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Journal : Jurnal Keteknikan Pertanian

Lama Pemanasan Metode Vapor Heat Treatment (VHT) dan Pelilinan Untuk Mempertahankan Mutu Pepaya Selama Penyimpanan Rokhani Hasbullah; Elpodesy Marlisa; Ali Parjito; Edy Hartulistiyoso
Jurnal Keteknikan Pertanian Vol. 22 No. 1 (2008): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1945.394 KB) | DOI: 10.19028/jtep.022.1.%p

Abstract

Horticulture products are host for Tephritidae fruitflies that are considered a quarantine risk by many importing countries. This research was conducted to find out the specific condition for the heat treatment using vapor heat treatment (VHT) method to control pest and diseases of papaya and the fruit quality during storage. Papayas were vapor heat treated at medium temperature of 46.5 0C for 0, 15, and 30 minutes. After the treatment, the fruits were waxed using beeswax of 6 % in concentration and then stored at temperature of 10 0C. The results show that the fruitfly of oriental fruitfly (Bactrocera dorsalis) was completely killed by treating in deep water testing at temperature of 46 0C for 10 minutes or at 43 0C for 30 minutes. The VHT of papaya at fruit core temperature of 45.5-46.0 0C for 15-30 minutes following waxing using beeswax of 6% in concentration was found to be effective to control pest and diseases until 21 days of storage without any visible signs of heat injury and without adversely affecting the quality of the fruit. Keywords: Papaya, vapor heat treatment, waxing, quarantine Diterima: 20 Agustus 2007; Disetujui: 24 Nopember 2007
Pendugaan Kerusakan Mangga Arumanis Akibat Lalat Buah Menggunakan Atenuasi Ultrasonik Warji .; Rokhani Hasbullah
Jurnal Keteknikan Pertanian Vol. 22 No. 2 (2008): Jurnal Keteknikan Pertanian
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.022.2.%p

Abstract

The objectives of this research were to determine attenuation coefficient of arumanis mangoes, to develop border equation prediction and to validate the border equation prediction of arumanis mangoes damage caused by fruit fly using ultrasonic attenuation coefficient. The method was-based on measurement of attenuation coefficient ultrasonic wave in arumanis mangoes. Results showed that mean of normal arumanis mangoes attenuation coefficient was 36.45 Nplm and attenuation of arumanis mangoes damage caused by fruit fly was 30.67 NPlm. Border equation prediction was attenuation coefficient more than 34.76 for normal mango and attenuation less than or same 34.76 for mangoes invested by fruit fly. Keywords: arumanis mangoes, fruit fly, ultrasonic, attenuation coefficient.
KAJIAN SISTEM PENGEMASAN BUNGA MAWAR POTONG (Rosa hybrida) SELAMA PENYIMPANAN UNTUK MEMPERPANJANG MASA PAJANGAN Rokhani Hasbullah; Suroso .; Desy Nofriati
Jurnal Keteknikan Pertanian Vol. 20 No. 1 (2006): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.020.1.%p

Abstract

ABSTRACT Pretreatment and packaging or rose cut flowers during stroage and transportation should be designed in order to keep its quality during vase life of the flowers. The objective of this study was to find out the pulsing solution and the design of packaging to prolong the vase life of the rose cut flowers. The flowers were harvested from Loji, Cipanas, when the flower was at two bud open stages. Before storage, the flowers were pulsed in the chemical solution of sucrose, glyserin, Na-benzoat and citric acid at different concentrations. Each 20  cuts of flower were placed in the boxes of 60 ´ 15 ´ 7 cm3with different ventilation system. The result showed that the pulsing solution with 3 % sucrose, 25% glyserin, 300 ppm Na-benzoat and 375 ppm citrit acid caused a signioficant decrease in the respiration rate and prolonged the vase life of the flowers. The  packaging model gave an effect of modified atmospheric environment inside the packaging and significantly affected the flower quality during stronge. The result suggested that the use of the packaging with the ventilation of 3.5 cm in diameter using polypropilene film would be suitable for rose cut flowers packaging during storage. The packaging model prolonged the vase lilfe of the flowers until 6 days after 5 days of storage and decreased the flowers senescene up to 20-25%. Keyword: rose cut flower, pulsing solution, modified atmosphere packaging, vase life.
Teknik Pengukuran Laju Respirasi Produk Hortikultura pada Kondisi Amosfir Terkendali Bagian 2: open system method Rokhani Hasbullah
Jurnal Keteknikan Pertanian Vol. 22 No. 1 (2008): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5395.197 KB) | DOI: 10.19028/jtep.022.1.%p

Abstract

Abstract The design of modified atmosphere packaging (MAP) requires steady state respiration rate data. The respiration rate of fresh produce is usually measured by the open system method where a steady stream of gas is passed through a respiration jar. It needs gas mixing unit to get certain level of controlled atmosphere (CA) condition and  an instrument to analyze gas composition. In this research, a gas chromatograph of Hewlett Packard of HP 5890 series with a thermal conductivity detector and suitable column was used to analyze the composition of oxygen, carbon dioxide and nitrogen simultanously. The measuring result of respiration rate of broccoli under CA conditions indicated that the gas composition gave significant influences. The respiration rate at a constant CO2 concentration decreases with decreasing O2 concentration. Keywords: broccoli, respiration rate, modified atmosphere packaging, gas chromatograph Diterima: 10 Desember 2007; Disetujui: 21 Maret 2008
Pengemasan dan Penyimpanan Dingin Kelapa Kopyor untuk Mempertahankan Mutu Muhammad Yusuf Antu; Rokhani Hasbullah; Usman Ahmad
Jurnal Keteknikan Pertanian Vol. 2 No. 2 (2014): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.02.2.%p

Abstract

AbstractThe objectives of this research were to study the influence of packaging material and the temperature applied during storage on the quality of kopyor coconut, to predict the shelf-life, and to determine the best packaging material and the storage temperature to keep the kopyor coconut. Research material is kopyor coconut obtained from Kalianda South Lampung. Kopyor coconut packaged in plastic film type Polyamide (PA), Polypropylene (PP), and High Density Polyethylene (HDPE) each weighing 60g. The quality parameter observed are free fatty acids (FFA), total microbes, and sensory characteristics including color, flavor, and taste. This research us Randomized Complete Design with two factors. The first factor was the packaging material with three different types (PA, PP, HDPE), and the second factor was the storage temperature at two levels of 5±2OC and 10±2OC. The shelf-life was predict using Partially StaggeredDesign (PSD) technique. Principal Component Analysis (PCA) technique was used to determine the best treatment. The results showed that the type of plastic packaging and storage temperature gave an effect onthe total microbes, and organoleptics of color, flavor, and taste. PA packaging is the best packaging can be maintained the quality of organoleptic and reduce the microbe growth. The storage temperature of 5±2OC can maintain quality of kopyor coconut better than 10±2OC temperature. Based on PSD method and total microbe as critical parameters, the shelf-life of kopyor coconut at 5±2OC is 27, 26, and 17 days for plastic PA, HDPE, and PP packaging, respectively.Keywords: kopyor coconut, packaging, film plastic, shelf-life.AbstrakTujuan penelitian adalah untuk mempelajari pengaruh jenis kemasan dan suhu penyimpanan terhadap mutu kelapa kopyor, memprediksi umur simpan, dan menentukan jenis kemasan dan suhu terbaik untuk menyimpan kelapa kopyor. Bahan penelitian adalah kelapa kopyor diperoleh dari Kalianda Lampung Selatan. Kelapa kopyor dikemas plastik jenis Polyamide (PA), Polypropylene (PP), dan High Density Polyethylene (HDPE) masing-masing seberat 60g. Parameter mutu yang dianalisis adalah Asam Lemak Bebas (ALB), total mikroba, dan organoleptik warna, aroma, dan rasa. Penelitian menggunakan Rancangan Acak Lengkap dengan dua faktor. Faktor pertama adalah plastik dengan tiga taraf (PA, PP, HDPE), dan faktor kedua adalah suhu dengan dua taraf (5±2OC dan 10±2OC). Prediksi umur simpan menggunakan Partially Staggered Design (PSD). Untuk menentukan perlakuan terbaik digunakan Principal Component Analysis (PCA). Hasil penelitian menunjukkan bahwa jenis kemasan plastik dan suhu penyimpanan berpengaruh nyata terhadap total mikroba, dan organoleptik warna, aroma, dan rasa. Kemasan jenis PA merupakan yang terbaik dalam mempertahankan mutu organoleptik dan menekan pertumbuhan mikroba. Suhu penyimpanan 5±2OC lebih dapat mempertahankan mutu kelapa kopyor dibandingkan dengan suhu10±2OC. Berdasarkan metode PSD dengan menggunakan mutu kritis total mikroba, umur simpan kelapa kopyor pada suhu 5±2OC adalah 27, 26, dan 17 hari untuk kemasan plastik PA, HDPE, dan PP.Kata kunci: kelapa kopyor, pengemasan, plastik film, umur simpan.Diterima: 18 Maret 2014 ; Disetujui;16 Juli 2014
PENERAPAN TEKNOLOGI KARANTINA: UPAYA MEMBUKA PELUANG EKSPOR BUAH-BUAHAN INDONESIA Rokhani Hasbullah
Jurnal Keteknikan Pertanian Vol. 21 No. 1 (2007): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.021.1.%p

Abstract

ABSTRACT Export of Indonesian fruit are constrained by very tight quarantine regulations, because some  produces are host for Tephritidae  fruit flies that are considered a quarantine risk by many importing countries. To be accepted by importing markets, the produces must be treated to ensure that they are free of the fruit flies. Since the prohibition of chemical method for insect disinfestation process (like ethylene dibromide, EDB) in 1984, a new method by means of heat treatment was developed as a quarantine technology This method has been applied in several fruit exporting countries such as: Australia, the Philippines, Taiwan and Thailand. Heat treatment in postharvest handling is a method of heating fruit to kill insects eggs and larvae of fruit flies prior to fresh market shipment without damaging the produces There are many factors influence the heat on postharvest fruit quality such as cultivar,  fruit size, morphological characteristics, stage of ripeness. and treatment method. Therefore, the applicability of this technology should be assessed on fruit by fruit basis in pursuing the objective of killing the pests/diseases without adversely affecting the  market quality of the fruit. Diterima:12 Pebruari  2007, Disetujui:. 27 Maret 2007
TEKNIK PENGUKURAN LAJU RESPIRASI PRODUK HORTIKULTURA PADA KONDISI AMOSFIR TERKENDALI Bagian I: Metode Sistem Tertutup Rokhani Hasbullah
Jurnal Keteknikan Pertanian Vol. 21 No. 4 (2007): Jurnal Keteknikan Pertanian
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.021.4.%p

Abstract

ABSTRACTData laju respirasi pada berbagai komposisi gas sangat diperlukan dalam perancangan penyimpanan segar hortikultura baik sistem penyimpanan secara modified atmosphere (MA) maupun controlled atmosphere (CA). Makalah ini membahas teknik pengukuran laju respirasi pada kondisi atmosfir terkendali menggunakan metode sistem tertutup (closed system) untuk mendapatkan data talu respirasi pada berbagai komposisi gas (O2 dan C02). Hasil pengukuran menunjukkan bahwa laju respirasi pada mangga dipengaruhi oleh komposisi gas, dimana laju resprasi meningkat dengan meningkatnya konsentrasi O2 dan menurunnya konsentrasi CO2 Model matematika berdasarkan prinsip reaksi enzirmatik cukup baik untuk memformulasikan laju respirasi sebagai fungsi dari konsentrasi O2 dan CO2.Diterima: 10 November 2007; Disetujui: 6 Desember 2007 
Model Arrhenius untuk Pendugaan Laju Respirasi Brokoli Terolah Minimal Nurul Imamah; Rokhani Hasbullah; Lilik Pujantoro Eko Nugroho
Jurnal Keteknikan Pertanian Vol. 4 No. 1 (2016): JURNAL KETEKNIKAN PERTANIAN
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1462.444 KB) | DOI: 10.19028/jtep.04.1.%p

Abstract

AbstractMinimally processed broccoli are perishable product because it still has some metabolism process duringthe storage period. One of the metabolism process is respiration. Respiration rate is varied depend on the commodity and storage temperature. The purpose of this research are: to review the respiration pattern of minimally processed broccoli during storage period, to study the effect of storage temperature to respiration rate, and to review the correlation between respiration rate and temperature based on Arrhenius model. Broccoli from farming organization “Agro Segar” was processed minimally and then measure the respiration rate. Closed system method is used to measure O2 and CO2 concentration. Minimally processed broccoli is stored at a temperature of 0oC, 5oC, 10oC and 15oC. The experimental design used was completely randomized design of the factors to analyze the rate of respiration. The result shows that broccoli is a climacteric vegetable. It is indicated by the increasing of O2 consumption and CO2 production during senescence phase. The respiration rate increase as high as the increasing of temperature storage. Models Arrhenius can describe correlation between respirationrate and temperature with R2= 0.953-0.947. The constant value of activation energy (Eai) and pre-exponential factor (Roi) from Arrhenius model can be used to predict the respiration rate of minimally processed broccoli in every storage temperatureAbstrakBrokoli terolah minimal merupakan produk yang mudah rusak (perishable). Hal tersebut terjadi karena jaringan tumbuhan masih melakukan kegiatan metabolisme selama penyimpanan. Salah satu proses metabolisme yang terjadi adalah respirasi. Besarnya laju respirasi bervariasi tergantung jenis komoditi dan sangat dipengaruhi oleh suhu penyimpanan. Penelitian ini bertujuan mengkaji pola respirasi brokoli terolah minimal selama penyimpanan, mengkaji pengaruh suhu terhadap laju respirasi dan menganalisis hubungan laju respirasi dengan suhu penyimpanan berdasarkan model Arrhenius. Brokoli yang diperoleh dari kelompok tani “Agro Segar” diolah secara minimal untuk kemudian diukur laju respirasinya. Metode sistem tertutup digunakan untuk mengukur konsentrasi O2 dan CO2. Brokoli terolah minimal disimpan pada suhu 0oC, 5oC, 10oC, dan 15oC. Rancangan percobaan yang digunakan adalah rancangan acak lengkap dengan 4 taraf perlakuan. Hasil penelitian menunjukan brokoli merupakan jenis sayuran klimaterik yang ditandai dengan adanya peningkatan konsumsi O2 dan produksi CO2 pada fase pelayuan. Laju respirasi meningkat seiring dengan meningkatnya suhu penyimpanan. Hubungan laju respirasi dengan suhu penyimpanan terbukti dapat dijelaskan menggunakan model Arrhenius yang memiliki nilai R2 = 0.953-0.947. Nilai konstanta energi aktivasi (Eai) dan faktor preeksponensial (Roi) dari model Arrhenius dapat digunakan untuk memprediksi laju respirasi brokoli terolah minimal pada setiap suhu penyimpanan.
Perlakuan Air Panas diikuti Pencelupan dalam Larutan CaCl2 untuk Mempertahankan Kualitas Buah Belimbing Manis (Averrhoa Carambola L.) Khoirul Mukhtarom; Sutrisno -; Rokhani Hasbullah
Jurnal Keteknikan Pertanian Vol. 4 No. 1 (2016): JURNAL KETEKNIKAN PERTANIAN
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1658.984 KB) | DOI: 10.19028/jtep.04.1.%p

Abstract

AbstractHot water treatment (HWT) followed by CaCl2 solution immersion was well performed to evaluate its effect on the quality of star fruit (Averrhoa carambola L.). The star fruit was dipped in hot water at the temperature 42±0.2OC for 5 and 10 minutes, then dipped in the 1 and 3% CaCl2 solution and stored at 10OC for 27 days. The control was conducted by storing star fruits directly without HWT and CaCl2 solution immersion at the same temperature. The parameter observed in this work were calcium content of the sample, which was measured at the beginning of storage after treatment, microbial total counted at 0, 12, and 24 days of storage, as well as weight loss and browning index were measured every three days during storage. The result evidenced that the HWT were able to suppress the growth of microbes and maintainedfruit color during storage, whereas the application of CaCl2 increased calcium content in star fruit, but it caused fruit damage which increased the number of microbial total and weight loss also decreased of firmness so that the shelf life of fruit shorter.AbstrakPerlakuan air panas (hot water treatment (HWT)) diikuti dengan pencelupan dalam larutan CaCl2 telah dikaji untuk melihat pengaruhnya terhadap mutu buah belimbing manis. Buah belimbing dicelup dalam air panas pada suhu 42±0.2OC selama 5 menit dan 10 menit, kemudian dicelup dalam larutan CaCl2 1% dan 3%) dan disimpan pada suhu 10OC selama 27 hari. Sebagai control, buah belimbing tidak diberi perlakuandan disimpan pada suhu yang sama. Parameter yang diamati meliputi kandungan kalsium diukur pada awal penyimpanan setelah perlakuan, total mikroba diukur pada hari penyimpanan ke-0, 12, dan 24, serta susut bobot dan browning index yang diukur setiap tiga hari selama penyimpanan. Hasil penelitian menunjukkan bahwa HWT mampu menekan pertumbuhan mikroba dan mempertahankan warna buah selama penyimpanan, sedangkan aplikasi CaCl2 meningkatkan kandungan kalsium dalam buah belimbing,akan tetapi menyebabkan buah mengalami kerusakan yang berdampak pada meningkatnya total mikroba dan susut bobot serta menurunnya kekerasan sehingga memperpendek umur simpan buah.
Respon Suhu pada Laju Pengeringan dan Mutu Manisan Mangga Kering (Mangifera indica L.) Rozana -; Rokhani Hasbullah; Tjahja Muhandri
Jurnal Keteknikan Pertanian Vol. 4 No. 1 (2016): JURNAL KETEKNIKAN PERTANIAN
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1656.796 KB) | DOI: 10.19028/jtep.04.1.%p

Abstract

AbstractMango is higly perishable and must be consumed within a few days after harvesting. Preserving mango into dry product can extend shelf life and increase added value. The research aimed to investigate the processing technology of dried candied mango by analysing the drying rate and quality of the product in various drying temperature and slice forms the mango. Mangos of Kopek cv. were sliced into cubes, bar, and flat then dried at 45°C and 50°C. Responses which observed were drying rate, water content, water activity value (aw), yield, and organoleptic. The results showed that the drying rate fluctuates due to the influence of the opening of the drying rack and the heating element. Shortest drying time is obtained in the form of slices drying box at 50°C with a yield of 52.45% and the value of aw 0.59. Organoleptic response indicates that the wedge shape and drying temperature does not affect the assessment of panel.AbstrakBuah mangga sangat mudah rusak dan harus dikonsumsi dalam beberapa hari setelah panen. Mengawetkan mangga menjadi produk kering mampu memperpanjang umur simpan dan meningkatkan nilai tambah. Penelitian ini bertujuan untuk mengkaji teknologi pengolahan manisan mangga kering dengan menganalisis karakteristik pengeringan pada berbagai suhu pengeringan dan bentuk irisan mangga. Buah mangga varietas kopek diiris menjadi bentuk kubus, balok, dan pipih kemudian dikeringkan pada suhu 45°C dan 50°C. Respon yang diamati meliputi laju pengeringan, kadar air, nilai aw, rendemen, dan organoleptik. Hasil penelitian menunjukkan bahwa laju pengeringan berfluktuasi karena pengaruh pembukaan rak pengering dan elemen pemanas. Waktu pengeringan terpendek diperoleh pada pengeringan bentukirisan kubus pada suhu 50°C dengan rendemen sebesar 52.45% dan nilai aw 0.59. Respon organoleptik menunjukkan bahwa bentuk irisan dan suhu pengeringan tidak mempengaruhi penilaian panelis.
Co-Authors . Setiadjit . Sukarno . Sutrisno Abdul Waries Patiwiri Achmad Fitrah Maulidin Addiena Syahvina Nasution Adhitya Yudha Pradhana Agus Ghautsun Niam Agus Sutejo Ahmad Yani Ahmad Yani Alhori Alhori Ali Parjito Amzul Rifin Andi Suryadi Anggitha Ratri Dewi Arief Daryanto Arif Imam Suroso Arif Suroso Aris Purwanto Astu Unadi Budi Nurtama Budi Rahardjo Cicih Sugianti Dadang . Damanik, Annisa Purnamasari Deasy Fitriani Desy Nofriati Desy Nofriati Deva Primadia Almada Dikky Indrawan Dondy A Setyabudi Dondy A Setyabudi DS Priyarsono Dwi Zuwarman Edi Suryanto Edy Hartulistiyoso Eka Priyana Elisa Nur Faizaty Elpodesy Marlisa Emmy Darmawati Erniati Erniati Erniati Esa Ghanim Fadhallah Eti Rohaeti Fahim M Taqi Firdaus, Jonni Graita Gaiety Jatmiko Harli Prawaningrum Hartoyo Hasniar . Hayatri Sali Setia Heriyanto S Soba Herry Suhardiyanto I Wayan Astika I Wayan Budiastra Idham Sakti Harahap Indrawan, Raden Dikky Indrawan Iriando Wijaya Ita Zuraida Iyus Hendrawan Iyus Hendrawan Jayawarsa, A.A. Ketut Jeffrey Fransiscus Juniska Muria Sariningpuri Kaltika Setya Utami Sumariana Khoirul Mukhtarom Khoirul Umam Kristianingsih, - Latief, Prori Vitaliano Lidya Susanti Lilik Pujantoro Lilik Pujantoro Eko Nugroho Lista Eka Yulianti Lydia Ariani Machfud Machfud Machfud Machfud Mahasin, M. Zaenal Mahdania, Nadya Fazira Islah Maya Wulan Arini Memen Surahman Michael Alexander Hutabarat Mohamad Rahmad Suhartanto Mohamad Solahudin MUHAMMAD YUSUF ANTU Muhammad Yusuf Antu Nanik Purwanti Nelwan, Leopold Oscar nFN Setyadjit nFN Sukarno Nunung Nuryartono Nurfadhillah, Salsa Nurhayati Nurhayati Nurman Susilo Nurul Imamah Nuzul Syah Putra Okky Setyawati Dharmaputra Parlaungan Adil Rangkuti Patiwiri, Abdul Waries Pramita Riskia D. P Purwiyatno Hariyadi Renny Anggraini Ridwan Rachmat Rimba Lestari Rio Viryawan Riska Indaryani Riska Juliana Rizal Syarief Rizal Syarief RIZAL SYARIEF Rofika Rochmawati Rozana - Ruri Wijayanti Salsa Nurfadhillah Selvi Marcellia Setiadjit Setiadjit Setyo Pertiwi Sidiq, Fajar Slamet Budijanto Sugiyono Sugiyono Sugiyono Sugiyono Sukarno Sukarno Sukmawati, Elya Sulusi Prabawati Sunandar, Muhammad Prayoga Supriyanto Supriyanto Supriyanto Suroso . Suroso Suroso Susi Lesmayati Susilo, Nurman SUTRISNO Sutrisno , Sutrisno - Sutrisno Mardjan Sutrisno Sutrisno Sutrisno Sutrisno Tajuddin Bantacut Tjahja Muhandri Tri Yulni Ujang Sumarwan Usman Ahmad Warji Warji Yudha Heryawan Asnawi