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| saberi moghadam, Mojtaba; Hassan-Beygi, Seyed reza; Aboonajmi, Mohammad. |
| Knowing the physical and mechanical properties is very important for automating the activities associated with the date pit. The objective of this study was to determine physical and mechanical properties of date pit of Mazafati cultivar as a function of moisture content. The physical properties of the pits were determined in the moisture content range of 7% to 40% (wb). The date pits was compressed along the width at 0.08, 0.46, 0.55 and 0.64 (db) moisture contents to determine required force, deformation, and energy per volume (toughness) at rupture point. The results showed that the greatest length, width, thickness were 24.43, 9.21, 7.15 mm, respectively at moisture content of 40 % (wb). With increase moisture from 7% to 40% (wb) the true density of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Date; Pit; Moisture content; Mazafati cultivar; Physical properties; Mechanical properties. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3201 |
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| Jahangiri, Mehdi; Hassan-Beygi, Seyed Reza; Aboonajmi, Mohammad; Lotfi, Mahmoud. |
| In this research, the effects of storage duration and storage conditions on mechanical properties of cucumber fruit (Viola variety) were evaluated at different positions of the fruit length. The cucumber fruit mechanical properties determined in this study were firmness, apparent modulus of elasticity, failure stress, failure strain and failure energy. The mechanical properties determined under compression loading using puncture and uni-axial compression tests. The results showed that the storage duration, storage conditions and fruit test position had significant (P<0.01) effect on the mechanical properties of Viola cucumber fruit. The samples firmness, modulus of elasticity, failure stress and failure energy reduced about 49%, 39%, 38% and 33%,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural engineering; Agro-technology cucumber apparent modulus of elasticity storage failure energy firmness stress strain. |
| Ano: 2016 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3615 |
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| Aboonajmi, Mohammad; Ghorbani, Marzieh; Ghorbani Javid, Majid; Arabhosseini, Akbar. |
| The main objective of this study was to compare ultrasound assisted extraction with soxhlet extraction method as control in the extraction ascorbic acid of fennel seeds. Treatment conditions were performed using soxhlet method (240 min at 85 °C) and ultrasound treatment (20 kHz, 39, 64 and 96 W/cm2, 40 and 60 °C), for 15, 30 and 45 min. No significant differences were observed for total soluble solids among the samples studied. A similar trend was observed for both the amount of ascorbic acid extract and its ability to DPPH free radical scavenging. The greatest amount of ascorbic acid obtained in 15 minutes sonication (96 W/cm2 at 60 °C), with equivalent of 1.73 mg/ml fennel seeds extraction. There was a significant difference between soxhlet and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ultrasound-assisted extraction; Ascorbic acid; Soxhlet. |
| Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4328 |
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