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All Journal Jurnal Ilmu Pertanian Indonesia Teknotan: Jurnal Industri Teknologi Pertanian Jurnal AGROTEKNOLOGI Jurnal Keteknikan Pertanian Jurnal Keteknikan Pertanian Tropis dan Biosistem agriTECH Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Warta IHP (Warta Industri Hasil Pertanian) Jurnal Penelitian Pertanian Tanaman Pangan ILKOM Jurnal Ilmiah JURNAL PANGAN Jurnal Teknologi Pertanian Andalas Jurnal Ilmu Kehutanan

Aris Purwanto

Bogor Agricultural University

Author-ID : 3715195

Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Other

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Pemanfaatan TKKS Sebagai Pengisi Komposit Epoxy Untuk Struktur Bergerak Mesin CNC Perkayuan Farkhan .; Yohanes Aris Purwanto; Erizal Hambali; Wawan Hermawan
Jurnal Keteknikan Pertanian Vol. 5 No. 1 (2017): JURNAL KETEKNIKAN PERTANIAN
Publisher : PERTETA

AbstractCNC machinery is widely used at various kind of industrial sector to manufacture of art products up to satellite products. Instead of its massive utilization in automotive and electronic industry which mostly use metallic component, wood working industry has been using it to produces furniture’s, merchandises, and other house ware products which apply light weight non-metallic low density material. High removalrate in wood machining process needs high speed application due to its low density material; however most of wood working CNC machine is built on heavy steel structure for both its supporting structure and moving structure. In fact, the raw material is much lighter than the carrier itself. Its wasteful dynamic movement causes energy loses and vibrations that effect on machining accuracy, live of cutting tool, andproductivity. This research applied new light weight composite material base on renewable resource of oil palm empty fruit bunch (EFB) natural fiber as filler material combine with polymer epoxy as it’s matrix to be constructed as moving mechanical structure of high speed 3D CNC woodworking machine to improve its dynamic performance. Comparative analysis showed that it has better dynamic performance on high speed machining process compared with traditional cast iron materialAbstrakMesin Perkakas CNC (Computerized Numerical Control) digunakan luas oleh industri untuk memproduksi mulai dari benda-benda seni kerajinan hingga untuk membuat satelit. Selain pemanfaatannya secara besar-besaran di industri otomotif dan elektronika yang umumnya menggunakan komponen logam, industri perkayuan telah banyak menggunakannya untuk memproduksi mebel, barang kerajinan, dan peralatan rumah tangga lainnya dengan mengaplikasikan bahan bukan logam seperti kayu yang berberat jenis rendah dan ringan. Tingkat pemotongan yang tinggi pada proses permesinan kayu membutuhkanpermesinan cepat akibat berat jenis bahannya yang rendah tersebut, namun mesin CNC perkayuan umumnya dibangun dengan struktur logam yang berat, baik untuk struktur penopang maupun struktur bergeraknya. Kenyataannya, bahan baku kayunya sendiri jauh lebih ringan ketimbang struktur yang menggerakkannya. Dinamika gerakan pada struktur bergerak yang berat ini menyebabkan pemborosandaya dan getaran berlebih yang mempengaruhi ketelitian, keawetan pahat potong, dan produktivitas. Penelitian ini mengembangkan bahan komposit ringan baru dengan memanfaatkan sumber terbarukan dari limbah tandan kosong kelapa sawit (TKKS) sebagai bahan pengisinya dengan matriks polimer epoxy untuk dibangun sebagai struktur bergerak mesin CNC perkayuan metode permesinan cepat 3 dimensi, untuk meningkatkan unjuk kerja dinamiknya. Analisa perbandingan menunjukkan bahan ini memiliki unjuk kerja dinamik lebih baik pada proses permesinan cepat ketimbang menggunakan besi tuang sebagai bahan tradisionalnya.

Prediksi Tanin dan Total Padatan Tidak Terlarut Buah Kesemek (Diospyros kaki L.) Menggunakan Spektroskopi NIR Indah Kurniasari; Yohanes Aris Purwanto; I Wayan Budiastra; Sobir Ridwani
Jurnal Keteknikan Pertanian Vol. 5 No. 3 (2017): JURNAL KETEKNIKAN PERTANIAN
Publisher : PERTETA

AbstractDetermination of tannin and non-soluble solid content of persimmon are usually carried out by a chemical method, these methods are destructive, time-consuming and can not be applied to the development of online grading. The objective of this study was to develop rapid prediction method of tannin and non-soluble solid content of persimmon non-destructively using NIR Spectroscopy. NIR spectra were measured by NIRFlex N-500 fiber optic solid with the wavelength of 1000-2500 nm. For the reference method, tannin and non-soluble solid content were measured using conventional method. Some pre-processing methods were applied, and the results were calibrated to chemical data using principal component regression (PCR) and partial least square (PLS). The best model for prediction of non-soluble solid content was multiplicative scatter correction (MSC) pre-processing and PLS with a correlation coefficient (r), standard error prediction (SEP) and the ratio of standard deviation to SEP (RPD) of 0.83, 1.48% and 1.59 respectively. The best model for predicting tannin was first derivative Savitzky-Golay (dg1) and PLS with r, SEP and RPD of 0.72, 0.14% and 1.06 respectively. PLS method was better than PCR in predicting non-soluble solid content and tannin of persimmon. AbstrakPenentuan tanin dan total padatan tidak terlarut buah kesemek biasa dilakukan dengan metode kimia, metode ini bersifat destruktif, memakan waktu dan tidak dapat diterapkan untuk pengembangan grading secara on-line. Tujuan penelitian ini adalah untuk memprediksi secara cepat tanin dan padatan tidak terlarut buah kesemek secara non destruktif menggunakan Spektroskopi NIR. Spektrum NIR diukur dengan NIRFlex N-500 fiber optic solid pada panjang gelombang 1000-2500 nm, Untuk metode referensi, kandungan tannin dan total padatan tidak terlarut diukur dengan menggunakan metode konvensional. Beberapa metode pra-pengolahan data NIR diterapkan, dan hasilnya dikalibrasi dengan data kimia menggunakan metode principal component regression (PCR) dan partial least square (PLS). Model terbaik untuk memprediksi non-soluble solid content adalah menggunakan pra-pengolahan multiplicative scatter correction (MSC) dan PLS dengan r, SEP dan RPD masing - masing 0.83, 1.48%, dan 1.59. Model terbaik untuk memprediksi tanin diperoleh dengan menggunakan turunan pertama Savitzky-Golay (dg1) dan metode PLS dengan r, SEP dan RPD masing - masing 0.72, 0.14% dan 1.06. Metode PLS menghasilkan model kalibrasi lebih baik daripada PCR dalam memprediksi tanin dan non-soluble solid content buah kesemek.

Desain Sistem Kontrol dan Monitoring Kondisi Udara pada Controlled Atmosphere Storage Berbasis Mikrokontroler Arduino Uno Widyaningrum Widyaningrum; Yohanes Aris Purwanto; Sutrisno Mardjan
Jurnal Keteknikan Pertanian Vol. 6 No. 1 (2018): JURNAL KETEKNIKAN PERTANIAN
Publisher : PERTETA

AbstractStorage by controlling the composition of air or oxygen and carbon dioxide concentration settings is called controlled atmosphere storage. Controlled atmosphere storage aims at controlling metabolism of fresh product to extended the shelf-life. The concentration of oxygen and carbon dioxide in product aremaintained at a desired concentration. The objective of this research was to design a control and monitoring system of oxygen, carbon dioxide, temperature and relative humidity in the storage by using Arduino Uno microcontroller. Design approach consists of functional and structural design. The main function of thesystem control were to control gas injection, open and close the solenoid valve, control the amount of injection, and reading the sensor. Measurements and testing included sensor calibration and functional testing of the control and monitoring system with no-load conditions. Analysis of the experiment resultswas conducted by using statistical analysis of repeated measures ANOVA. The result of observation and measurements of temperature with no-load conditions was 9.88ºC, RH 73.73%, concentration of carbon dioxide 2.22% and concentration of oxygen 4.63%. Accuracy between setpoint and actual temperature was of 98.84%. Accuracy between setpoint and actual RH was of 97.55%. Accuracy between setpoint and actual oxygen was of 83.98%. Accuracy between setpoint and actual carbon dioxide was of 74.26%.AbstrakPenyimpanan dengan cara pengaturan komposisi udara atau pengaturan konsentrasi oksigen dan karbondioksida dikenal dengan penyimpanan dengan pengendalian atmosfer. Teknik atmosfer terkendali sekitar produk bertujuan untuk mengendalikan metabolisme produk segar sehingga masa simpan dapat diperpanjang. Konsentrasi oksigen dan karbondioksida disekitar produk dijaga pada suatu konsentrasi yang diinginkan. Penelitian ini bertujuan untuk merancang sistem kontrol dan monitoring oksigen dan karbondioksida serta suhu dan kelembaban di dalam ruang penyimpanan dengan mengimplementasikan mikrokontroler Arduino Uno. Pendekatan rancangan terdiri dari dua jenis yaitu rancangan fungsional dan rancangan struktural. Fungsi dan struktur utama dari sistem yang dibuat adalah sistem pengontrolan terhadap injeksi gas, buka tutup solenoid valve, mengontrol lama injeksi, dan melakukan pembacaan sensor. Pengukuran dan pengujian meliputi kalibrasi sensor dan pengujian fungsional kinerja kontrol dan monitoring. Analisis hasil percobaan dilakukan dengan menggunakan analisis statistik repeated measures ANOVA. Hasil pengamatan dan pengukuran suhu adalah 9.88ºC, RH 73.73%, karbondioksida 2.22% dan oksigen 4.63%. Perbandingan antara setpoint dan aktual diperoleh akurasi suhu 98.84%. Perbandinganantara setpoint dan aktual diperoleh akurasi RH 97.55% Perbandingan antara setpoint dan aktual diperoleh akurasi oksigen 83.98%. Perbandingan antara setpoint dan aktual diperoleh akurasi karbondioksida74.26%.

Pengaruh Receiver Terhadap Kinerja Refrigerasi Mesin Pembeku Paulus Sukusno; Armansyah H. Tambunan; Radite Praeko Agus Setiawan; Yohanes Aris Purwanto
Jurnal Keteknikan Pertanian Vol. 6 No. 3 (2018): JURNAL KETEKNIKAN PERTANIAN
Publisher : PERTETA

AbstractFreezing is the best method to preserve the quality of food for a long period of time compared to other technologies such as drying and canning. Technology of freezing requires more energy than other preservation technologies, however. Therefore, an energy efficient freezer is needed. This research aims to the effect of utilization of a receiver to improve the freezer performance efficency. The research is conducted on freezer used to cool and freeze 1 kg of water from a temperature of 27oC to -14oC, then a receiver is installed in the freezer and the same research is conducted (the type and setting of expansion valve and test materials are the same). The refrigerant medium is R404A working fluid. The receiver is installed between condenser and filter dryer in the system circuit of the freezer. The result shows that the utilization of receiver increases the coefficent of performance (COP) from 2.24 to 2.69 and reduce the electricity consumption. The time required for freezing becomes shorter particularly on the transition of liquid to solid phase (ice) . Consequently, the freezing rate becomes quicker and provides advantages for application of food freezing.AbstrakPembekuan merupakan metode yang paling baik untuk menjaga kualitas makanan dalam jangka waktu lama, dibanding dengan teknologi lain seperti pengeringan dan pengalengan. Namun teknologi pembekuan membutuhkan lebih banyak energi daripada teknologi pengawetan lainnya, karena itu diperlukan mesin pembeku yang hemat energi. Penelitian ini bertujuan untuk mempelajari pengaruh penggunaan receiver untuk meningkatkan efisiensi kinerja mesin pembeku. Penelitian dilakukan pada mesin pembeku yang digunakan untuk mendinginkan dan membekukan air 1 kg dari suhu 27oC sampai -14oC, selanjutnya penelitian mesin pembeku ditambahkan receiver dan dilakukan penelitian yang sama (bukaan katup ekpansi diatur tetap dan sama, serta bahan uji dilakukan dalam kondisi sama). Media pendingin menggunakan fluida kerja R404A. Receiver diletakkan di antara kondensor dan filter dryer pada rangkaian sistem mesin pembeku. Hasil penelitian menunjukkan bahwa penggunaan receiver pada mesin pembeku berdampak pada peningkataan koefisien kinerja (COP) dari 2.24 menjadi 2.69, dan terjadi penghematan konsumsi energi listrik. Waktu proses pembekuan menjadi lebih singkat, khususnya pada tahap perubahan fase cair menjadi es, sehingga laju pembekuan menjadi lebih cepat dan memberi keuntungan untuk penerapan pada pembekuan bahan pangan.

Rapid Assessment of Fresh Beef Spoilage Using Portable Near-Infrared Spectroscopy Akeme Cyril Njume; Y. Aris Purwanto; Dewi Apri Astuti; Slamet Widodo
Jurnal Keteknikan Pertanian Vol. 9 No. 3 (2021): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.09.3.79-86

The objective of this study was to develop a prediction model to assess fresh beef spoilage directly with the use of a portable near-infrared spectroscopy (NIRS), without conducting a chemical method. Three fresh beef samples were bought from a slaughterhouse and traditional market on separate days. Spectra were acquired using a portable Scio spectrometer with wavelength 740-1070 nm, and two-third was used for calibration sets and one-third for validation sets. Partial least square regression and cross-validation were used to develop a model and equation for predicting beef spoilage. The changes observed were changed in color, water loss, and muscle hardness. The best predictive model was obtained from the original spectra (no pre-process) results as follows (R2C = 0.9, Rp = 0.86, SEC = 0.61, SEP = 0.69 and RPD = 3.53). Multiple Scattered Correlation (MSC) pre-processing method gave a good and acceptable model with results as follows; Rc = 0.89, SEC = 0.66, SEP = 0.83 and RPD = 2.91. NIRS showed variability of the samples and rate of spoilage, hence, can be used to assess quality and safety. Further studies are needed to develop a robust model to predict fresh beef spoilage using a portable NIRS Scio.

Prediksi Indeks Panen Jambu “Kristal” secara Non Destruktif Menggunakan Portable Near Infrared Spectrometer Ayu Putri Ana; Y. Aris Purwanto; Slamet Widodo
Jurnal Keteknikan Pertanian Vol. 9 No. 3 (2021): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.09.3.103-110

“Crystal” guava (Psidium guajava L.) is a climacteric fruit that is generally harvested by farmers based on cultivation experience. In this study, portable 740-1070 nm of near-infrared spectrometer was employed to rapidly predict harvest indices of “crystal” guava, by means of non-contact and non-destructive approach. Samples of guava fruit were collected at days after anthesis (DAS) of 91, 94, 97, and 100. The total number of each sample were 30 fruits. The firmness, soluble solid content, acidity and sugar acid ration were evaluated as quality parameters. Partial least square (PLS) method was utilized for data processing. It was found that Standard Normal Variate (SNV) resulted the best pre-processing for all quality parameters. Performances of best models were demonstrated by coefficient of corraltion (R), standard error of calibration (SEC) and standard error of prediction (SEP), which were respectively 0.88, 6.21, 5.92 for firmness prediction, 0.74, 0.84, 0.79 for soluble solid content prediction, 0.59, 0.19, 0.26 for acidity prediction, and 0.71, 1.21, 1.58 for sugar acid ratio prediction model.

Portable/Handheld NIR sebagai Teknologi Evaluasi Mutu Bahan Pertanian secara Non-Destruktif Widyaningrum Widyaningrum; Yohanes Aris Purwanto; Slamet Widodo; Supijatno; Evi Savitri Iriani
Jurnal Keteknikan Pertanian Vol. 10 No. 1 (2022): April 2022
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.010.1.59-68

The development of NIR technology has now reached a higher level. The transition from chemical analysis which requires a lot of time and money makes NIR technology as a technology option that is efficient, fast and does not produce waste residues. Initially, the NIR was made in a benchtop type with a large size, but now it has developed into a handheld and portable NIR. This is based on the need to detect the content of agricultural materials in real-time in the field which is not possible with benchtop NIR. The use of handheld/portable NIR technology is widely applied in agriculture to measure water content, soluble solid contents, pH, mechanical properties of agricultural materials and so on. Portable/handheld NIRs have small dimensions and are light in weight so as to provide convenience in conducting direct analysis compared to using a large benchtop type NIR. However, the accuracy, measurement sensitivity, noise level, and optical reading stability are not better than benchtop NIR. So that the potential for developing portable/handheld NIRs as IoT-based sensing instruments is still open to be done.

KARAKTERISASI SELULOSA KULIT ROTAN SEBAGAI MATERIAL PENGGANTI FIBER GLASS PADA KOMPOSIT Siti Nikmatin; Y. Aris Purwanto; Tieneke Mandang; Akhirudin Maddu; Setyo Purwanto
JURNAL AGROTEKNOLOGI Vol 5 No 01 (2011)
Publisher : Faculty of Agricultural Technology, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abundant of natural resources in Indonesia give advent to the development of Biocomposite technology. Furthermore, agricultural wastes as one typical sources of bio-composite are available everywhere in Indonesia. Rotan-bark is one kind of agriculture waste that can be use as main input for bio-composite. This research deals with characterisation of cellulose content from rotan-bark as substitute for fibber glass as filler in composite. Cellulose from Rotan-bark made in long and short fibbers by means of fermentation. In this case, aspergillus niger is used as fermentation agent. Rotan type, Rotan mass, and temperature are maintained constant during the treatment. Variable of fermentation time ( tF ) and fungi-volume ( Vf) are varied. Fermentationtime range from: 4,5,6,8 to 10 days. Extraction of rotan-bark-cellulose by means of fermentation developed specific enzyme. This enzyme can break-down the filament of non-cellulose plant. Then this enzyme can separated fibber component from: parenchyma, xylem and epidermis at weight density = 0,58 and optimal efficiency up to 60,8% at tF = 8 days ; Vf = 15 ml. X-Furthermore, XRay Diffraction (XRD) shows the crystallized structure obtained from rotan-bark cellulose at Apparent Crystal Size (ACS) = 29130,42 nm and η (inhomogeneous mechanical micro strain) = 0,94 x 10-3 . Characterization by means of SEM-EDS shows rotan-bark cellulose composed from : C = 47,5 % massa, O = 46 % massa and mineral. The result is close to recommended fibber glass composition for industrial application. Keywords : fibber glass, extraction, celulosa, bio-composite, aspergilus niger

Transportasi dan Penyimpanan Curah pada Cabai Keriting Segar Sandro Pangidoan Siahaan; Y. Aris Purwanto
Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol 8, No 1 (2020)
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jkptb.2020.008.01.06

Cabai merah adalah salah satu komoditas pertanian yang dibutuhkan masyarakat Indonesia dan bernilai ekonomis yang tinggi. Cabai merah mudah rusak dan dibutuhkan dalam bentuk segar, sehingga cara pengemasan yang tepat serta transportasi yang baik menjadi titik kritis pascapanen untuk menjaga kesegaran produk pada saat didistribusikan sampai ke tangan konsumen. Tujuan dari penelitian ini adalah melakukan transportasi langsung dengan pengemasan curah pada cabai keriting segar dan mengevaluasi pengaruh dari transportasi dan pengemasan terhadap susut bobot, kekerasan, warna dan kadar air pada cabai keriting segar. Pengemasan dilakukan pada dua jenis kemasan yaitu kemasan karton (kardus) dan keranjang plastik. Susut bobot terjadi di setiap perlakuan kemasan dan transportasi meskipun hasil analisis sidik ragam menunjukkan perlakuan kemasan dan transportasi tidak berbeda nyata terhadap susut bobot cabai. Kemasan kardus menunjukkan hasil yang lebih baik dalam menekan susut bobot dibandingkan keranjang plastik. Penurunan kadar air berkorelasi dengan susut bobot yang terjadi akibat transportasi dan lebih tampak lagi setelah dilakukan penyimpanan selama 14 hari.

Transportasi Curah Cabai Merah Segar dan Introduksi Pengukuran Getaran Berbasis Android Sandro Pangidoan Siahaan; Y. Aris Purwanto
Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol 7, No 3 (2019)
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jkptb.2019.007.03.07

Cabai merah adalah salah satu komoditas pertanian yang dibutuhkan masyarakat Indonesia dan bernilai ekonomis yang tinggi. Cabai merah mudah rusak dan dibutuhkan dalam bentuk segar, sehingga transportasi yang baik menjadi titik kritis pascapanen untuk menjaga kesegaran produk pada saat didistribusikan sampai ke tangan konsumen. Tujuan penelitian ini adalah melakukan perbandingan antara transportasi sesungguhnya cabai merah segar secara curah dan simulasi transportasi skala laboratorium dan mengintroduksi cara pengukuran getaran baru berbasis Android. Pengukuran getaran yang diperoleh di lapangan Android Smartphone menggunakan aplikasi berskala MMI (Modified Mercalli Intensity Scale). Hubungan antara MMI dengan frekuensi dan amplitudo didekati dengan hubungan antara MMI dengan amplitudo pada frekuensi yang sama dan MMI dengan frekuensi pada amplitudo yang sama melalui regresi polynomial ordo tiga. Berdasarkan hasil penelitian ini, pengukuran getaran berbasis Android dapat digunakan sebagai gambaran langsung secara praktis untuk mengukur pengaruh getaran dalam transportasi.

Co-Authors . Sutrisno Akeme Cyril Njume Akhirudin Maddu Akrom, Akrom Ali Khumaidi Andi Muhammad Akram Mukhlis Armansyah H. Tambunan Ayu Putri Ana Bruce A. Welt, Bruce A. Chusnul Arief Cicih Sugianti Desrial DEWI APRI ASTUTI Dondy A Setyabudi Dwi Dian Novita Edy Hartulistiyoso Emmy Darmawati Enrico Syaefullah Erizal Hambali Evi Savitri Iriani Fandra Wiratama Farkhan . Hadi Karia Purwadaria, Hadi Karia Hari Wijayanto Herna Permata Sari Herry Suhardiyanto Heru Sukoco I Nyoman Jaya Wistara I Wayan Budiastra Indah Kurniasari Iriani, Evi Savitri Ismi M.Idris Iswara, Vidya Kukuh Murtilaksono Kurniawan Yuniarto Lina Karlinasari Merry Sabed Musdalifah, Nuzlul Nanik Purwanti Nisa, Khaerun Novriaman Pakpahan Nurul Khumaida Olly S. Hutabarat Palupi, Endah R. Paulus Sukusno Priyantono, Eko Putri Wulandari Zainal Radite Praeko Agus Setiawan Ririn Noerianty Effendi Roedhy Poerwanto Rokhani Hasbullah Sandro Pangidoan Siahaan Sandro Pangidoan Siahaan Seiichi Oshita Setiawan, Asep S Setyo Purwanto Setyo Purwanto Siti Nikmatin Slamet Budijanto Slamet Widodo Slamet Widodo Sobir Sobir Sony Hartono Wijaya Sri Citra Yuliana Madi Sukrisno Widyotomo Supijatno Suryani, Ani Sut risno Sutrisno . Sutrisno Mardjan Tengku Mia Rahmiati Tieneke Mandang Titi Candra Sunarti Ummah, Narjisul Usman Ahmad Wawan Hermawan Weliana Rudi Widyaningrum Widyaningrum Widyaningrum Widyaningrum Yose Rizal Kurniawan Yoshinori Kawagoe Yoshio Makino Yudi Chadirin Yusuf, Sri Malahayati

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