Abstract
Glycerol galactoside (GG; floridoside + isofloridoside) and porphyra-334 (P-334) are contained in nori (Susabinori Porphyra yezoensis and Asakusanori Porphyra tenera). Glycerol galactoside has been found to have bifidogenic growth stimulator activity and P-334 is known to have ultraviolet-absorbing activity in the UVA region of sunlight. These substances have, respectively, potential for application to pre-biotic foods and in cosmetics as a sunscren.. In the present study, to investigate the relationships between GG and P-334 contents and the quality of nori, we measured the GG and P-334 contents with other components (total protein, chlorophyll-a, β-carotene and phycobillins) that are related to the quality of nori samples produced from different production areas and with different qualities. We found that the GG content was closely negatively correlated with the contents of other components, whereas P-334 was positively correlated with the other components. From these results, it is suggested that low-quality nori is a potential source of GG, and as a source for P-334, scraps of nori produced during nori processing should be suitable.
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Ishihara, K., Oyamada, C., Sato, Y. et al. Relationships between quality parameters and content of glycerol galactoside and porphyra-334 in dried laver nori Porphyra yezoensis . Fish Sci 74, 167–173 (2008). https://doi.org/10.1111/j.1444-2906.2007.01506.x
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DOI: https://doi.org/10.1111/j.1444-2906.2007.01506.x