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Mechanical damage and thermal effect induced by ultrasonic treatment in olive leaf tissue. Impact on polyphenols recovery
The influence of ultrasound treatment (US) on cellular damage of olive leaf tissue was studied. Mechanical damage and thermal effect of US were characterized. The level of tissue damage was defined by the diffusivity disintegration index Z(D) based on the diffusivity of solutes extracted from olive...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8799614/ https://www.ncbi.nlm.nih.gov/pubmed/34972073 http://dx.doi.org/10.1016/j.ultsonch.2021.105895 |
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author | Abi-Khattar, Anna-Maria Boussetta, Nadia Rajha, Hiba N. Abdel-Massih, Roula M. Louka, Nicolas Maroun, Richard G. Vorobiev, Eugene Debs, Espérance |
author_facet | Abi-Khattar, Anna-Maria Boussetta, Nadia Rajha, Hiba N. Abdel-Massih, Roula M. Louka, Nicolas Maroun, Richard G. Vorobiev, Eugene Debs, Espérance |
author_sort | Abi-Khattar, Anna-Maria |
collection | PubMed |
description | The influence of ultrasound treatment (US) on cellular damage of olive leaf tissue was studied. Mechanical damage and thermal effect of US were characterized. The level of tissue damage was defined by the diffusivity disintegration index Z(D) based on the diffusivity of solutes extracted from olive leaves differently treated. The Arrhenius form using the temperature dependences of the thermal treatment time within the temperature interval 20–90 °C was observed for the thermal process. The corresponding activation energy ΔUT was estimated as 57 kJ/mol. The temperature dependences of electrical conductivity were measured for extracts of intact and maximally treated olive leaves. Then the diffusivity disintegration index Z(D) and total phenolic compounds recovery for three studied US powers were calculated (100, 200, and 400 W). The results evidenced that the mechanically stimulated damage in olive leaf tissue can occur even at a low US power of 100 W if treatment time is long enough (t = 3.5 h). The US treatment noticeably accelerated the diffusion process mechanically in addition to its thermal effect. Trials in aqueous solution revealed the dependence of polyphenols extraction on damage level with respect to the US power applied. |
format | Online Article Text |
id | pubmed-8799614 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-87996142022-02-03 Mechanical damage and thermal effect induced by ultrasonic treatment in olive leaf tissue. Impact on polyphenols recovery Abi-Khattar, Anna-Maria Boussetta, Nadia Rajha, Hiba N. Abdel-Massih, Roula M. Louka, Nicolas Maroun, Richard G. Vorobiev, Eugene Debs, Espérance Ultrason Sonochem Short Communication The influence of ultrasound treatment (US) on cellular damage of olive leaf tissue was studied. Mechanical damage and thermal effect of US were characterized. The level of tissue damage was defined by the diffusivity disintegration index Z(D) based on the diffusivity of solutes extracted from olive leaves differently treated. The Arrhenius form using the temperature dependences of the thermal treatment time within the temperature interval 20–90 °C was observed for the thermal process. The corresponding activation energy ΔUT was estimated as 57 kJ/mol. The temperature dependences of electrical conductivity were measured for extracts of intact and maximally treated olive leaves. Then the diffusivity disintegration index Z(D) and total phenolic compounds recovery for three studied US powers were calculated (100, 200, and 400 W). The results evidenced that the mechanically stimulated damage in olive leaf tissue can occur even at a low US power of 100 W if treatment time is long enough (t = 3.5 h). The US treatment noticeably accelerated the diffusion process mechanically in addition to its thermal effect. Trials in aqueous solution revealed the dependence of polyphenols extraction on damage level with respect to the US power applied. Elsevier 2021-12-27 /pmc/articles/PMC8799614/ /pubmed/34972073 http://dx.doi.org/10.1016/j.ultsonch.2021.105895 Text en © 2021 The Authors https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Short Communication Abi-Khattar, Anna-Maria Boussetta, Nadia Rajha, Hiba N. Abdel-Massih, Roula M. Louka, Nicolas Maroun, Richard G. Vorobiev, Eugene Debs, Espérance Mechanical damage and thermal effect induced by ultrasonic treatment in olive leaf tissue. Impact on polyphenols recovery |
title | Mechanical damage and thermal effect induced by ultrasonic treatment in olive leaf tissue. Impact on polyphenols recovery |
title_full | Mechanical damage and thermal effect induced by ultrasonic treatment in olive leaf tissue. Impact on polyphenols recovery |
title_fullStr | Mechanical damage and thermal effect induced by ultrasonic treatment in olive leaf tissue. Impact on polyphenols recovery |
title_full_unstemmed | Mechanical damage and thermal effect induced by ultrasonic treatment in olive leaf tissue. Impact on polyphenols recovery |
title_short | Mechanical damage and thermal effect induced by ultrasonic treatment in olive leaf tissue. Impact on polyphenols recovery |
title_sort | mechanical damage and thermal effect induced by ultrasonic treatment in olive leaf tissue. impact on polyphenols recovery |
topic | Short Communication |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8799614/ https://www.ncbi.nlm.nih.gov/pubmed/34972073 http://dx.doi.org/10.1016/j.ultsonch.2021.105895 |
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