Subcritical Water Extraction of Chestnut Bark and Optimization of Process Parameters

The aim of the work was the optimization of the subcritical water extraction process of chestnut bark using Box–Behnken response surface methodology. The influence of process parameters, such as temperature, extraction time and solvent-solid ratio, on extraction yield, yield of the main compounds, t...

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Main Authors:	Tanja Gagić, Željko Knez, Mojca Škerget
Format:	Article
Language:	English
Published:	MDPI AG 2020-06-01
Series:	Molecules
Subjects:	subcritical water sweet chestnut bark ellagic acid gallic acid ellagitannins
Online Access:	https://www.mdpi.com/1420-3049/25/12/2774

id	doaj-6db8021e90144bb09301f0cb5b832175
record_format	Article
spelling	doaj-6db8021e90144bb09301f0cb5b8321752020-11-25T03:48:48ZengMDPI AGMolecules1420-30492020-06-01252774277410.3390/molecules25122774Subcritical Water Extraction of Chestnut Bark and Optimization of Process ParametersTanja Gagić0Željko Knez1Mojca Škerget2Laboratory for Separation Processes and Product Design, Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, SloveniaLaboratory for Separation Processes and Product Design, Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, SloveniaLaboratory for Separation Processes and Product Design, Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, SloveniaThe aim of the work was the optimization of the subcritical water extraction process of chestnut bark using Box–Behnken response surface methodology. The influence of process parameters, such as temperature, extraction time and solvent-solid ratio, on extraction yield, yield of the main compounds, total phenol content, total tannin content and antioxidant activity has been investigated. The identified compounds were ellagic and gallic acids, ellagitannins (vescalagin, castalagin, 1-<i>o</i>-galloyl castalagin, vescalin and castalin), sugars (maltose, glucose, fructose and arabinose) and sugar derivatives (5-HMF, furfural and levulinic acid). Finally, the optimal process conditions for obtaining the bark extract highly rich in ellagic acid and with satisfactory levels of total phenols and total tannins have been determined.https://www.mdpi.com/1420-3049/25/12/2774subcritical watersweet chestnut barkellagic acidgallic acidellagitannins
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Tanja Gagić Željko Knez Mojca Škerget
spellingShingle	Tanja Gagić Željko Knez Mojca Škerget Subcritical Water Extraction of Chestnut Bark and Optimization of Process Parameters Molecules subcritical water sweet chestnut bark ellagic acid gallic acid ellagitannins
author_facet	Tanja Gagić Željko Knez Mojca Škerget
author_sort	Tanja Gagić
title	Subcritical Water Extraction of Chestnut Bark and Optimization of Process Parameters
title_short	Subcritical Water Extraction of Chestnut Bark and Optimization of Process Parameters
title_full	Subcritical Water Extraction of Chestnut Bark and Optimization of Process Parameters
title_fullStr	Subcritical Water Extraction of Chestnut Bark and Optimization of Process Parameters
title_full_unstemmed	Subcritical Water Extraction of Chestnut Bark and Optimization of Process Parameters
title_sort	subcritical water extraction of chestnut bark and optimization of process parameters
publisher	MDPI AG
series	Molecules
issn	1420-3049
publishDate	2020-06-01
description	The aim of the work was the optimization of the subcritical water extraction process of chestnut bark using Box–Behnken response surface methodology. The influence of process parameters, such as temperature, extraction time and solvent-solid ratio, on extraction yield, yield of the main compounds, total phenol content, total tannin content and antioxidant activity has been investigated. The identified compounds were ellagic and gallic acids, ellagitannins (vescalagin, castalagin, 1-<i>o</i>-galloyl castalagin, vescalin and castalin), sugars (maltose, glucose, fructose and arabinose) and sugar derivatives (5-HMF, furfural and levulinic acid). Finally, the optimal process conditions for obtaining the bark extract highly rich in ellagic acid and with satisfactory levels of total phenols and total tannins have been determined.
topic	subcritical water sweet chestnut bark ellagic acid gallic acid ellagitannins
url	https://www.mdpi.com/1420-3049/25/12/2774
work_keys_str_mv	AT tanjagagic subcriticalwaterextractionofchestnutbarkandoptimizationofprocessparameters AT zeljkoknez subcriticalwaterextractionofchestnutbarkandoptimizationofprocessparameters AT mojcaskerget subcriticalwaterextractionofchestnutbarkandoptimizationofprocessparameters
_version_	1724497095007666176

Subcritical Water Extraction of Chestnut Bark and Optimization of Process Parameters

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