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http://dx.doi.org/10.9721/KJFST.2015.47.4.460

Effect of Salt Fermentation on the Physicochemical Properties and Antioxidant Activities of Sea Urchin Roe from Anthocidaris crassispina and Pseudocentrotus depressus  

Choi, Bogyoung (Department of Food and Nutrition, Kangwon National University)
Surh, Jeonghee (Department of Food and Nutrition, Kangwon National University)
Publication Information
Korean Journal of Food Science and Technology / v.47, no.4, 2015 , pp. 460-467 More about this Journal
Abstract
Sea urchin roe obtained from Anthocidaris crassispina and Pseudocentrotus depressus was briefly salt-fermented (5%), followed by ethanol treatment (1%) and the physicochemical properties as well as antioxidant activity were investigated. Compared to raw sea urchin roes, the salted one showed a significantly low amount of water (p<0.001) high salinity (p<0.05), ash content (p<0.001) and Na content (p<0.001). With salt-fermentation, the redness (p<0.05) and yellowness (p<0.001) of roe decreased noticeably, indicating the decomposition of endogenous carotenoids. Accordingly, the salted roe showed a lower DPPH radical scavenging activity than its unsalted counterpart. Additionally, it showed a significantly lower metal-chelating activity (p<0.05) and metal chelator content (e.g. ortho-phenolics) displayed by a negligible difference in titratable acidity. The salted roe showed significantly increased hardness (p<0.05) and total reducing capacity (p<0.001), which were attributed to the protein coagulation and the release of antioxidants bound to macromolecules after the ethanol treatment, respectively.
Keywords
sea urchin; salt fermentation; antioxidant activity; color; hardness;
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Times Cited By KSCI : 2  (Citation Analysis)
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