Analysis of astringency distribution in 'Rojo Brillante' persimmon using hyperspectral imaging
The astringency removal with high CO2 concentration is the most widely used postharvest treatment prior to commercialise astringent persimmon cultivars. In this process the anaerobic respiration promoted gives rise to an accumulation of acetaldehyde which reacts with the soluble tannins (ST), respon...
| Autores principales: | , , , , , , |
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| Formato: | conferenceObject |
| Lenguaje: | Inglés |
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ISHS
2021
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.11939/6986 https://www.actahort.org/books/1195/1195_36.htm |
| _version_ | 1855032525927219200 |
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| author | Munera, Sandra Besada, Cristina Blasco, José Cubero, Sergio Gil, Rebeca Aleixos, Nuria Salvador, Alejandra |
| author2 | Badenes, María L. |
| author_browse | Aleixos, Nuria Badenes, María L. Besada, Cristina Blasco, José Cubero, Sergio Gil, Rebeca Munera, Sandra Salvador, Alejandra |
| author_facet | Badenes, María L. Munera, Sandra Besada, Cristina Blasco, José Cubero, Sergio Gil, Rebeca Aleixos, Nuria Salvador, Alejandra |
| author_sort | Munera, Sandra |
| collection | ReDivia |
| description | The astringency removal with high CO2 concentration is the most widely used postharvest treatment prior to commercialise astringent persimmon cultivars. In this process the anaerobic respiration promoted gives rise to an accumulation of acetaldehyde which reacts with the soluble tannins (ST), responsible of astringency. The objective of this work was to evaluate if the process of tannin insolubilization occurring during deastringency treatment is uniform around the fruit flesh. To this end lots of ten homogeneous 'Rojo Brillante' fruits were exposed to CO2 treatments in closed containers (95% CO2 at 20°C and 90% RH) for: 0, 6, 12, 18 and 24 h. After each treatment, individual fruits were cut into halves and pressed against 10×10 cm filter paper soaked on a 5% FeCl3 solution, obtaining a blue print whose quantity and intensity is related with the ST content and its distribution. In addition, hyperspectral images of the intact fruits were previously acquired in order to predict the content and distribution of ST in the flesh in each case. The following parameters were also individually evaluated: external colour, ST content and sensory evaluation of astringency. A predictive model based on PLS was designed and applied to fruit submitted to deastringency treatments allowing creating maps of the distribution of the ST in the fruit. The classification model designed based on Partial Least Squares (PLS) was capable to differentiate those fruit in which the effectiveness of the treatment was complete (non-astringent fruit) from those in which remained ST that resulted on sensory detectable astringency. Under the study, the ST that remained after CO2-treatments were distributed irregularly inside the flesh, being their insolubilization faster in the stem-end area than in the stylar one. |
| format | conferenceObject |
| id | ReDivia6986 |
| institution | Instituto Valenciano de Investigaciones Agrarias (IVIA) |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | ISHS |
| publisherStr | ISHS |
| record_format | dspace |
| spelling | ReDivia69862025-04-25T14:52:14Z Analysis of astringency distribution in 'Rojo Brillante' persimmon using hyperspectral imaging Munera, Sandra Besada, Cristina Blasco, José Cubero, Sergio Gil, Rebeca Aleixos, Nuria Salvador, Alejandra Badenes, María L. astringency Soluble tannins Hyperspectral imaging N01 Agricultural engineering J10 Handling, transport, storage and protection of agricultural products Distribution Computer vision The astringency removal with high CO2 concentration is the most widely used postharvest treatment prior to commercialise astringent persimmon cultivars. In this process the anaerobic respiration promoted gives rise to an accumulation of acetaldehyde which reacts with the soluble tannins (ST), responsible of astringency. The objective of this work was to evaluate if the process of tannin insolubilization occurring during deastringency treatment is uniform around the fruit flesh. To this end lots of ten homogeneous 'Rojo Brillante' fruits were exposed to CO2 treatments in closed containers (95% CO2 at 20°C and 90% RH) for: 0, 6, 12, 18 and 24 h. After each treatment, individual fruits were cut into halves and pressed against 10×10 cm filter paper soaked on a 5% FeCl3 solution, obtaining a blue print whose quantity and intensity is related with the ST content and its distribution. In addition, hyperspectral images of the intact fruits were previously acquired in order to predict the content and distribution of ST in the flesh in each case. The following parameters were also individually evaluated: external colour, ST content and sensory evaluation of astringency. A predictive model based on PLS was designed and applied to fruit submitted to deastringency treatments allowing creating maps of the distribution of the ST in the fruit. The classification model designed based on Partial Least Squares (PLS) was capable to differentiate those fruit in which the effectiveness of the treatment was complete (non-astringent fruit) from those in which remained ST that resulted on sensory detectable astringency. Under the study, the ST that remained after CO2-treatments were distributed irregularly inside the flesh, being their insolubilization faster in the stem-end area than in the stylar one. 2021-01-19T09:08:07Z 2021-01-19T09:08:07Z 2018 conferenceObject Munera, S., Besada, C., Blasco, J., Cubero, S., Gil, R., Aleixos, N. et al. (2018). Analysis of astringency distribution in 'Rojo Brillante' persimmon using hyperspectral imaging. Acta Horticulturae, 1195, 233-238. 0567-7572 (print) 2406-6168 (electronic) http://hdl.handle.net/20.500.11939/6986 10.17660/ActaHortic.2018.1195.36 https://www.actahort.org/books/1195/1195_36.htm en 2016-10-16 VI International Symposium on Persimmon Valencia, España Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ closedAccess ISHS electronico |
| spellingShingle | astringency Soluble tannins Hyperspectral imaging N01 Agricultural engineering J10 Handling, transport, storage and protection of agricultural products Distribution Computer vision Munera, Sandra Besada, Cristina Blasco, José Cubero, Sergio Gil, Rebeca Aleixos, Nuria Salvador, Alejandra Analysis of astringency distribution in 'Rojo Brillante' persimmon using hyperspectral imaging |
| title | Analysis of astringency distribution in 'Rojo Brillante' persimmon using hyperspectral imaging |
| title_full | Analysis of astringency distribution in 'Rojo Brillante' persimmon using hyperspectral imaging |
| title_fullStr | Analysis of astringency distribution in 'Rojo Brillante' persimmon using hyperspectral imaging |
| title_full_unstemmed | Analysis of astringency distribution in 'Rojo Brillante' persimmon using hyperspectral imaging |
| title_short | Analysis of astringency distribution in 'Rojo Brillante' persimmon using hyperspectral imaging |
| title_sort | analysis of astringency distribution in rojo brillante persimmon using hyperspectral imaging |
| topic | astringency Soluble tannins Hyperspectral imaging N01 Agricultural engineering J10 Handling, transport, storage and protection of agricultural products Distribution Computer vision |
| url | http://hdl.handle.net/20.500.11939/6986 https://www.actahort.org/books/1195/1195_36.htm |
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