Abstract
Sensory analyses were conducted to determine levels of consumer acceptability of Porphyra yezoensis, P. umbilicalis, and P. amplissima to select appropriate species for aquaculture development in Maine (USA). The subjects included children (n = 67) and adults (n = 84); the children participated in study design by helping to select the 9 point hedonic scale used in the affective sensory tests. Two substrates were used; Porphyra was baked in crackers and also used as a coating for popcorn. No significant differences (p > 0.5) in acceptability of one species over another were observed in either trial, which suggests that native Atlantic species of Porphyra such as P. amplissima and P. umbilicalis have developmental potential in foods for North American consumers. Fatty acids were analyzed in the taste test material and in freshly collected P. umbilicalis; eicosapentaenoic acid [EPA; 20:5 (n-3)] and palmitic acid were the most common fatty acids. Quantitative analysis of EPA determined that freshly collected (January 2005) P. umbilicalis contained 3.2 mg EPA g dry wt−1 (74 mg EPA 100 g fresh wt−1). This concentration is not high enough to make P. umbilicalis a primary source of daily omega-3 fatty acids, but the favorable n-3/n-6 ratio (2-3:1) in these species contributes to their nutritional value.
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Blouin, N., Calder, B.L., Perkins, B. et al. Sensory and fatty acid analyses of two Atlantic species of Porphyra (Rhodophyta). J Appl Phycol 18, 79–85 (2006). https://doi.org/10.1007/s10811-005-9017-3
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DOI: https://doi.org/10.1007/s10811-005-9017-3