Production and Physicochemical Characterization of Gelatin and Collagen Hydrolysates from Turbot Skin Waste Generated by Aquaculture Activities
Rising trends in fish filleting are increasing the amount of processing by-products, such as skins of turbot, a flatfish of high commercial value. In line with circular economy principles, we propose the valorization of turbot skins through a two-step process: initial gelatin extraction described fo...
Published in: | Marine Drugs |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
2021
|
Subjects: | |
Online Access: | https://zenodo.org/record/5561128 https://doi.org/10.3390/md19090491 |
id |
ftzenodo:oai:zenodo.org:5561128 |
---|---|
record_format |
openpolar |
spelling |
ftzenodo:oai:zenodo.org:5561128 2023-05-15T18:40:59+02:00 Production and Physicochemical Characterization of Gelatin and Collagen Hydrolysates from Turbot Skin Waste Generated by Aquaculture Activities Jesus Valcarcel Javier Fraguas Carolina Hermida-Merino Daniel Hermida-Merino Manuel M. Piñeiro José Antonio Vázquez 2021-08-28 https://zenodo.org/record/5561128 https://doi.org/10.3390/md19090491 unknown info:eu-repo/grantAgreement/EC/H2020/773330/ https://zenodo.org/record/5561128 https://doi.org/10.3390/md19090491 oai:zenodo.org:5561128 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode info:eu-repo/semantics/article publication-article 2021 ftzenodo https://doi.org/10.3390/md19090491 2023-03-10T22:30:41Z Rising trends in fish filleting are increasing the amount of processing by-products, such as skins of turbot, a flatfish of high commercial value. In line with circular economy principles, we propose the valorization of turbot skins through a two-step process: initial gelatin extraction described for the first time in turbot, followed by hydrolysis of the remaining solids to produce collagen hydrolysates. We assayed several methods for gelatin extraction, finding differences in gelatin properties depending on chemical treatment and temperature. Of all methods, the application of NaOH, sulfuric, and citric acids at 22 °C results in the highest gel strength (177 g), storage and loss moduli, and gel stability. We found no relation between mechanical properties and content of pyrrolidine amino acids, but the best performing gelatin displays higher structural integrity, with less than 30% of the material below 100 kDa. Collagen hydrolysis was more efficient with papain than alcalase, leading to a greater reduction in Mw of the hydrolysates, which contain a higher proportion of essential amino acids than gelatin and show high in vitro anti-hypertensive activity. These results highlight the suitability of turbot skin by-products as a source of gelatin and the potential of collagen hydrolysates as a functional food and feed ingredient. Article in Journal/Newspaper Turbot Zenodo Marine Drugs 19 9 491 |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
description |
Rising trends in fish filleting are increasing the amount of processing by-products, such as skins of turbot, a flatfish of high commercial value. In line with circular economy principles, we propose the valorization of turbot skins through a two-step process: initial gelatin extraction described for the first time in turbot, followed by hydrolysis of the remaining solids to produce collagen hydrolysates. We assayed several methods for gelatin extraction, finding differences in gelatin properties depending on chemical treatment and temperature. Of all methods, the application of NaOH, sulfuric, and citric acids at 22 °C results in the highest gel strength (177 g), storage and loss moduli, and gel stability. We found no relation between mechanical properties and content of pyrrolidine amino acids, but the best performing gelatin displays higher structural integrity, with less than 30% of the material below 100 kDa. Collagen hydrolysis was more efficient with papain than alcalase, leading to a greater reduction in Mw of the hydrolysates, which contain a higher proportion of essential amino acids than gelatin and show high in vitro anti-hypertensive activity. These results highlight the suitability of turbot skin by-products as a source of gelatin and the potential of collagen hydrolysates as a functional food and feed ingredient. |
format |
Article in Journal/Newspaper |
author |
Jesus Valcarcel Javier Fraguas Carolina Hermida-Merino Daniel Hermida-Merino Manuel M. Piñeiro José Antonio Vázquez |
spellingShingle |
Jesus Valcarcel Javier Fraguas Carolina Hermida-Merino Daniel Hermida-Merino Manuel M. Piñeiro José Antonio Vázquez Production and Physicochemical Characterization of Gelatin and Collagen Hydrolysates from Turbot Skin Waste Generated by Aquaculture Activities |
author_facet |
Jesus Valcarcel Javier Fraguas Carolina Hermida-Merino Daniel Hermida-Merino Manuel M. Piñeiro José Antonio Vázquez |
author_sort |
Jesus Valcarcel |
title |
Production and Physicochemical Characterization of Gelatin and Collagen Hydrolysates from Turbot Skin Waste Generated by Aquaculture Activities |
title_short |
Production and Physicochemical Characterization of Gelatin and Collagen Hydrolysates from Turbot Skin Waste Generated by Aquaculture Activities |
title_full |
Production and Physicochemical Characterization of Gelatin and Collagen Hydrolysates from Turbot Skin Waste Generated by Aquaculture Activities |
title_fullStr |
Production and Physicochemical Characterization of Gelatin and Collagen Hydrolysates from Turbot Skin Waste Generated by Aquaculture Activities |
title_full_unstemmed |
Production and Physicochemical Characterization of Gelatin and Collagen Hydrolysates from Turbot Skin Waste Generated by Aquaculture Activities |
title_sort |
production and physicochemical characterization of gelatin and collagen hydrolysates from turbot skin waste generated by aquaculture activities |
publishDate |
2021 |
url |
https://zenodo.org/record/5561128 https://doi.org/10.3390/md19090491 |
genre |
Turbot |
genre_facet |
Turbot |
op_relation |
info:eu-repo/grantAgreement/EC/H2020/773330/ https://zenodo.org/record/5561128 https://doi.org/10.3390/md19090491 oai:zenodo.org:5561128 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.3390/md19090491 |
container_title |
Marine Drugs |
container_volume |
19 |
container_issue |
9 |
container_start_page |
491 |
_version_ |
1766230469637046272 |