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Optimasi Suhu dan Waktu Proses Delignifikasi pada Isolasi Selulosa dari Tongkol Jagung Dewi Sartika; Amanda Patappari Firmansyah
Jurnal Ilmiah Teknologi Pertanian Agrotechno Vol 7 No 1 (2022)
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITPA.2022.v07.i01.p10

This study aims to optimize the temperature and time of the delignification process to isolate cellulose from corn cobs. The research was carried out in stages, namely preparing corn cob powder samples and the delignification process. Statistical regression modeling and optimization of the temperature and time of the delignification process used the response surface (RSM) methodology. Central Composite Design (CCD) was used for experimental design and analysis of the effect of temperature and time of the delignification process on lignin, cellulose, hemicellulose, and fiber yields. The optimum process conditions were determined using the desirability method. The analysis of the diversity of the quadratic polynomial model shows that the temperature and time of the deligninification process significantly affect changes in the characteristics of lignin, cellulose, hemicellulose, and fiber yields. The optimal condition of the corncob fiber delignification process was obtained at a temperature of 100.38? for 79.17 minutes. It produced the characteristics of delignified fiber with lignin, cellulose, hemicellulose, and yields of 6.47%, 73.73%, 5, respectively. 39% and 57.76% w/w. The optimization model is valid with a desirability value of 0.71. Thus, the temperature and time optimization model of the delignification process can be applied in real conditions to produce delignified corncob fiber with optimum characteristics.

Karakteristik Sawi Hijau (Brassica rapa var parachinensis) yang Dihasilkan dari Aplikasi Bakteri Pemacu Pertumbuhan I Gusti Ayu Lani Triani; Ida Bagus Wayan Gunam
Jurnal Ilmiah Teknologi Pertanian Agrotechno Vol 7 No 1 (2022)
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITPA.2022.v07.i01.p08

This study tries to use the roots of bamboo plants that grow in Bali as Plant Growth Promoting Rhizobacteria and applied to vegetable plants to see the physical characteristics of these vegetables. This study aims to determine the physical characteristics of greens mustard produced by using the application of growth-promoting bacteria derived from the roots of bamboo (Bambusa maculata). The characteristics of the greens mustard were compared with the use of commercial PGPR (products from Central Java farmers) and without the use of growth-promoting bacteria. Based on the results of the research on the physical characteristics of greens mustard (Brassica rapa var parachinensis) the results of the application of growth-promoting bacteria from bamboo roots obtained plant heights ranging from 39 cm, weight 34 – 44 g, number of leaves 9 – 12 pieces, texture 22.18 – 30.31 kg .m/sec2, brightness level 42.13 – 47.13 and total dissolved solids 4.4 – 5.1% brix, slightly different from the treatment without PGPR and commercial PGPR. For this reason, it is necessary to continue cultivation with growth-promoting bacteria derived from natural ingredients that grow in Bali, this is an effort towards environmentally friendly cultivation so that it is expected to get quality results and are safe for consumption.

Pengaruh Pengaruh Konsentrasi Polivinil Alkohol dan Lama Pengadukan Pada Proses Pemanasan terhadap Karakteristik Komposit Biotermoplastik Maizena dan Glukomanan Sando F. Limbong; Bambang Admadi Harsojuwono; Amna Hartiati
Jurnal Ilmiah Teknologi Pertanian Agrotechno Vol 7 No 1 (2022)
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITPA.2022.v07.i01.p05

This study aims to determine the effect of the concentration of polyvinyl alcohol (PVA) and the stirring time on the heating process and their interactions on the characteristics of the cornstarch-glucomannan biothermoplastic composite and determine the concentration of polyvinyl alcohol (PVA) and the duration of stirring the heating process which produces the best biothermoplastic composite. This study used a factorial randomized experimental group design. The first factor is the concentration of polyvinyl alcohol which consists of 4 levels, namely 3,5%, 4%, 4,5%, and 5% (w/w). The second factor is the stirring time on the heating process which consists of 4 levels, namely 3, 4, 5, and 6 minutes. The variables observed in this study were tensile strength, elongation at break, elasticity, swelling, water vapor transmission rate, biodegradation, and functional group. The resulting data was analyzed and continued with Duncan's Multiple Range Test. The results showed that the concentration of polyvinyl alcohol (PVA) had a very significant effect on tensile strength, elongation at break, and elasticity, but had no significant effect on swelling, water vapor transmission rate, and biodegradation. While the stirring time on the heating process has a very significant effect on tensile strength, and elasticity, but has no significant effect on elongation at break, swelling, water vapor transmission rate, and biodegradation of biothermoplastic maizena-glucomannan. The interaction between treatments has no significant effect on the characteristics of biothermoplastic. The best biothermoplastic composites were composites with a polyvinyl alcohol concentration of 5% and a stirring time of 6 minutes with a tensile strength of 29,47 MPa, elongation at break of 10,99%, elasticity of 268,21 MPa, swelling of 65,02%, water vapor transmission rate of 1,05 g/m2.hour, and biodegradation rate for 6 days. The results of functional group analysis showed the presence of functional groups hydroxyl (O-H), carbonyl (C=O), C=C aromatic, carboxyl (C-O), and hydrocarbon -(CH2)n.

Alat Pengering Padi Tenaga Surya Berbasis IoT (PaTeSIT) Sebagai Solusi Masa Depan Petani Padi Sri Septi Dyah Pratiwi; Sudarti Sudarti; Trapsilo Prihandono
Jurnal Ilmiah Teknologi Pertanian Agrotechno Vol 7 No 1 (2022)
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITPA.2022.v07.i01.p07

Penelitian ini bertujuan untuk mengetahui mekanisme rancangan alat yang digunakan untuk membantu proses pengeringan padi serta mengetahui seberapa besar minat petani terhadap alat pengering padi tenaga surya berbasis IoT. Kegunaan penelitian ini memberi gambaran kepada masyarakat tentang keunggulan dan kelemahan rancangan alat pengering padi serta memberi informasi tentang ketepatan penggunaan sistem pada rancangan bahan pengering padi ini. Materi yang digunakan adalah masing-masing padi dengan kapasitas sekitar berisi 5 kwintal padi dengan mengunakan rancangan bangun menggunakan sistem IoT. Data primer menggunakan kuisioner kepada petani yang mempunyai lahan persawahan di kecamatan Megaluh dan Kecamatan Tembelang kabupaten Jombang masing-masing 10 petani. Metode yang digunakan dalam penelitian ini adalah Studi Kasus dan review artikel. Penelitian yang dilakukan secara kualitatif dan kuantitatif. Data dalam penelitian ini ditabulasi dengan menggunakan analisa deskriptif dan diuji menggunakan analisa ragam dua arah pola tersarang. Hasil peneletian menunjukan bahwa proses pengeringan padi dengan menggunakan alat IoT berpengaruh sangat nyata (P<0,01) terhadap kualitas panen, bobot panen, serta harga jual padi. Performans Rancangan alat dengan menggunakan system IoT lebih baik dibandingkan dengan proses pengeringan padi secara biasa maupun dengan bantuan alat pengering padi lainnya. Daya jual yang didapatkan lebih tinggi menggunakan alat berbasis IoT dari pada padi yang dikeringkan dengan bantuan sinar matahari atau manual. Kata Kunci : Petani Padi, Sistem IoT, Panel surya, Padi

Unjuk Kinerja Sistem Aerasi Dalam Kotak Penyimpanan Kentang (Solanum tuberrosum L) Tipe Kotak Yohanes Setiyo; Dandy Zulfikar Sulthan Siata; I Gusti Ketut Arya Arthawan
Jurnal Ilmiah Teknologi Pertanian Agrotechno Vol 7 No 1 (2022)
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITPA.2022.v07.i01.p01

The purpose of this study was to determine the performance of the box type potato storage aeration system in terms of changes in temperature and RH of the air during storage. Research on a box type aeration system for potato storage was carried out by measuring the temperature and RH of the incoming air, the temperature and the RH of the outgoing air during storage of potatoes for 21 days. In addition, calculating the heat of respiration, heat to increase the temperature of potatoes, heat to evaporate water and heat lost to the environment using a simple mathematical model approach. The results showed that the temperature and RH of the room and the incoming air flow tended to form a linear pattern, while the RH of the process room and the outgoing air flow tended to form a polynomial pattern. The temperature of the potato storage room was in the range of 24.07-25.70oC and the RH was in the range of 56.0-65.6%. The heat value of respiration varied between 261.42 - 311.88 k.Joule/kg potato tubers, because the storage temperature was 24.07-25.70oC. The heat generated by the respiration process used to evaporate water from the potato tubers to the environment is 6.01±0.3% on average, the average heat to raise the temperature of the potato tubers and the air temperature around the potato is 24.08±1, 3%, and the average heat loss to the environment with the flowing air is 59.89±3.4%.

Analisis N Total dan Kandungan Logam Berat Cu dan Zn pada Tanah Sawah di Daerah Pengairan Sungai Cikijing Kecamatan Rancaekek Leony Agustine; Rija Sudirja; Rachmat Harryanto
Jurnal Ilmiah Teknologi Pertanian Agrotechno Vol 7 No 1 (2022)
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITPA.2022.v07.i01.p06

This study aims to determine: 1) evaluate the distribution of total N and the distribution of heavy metals Cu and Zn in paddy fields in the Cikijing River Irrigation Area, Rancaekek District, 2) the amount of total N and the distribution of heavy metals Cu and Zn in paddy fields in the Cikijing River Irrigation Area, Rancaekek District. The experiment was conducted in paddy fields contaminated with factory waste in the Cikijing River Watershed, Rancaekek District and followed with the analysis of the soil at the Laboratory of Soil Fertility and Plant Nutrition, Faculty of Agriculture, Padjadjaran University. The experiment was conducted in February 2017 to November 2017. The determination of sample points is based on Homogeneous Soil Map Unit (SLH), which is made by overlay map on the map of soil types, slope maps and land use maps of research areas. The number of samples is 8, which is located on the 5 villages. The variables observed and measured in this study included total N and heavy metals Cu and Zn. The results showed that the total N in the research area was low and moderate, but at some location points there was a very low N content, while heavy metal Cu at several locations was above the quality standard and heavy metal Zn was above the quality standard.

Uji Efektivitas Nutrisi Ab Mix dan Jenis Media Tanam terhadap Produksi Hasil Setek Batang Tanaman Mint (Mentha spicata L.) pada Sistem Wick Hidroponik Puan Fatulillah; Bastaman Syah; Rommy Andhika Laksono
Jurnal Ilmiah Teknologi Pertanian Agrotechno Vol 7 No 1 (2022)
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITPA.2022.v07.i01.p03

Mentha spicata L. or commonly known as spearmint is an herbaceous plant that has many benefits in this pandemic period, but land limitations that become a production problem can be overcome with the use of hydroponics wick system. This study aims to get the best combination treatment of AB Mix nutrients and planting media to the production of mint plant stems (Mentha spicata L.) in hydroponic wick systems. The research was conducted at the screen house of SMKN Pertanian Karawang, East Karawang Subdistrict, Karawang Regency in June to July 2021. The research method used is an experimental method with a randomized design group (RAK) of single factors consisting of 12 treatments with 3 repeats. The data is analyzed with a variety analysis and if the 5% F test shows a real different result, then continued with the DMRT (Duncan Multiple Range Test) test at the level of 5%. Paramater observed included plant height (cm), number of leaves (strands), wet weight of plants (grams), and plant growth rate (cm/week). The results showed that there was a noticeable influence on the observation parameters of plant height aged 2, 3, 4, 5, and 6 MST, the number of leaves aged 5 and 6 MST, wet weight of plants, wet weight of plants without roots and plant growth rate.

Pengaruh Penambahan Jeruk Nipis Terhadap Ph, Total Antosianin Dan Aktivitas Antioksidan Pada Minuman Bunga Telang Putu Ayu Gaudiya Waisnawi; Gusti Ayu Kadek Diah Puspawati; Luh Putu Wrasiati
Jurnal Ilmiah Teknologi Pertanian Agrotechno Vol 7 No 1 (2022)
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITPA.2022.v07.i01.p11

Bunga telang memiliki banyak khasiat salah satunya mengandung antosianin yang berfungsi sebagai antioksidan dan pigmen. Kelemahan pemanfaatan bunga telang pada pigmen antosianin bersifat kurang stabil. Antosianin lebih stabil dalam larutan asam dibandingkan larutan basa. Penambahan jeruk nipis yang kaya asam sitrat diharapkan dapat meningkatkan keasaman pH bunga telang (pH 5) karena jeruk nipis memiliki pH 2,48-2,5. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan jeruk nipis terhadap karakteristik minuman bunga telang dan menentukan penambahan jeruk nipis yang tepat untuk menghasilkan minuman bunga telang dengan karakteristik terbaik. Metode penelitian menggunakan rancangan percobaan Rancangan Acak Lengkap (RAL) dengan perlakuan penambahan jeruk nipis yang terdiri dari 6 level yaitu: 0%, 1%, 2%, 3%, 4%, 5%. Data yang diperoleh dianalisis dengan sidik ragam dan apabila perlakuan berpengaruh terhadap variabel yang diamati maka dilanjutkan dengan uji Duncan Multiple Range Test. Hasil penelitian menunjukkan penambahan jeruk nipis berpengaruh sangat nyata (P<0,01) terhadap pH, kadar vitamin C, total antosianin dan aktivitas antioksidan. Penambahan jeruk nipis 5% merupakan hasil terbaik dalam menghasilkan minuman bunga telang, dengan karakteristik pH 4,81, kadar vitamin C 5,47%, total antosianin 2,19 mg/g dan aktivitas antioksidan 45,60%. Penambahan asam sitrat berpotensi meningkatkan stabilitas antosianin dan antioksidan minuman bunga telang melalui penurunan pH, peningkatan total antosianin, peningkatan vitamin C dan peningkatan akitivitas antioksidan. Kata kunci: bunga telang, jeruk nipis, aktivitas antioksidan, stabilitas antosianin

Pengaruh Konsentrasi Campuran Maizena dan Glukomanan dengan Lama Pengeringan terhadap Karakteristik Komposit Bioplastik Rio Rambo Siallagan; Bambang Admadi Harjosuwono; Lutfi Suhendra
Jurnal Ilmiah Teknologi Pertanian Agrotechno Vol 7 No 1 (2022)
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITPA.2022.v07.i01.p02

Penelitian ini bertujuan untuk mengetahui pengaruh konsentrasi campuran maizena dan glukomanan dengan lama pengeringan serta interaksi keduanya terhadap karakteristik bioplastik serta menentukan konsentrasi campuran maizena-glukomanan dengan lama pengeringan yang terbaik. Penelitian ini menggunakan Rancangan Acak Kelompok Percobaan Faktorial. Faktor pertama adalah konsentrasi campuran maizena-glukomanan dari 4 taraf, yaitu 4%, 5%, 6%, dan 7% (b/b). Faktor kedua adalah lama pengadukan yang terdiri dari 4 taraf, yaitu 5,6,7, dan 8 jam. Hasil penelitian menunjukkan bahwa konsentrasi campuran maizena-glukomanan dengan lama pengeringan berpengaruh sangat nyata terhadap kuat tarik, perpanjangan saat putus dan pengembangan tebal/swelling, tetapi tidak berpengaruh nyata terhadap biodegradasi. Interaksi antar perlakuan berpengaruh nyata terhadap kuat tarik dan laju transmisi uap air. Konsentrasi asam stearat 6% dan lama pengeringan 6 jam menghasilkan karakteristik komposit bioplastik terbaik dengan nilai kuat tarik sebesar 22,82 MPa, perpanjangan saat putus sebesar 11,01 %, nilai elastisitas sebesar 353,50 MPa, nilai penyerapan air sebesar 87,98%, nilai laju transmisi uap air sebesar 1,42 g/m2.jam dan laju biodegradasi selama 7 hari. Hasil analisis gugus fungsi menunjukkan komposit bioplastik maizena glukomanan mengandung gugus hidroksil (O-H), karbonil (C=O), karboksil (C-O) dan hidrokarbon -(CH2)n.

Efektivitas Pemakaian Mesin Magic Sugar Cane Terhadap Penurunan Kualitas Nira pada Sistem Tebang Angkut Retno Muji Rahayu; Warkoyo Warkoyo; Noor Harini; Rista Anggriani
Jurnal Ilmiah Teknologi Pertanian Agrotechno Vol 7 No 1 (2022)
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITPA.2022.v07.i01.p09

Sugarcane plantations have a role in the development of agriculture in Indonesia. Sugarcane plants needed by industry as raw materials for making sugar, which became nine staples. National sugar production has decreased productivity in terms of yield due to the process of delaying milling (down time). Milling delays of up to three days can decrease the quality of sugarcane juice as reviewed from the increase %brix, decreased pH, increase in sugar content reduction %brix and decrease HK. Design the magic machine sugar cane into a sugarcane harvesting machine tool with sugarcane juice output that aims to optimize the quality of sugarcane juice so that there is not fermentation process and inhibit the hydrolysis of sucrose caused by enzymatic reactions and microbiological activity. The method of design starts from the stage of drafting, identification of problems, solution, designing and prototype. The results of the Magic Machine Sugar Cane design are designed with a height of 1.85 meters and a width of 1.65 meters and a length of 3.75 meters consisting of diesel components, cutting blades, cane carriers, cane cutters, wheels, roll mills, filters, handles, frame body and equipped with a storage tube with the principle of maintaining the sugarcane juice temperature to 5oC. Magic Machine Sugar Cane effective in maintaining the quality of the sugarcane juice during the process of the cutting and transport system.

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Contact Name
-

Contact Email
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Phone
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Journal Mail Official
-

Editorial Address
-

Location
Kota denpasar,

Bali

INDONESIA