Assessing the Potential of Algae Extracts for Extending the Shelf Life of Rainbow Trout (<i>Oncorhynchus mykiss</i>) Fillets
This study evaluates the potential of different algae extracts (<i>Crassiphycus corneus</i>, <i>Cc</i>; <i>Ulva ohnoi</i>, <i>Uo</i>; <i>Arthrospira platensis</i>, <i>Ap</i>; <i>Haematococcus pluvialis</i>, <i>...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-04-01
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| Series: | Foods |
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| Online Access: | https://www.mdpi.com/2304-8158/10/5/910 |
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| author | María I. Sáez María D. Suárez Francisco J. Alarcón Tomás F. Martínez |
| author_facet | María I. Sáez María D. Suárez Francisco J. Alarcón Tomás F. Martínez |
| author_sort | María I. Sáez |
| collection | DOAJ |
| description | This study evaluates the potential of different algae extracts (<i>Crassiphycus corneus</i>, <i>Cc</i>; <i>Ulva ohnoi</i>, <i>Uo</i>; <i>Arthrospira platensis</i>, <i>Ap</i>; <i>Haematococcus pluvialis</i>, <i>Hp</i>) as additives for the preservation of rainbow trout fillets. The extracts were prepared with different water to ethanol ratios from the four algae species. The highest ferric reducing antioxidant power (FRAP) was observed in <i>Uo</i> extracted in 80% ethanol. <i>Ap</i> aqueous extract also had considerable FRAP activity, in agreement with a high total phenolic content. Radical scavenging activity (DPPH) was higher in <i>Cc</i> 80% ethanol extract, in agreement with a high total carotenoid content. In fact, when the algae aqueous extracts were assayed on the fish fillets, their antioxidant activity exceeded that of ascorbic acid (ASC). All algae extracts delayed microbial growth and lipid oxidation processes in trout fillets throughout the cold storage period compared to controls, and also improved textural parameters, these effects being more evident for <i>Ap</i> and <i>Hp</i>. With respect to the color parameters, the <i>Hp</i> extract prevented the a* values (redness) from decreasing throughout cold storage, a key point when it comes to colored species, not least salmonids. On the other hand, the <i>Ap</i> extract was not as effective as the rest of treatments in avoiding a* and b* decrease throughout the storage period, and thereby the color parameters were impaired. The results obtained, together with the natural origin and the viability for large-scale cultivation, make algae extracts interesting fish preservative agents for the food industry. |
| first_indexed | 2024-03-10T12:06:49Z |
| format | Article |
| id | doaj.art-8067f4127234421f94a09aadef7339b9 |
| institution | Directory Open Access Journal |
| issn | 2304-8158 |
| language | English |
| last_indexed | 2024-03-10T12:06:49Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Foods |
| spelling | doaj.art-8067f4127234421f94a09aadef7339b92023-11-21T16:29:56ZengMDPI AGFoods2304-81582021-04-0110591010.3390/foods10050910Assessing the Potential of Algae Extracts for Extending the Shelf Life of Rainbow Trout (<i>Oncorhynchus mykiss</i>) FilletsMaría I. Sáez0María D. Suárez1Francisco J. Alarcón2Tomás F. Martínez3Departamento de Biología y Geología, Campus de Excelencia Internacional del Mar CEIMAR, Universidad de Almería, 04120 Almería, SpainDepartamento de Biología y Geología, Campus de Excelencia Internacional del Mar CEIMAR, Universidad de Almería, 04120 Almería, SpainDepartamento de Biología y Geología, Campus de Excelencia Internacional del Mar CEIMAR, Universidad de Almería, 04120 Almería, SpainDepartamento de Biología y Geología, Campus de Excelencia Internacional del Mar CEIMAR, Universidad de Almería, 04120 Almería, SpainThis study evaluates the potential of different algae extracts (<i>Crassiphycus corneus</i>, <i>Cc</i>; <i>Ulva ohnoi</i>, <i>Uo</i>; <i>Arthrospira platensis</i>, <i>Ap</i>; <i>Haematococcus pluvialis</i>, <i>Hp</i>) as additives for the preservation of rainbow trout fillets. The extracts were prepared with different water to ethanol ratios from the four algae species. The highest ferric reducing antioxidant power (FRAP) was observed in <i>Uo</i> extracted in 80% ethanol. <i>Ap</i> aqueous extract also had considerable FRAP activity, in agreement with a high total phenolic content. Radical scavenging activity (DPPH) was higher in <i>Cc</i> 80% ethanol extract, in agreement with a high total carotenoid content. In fact, when the algae aqueous extracts were assayed on the fish fillets, their antioxidant activity exceeded that of ascorbic acid (ASC). All algae extracts delayed microbial growth and lipid oxidation processes in trout fillets throughout the cold storage period compared to controls, and also improved textural parameters, these effects being more evident for <i>Ap</i> and <i>Hp</i>. With respect to the color parameters, the <i>Hp</i> extract prevented the a* values (redness) from decreasing throughout cold storage, a key point when it comes to colored species, not least salmonids. On the other hand, the <i>Ap</i> extract was not as effective as the rest of treatments in avoiding a* and b* decrease throughout the storage period, and thereby the color parameters were impaired. The results obtained, together with the natural origin and the viability for large-scale cultivation, make algae extracts interesting fish preservative agents for the food industry.https://www.mdpi.com/2304-8158/10/5/910algae extractsantioxidantsfish preservativestotal carotenoidstotal phenolicstrout fillets |
| spellingShingle | María I. Sáez María D. Suárez Francisco J. Alarcón Tomás F. Martínez Assessing the Potential of Algae Extracts for Extending the Shelf Life of Rainbow Trout (<i>Oncorhynchus mykiss</i>) Fillets Foods algae extracts antioxidants fish preservatives total carotenoids total phenolics trout fillets |
| title | Assessing the Potential of Algae Extracts for Extending the Shelf Life of Rainbow Trout (<i>Oncorhynchus mykiss</i>) Fillets |
| title_full | Assessing the Potential of Algae Extracts for Extending the Shelf Life of Rainbow Trout (<i>Oncorhynchus mykiss</i>) Fillets |
| title_fullStr | Assessing the Potential of Algae Extracts for Extending the Shelf Life of Rainbow Trout (<i>Oncorhynchus mykiss</i>) Fillets |
| title_full_unstemmed | Assessing the Potential of Algae Extracts for Extending the Shelf Life of Rainbow Trout (<i>Oncorhynchus mykiss</i>) Fillets |
| title_short | Assessing the Potential of Algae Extracts for Extending the Shelf Life of Rainbow Trout (<i>Oncorhynchus mykiss</i>) Fillets |
| title_sort | assessing the potential of algae extracts for extending the shelf life of rainbow trout i oncorhynchus mykiss i fillets |
| topic | algae extracts antioxidants fish preservatives total carotenoids total phenolics trout fillets |
| url | https://www.mdpi.com/2304-8158/10/5/910 |
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