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http://dx.doi.org/10.5657/KFAS.2018.0221

Changes in Nutrient and Pigment Contents of Laver Pyropia yezoensis Based on Heating Process and Storage  

Nguyen, Thanh Tri (Department of Seafood Science and Technology/Institute of Marine Industry, Gyeongsang National University)
Choi, Yong-Jun (Department of Seafood Science and Technology/Institute of Marine Industry, Gyeongsang National University)
Nguyen, Thi Hong Phuong (Department of Seafood Science and Technology/Institute of Marine Industry, Gyeongsang National University)
Neri, Therese Ariane (Department of Seafood Science and Technology/Institute of Marine Industry, Gyeongsang National University)
Choi, Byeong-Dae (Department of Seafood Science and Technology/Institute of Marine Industry, Gyeongsang National University)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.51, no.3, 2018 , pp. 221-229 More about this Journal
Abstract
Various types of dried laver Pyropia yezoensis have been produced in response to increasing demand and other laver goods manufactured using different processing methods are continuously being developed. The dried laver used in this experiment was initially heated at $165^{\circ}C$ for 3 seconds, followed by second heating at a high temperature ($340-350^{\circ}C$) to increase the storage period and enhance taste and flavor. Nutrient analysis of each sample heated under three conditions revealed that the protein and lipid contents were highest in samples from D company, while the carbohydrate contents remained relatively stable. After storage for 10 weeks at room temperature, changes in the composition were evaluated. The results showed decrease in protein (30%-49%) and essential amino acid contents. During storage, the major unsaturated fatty acids contained in dried laver slightly changed to 53.4%-56.0% in the form of EPA, while saturated fatty acids slightly increased to 18.4%-22.6% in the form of palmitic acid. The variables derived from fatty acid composition, such as atherogenic and thrombogenic, and hypocholesterolemic/hypercholesterolemic dietary indices, and polyunsaturated fatty acids/saturated fatty acids ratio, also indicated reasonable levels of stability. However, the laver should be consumed within 2 months.
Keywords
Dried-laver; Nutrient; Pigment; Heating process; Storage;
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Times Cited By KSCI : 5  (Citation Analysis)
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