Assessing High-Value Bioproducts from Seaweed Biomass: A Comparative Study of Wild, Cultivated and Residual Pulp Sources
This study aimed to evaluate the biochemical composition and bioactivities of biomass derived from wild (<i>Laminaria ochroleuca</i> and <i>Saccorhiza polyschides</i>) and cultivated (<i>Macrocystis pyrifera</i>) kelps, as well as industrially extracted residual p...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-05-01
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| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/15/10/5745 |
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| Summary: | This study aimed to evaluate the biochemical composition and bioactivities of biomass derived from wild (<i>Laminaria ochroleuca</i> and <i>Saccorhiza polyschides</i>) and cultivated (<i>Macrocystis pyrifera</i>) kelps, as well as industrially extracted residual pulp from <i>M. pyrifera</i>, to assess the potential production of high value bioproducts. All samples had a low lipid content, with <i>M. pyrifera</i> having the lowest (1.3% dw) and <i>S. polyschides</i> showing the highest value (3.3%). Fatty acids such as palmitic acid (C16:0), oleic acid (C18:1n-9 cis), alpha-linolenic acid (ALA, C18:3n-3), and eicosapentaenoic acid (EPA, C20:5n-3) were present, with the residual pulp having a distinctive n-6/n-3 ratio of less than one. The protein content was around 9% dry weight (dw) in all samples. The residual pulp and <i>S. polyschides</i> had the highest polyphenol content, with 4.86 and 4.94 mg GAE·g<sup>−1</sup> extract, respectively. Hydroethanolic extracts (30–70%) confirmed Fe<sup>3+</sup> reducing activity (FRAP) in all samples. These findings offer valuable insights on the biochemical composition and bioactivity of the kelp species under study and the residual kelp biomass (pulp), underlining their significant potential for applications in the field of Blue Biotechnology. |
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| ISSN: | 2076-3417 |