The Structure and Composition of Extracted Pectin and Residual Cell Wall Material from Processing Tomato: The Role of a Stepwise Approach versus High-Pressure Homogenization-Facilitated Acid Extraction

In literature, different pectin extraction methods exist. In this study, two approaches starting from the alcohol-insoluble residue (AIR) of processing tomato are performed in a parallel way to facilitate the comparison of pectin yield and the compositional and structural properties of the extracted...

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Main Authors: Jelle Van Audenhove, Tom Bernaerts, Victor De Smet, Sophie Delbaere, Ann M. Van Loey, Marc E. Hendrickx
Format: Article
Language:English
Published: MDPI AG 2021-05-01
Series:Foods
Subjects:
Online Access:https://www.mdpi.com/2304-8158/10/5/1064
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author Jelle Van Audenhove
Tom Bernaerts
Victor De Smet
Sophie Delbaere
Ann M. Van Loey
Marc E. Hendrickx
author_facet Jelle Van Audenhove
Tom Bernaerts
Victor De Smet
Sophie Delbaere
Ann M. Van Loey
Marc E. Hendrickx
author_sort Jelle Van Audenhove
collection DOAJ
description In literature, different pectin extraction methods exist. In this study, two approaches starting from the alcohol-insoluble residue (AIR) of processing tomato are performed in a parallel way to facilitate the comparison of pectin yield and the compositional and structural properties of the extracted pectin and residual cell wall material obtained. On the one hand, pectin is extracted stepwise using hot water, chelating agents and low-alkaline conditions targeting fractionation of the pectin population. On the other hand, an industrially relevant single-step nitric acid pectin extraction (pH 1.6) is performed. In addition to these conventional solvent pectin extractions, the role of high-pressure homogenization (HPH) as a physically disruptive treatment to facilitate further pectin extraction from the partially pectin-depleted fraction obtained after acid extraction is addressed. The impact of HPH on the pectin cell wall polysaccharide interactions was shown as almost two thirds of the residual pectin were extractable during the subsequent extractions. For both extraction approaches, pectin obtained further in the sequence was characterized by a higher molecular mass and a higher amount of rhamnogalacturonan I domains. The estimated hemicellulose and cellulose content increased from 56 mol% for the AIR to almost 90 mol% for the final unextractable fractions of both methods.
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spelling doaj.art-e1f6fdbe44364179b7897b171e6c66b52023-11-21T19:19:23ZengMDPI AGFoods2304-81582021-05-01105106410.3390/foods10051064The Structure and Composition of Extracted Pectin and Residual Cell Wall Material from Processing Tomato: The Role of a Stepwise Approach versus High-Pressure Homogenization-Facilitated Acid ExtractionJelle Van Audenhove0Tom Bernaerts1Victor De Smet2Sophie Delbaere3Ann M. Van Loey4Marc E. Hendrickx5Laboratory of Food Technology and Leuven Food Science and Nutrition Research Centre (LFoRCe), Department of Microbial and Molecular Systems (M2S), KU Leuven, Kasteelpark Arenberg 22, Box 2457, 3001 Leuven, BelgiumLaboratory of Food Technology and Leuven Food Science and Nutrition Research Centre (LFoRCe), Department of Microbial and Molecular Systems (M2S), KU Leuven, Kasteelpark Arenberg 22, Box 2457, 3001 Leuven, BelgiumLaboratory of Food Technology and Leuven Food Science and Nutrition Research Centre (LFoRCe), Department of Microbial and Molecular Systems (M2S), KU Leuven, Kasteelpark Arenberg 22, Box 2457, 3001 Leuven, BelgiumLaboratory of Food Technology and Leuven Food Science and Nutrition Research Centre (LFoRCe), Department of Microbial and Molecular Systems (M2S), KU Leuven, Kasteelpark Arenberg 22, Box 2457, 3001 Leuven, BelgiumLaboratory of Food Technology and Leuven Food Science and Nutrition Research Centre (LFoRCe), Department of Microbial and Molecular Systems (M2S), KU Leuven, Kasteelpark Arenberg 22, Box 2457, 3001 Leuven, BelgiumLaboratory of Food Technology and Leuven Food Science and Nutrition Research Centre (LFoRCe), Department of Microbial and Molecular Systems (M2S), KU Leuven, Kasteelpark Arenberg 22, Box 2457, 3001 Leuven, BelgiumIn literature, different pectin extraction methods exist. In this study, two approaches starting from the alcohol-insoluble residue (AIR) of processing tomato are performed in a parallel way to facilitate the comparison of pectin yield and the compositional and structural properties of the extracted pectin and residual cell wall material obtained. On the one hand, pectin is extracted stepwise using hot water, chelating agents and low-alkaline conditions targeting fractionation of the pectin population. On the other hand, an industrially relevant single-step nitric acid pectin extraction (pH 1.6) is performed. In addition to these conventional solvent pectin extractions, the role of high-pressure homogenization (HPH) as a physically disruptive treatment to facilitate further pectin extraction from the partially pectin-depleted fraction obtained after acid extraction is addressed. The impact of HPH on the pectin cell wall polysaccharide interactions was shown as almost two thirds of the residual pectin were extractable during the subsequent extractions. For both extraction approaches, pectin obtained further in the sequence was characterized by a higher molecular mass and a higher amount of rhamnogalacturonan I domains. The estimated hemicellulose and cellulose content increased from 56 mol% for the AIR to almost 90 mol% for the final unextractable fractions of both methods.https://www.mdpi.com/2304-8158/10/5/1064processing tomatocell wall polysaccharidespectin extraction methodscell wall interactionshigh-pressure homogenizationstructural characterization
spellingShingle Jelle Van Audenhove
Tom Bernaerts
Victor De Smet
Sophie Delbaere
Ann M. Van Loey
Marc E. Hendrickx
The Structure and Composition of Extracted Pectin and Residual Cell Wall Material from Processing Tomato: The Role of a Stepwise Approach versus High-Pressure Homogenization-Facilitated Acid Extraction
Foods
processing tomato
cell wall polysaccharides
pectin extraction methods
cell wall interactions
high-pressure homogenization
structural characterization
title The Structure and Composition of Extracted Pectin and Residual Cell Wall Material from Processing Tomato: The Role of a Stepwise Approach versus High-Pressure Homogenization-Facilitated Acid Extraction
title_full The Structure and Composition of Extracted Pectin and Residual Cell Wall Material from Processing Tomato: The Role of a Stepwise Approach versus High-Pressure Homogenization-Facilitated Acid Extraction
title_fullStr The Structure and Composition of Extracted Pectin and Residual Cell Wall Material from Processing Tomato: The Role of a Stepwise Approach versus High-Pressure Homogenization-Facilitated Acid Extraction
title_full_unstemmed The Structure and Composition of Extracted Pectin and Residual Cell Wall Material from Processing Tomato: The Role of a Stepwise Approach versus High-Pressure Homogenization-Facilitated Acid Extraction
title_short The Structure and Composition of Extracted Pectin and Residual Cell Wall Material from Processing Tomato: The Role of a Stepwise Approach versus High-Pressure Homogenization-Facilitated Acid Extraction
title_sort structure and composition of extracted pectin and residual cell wall material from processing tomato the role of a stepwise approach versus high pressure homogenization facilitated acid extraction
topic processing tomato
cell wall polysaccharides
pectin extraction methods
cell wall interactions
high-pressure homogenization
structural characterization
url https://www.mdpi.com/2304-8158/10/5/1064
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