| Compositional characteristics and antioxidant properties of fresh and processed sea cucumber (Cucumaria frondosa). | |
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MedLine Citation:
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PMID: 17243707 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The antioxidant activity of fresh and rehydrated sea cucumber (Cucumaria frondosa) samples with/without internal organs was evaluated for the first time. In addition, their proximate, amino acid, and fatty acid compositions were examined. Rehydrated sea cucumber samples in distilled water were prepared from oven-dried products. All samples contained 83-90% moisture, but showed a significant difference among groups in their protein and lipid contents. Glutamic acid was the predominant amino acid in sea cucumber, followed by glycine and aspartic acid. Essential amino acids such as leucine and lysine were also present at high levels. The trend for free amino acid was different from that of total amino acids and varied among groups. Lipids in sea cucumber were dominated by eicosapentaenoic acid (EPA, C20:5n-3), ranging from 43.2 to 56.7% of the total fatty acids. Docosahexaenoic acid (DHA, C22:6n-3) was present at a much lower concentration of 2.0-5.8%. All sea cucumber samples exhibited radical scavenging property against 2,2'-azobis(2-aminopropane) dihydrochloride (AAPH) and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals, with rehydrated samples, especially those with internal organs, possessing higher antioxidant activity than their fresh counterparts. No correlation existed between radical scavenging capacity and total phenolics content, suggesting that other components, in addition to phenolic compounds, contribute to the antioxidant activity of sea cucumber. |
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Authors:
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Ying Zhong; Muhammad Ahmad Khan; Fereidoon Shahidi |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2007-01-23 |
Journal Detail:
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Title: Journal of agricultural and food chemistry Volume: 55 ISSN: 0021-8561 ISO Abbreviation: J. Agric. Food Chem. Publication Date: 2007 Feb |
Date Detail:
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Created Date: 2007-02-15 Completed Date: 2007-06-06 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0374755 Medline TA: J Agric Food Chem Country: United States |
Other Details:
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Languages: eng Pagination: 1188-92 Citation Subset: IM |
Affiliation:
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Department of Biochemistry, Memorial University of Newfoundland, St. John's, Newfoundland, Canada A1B 3X9. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Amino Acids
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analysis Animals Antioxidants / analysis* Cucumaria / chemistry* Fatty Acids / analysis Food Handling / methods* Phenols / analysis |
| Chemical | |
Reg. No./Substance:
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0/Amino Acids; 0/Antioxidants; 0/Fatty Acids; 0/Phenols |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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