Mesoporous Silica and Titania-Based Materials for Stability Enhancement of Polyphenols

To improve phytochemical stability, polyphenolic extracts prepared from <i>Salvia officinalis</i> L., which is a valuable source of phytocompounds with health benefits, were embedded into mesopores of silica, titania, or titania-ceria materials. Ethanolic and hydroalcoholic extracts were...

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Autores principales:	Mioara Prundeanu, Ana-Maria Brezoiu, Mihaela Deaconu, Gratiela Gradisteanu Pircalabioru, Daniel Lincu, Cristian Matei, Daniela Berger
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	common sage polyphenolic extract ultrasound-assisted extraction encapsulation mesoporous titania nanoparticles titania-ceria composite Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/5a8f7b44ae0b4559bedefd7fb405cdea
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spelling	oai:doaj.org-article:5a8f7b44ae0b4559bedefd7fb405cdea2021-11-11T18:01:59ZMesoporous Silica and Titania-Based Materials for Stability Enhancement of Polyphenols10.3390/ma142164571996-1944https://doaj.org/article/5a8f7b44ae0b4559bedefd7fb405cdea2021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6457https://doaj.org/toc/1996-1944To improve phytochemical stability, polyphenolic extracts prepared from <i>Salvia officinalis</i> L., which is a valuable source of phytocompounds with health benefits, were embedded into mesopores of silica, titania, or titania-ceria materials. Ethanolic and hydroalcoholic extracts were prepared by conventional, microwave- or ultrasound-assisted extraction. The influence of the extraction conditions on chemical profile, radical scavenger activity (RSA), and antimicrobial potential of the extracts was assessed. The extracts were characterized by spectrophotometric determination of total polyphenols, flavonoids, chlorophyll pigment contents, as well as RSA. A reverse phase HPLC- PDA analysis was performed for the identification and quantification of extract polyphenols. The extract-loaded materials exhibited an enhanced RSA compared to the free extract after several months of storage, resulting in better polyphenol stability over time following embedding into a mesoporous matrix. Selected extracts free and embedded into mesoporous support were tested against <i>Pseudomonas aeruginosa</i> ATCC 27853, <i>Escherichia coli</i> ATCC 25922, and <i>Staphylococcus aureus</i> ATCC 25923; the best antimicrobial activity was obtained for <i>S. aureus</i>. A slight improvement in antimicrobial activity was observed for the ethanolic extract prepared by ultrasound-assisted extraction following embedding into the TiO<sub>2</sub> matrix compared to MCM-41 silica due to the support contribution.Mioara PrundeanuAna-Maria BrezoiuMihaela DeaconuGratiela Gradisteanu PircalabioruDaniel LincuCristian MateiDaniela BergerMDPI AGarticlecommon sagepolyphenolic extractultrasound-assisted extractionencapsulationmesoporous titania nanoparticlestitania-ceria compositeTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6457, p 6457 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	common sage polyphenolic extract ultrasound-assisted extraction encapsulation mesoporous titania nanoparticles titania-ceria composite Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	common sage polyphenolic extract ultrasound-assisted extraction encapsulation mesoporous titania nanoparticles titania-ceria composite Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Mioara Prundeanu Ana-Maria Brezoiu Mihaela Deaconu Gratiela Gradisteanu Pircalabioru Daniel Lincu Cristian Matei Daniela Berger Mesoporous Silica and Titania-Based Materials for Stability Enhancement of Polyphenols
description	To improve phytochemical stability, polyphenolic extracts prepared from <i>Salvia officinalis</i> L., which is a valuable source of phytocompounds with health benefits, were embedded into mesopores of silica, titania, or titania-ceria materials. Ethanolic and hydroalcoholic extracts were prepared by conventional, microwave- or ultrasound-assisted extraction. The influence of the extraction conditions on chemical profile, radical scavenger activity (RSA), and antimicrobial potential of the extracts was assessed. The extracts were characterized by spectrophotometric determination of total polyphenols, flavonoids, chlorophyll pigment contents, as well as RSA. A reverse phase HPLC- PDA analysis was performed for the identification and quantification of extract polyphenols. The extract-loaded materials exhibited an enhanced RSA compared to the free extract after several months of storage, resulting in better polyphenol stability over time following embedding into a mesoporous matrix. Selected extracts free and embedded into mesoporous support were tested against <i>Pseudomonas aeruginosa</i> ATCC 27853, <i>Escherichia coli</i> ATCC 25922, and <i>Staphylococcus aureus</i> ATCC 25923; the best antimicrobial activity was obtained for <i>S. aureus</i>. A slight improvement in antimicrobial activity was observed for the ethanolic extract prepared by ultrasound-assisted extraction following embedding into the TiO<sub>2</sub> matrix compared to MCM-41 silica due to the support contribution.
format	article
author	Mioara Prundeanu Ana-Maria Brezoiu Mihaela Deaconu Gratiela Gradisteanu Pircalabioru Daniel Lincu Cristian Matei Daniela Berger
author_facet	Mioara Prundeanu Ana-Maria Brezoiu Mihaela Deaconu Gratiela Gradisteanu Pircalabioru Daniel Lincu Cristian Matei Daniela Berger
author_sort	Mioara Prundeanu
title	Mesoporous Silica and Titania-Based Materials for Stability Enhancement of Polyphenols
title_short	Mesoporous Silica and Titania-Based Materials for Stability Enhancement of Polyphenols
title_full	Mesoporous Silica and Titania-Based Materials for Stability Enhancement of Polyphenols
title_fullStr	Mesoporous Silica and Titania-Based Materials for Stability Enhancement of Polyphenols
title_full_unstemmed	Mesoporous Silica and Titania-Based Materials for Stability Enhancement of Polyphenols
title_sort	mesoporous silica and titania-based materials for stability enhancement of polyphenols
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/5a8f7b44ae0b4559bedefd7fb405cdea
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Mesoporous Silica and Titania-Based Materials for Stability Enhancement of Polyphenols

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