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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MDPI AG
2021
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Online Access: | https://doi.org/10.3390/md19090491 https://doaj.org/article/6c8a8e38e6c344e19d257b0eb520f0ed |
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ftdoajarticles:oai:doaj.org/article:6c8a8e38e6c344e19d257b0eb520f0ed 2023-05-15T18:40:57+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 2021-08-01T00:00:00Z https://doi.org/10.3390/md19090491 https://doaj.org/article/6c8a8e38e6c344e19d257b0eb520f0ed EN eng MDPI AG https://www.mdpi.com/1660-3397/19/9/491 https://doaj.org/toc/1660-3397 doi:10.3390/md19090491 1660-3397 https://doaj.org/article/6c8a8e38e6c344e19d257b0eb520f0ed Marine Drugs, Vol 19, Iss 491, p 491 (2021) turbot gelatin aquaculture by-products valorization marine biomaterials Biology (General) QH301-705.5 article 2021 ftdoajarticles https://doi.org/10.3390/md19090491 2022-12-30T20:08:57Z 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 Directory of Open Access Journals: DOAJ Articles Marine Drugs 19 9 491 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
turbot gelatin aquaculture by-products valorization marine biomaterials Biology (General) QH301-705.5 |
spellingShingle |
turbot gelatin aquaculture by-products valorization marine biomaterials Biology (General) QH301-705.5 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 |
topic_facet |
turbot gelatin aquaculture by-products valorization marine biomaterials Biology (General) QH301-705.5 |
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 |
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 |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doi.org/10.3390/md19090491 https://doaj.org/article/6c8a8e38e6c344e19d257b0eb520f0ed |
genre |
Turbot |
genre_facet |
Turbot |
op_source |
Marine Drugs, Vol 19, Iss 491, p 491 (2021) |
op_relation |
https://www.mdpi.com/1660-3397/19/9/491 https://doaj.org/toc/1660-3397 doi:10.3390/md19090491 1660-3397 https://doaj.org/article/6c8a8e38e6c344e19d257b0eb520f0ed |
op_doi |
https://doi.org/10.3390/md19090491 |
container_title |
Marine Drugs |
container_volume |
19 |
container_issue |
9 |
container_start_page |
491 |
_version_ |
1766230422218342400 |