The Valorisation of Olive Mill Wastewater from Slovenian Istria by Fe<sub>3</sub>O<sub>4</sub> Particles to Recover Polyphenolic Compounds for the Chemical Specialties Sector

Olive oil production using three-phase decanter systems creates olive oil and two by-products: olive mill wastewater (OMWW) and pomace. These by-products contain the highest share of polyphenolic compounds that are known to be associated with beneficial effects on human health. Therefore, they are a...

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Autores principales:	Kelly Peeters, Ana Miklavčič Višnjevec, Esakkiammal Sudha Esakkimuthu, Matthew Schwarzkopf, Črtomir Tavzes
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	polyphenolic compounds olive mill wastewater extraction techniques Fe<sub>3</sub>O<sub>4</sub> particles magnetic collection adsorption and desorption Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/d8a906a114814094a1ccce5c7de997e9
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spelling	oai:doaj.org-article:d8a906a114814094a1ccce5c7de997e92021-11-25T18:28:37ZThe Valorisation of Olive Mill Wastewater from Slovenian Istria by Fe<sub>3</sub>O<sub>4</sub> Particles to Recover Polyphenolic Compounds for the Chemical Specialties Sector10.3390/molecules262269461420-3049https://doaj.org/article/d8a906a114814094a1ccce5c7de997e92021-11-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/22/6946https://doaj.org/toc/1420-3049Olive oil production using three-phase decanter systems creates olive oil and two by-products: olive mill wastewater (OMWW) and pomace. These by-products contain the highest share of polyphenolic compounds that are known to be associated with beneficial effects on human health. Therefore, they are an attractive source of phenolic compounds for further industrial use in the cosmetic, pharmaceutical and food industries. The use of these phenolics is limited due to difficulties in recovery, high reactivity, complexity of the OMWW matrix and different physiochemical properties of phenolic compounds. This research, focused on OMWW, was performed in two phases. First, different polyphenol extraction methods were compared to obtain the method that yields the highest polyphenol concentration. Twenty-five phenolic compounds and their isomers were determined. Acidifying OMWW, followed by five minutes of ultrasonication, resulted in the highest measured polyphenol content of 27 mg/L. Second, the collection of polyphenolic compounds from OMWW via adsorption on unmodified iron (II, III) oxide particles was investigated. Although low yields were obtained for removed polyphenolic compounds in one removal cycle, the process has a high capability to be repeated.Kelly PeetersAna Miklavčič VišnjevecEsakkiammal Sudha EsakkimuthuMatthew SchwarzkopfČrtomir TavzesMDPI AGarticlepolyphenolic compoundsolive mill wastewaterextraction techniquesFe<sub>3</sub>O<sub>4</sub> particlesmagnetic collectionadsorption and desorptionOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6946, p 6946 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	polyphenolic compounds olive mill wastewater extraction techniques Fe<sub>3</sub>O<sub>4</sub> particles magnetic collection adsorption and desorption Organic chemistry QD241-441
spellingShingle	polyphenolic compounds olive mill wastewater extraction techniques Fe<sub>3</sub>O<sub>4</sub> particles magnetic collection adsorption and desorption Organic chemistry QD241-441 Kelly Peeters Ana Miklavčič Višnjevec Esakkiammal Sudha Esakkimuthu Matthew Schwarzkopf Črtomir Tavzes The Valorisation of Olive Mill Wastewater from Slovenian Istria by Fe<sub>3</sub>O<sub>4</sub> Particles to Recover Polyphenolic Compounds for the Chemical Specialties Sector
description	Olive oil production using three-phase decanter systems creates olive oil and two by-products: olive mill wastewater (OMWW) and pomace. These by-products contain the highest share of polyphenolic compounds that are known to be associated with beneficial effects on human health. Therefore, they are an attractive source of phenolic compounds for further industrial use in the cosmetic, pharmaceutical and food industries. The use of these phenolics is limited due to difficulties in recovery, high reactivity, complexity of the OMWW matrix and different physiochemical properties of phenolic compounds. This research, focused on OMWW, was performed in two phases. First, different polyphenol extraction methods were compared to obtain the method that yields the highest polyphenol concentration. Twenty-five phenolic compounds and their isomers were determined. Acidifying OMWW, followed by five minutes of ultrasonication, resulted in the highest measured polyphenol content of 27 mg/L. Second, the collection of polyphenolic compounds from OMWW via adsorption on unmodified iron (II, III) oxide particles was investigated. Although low yields were obtained for removed polyphenolic compounds in one removal cycle, the process has a high capability to be repeated.
format	article
author	Kelly Peeters Ana Miklavčič Višnjevec Esakkiammal Sudha Esakkimuthu Matthew Schwarzkopf Črtomir Tavzes
author_facet	Kelly Peeters Ana Miklavčič Višnjevec Esakkiammal Sudha Esakkimuthu Matthew Schwarzkopf Črtomir Tavzes
author_sort	Kelly Peeters
title	The Valorisation of Olive Mill Wastewater from Slovenian Istria by Fe<sub>3</sub>O<sub>4</sub> Particles to Recover Polyphenolic Compounds for the Chemical Specialties Sector
title_short	The Valorisation of Olive Mill Wastewater from Slovenian Istria by Fe<sub>3</sub>O<sub>4</sub> Particles to Recover Polyphenolic Compounds for the Chemical Specialties Sector
title_full	The Valorisation of Olive Mill Wastewater from Slovenian Istria by Fe<sub>3</sub>O<sub>4</sub> Particles to Recover Polyphenolic Compounds for the Chemical Specialties Sector
title_fullStr	The Valorisation of Olive Mill Wastewater from Slovenian Istria by Fe<sub>3</sub>O<sub>4</sub> Particles to Recover Polyphenolic Compounds for the Chemical Specialties Sector
title_full_unstemmed	The Valorisation of Olive Mill Wastewater from Slovenian Istria by Fe<sub>3</sub>O<sub>4</sub> Particles to Recover Polyphenolic Compounds for the Chemical Specialties Sector
title_sort	valorisation of olive mill wastewater from slovenian istria by fe<sub>3</sub>o<sub>4</sub> particles to recover polyphenolic compounds for the chemical specialties sector
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/d8a906a114814094a1ccce5c7de997e9
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The Valorisation of Olive Mill Wastewater from Slovenian Istria by Fe<sub>3</sub>O<sub>4</sub> Particles to Recover Polyphenolic Compounds for the Chemical Specialties Sector

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