Cargando…

Pressurized Hot Water Extraction and Bio-Hydrogels Formulation with Aristotelia chilensis [Mol.] Stuntz Leaves

Aristotelia chilensis is a plant rich in phenolics and other bioactive compounds. Their leaves are discarded as waste in the maqui berry industry. A new application of these wastes is intended by the recovery of bioactive compounds using pressurized hot water extraction with conventional or microwav...

Descripción completa

Detalles Bibliográficos
Autores principales: Bianchi, Audrey, R. Rivera-Tovar, Pamela, Sanz, Vanesa, Ferreira-Anta, Tania, Torres, María Dolores, Pérez-Correa, José Ricardo, Domínguez, Herminia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8586920/
https://www.ncbi.nlm.nih.gov/pubmed/34770811
http://dx.doi.org/10.3390/molecules26216402
_version_ 1784597980052979712
author Bianchi, Audrey
R. Rivera-Tovar, Pamela
Sanz, Vanesa
Ferreira-Anta, Tania
Torres, María Dolores
Pérez-Correa, José Ricardo
Domínguez, Herminia
author_facet Bianchi, Audrey
R. Rivera-Tovar, Pamela
Sanz, Vanesa
Ferreira-Anta, Tania
Torres, María Dolores
Pérez-Correa, José Ricardo
Domínguez, Herminia
author_sort Bianchi, Audrey
collection PubMed
description Aristotelia chilensis is a plant rich in phenolics and other bioactive compounds. Their leaves are discarded as waste in the maqui berry industry. A new application of these wastes is intended by the recovery of bioactive compounds using pressurized hot water extraction with conventional or microwave heating. Both technologies have been selected for their green character regarding the type of solvent and the high efficiency in shorter operation times. Extractions were performed in the temperature range 140–200 °C with a solid/liquid ratio of 1:15 (w:w). The extracts’ total phenolic content, antioxidant capacity, and saccharides content obtained with both heating methods were measured. Additionally, the thermo-rheological properties of the gelling matrix enriched with these extracts were analyzed. Optimum conditions for lyophilized extracts were found with conventional heating, at 140 °C and 20 min extraction; 250.0 mg GAE/g dry extract and 1321.5 mg Trolox/g dry extract. Close to optimum performance was achieved with microwave heating in a fraction of the time (5 min) at 160 °C (extraction), yielding extracts with 231.9 mg GAE/g dry extract of total phenolics and antiradical capacity equivalent to 1176.3 mg Trolox/g dry extract. Slightly higher antioxidant values were identified for spray-dried extracts (between 5% for phenolic content and 2.5% for antioxidant capacity). The extracts obtained with both heating methods at 200 °C contained more than 20% oligosaccharides, primarily glucose. All the formulated gelling matrices enriched with the obtained extracts displayed intermediate gel strength properties. The tested technologies efficiently recovered highly active antioxidant extracts, rich in polyphenolics, and valuable for formulating gelling matrices with potential applicability in foods and other products.
format Online
Article
Text
id pubmed-8586920
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-85869202021-11-13 Pressurized Hot Water Extraction and Bio-Hydrogels Formulation with Aristotelia chilensis [Mol.] Stuntz Leaves Bianchi, Audrey R. Rivera-Tovar, Pamela Sanz, Vanesa Ferreira-Anta, Tania Torres, María Dolores Pérez-Correa, José Ricardo Domínguez, Herminia Molecules Article Aristotelia chilensis is a plant rich in phenolics and other bioactive compounds. Their leaves are discarded as waste in the maqui berry industry. A new application of these wastes is intended by the recovery of bioactive compounds using pressurized hot water extraction with conventional or microwave heating. Both technologies have been selected for their green character regarding the type of solvent and the high efficiency in shorter operation times. Extractions were performed in the temperature range 140–200 °C with a solid/liquid ratio of 1:15 (w:w). The extracts’ total phenolic content, antioxidant capacity, and saccharides content obtained with both heating methods were measured. Additionally, the thermo-rheological properties of the gelling matrix enriched with these extracts were analyzed. Optimum conditions for lyophilized extracts were found with conventional heating, at 140 °C and 20 min extraction; 250.0 mg GAE/g dry extract and 1321.5 mg Trolox/g dry extract. Close to optimum performance was achieved with microwave heating in a fraction of the time (5 min) at 160 °C (extraction), yielding extracts with 231.9 mg GAE/g dry extract of total phenolics and antiradical capacity equivalent to 1176.3 mg Trolox/g dry extract. Slightly higher antioxidant values were identified for spray-dried extracts (between 5% for phenolic content and 2.5% for antioxidant capacity). The extracts obtained with both heating methods at 200 °C contained more than 20% oligosaccharides, primarily glucose. All the formulated gelling matrices enriched with the obtained extracts displayed intermediate gel strength properties. The tested technologies efficiently recovered highly active antioxidant extracts, rich in polyphenolics, and valuable for formulating gelling matrices with potential applicability in foods and other products. MDPI 2021-10-23 /pmc/articles/PMC8586920/ /pubmed/34770811 http://dx.doi.org/10.3390/molecules26216402 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Bianchi, Audrey
R. Rivera-Tovar, Pamela
Sanz, Vanesa
Ferreira-Anta, Tania
Torres, María Dolores
Pérez-Correa, José Ricardo
Domínguez, Herminia
Pressurized Hot Water Extraction and Bio-Hydrogels Formulation with Aristotelia chilensis [Mol.] Stuntz Leaves
title Pressurized Hot Water Extraction and Bio-Hydrogels Formulation with Aristotelia chilensis [Mol.] Stuntz Leaves
title_full Pressurized Hot Water Extraction and Bio-Hydrogels Formulation with Aristotelia chilensis [Mol.] Stuntz Leaves
title_fullStr Pressurized Hot Water Extraction and Bio-Hydrogels Formulation with Aristotelia chilensis [Mol.] Stuntz Leaves
title_full_unstemmed Pressurized Hot Water Extraction and Bio-Hydrogels Formulation with Aristotelia chilensis [Mol.] Stuntz Leaves
title_short Pressurized Hot Water Extraction and Bio-Hydrogels Formulation with Aristotelia chilensis [Mol.] Stuntz Leaves
title_sort pressurized hot water extraction and bio-hydrogels formulation with aristotelia chilensis [mol.] stuntz leaves
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8586920/
https://www.ncbi.nlm.nih.gov/pubmed/34770811
http://dx.doi.org/10.3390/molecules26216402
work_keys_str_mv AT bianchiaudrey pressurizedhotwaterextractionandbiohydrogelsformulationwitharistoteliachilensismolstuntzleaves
AT rriveratovarpamela pressurizedhotwaterextractionandbiohydrogelsformulationwitharistoteliachilensismolstuntzleaves
AT sanzvanesa pressurizedhotwaterextractionandbiohydrogelsformulationwitharistoteliachilensismolstuntzleaves
AT ferreiraantatania pressurizedhotwaterextractionandbiohydrogelsformulationwitharistoteliachilensismolstuntzleaves
AT torresmariadolores pressurizedhotwaterextractionandbiohydrogelsformulationwitharistoteliachilensismolstuntzleaves
AT perezcorreajosericardo pressurizedhotwaterextractionandbiohydrogelsformulationwitharistoteliachilensismolstuntzleaves
AT dominguezherminia pressurizedhotwaterextractionandbiohydrogelsformulationwitharistoteliachilensismolstuntzleaves