Mechanical behavior of pumpkin fruits subjected to compression during maturation
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidade Federal de Goiás
2013
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| _version_ | 1876423768138579968 |
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| author | Acácio Figueiredo Neto |
| author_facet | Acácio Figueiredo Neto |
| contents | Mechanical behavior of pumpkin fruits subjected to compression during maturation Acácio Figueiredo Neto Francisco de Assis Cardoso Almeida Nelson Cárdenas Olivier Alan Christie Silva Dantas Marcos Antonio Silva Irmão Agrociencias mecânicos mechanical damage módulo de deformidade deformability modulus Rheological properties ABSTRACT During handling operations, many problems that reduce the quality of vegetables may occur. Mechanical injuries are the leading cause of postharvest losses for the pumpkin, and can take place at any point of the production chain. This study aimed at evaluating the pumpkin fruits behavior, during their ripening stages, on the values of maximum compression force for fixed deformations, and determining the proportional deformability modulus of the fruits under compression at the repose position. Fruits were harvested at 15, 30, 40, 50 and 60 days after flowering and uniaxially compressed between two parallel plates. The results allowed to conclude that both the required compression force and the proportional deformability modulus increased during the maturation course, reaching a maximum force of 1,778 N and a maximum deformation modulus of 164 MPa, after 30 days. After this period, both the maximum force and the modulus values decreased, reaching 1,514.8 N of maximum force and a modulus of 132.09 MPa, after 60 days of ripening. Over the course of a longer maturation time, the fruit firmness increased, therefore requiring an increase in the maximum load to achieve greater deformation. The ideal period for harvest and transport of ‘Jacarezinho’ pumpkin fruits was set from 30 to 40 days after anthesis. 2013 artículo científico 1517-6398 https://www.redalyc.org/articulo.oa?id=253028469002 en http://www.redalyc.org/revista.oa?id=2530 Pesquisa Agropecuária Tropical application/pdf Universidade Federal de Goiás Pesquisa Agropecuária Tropical (Brasil) Num.3 Vol.43 |
| format | Artículo científico |
| id | redalyc_253028469002 |
| institution | Redalyc |
| language | en |
| publishDate | 2013 |
| publisher | Universidade Federal de Goiás |
| spellingShingle | Mechanical behavior of pumpkin fruits subjected to compression during maturation Acácio Figueiredo Neto Agrociencias mecânicos mechanical damage módulo de deformidade deformability modulus Rheological properties Mechanical behavior of pumpkin fruits subjected to compression during maturation Acácio Figueiredo Neto Francisco de Assis Cardoso Almeida Nelson Cárdenas Olivier Alan Christie Silva Dantas Marcos Antonio Silva Irmão Agrociencias mecânicos mechanical damage módulo de deformidade deformability modulus Rheological properties ABSTRACT During handling operations, many problems that reduce the quality of vegetables may occur. Mechanical injuries are the leading cause of postharvest losses for the pumpkin, and can take place at any point of the production chain. This study aimed at evaluating the pumpkin fruits behavior, during their ripening stages, on the values of maximum compression force for fixed deformations, and determining the proportional deformability modulus of the fruits under compression at the repose position. Fruits were harvested at 15, 30, 40, 50 and 60 days after flowering and uniaxially compressed between two parallel plates. The results allowed to conclude that both the required compression force and the proportional deformability modulus increased during the maturation course, reaching a maximum force of 1,778 N and a maximum deformation modulus of 164 MPa, after 30 days. After this period, both the maximum force and the modulus values decreased, reaching 1,514.8 N of maximum force and a modulus of 132.09 MPa, after 60 days of ripening. Over the course of a longer maturation time, the fruit firmness increased, therefore requiring an increase in the maximum load to achieve greater deformation. The ideal period for harvest and transport of ‘Jacarezinho’ pumpkin fruits was set from 30 to 40 days after anthesis. 2013 artículo científico 1517-6398 https://www.redalyc.org/articulo.oa?id=253028469002 en http://www.redalyc.org/revista.oa?id=2530 Pesquisa Agropecuária Tropical application/pdf Universidade Federal de Goiás Pesquisa Agropecuária Tropical (Brasil) Num.3 Vol.43 |
| title | Mechanical behavior of pumpkin fruits subjected to compression during maturation |
| topic | Agrociencias mecânicos mechanical damage módulo de deformidade deformability modulus Rheological properties |
| url | https://www.redalyc.org/articulo.oa?id=253028469002 |