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Jurnal Agritechno
Published by Universitas Hasanuddin
ISSN : 19797362     EISSN : 26562413     DOI : -
Core Subject : Agriculture, Social, Engineering,
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Engineering Environmental Science
Jurnal AgriTechno merupakan publikasi yang diterbitkan oleh Depertemen Teknologi Pertanian Universitas Hasanuddin. Edisi Perdana terbit dalam bentuk cetakan pada Bulan April 2008. Jurnal ini ditujukan sebagai wahana publikasi hasil-hasil penelitian dasar dan aplikatif yang bermutu dan orisinil. Jurnal ini memuat artikel ilmiah dalam bidang teknik tanah dan air, teknik pasca panen, bangunan dan lingkungan pertanian, aplikasi elektronika dan sistim kendali, peralatan dan mesin budidaya, energi alternatif dan elektrifikasi, teknik pengolahan pangan dan hasil pertanian, keamanan dan mikrobiologi pangan, bioteknologi, dan kimia pangan. Setiap artikel yang dimuat diharapkan dapat memberi kontribusi dalam pengembangan ilmu dan meningkatkan pengetahuan tentang bidang ilmu dan teknologi yang terkait.
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Articles 7 Documents
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Search results for , issue "Jurnal Agritechno, Vol. 14, Number 1, April 2021" : 7 Documents clear
Kajian Sifat Enjiniring Puree Wortel (Daucus carrota L.) Nanda Ikhtiar Muti; Dian Purbasari
Jurnal Agritechno Jurnal Agritechno, Vol. 14, Number 1, April 2021
Publisher : Depertemen Teknologi Pertanian Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/at.v14i1.364

Abstract

The Post-harvest processing of carrots in Indonesia is still limited to being processed into the main ingredients of soup or vegetable of cap cay and sometimes blended to drink as juice and currently, there are still trying to make flour from carrots. This study uses a Complete Randomized Design (RAL) with two factors, namely the comparison of carrots and water and the length of grinding time. The measurement stages of technical properties begin from the preparation of raw materials, washing, cutting, purification, then measured of technical properties. The technical properties measured are viscosity, total solids, density, color, and thermal conductivity. The comparison of carrots and water used are 3:1 (450 gr:150 ml), 2:1 (400 gr:200 ml), and 1:2 (200 gr:400 ml) for a long time period of 150 seconds, 210 seconds, and 270 seconds. The Data analysis using two-way ANOVA statistical test with two factors that affect the comparison of carrots and water and length of life. Viscosity values range from 1697.78 cP to 4661.44 cP. The total value of solids ranges from 3.11% to 7.20%. Density values range from 1,004 g/ml to 1,015 g/ml. The L color index value ranges from 34.33 to 42.77. Color index values range from -1.06 to 6.44. The color index value b ranges from 12.65 to 26.95. Thermal conductivity values range from 0.577 W/m.K to 0.682 W/m.K. The more proportions of carrots in a puree solution, the higher of viscosity value, total solids, density, and color indexes L, a, and b. While the value of thermal conductivity does not affect the comparison of carrots and water. At purification, time treatment does not affect solid total values, color index values L, a, and b. However, it affects the density and viscosity value of carrot puree. The longer the milling time, the greater the viscosity value and density.
Pengaruh Ketebalan dan Frekuensi Pembalikan dalam Penjemuran Rumput Laut Gracilaria sp sitti aisah; Mursalim Mursalim; Samsuar Samsuar
Jurnal Agritechno Jurnal Agritechno, Vol. 14, Number 1, April 2021
Publisher : Depertemen Teknologi Pertanian Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/at.v14i1.389

Abstract

Marketing of seaweed is still in the form of dried seaweed, but in fact the quality of the dried seaweedthat is sold by farmers has not met the standards required by the seaweed processing industry. One ofthe efforts that can be made to improve the quality of dried seaweed is by optimizing drying, namelyby adjusting the thickness and reversal frequency. Pile thickness of will determine the length of timedrying is carried out, while the frequency of reversal will determine the spread of heat that occurs inthe seaweed pile. The aim of this study was to determine the drying speed in seaweed Gracilaria spdrying and quality of dried sweaweed. The study was conducted with two treatments, namely pilethickness of 12, 16 and 20 cm and treatment of reversal frequency with an interval of 3 hours, 4 hoursand 5 hours. The parameters observed in this study were a decrease in water content, drying rate, andsensory test. The results showed that the drying of Gracilaria sp seaweed with a thicknessof 12 cm with a reversal frequency of each 3-4 hours is the best treatment in terms of color / brightnessand good texture with a drying rate of 0.462 kg H2O/kg solids hour.
The Evaluasi Kinerja Model Page Pada Pengeringan Lapisan Tipis Umbi Iles-Iles Mukmin Mukmin; Junaedi Muhidong; Abdul Azis
Jurnal Agritechno Jurnal Agritechno, Vol. 14, Number 1, April 2021
Publisher : Depertemen Teknologi Pertanian Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/at.v14i1.399

Abstract

The iles-iles is an umber plant having a high economic potential. This plant can only grow in tropical and subtropical areas. This study aims to evaluating the accuracy of the page model in estimating the moisture ratio of the iles-iles in the form of slice during the thin layer drying process. This research uses 450C and 550C drying temperature as well as the thickness of iles-iles 1,0 cm and 0,5 cm. Drying air velocity was used at 1,0 m/s. The observation parameters used on this study were the weight of the sample and the drying time. Results of this study are the water-level drop pattern, moisture ratio drop pattern, the value of page model drying, and page model evaluations. Those results describe that the relation between the predictive value and the observation value of moisture ratio create regression equations without the intersept with R2 approaching value. Consequently, the acquired page model is preferred to give partial predictions of iles-iles. Meanwhile the R2 value is 0.998, the chi-squared, value is 5.202x102, and the RMSE value is. The concise of R2, Chi-Squared, and RMSE with the previous research had relatively small value that indicated that a page model drying performance on the study was also quite good
Karakteristik Thermal Shortening Minyak Biji Karet, Minyak Ikan, dan Stearin Sawit Menggunakan Differential Scanning Calorimetry (DSC) Sumartini Sumartini; Nirmala Efri Hasibuan; Sellen Gurusmatika
Jurnal Agritechno Jurnal Agritechno, Vol. 14, Number 1, April 2021
Publisher : Depertemen Teknologi Pertanian Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/at.v14i1.400

Abstract

The purpose of this research is often faced in making spreads products such as shortening is the difficulty of producing products with the expected melting point. Chemical interesterification is considered cheaper, simpler, easier to control, the temperature used is not too high, thereby reducing the possibility of trans fatty acids forming. The purpose of this study was to determine the characteristics of the thermal profile and melting point of shortening through two different lipid modifications, blending (NIE) and chemical interesterification (CIE). The research method used was a completely randomized design (CRD) with 10 treatment ratios to determine the melting characteristics of shortening using DSC (Differential Scanning Calorimetry). The results showed that the melting point value was in the melting temperature range (40-49 ° C). Based on the Thermal Characteristics the ratio 90/5/5 (CIE 4) and 80/10/10 (CIE 3) have 3 and 4 low melting point peaks. Based on these data it can be concluded that the melting point and thermal profile of chemical interesterification are lower than blending, this proves that chemical intereterification is able to create new shortening fats with certain plasticity and provide melting characteristics according to commercial shortening.
Perhitungan Laju Infiltrasi pada Kebun Percontohan Fakultas Teknologi Pertanian Universitas Papua Bertha Ollin Paga'; Reniana Reniana
Jurnal Agritechno Jurnal Agritechno, Vol. 14, Number 1, April 2021
Publisher : Depertemen Teknologi Pertanian Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/at.v14i1.409

Abstract

Water conditions for agricultural crops are very fluctuating as seen by the season, the location of water sources, and air conservation efforts. The provision of water for agricultural land can be endeavored by providing irrigation, in which the provision of irrigation water to the land must know the infiltration rate so that no run-off occurs. Infiltration is an important part in the hydrological cycle as well as in the process of diversifying rain into streams in rivers. Measurement of the infiltration rate is carried out by many methods, one of which is the direct measurement method, namely using the Double Ring Infiltrometer and the Horton method. The purpose of this study was to determine the infiltration rate that occurred in the Fateta Unipa demonstration plot. The method to be used is a descriptive analysis method with a quantitative approach. Measurement of the infiltration rate in the field was carried out at 1 (one) point with 3 (three) replications. Data processing is carried out by using 2 (two) processing techniques, namely the method of processing data directly from field measurements and data processing using the Horton Model. After that, a comparison is made between the direct measurement results and the measurement results using the Horton model. Based on the results of data processing, it was found that the infiltration rate at the study site, both with infiltration and horton models, was respectively 39.7 mm / minute and 21.7 mm / minute. The infiltration rates of the two methods were not significantly different.
Pemodelan Matematika Karakteristik Pengeringan Lada Putih Pada Pengering Spouted Bed Dengan Perlakuan Preheating Gelombang Mikro Andi Muhammad Akram Mukhlis; Nurul Fadhilah
Jurnal Agritechno Jurnal Agritechno, Vol. 14, Number 1, April 2021
Publisher : Depertemen Teknologi Pertanian Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/at.v14i1.412

Abstract

To study the effect of drying on white pepper seeds, a thorough knowledge of the drying kinetics is required. The drying kinetics of a material can be explained using a mathematical model which is usually used to estimate the drying time of the material. This study aims to determine the appropriate drying mathematical model for drying white pepper spouted beds with microwave preheating treatment. The equipment used in this study was a spouted bed dryer designed for laboratory scale. The material used in this study was wet white pepper seeds obtained from smallholder plantations in Enrekang district, South Sulawesi province with an age of approximately 8-9 months after flowering. The white pepper was directly put into the spouted bed drying room for non-preheating treatment, while for the preheating treatment the pepper was stored in a container then put in a microwave oven for 2 minutes. During the drying process, several parameters for drying analysis are measured. There are seven different mathematical drying models evaluated. In determining the most appropriate mathematical model, model validation is required through statistical methods. The statistical methods used were correlation analysis, reduced chi-square (χ2) test, and root means square error (RMSE) analysis. Based on the analysis, the Weibull model fulfills the criteria to be the best model with the correlation coefficient r (0.99990) being the highest and the χ2 (0.00001) and RMSE (0.00385) values ​​being the lowest. Thus, the Weibull model can be used to predict drying time and moisture content.
Pengembangan Alat Tanam Benih Padi Langsung (ATABELA) Metode Vakum Muhammad Tahir Sapsal; Muhammad Fadlian; Salengke Salengke
Jurnal Agritechno Jurnal Agritechno, Vol. 14, Number 1, April 2021
Publisher : Depertemen Teknologi Pertanian Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/at.v14i1.415

Abstract

Direct seed planting tools or commonly abbreviated as ATABELA have been commonly used in rice cultivation in Indonesia. One of the problems that often occur in the use of this tool is the inconsistency in the number of seeds released. Besides, the seeds that are issued are usually more than three seeds, so that it can cause competition in the growth process. Therefore, it is necessary to develop direct seed planting tools with precise seed dosage. This study aims to design an applicator for planting rice seeds directly by dropping the seeds using vacuum pressure. Another goal is to know the pressure that can be generated as well as the forward speed required to produce the desired vacuum pressure. The first step in this research is to identify the pressure needed to move the seeds, then design a tool based on the pressure data. The test is carried out using a DC motor as a substitute for wheel rotation to determine the forward speed required to obtain the required pressure. The moisture content of the seeds used is 22.71% and the required pressure is 97 kPa (4 kPa under standard atmospheric pressure), the required forward speed is 2.5 m / s, so it is necessary to modify the ratio of the wheel pulley to the drive shaft.

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