Growth characteristics and antioxidant properties of the benthic diatom Navicula incerta (Bacillariophyceae) from Jeju Island, Korea SCIE SCOPUS
DC Field | Value | Language |
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dc.contributor.author | Affan, A. | - |
dc.contributor.author | Karawita, R. | - |
dc.contributor.author | Jeon, Y.-J. | - |
dc.contributor.author | Lee, J.-B. | - |
dc.date.accessioned | 2020-04-20T11:55:09Z | - |
dc.date.available | 2020-04-20T11:55:09Z | - |
dc.date.created | 2020-01-28 | - |
dc.date.issued | 2007-08 | - |
dc.identifier.issn | 0022-3646 | - |
dc.identifier.uri | https://sciwatch.kiost.ac.kr/handle/2020.kiost/4660 | - |
dc.description.abstract | Benthic diatoms are a commonly used food source in shellfish aquaculture. Diatoms of the genus Navicula are the most abundant benthic diatoms occurring year-round on the coast of Jeju Island, Korea. We isolated an axenic strain of N. incerta Grunow; estimated its growth characteristics under 27 different combinations of temperature, salinity, and nutrients; and determined its biochemical composition and antioxidant activities. The maximum specific growth rate (μmax), defined as the increase in cell density per unit time, was 0.81-1.04·d-1, and the maximum cell density, 7.99 × 105 cells·mL-1, was reached at 0.88·d-1 μmax, 20°C, 30 psu salinity, and F/2 nutrient concentration on day 12 of the culture period. The approximate cellular composition was as follows: 7.0 ± 0.04% protein, 1.7 ± 0.28% lipid, 12.8 ± 0.85% carbohydrate, 68.4 ± 0.09% ash, and 10.1 ± 0.44% moisture. The antioxidant properties of N. incerta were determined for various extracts. The rates of 1,1-diphenyl-2-picrylhydrazyl (DPPH) free-radical scavenging for Neutrase and methanol extracts were 81.6% and 62.8%, respectively. Flavourzyme extract had a superoxide-scavenging rate of 57.7%. Kojizyme and Ultraflo extracts had nitric-oxide-scavenging rates of 42.2% and 40.6%, respectively, significantly higher than commercial antioxidants, such as α-tocopherol and butylated hydroxytoluene (BHT). The metal-chelating activities of the methanol, Neutrase, and Termamyl extracts were 68.5%, 45.2%, and 41.2%, respectively, four to six times higher than commercial antioxidants. The Termamyl extract showed the highest linoleic acid peroxidation inhibition, exceeding α-tocopherol and on par with BHT. © 2007 Phycological Society of America. | - |
dc.description.uri | 1 | - |
dc.language | English | - |
dc.publisher | Blackwell Publishing Inc. | - |
dc.title | Growth characteristics and antioxidant properties of the benthic diatom Navicula incerta (Bacillariophyceae) from Jeju Island, Korea | - |
dc.type | Article | - |
dc.citation.endPage | 832 | - |
dc.citation.startPage | 823 | - |
dc.citation.title | Journal of Phycology | - |
dc.citation.volume | 43 | - |
dc.citation.number | 4 | - |
dc.contributor.alternativeName | Abu Affan | - |
dc.identifier.bibliographicCitation | Journal of Phycology, v.43, no.4, pp.823 - 832 | - |
dc.identifier.doi | 10.1111/j.1529-8817.2007.00367.x | - |
dc.identifier.scopusid | 2-s2.0-34547586338 | - |
dc.identifier.wosid | 000248544800020 | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.subject.keywordPlus | Bacillariophyceae | - |
dc.subject.keywordPlus | Bacillariophyta | - |
dc.subject.keywordPlus | Navicula | - |
dc.subject.keywordPlus | Navicula incerta | - |
dc.subject.keywordAuthor | Antioxidant activities | - |
dc.subject.keywordAuthor | Benthic diatoms | - |
dc.subject.keywordAuthor | Growth characteristics | - |
dc.subject.keywordAuthor | Mass culture | - |
dc.subject.keywordAuthor | Navicula | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |