT) Indonesia. Optimasi dilakukan dengan mempertimbangkan kuantitas ekspor dan impor. Pengoptimalan kinerja rantai pasok diperoleh berdasarkan pendekatan simulasi sistem dinamis. Penelitian diawali dengan mengidentifikasi sistem dasar rantai pasok ITPT Indonesia menggunakan analisis SWOT untuk menggambarkan kondisi dan kebutuhan dari masing-masing elemen rantai pasoknya berdasar kekuatan, kelemahan, peluang dan ancaman yang dimiliki. Tahap selanjutnya adalah dengan memodelkan sistem rantai pasok tersebut menggunakan perangkat lunak sistem dinamis beserta validasinya. Tahap terakhir adalah mensimulasikan model tersebut berdasar skenario-skenario yang mengarah pada optimasi kinerjanya. Hasil dari penelitian ini adalah diperolehnya 3 skenario optimasi, yaitu skenario jangka pendek, menengah dan jangka panjang.

Pengaruh Infeksi Escherichia coli dan Pemberian Lactobacillus plantarum Dad 13 terhadap Mikrobiota Feses Tikus Wistar Bekti Tri Sumaryati; Tyas Utami; Suparmo Suparmo
agriTECH Vol 29, No 4 (2009)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

The antibacterial activity of Lactobacillus plantarum Dad 13 to pathogenic Escherichia coli was studied in vitro using well diffusion method. The effects of E. coli infection and addition of L. plantarum Dad 13 on fecal microbiota of Wistar rats were studied in-vivo. Rats were fed with standard feed. After five days they were divided into two groups. Rats in the first group were infected with 1010 CFU E. coli enterotoxigenic stabile toxin and rats in the second group were fed with 109 CFU L. plantarum Dad 13 for a week. Samples were taken before and after treatment for enumeration of E. coli, coliform, and lactobacilli in the feses. The results showed that L. plantarum Dad 13 could inhibit pathogenic E. coli indicated by clear zones. Escherichi coli infection didn’t significantly increased the count of E. coli and coliform in the feses, but reduced 0.4 log cycle of the total lactobacilli. Lactobacillus plantarum Dad 13 increased 1.2 log cycle of the total lactobacilli, but did not reduced the count of E. coli and coliform. Infection of E. coli and addition of L. plantarum Dad 13 changed the ratio among fecal microbiota of rats.ABSTRAKTujuan dari penelitian ini adalah mempelajari aktivitas antibakteri Lactobacillus plantarum. Dad 13 terhadap Escher ichia coli patogen penyebab diare secara in vitro, dan pengaruh infeksi E. coli patogenik dan pemberian L. plantarum Dad 13 terhadap mikrobiota feses tikus Wistar. Tikus percobaan diberi pakan standar selama lima hari, kemudian dibagi menjadi dua kelompok. Kelompok pertama, tikus diinfeksi dengan 1010 CFU E. coli patogen, sedang tikus pada kelompok kedua diberi L. plantarum Dad 13 sebanyak 109 cfu selama satu minggu. Sebelum dan setelah perlakuan, dilakukan enumerasi E. coli, coliform, dan lactobacilli pada feses tikus. Hasil yang diperoleh menunjukkan bahwa secara in vitro Lactobacillus sp. Dad 13 dapat menghambat pertumbuhan E. coli patogenik. Infeksi dengan 1010 CFU E. coli enterotoksigenik stabil toksin pada tikus Wistar tidak meningkatkan jumlah E. coli dan coliform, namun menu runkan jumlah lactobacilli sebesar 0,4 siklus log. Pemberian L.plantaraum Dad 13 tidak dapat menurunkan jumlah E. coli dan coliform, namun dapat meningkatkan jumlah lactobacilli sebesar 1,2 siklus log. Infeksi E. coli dan pemberian L. plantarum Dad 13 mengubah rasio mikrobia dalam feses.

Viabilitas Lactobacillus acidophilus SNP 2 dalam Kapsul dan Aplikasinya dalam Es Krim Andhini Banyuaji; Endang S. Rahayu; Tyas Utami
agriTECH Vol 29, No 4 (2009)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Due to the health benefit reasons, probiotics have been incorporated into a range of dairy products, including yogurt, cheese, and ice cream. However, the viability of probiotics can decrease during ice cream processing. The reduction of viable probiotics after consumption may also be due to the stomach acid and the presence of bile salt. This research studied the encapsulation of Lactobacillus acidophilus SNP 2 probiotic bacteria using extrusion and emulsion tech niques, and their effect on probiotic survival in acid pH, and viability during ice cream processing and storage. Encap sulation of probiotic bacteria by extrusion technique produced 3010 µm diameter of rough surface capsules with a lot of cavity. Conversely, emulsion technique produced smooth capsules with average diameter of 54.67 µm. About 94.13% and 94.56 % of viable cells were entrapped in the capsule using extrusion and emulsion encapsulation techniques respectively. Emulsion technique relatively produced better survival of encapsulated cells to low pH at 4 °C and 37 °C than extrusion technique did. Encapsulation techniques effectively protect the encapsulated cells from freezing injury during ice cream processing. There was no significance of reduction of viable cells during ice cream storage at -18°C for 18 weeks. Based on the sensory evaluation, there was no significant difference in organoleptic characteristics among ice cream containing free cell probiotics, ice cream containing encapsulated probiotics and ice cream without probiotics.ABSTRAKKarena manfaatnya bagi kesehatan, probiotik telah diaplikasikan pada berbagai produk olahan susu seperti yogurt, keju, dan es krim. Pada pengolahan es krim, viabilitas bakteri probiotik dapat mengalami penurunan karena proses pengadukan dan pembekuan. Turunnya viabilitas bakteri probiotik juga dapat terjadi karena kondisi asam dan garam empedu setelah produk dikonsumsi. Pada penelitian ini dipelajari teknik enkapsulasi probiotik Lactobacillus acido philus SNP2 dengan metoda ekstruksi dan emulsi, pengaruhnya terhadap viabilitas sel pada pH rendah, serta selama pengolahan dan penyimpanan es krim. Hasil penelitian menunjukkan bahwa enkapsulasi dengan metoda ekstruksi menghasilkan kapsul dengan diameter 3010 µm, permukaan kasar dan banyak cekungan, sedang kapsul yang diper oleh dengan metoda emulsi mempunyai permukaan halus dengan diameter 54,67 µm. Sel yang terjerat dalam kapsul dengan metoda ekstruksi dan emulsi masingmasing adalah 94,13% dan 94,56%. Ketahanan sel terenkapsulasi dengan metoda emulsi, terhadap pH rendah relatif lebih baik dari pada sel terenkapsulasi dengan metoda ekstruksi. Enkapsu lasi sel L. acidophilus SNP 2 efektif melindungi sel dari kerusakan karena pembekuan. Viabilitas sel probiotik dalam es krim selama penyimpanan 18 minggu pada suhu 18°C relatif tidak mengalami perubahan. Berdasarkan hasil uji sensoris terhadap es krim, tidak terdapat perbedaan yang nyata antara es krim probiotik sel bebas, es krim probiotik sel terenkapsulasi dengan es krim tanpa probiotik.

Isothermal Crystallization Properties of Rbd-Palm Oil as Measured By Dsc and Oscillatory Rheometry Bangun P. Nusantoro
agriTECH Vol 29, No 4 (2009)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

In this research, the crystallization properties of refined bleached and deodorized (RBD) palm oil under isothermal conditions were investigated. A good quality of RBD palm oil (showed by IV, FFA content, PV, and AV with the values of 52.14, 0.06%, 1.39 meq/kg, and 0.88, respectively) was used in this research. In general, RBD palm oil demonstrat ed a twostep crystallization process at the isothermal crystallization temperatures/ of 18oC, 20oC and 22oC. From differential scanning calorimetry (DSC) measurement of RBD palm oil, the melting heats/showed decrement values (33.84 J/g, 26.83 J/g and 22.47 J/g) but the peaks of the corresponding endotherm/ showed increment values (33.52oC, 34.72oC and 36.44oC) when both were correlated to the increased values of iso thermal crystallization temperatures/ (18oC, 20oC, and 22oC, respectively). From rheometry analysis of RBD palm oil (at the isothermal crystallization temperature of 18oC), the rheograms gave the values of the phase shift angle ( ), storage modulus () and complex modulus () at the end of crystallization process as follows: 24o,11.36 kPa, and 39 kPa. The overlay of andgavewith the value of 49.6 Pa at the isothermal time of 11.7 minute.

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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

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

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

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

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