Journal
INTERNATIONAL JOURNAL OF FOOD SCIENCES AND NUTRITION
Volume 65, Issue 3, Pages 299-305Publisher
TAYLOR & FRANCIS LTD
DOI: 10.3109/09637486.2013.854746
Keywords
Mineral bioaccessibility; nutraceutical food; protein quality; radical scavenging; red seaweeds
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Funding
- CAI + D [2009-PI-54-258]
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Proximate composition, fatty acids and amino acid profiles and nutritional (chemical score, protein digestibility, PDCAAS and mineral dialyzability) and antioxidant properties (TEAC, DPPH and power reduction) from Porphyra columbina were evaluated. Total dietary fiber (48.02 +/- 1.13 g/100 g dry weight) and protein (24.61 +/- 0.21 g/100 g dry weight) were the two most abundant components in this seaweed. The main saturated and unsaturated fatty acids were C16:0 and C20:5 (n=3), respectively. The limiting amino acid was tryptophan with a chemical score of 57%. Protein digestibility was 74.33 +/- 3.0%. Porphyra columbina has high mineral content with good Na/K relationship and medium value of potential mineral accessibility (P, Ca and Zn dializability: 18.75 +/- 0.01, 17.62 +/- 0.16 and 16.70 +/- 0.44, respectively). The highest antioxidant properties were obtained with an acetone/water extraction system. This work provides important information about chemical composition and nutraceutical new properties of P. columbina.
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