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...
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8465087/ http://www.ncbi.nlm.nih.gov/pubmed/34564153 https://doi.org/10.3390/md19090491 |
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ftpubmed:oai:pubmedcentral.nih.gov:8465087 2023-05-15T18:40:59+02:00 Production and Physicochemical Characterization of Gelatin and Collagen Hydrolysates from Turbot Skin Waste Generated by Aquaculture Activities Valcarcel, Jesus Fraguas, Javier Hermida-Merino, Carolina Hermida-Merino, Daniel Piñeiro, Manuel M. Vázquez, José Antonio 2021-08-28 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8465087/ http://www.ncbi.nlm.nih.gov/pubmed/34564153 https://doi.org/10.3390/md19090491 en eng MDPI http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8465087/ http://www.ncbi.nlm.nih.gov/pubmed/34564153 http://dx.doi.org/10.3390/md19090491 © 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/). CC-BY Mar Drugs Article Text 2021 ftpubmed https://doi.org/10.3390/md19090491 2021-10-03T00:51:19Z 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. Text Turbot PubMed Central (PMC) Marine Drugs 19 9 491 |
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Article Valcarcel, Jesus Fraguas, Javier Hermida-Merino, Carolina Hermida-Merino, Daniel Piñeiro, Manuel M. Vázquez, José Antonio Production and Physicochemical Characterization of Gelatin and Collagen Hydrolysates from Turbot Skin Waste Generated by Aquaculture Activities |
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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 |
Text |
author |
Valcarcel, Jesus Fraguas, Javier Hermida-Merino, Carolina Hermida-Merino, Daniel Piñeiro, Manuel M. Vázquez, José Antonio |
author_facet |
Valcarcel, Jesus Fraguas, Javier Hermida-Merino, Carolina Hermida-Merino, Daniel Piñeiro, Manuel M. Vázquez, José Antonio |
author_sort |
Valcarcel, Jesus |
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 |
publisher |
MDPI |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8465087/ http://www.ncbi.nlm.nih.gov/pubmed/34564153 https://doi.org/10.3390/md19090491 |
genre |
Turbot |
genre_facet |
Turbot |
op_source |
Mar Drugs |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8465087/ http://www.ncbi.nlm.nih.gov/pubmed/34564153 http://dx.doi.org/10.3390/md19090491 |
op_rights |
© 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/). |
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CC-BY |
op_doi |
https://doi.org/10.3390/md19090491 |
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Marine Drugs |
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19 |
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9 |
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491 |
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