Article Per Year (5 Year)
p-Index From 2021 - 2026
0.702
P-Index
This Author published in this journals
All Journal Jurnal BETA (Biosistem dan Teknik Pertanian)
Yohanes Setiyo
Program Studi Teknik Pertanian dan Biosistem , Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
Teknik Pendinginan dengan Konsentrasi Es Kering dan Lama Waktu Penyimpanan Dingin terhadap Mutu Sawi Putih Ni Wayan Diana Sepriani; Ida Ayu Rina Pratiwi Pudja; Yohanes Setiyo
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 11 No 2 (2023): September
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JBETA.2023.v11.i02.p10

Abstract

Chinese cabbage is one of the vegetables that has a high enough nutritional value as a source of vitamins and minerals. This study aims to obtain the best storage time and temperature during cold storage on the quality of Chinese cabbage. Experimental Design This study used a one-factor Completely Randomized Design (CRD) consisting of 3 levels, namely (P0) as a control/without dry ice, (P1) using 1 kg of dry ice and (P2) using 2 kg of dry ice stored in styrofoam box for 8 hours with observation times every 0 hours, 2 hours, 4 hours, 6 hours and 8 hours to validate this research, it was repeated three times. Parameters observed in this study include material temperature, cooling rate, weight loss, color difference, and shelf life. The results showed that the use of dry ice can maintain the quality of cabbage compared to without using dry ice during storage. The best storage time is 8 hours and the best temperature is 13oC to 10oC. The amount of ice needed to reach the optimal temperature in cold storage is more than 1 kg and or less than or equal to 2 kg of dry ice for 3 kg Chinese cabbage.
Dinamika Suhu dan Kelembaban Udara pada Penyimpanan Kentang (Solanum tuberosum L.) Bibit Tipe Para-Para M. Ikram; Yohanes Setiyo; I Gusti Ketut Arya Arthawan
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 11 No 2 (2023): September
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JBETA.2023.v11.i02.p16 Abstract

Abstract

Farmers in Bali have not been able to produce good seeds due to failures at the storage stage and are still dependent on potato seeds from the G2-G4 group imported from outside. The aim of this study was to determine the dynamics of air temperature and humidity (RH) during the storage of potato seeds and the physical changes of potato seed tubers after storage. Parameters measured included temperature and humidity during storage of potatoes, analysis of mass and energy balances, calculation of respiration heat, heat for increasing the temperature of potatoes, heat for water evaporation, and heat lost to the environment with a simple mathematical model approach. The results showed that temperature tends to form a quadratic polynomial pattern, while RH tends to form a linear pattern. The temperature of the potato storage room was in the range of 29.50 ºC - 29.09 ºC and the RH was in the range of 73.00% - 81.80%. Respiration heat value varies between 470.26 - 491.30 Watts. The heat generated from the respiration process is 72 -143 watts, the heat to raise the temperature of the potato tubers around the potatoes is 2.02 Watts; 1.81 Watts; 3.80 Watts; 2.60 Watts; 10.70 Watts; and 15.20 Watts. The heat lost to the environment forms a linear pattern. Para-Para is capable of creating conditions for the storage and supply of oxygen that, for physical change, are almost non-existent.
PENGARUH PENGGUNAAN MEDIA TANAM ARANG SEKAM TERHADAP BUDIDAYA KENTANG BIBIT (Solanum Tuberosum L.) VARIETAS GRANOLA KELOMPOK G0 Jarinsen Yanardo Purba; Yohanes Setiyo; Sumiyati Sumiyati
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 11 No 2 (2023): September
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JBETA.2023.v11.i02.p22

Abstract

Seeds are an important factor in the success of planting potatoes. In Indonesia, the availability of quality potato seeds is very small. The aims of this research were (1) to find out the best composition of the rice husk charcoal and soil planting medium in terms of the physical properties of the planting medium and  (2) to find out the best media capable of optimally producing seed potatoes with the best quality. This study used a factorial design with two factors. The first factor is the composition of the planting medium which consists of 5 levels, the second factor is the observation time which consists of 4 levels. Five levels of cultivation treatment consisted of husk charcoal and soil, four levels of observation were 2 weeks, 4 weeks, 6 weeks and 8 weeks. husk charcoal 100%, soil 100%, husk charcoal: 50% soil: 50%, husk charcoal: 75% soil: 25%, and husk charcoal: 25% soil: 75%. The parameters observed in this study included the porosity of the planting medium, pH and electrical conductivity of nutrients, volume of nutrients bound to the growing media, plant development and productivity. Judging from the physical properties, the results showed that the media of 100% husk charcoal had the best porosity of 55.35%, and a pH value of 6.7. Husk charcoal: 50% soil: 50% yields water availability for plants 22.04% w.b, has the highest binding of nutrients with a value of 742 µS/cm, plant height 74 cm, maximum number of leaves 14 leaf branches, root length down 63 cm, and the average number of tubers is at most 7 knol/plant. Treatment of rice husk charcoal: soil 50% : 50% was the best capable of producing potato seeds by producing a tuber weight of 240 g/plant and producing 29 S and M sized tubers from 40 tubers.
Mathematical Approach to Heat Transfer and Mass Transfer for Storage of Seed Potato (Solanum tuberosum L.) Para-Para System with boost Airflow Ali Husyain Sakti; Yohanes Setiyo; Sumiyati Sumiyati
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 11 No 2 (2023): September
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JBETA.2023.v11.i02.p24

Abstract

Penelitian ini bertujuan untuk mengkaji perpindahan panas dan perpindahan massa melalui pendekatan matematika pada alat penyimpanan bibit kentang sistem para – para dengan aliran udara paksa. Parameter yang diamati antara lain suhu bahan, suhu udara, dan kelembaban udara. Berdasarkan hasil pengamatan selama 63 hari, kenaikan kelembaban udara di masing – masing rak yang bervariasi antara, 0.306 – 0,636 uap air/kg udara, dengan penurunan kadar air 0,05% – 0,49%. Aliran udara secara paksa mencapai kecepatan, 0,73 m/det – 2,16 m/det. Berdasarkan analisis neraca massa, kelembaban udara relatif, 75,17% – 80,85%. Sedangkan pada neraca energi panas hilang ke lingkungan dengan pendekatan model matematik persamaan empiris QL = Qp - QӨ - QU, membuang panas mencapai, 798,794 watt/det – 275,0968 watt/det dan mampu menyediakan oksigen yang baik, dengan suhu berkisaran antara, 30,49ºC – 30,02ºC. Berdasarkan fenomena panas respirasi hasil perhitungan persamaan matematika, menunjukan tinggi rak mempengarui perpindahan panas yang dialami umbi kentang. Terlihat pada ketinggian rak ke- 3, jika diukur dari dasar rak memiliki tinggi 75cm, menunjukan panas, 529,843 watt dengan perubahan panas relatif berkisar, 19,7 watt/det – (-5,3 watt/det). Sedangkan rak ke- 5, dengan tinggi rak 125cm, menunjukan panas, 523,883 watt dengan perubahan panas relative berkisar, 16,8 watt/det – (-4,8 watt/det) pada rak- 5.
Co-Authors Ali Husyain Sakti I Gusti Ketut Arya Arthawan Ida Ayu Rina Pratiwi Pudja Jarinsen Yanardo Purba M. Ikram Ni Wayan Diana Sepriani Sumiyati Sumiyati