Template-Type: ReDIF-Article 1.0 Author-Name: Eddy Plasquy Author-Workplace-Name: Departamento de Bioquímica y Biología Molecular de Productos Vegetales (CSIC), Instituto de la Grasa, Sevilla, Spain Author-Name: Rafael R. Sola-Guiraldo Author-Workplace-Name: Departamento de Ingeniería Rural, Grupo de Investigación Mecanización y Tecnología Rural, Universidad de Córdoba, Córdoba, Spain Author-Name: María del Carmen Florido Author-Workplace-Name: Departamento de Cristalograf ía, Mineralogía y Química Agrícola, E.T.S.I.A. Universidad de Sevilla, Sevilla, Spain *Corresponding autor: jmgarcia@cica.es Author-Name: José M. García Author-Workplace-Name: Departamento de Bioquímica y Biología Molecular de Productos Vegetales (CSIC), Instituto de la Grasa, Sevilla, Spain Author-Name: Gregorio Blanco-Roldán Author-Workplace-Name: Departamento de Ingeniería Rural, Grupo de Investigación Mecanización y Tecnología Rural, Universidad de Córdoba, Córdoba, Spain Title: Evaluation of a manual olive fruit harvester for small producers Abstract: Harvest facilities limit the possibilities of small producers to produce a high-quality olive fruit. This paper discusses the efficiency of a newly designed manual picking device as a possible solution to these specific challenges as confronted in most regions of the Mediterranean basis. The efficiency and cost of the picking method were compared to traditional olive picking using nets, taking a different number of operators and branch shakers into account. Keywords: branch-shaker, harvest efficiency, inverted umbrella, Olea europaea, family orchard Journal: Research in Agricultural Engineering Pages: 105-111 Volume: 65 Issue: 4 Year: 2019 DOI: 10.17221/18/2019-RAE File-URL: http://rae.agriculturejournals.cz/doi/10.17221/18/2019-RAE.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/rae-201904-0001.txt Handle: RePEc:caa:jnlrae:v:65:y:2019:i:4:id:18-2019-RAE Template-Type: ReDIF-Article 1.0 Author-Name: Mehdi Khodaei Author-Workplace-Name: Department of Biosystems Engineering, Faculty of Agriculture, University of Tabriz, Tabriz, Iran Author-Name: Sadegh Seiiedlou Author-Workplace-Name: Department of Biosystems Engineering, Faculty of Agriculture, University of Tabriz, Tabriz, Iran Author-Name: Morteza Sadeghi Author-Workplace-Name: Department of Mechanical Engineering, Faculty of Agriculture, University of Tabriz, Tabriz, Iran Title: The evaluation of vibration damage in fresh apricots during simulated transport Abstract: The transportation of fruits over longer distances could lead to damage fruits such as apricots. The present study was conducted to evaluate the effect of transportation factors including the vibration frequencies (17 and 20 Hz), the vibration time (15 and 30 minutes), the fruit cultivar (Shahroudi and Urdoobad), and the package type (2 types) on the apricot damage. An electro-dynamic lab vibration simulator was used to simulate the road transportation and a fruit damage index (FDI) was used as a criterion to evaluate the damage based on the classifying bruises into five different categories. The statistical analysis indicated that, except for the package type, the other factors (apricot cultivar, frequency, and vibration duration) had a significant effect on the FDI (P < 0.01). The vibration damages considerably changed by the apricot cultivar and increased by the frequency and duration. The results indicated that the Urdoobad cultivar was more resistant to the damage and could be used for export purposes to transport in distances more than 1,000 km. The maximum damages occurred at a frequency and duration of 17 Hz and 30 min in the Shahroudi cultivar, respectively. Keywords: transportation, bruising, fruit damage index, package design, packaging transmissibility Journal: Research in Agricultural Engineering Pages: 112-122 Volume: 65 Issue: 4 Year: 2019 DOI: 10.17221/12/2019-RAE File-URL: http://rae.agriculturejournals.cz/doi/10.17221/12/2019-RAE.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/rae-201904-0002.txt Handle: RePEc:caa:jnlrae:v:65:y:2019:i:4:id:12-2019-RAE Template-Type: ReDIF-Article 1.0 Author-Name: Mojtaba Afsharipour Author-Workplace-Name: Department of Biosystem Engineering, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran Author-Name: Kazem Jafari-Naeimi Author-Workplace-Name: Department of Biosystem Engineering, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran Author-Name: Hadi Samimi-Akhijahani Author-Workplace-Name: Department of Biosystems Engineering, Faculty of Agriculture, University of Kurdistan, Sanandaj, Iran *Corresponding Author: h.samimi@uok.ac.ir Title: Laser diffraction analysis of purified Descurainia Sophia seeds by a tribo-aero-electrostatic system Abstract: In order to separate the impurities in vegetable seeds, a tribo-aero-electrostatic separator was designed and manufactured. The data analysis of the pure Descurainia Sophia seed shows that the interaction of the voltage, distance and angle was significant on the weight of the D. Sophia at the level of 1%. To determine and compare the size of the separated seeds, a laser diffraction device with the possibility of analysing the size distribution of the particles was used. The results showed that the best purity (99.5%) with the highest percentage of the relative frequency of the D. Sophia seeds size was obtained for box 1 (the first box) with a seed size of 680 μm. By moving from box 1 towards box 4, the amount of the impurities due to the variation of the electrical properties of the materials increases, although the value of the impurities for the samples is acceptable. Keywords: cumulative curves, grain seed sorter, high voltage system, purification Journal: Research in Agricultural Engineering Pages: 123-130 Volume: 65 Issue: 4 Year: 2019 DOI: 10.17221/48/2018-RAE File-URL: http://rae.agriculturejournals.cz/doi/10.17221/48/2018-RAE.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/rae-201904-0003.txt Handle: RePEc:caa:jnlrae:v:65:y:2019:i:4:id:48-2018-RAE Template-Type: ReDIF-Article 1.0 Author-Name: Olumide Falana Author-Workplace-Name: Department of Agricultural and Environmental Engineering, Faculty of Technology, Obafemi Awolowo University, Ile-Ife, Nigeria Author-Name: Olabanjo Aluko Author-Workplace-Name: Department of Agricultural and Environmental Engineering, Faculty of Technology, Obafemi Awolowo University, Ile-Ife, Nigeria Author-Name: Dare Adetan Author-Workplace-Name: Department of Mechanical Engineering, Faculty of Technology, Obafemi Awolowo University, Ile-Ife, Nigeria Author-Name: Jimmy Osunbitan Author-Workplace-Name: Department of Agricultural and Environmental Engineering, Faculty of Technology, Obafemi Awolowo University, Ile-Ife, Nigeria Title: The physical properties and strength characteristics of kenaf plants Abstract: This article reports some physical properties and strength characteristics of two kenaf (Hibiscus cannabinus) varieties in Nigeria at critical stages of harvest with a view of understanding the plant material reaction to the load and deformation. The kenaf samples were subjected to a uniaxial compression test between two parallel plates at a loading rate of 20 mm.min-1 and a uniaxial bending test between two supports on each end at a loading rate of 50 mm.min-1 using a Universal Instron Testing Machine (Instron, USA). The results of the parameters studied revealed that Tianung 1 gave the higher stem height, stem diameter, compressive stress, bending stress, rupture load, rupture energy, Young's modulus, and toughness, which were 293.10 cm, 18.45 mm, 8.70 MPa, 44.86 MPa, 191.51 N, 3.43 J.mm-2, 350.81 MPa, and 6.85 N.mm-1, respectively, at four months after planting. The parameters studied significantly increased with maturity for the two kenaf varieties. However, the moisture content significantly reduced with maturity. Keywords: yield strength, bending stress, rupture load, rupture energy, Young's modulus Journal: Research in Agricultural Engineering Pages: 131-136 Volume: 65 Issue: 4 Year: 2019 DOI: 10.17221/34/2019-RAE File-URL: http://rae.agriculturejournals.cz/doi/10.17221/34/2019-RAE.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/rae-201904-0004.txt Handle: RePEc:caa:jnlrae:v:65:y:2019:i:4:id:34-2019-RAE Template-Type: ReDIF-Article 1.0 Author-Name: Annisa Kusumaningrum Author-Name: Dwi Joko Prasetyo Author-Workplace-Name: Research Unit for Natural Product Technology, Indonesian Institute of Sciences, Yogyakarta, Indonesia Author-Name: Ervika Rahayu Novita Herawati Author-Workplace-Name: Research Unit for Natural Product Technology, Indonesian Institute of Sciences, Yogyakarta, Indonesia Author-Name: Asep Nurhikmat Author-Workplace-Name: Research Unit for Natural Product Technology, Indonesian Institute of Sciences, Yogyakarta, Indonesia Title: Modelling the drying characteristics of the traditional Indonesian crackers "kerupuk" Abstract: An oven drying method was used to dry traditional Indonesian crackers, popularly known as kerupuk, applying drying temperatures of 50, 60 and 70°C and three different flavours, i.e., garlic, chili and seaweed. Newton, Page, Two terms, Midilli, Logarithmic and Henderson & Pabis mathematical models were used to fit the best model while the standard error of estimate (SSE), root mean square error (RMSE) and coefficient of correlation (r) were chosen as the criteria to determine the equation of the best fit drying model. The Midilli model was the best fit for all the kerupuk flavours. The effective moisture diffusivity was in the range of 1.0413 × 10-10-1.6363 × 10-10 m2.s-1 for the garlic flavour, 1.0007 × 10-10-1.5619 × 10-10 m2.s-1 for the chili flavour and from 1.0000 × 10-10 to 1.6228 × 10-10 m2.s-1 for the seaweed flavour. The activation energy of the garlic flavour, chili flavour and seaweed flavour kerupuk are 20.64, 20.64 and 22.57 kJ.mol-1, respectively. Furthermore, in the present study, the physical properties, i.e., the colour and hardness of the kerupuk crackers after the drying process was investigated. Keywords: snack, temperature, Midilli, home industry, colour, hardness Journal: Research in Agricultural Engineering Pages: 137-144 Volume: 65 Issue: 4 Year: 2019 DOI: 10.17221/27/2019-RAE File-URL: http://rae.agriculturejournals.cz/doi/10.17221/27/2019-RAE.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/rae-201904-0005.txt Handle: RePEc:caa:jnlrae:v:65:y:2019:i:4:id:27-2019-RAE