Chemical composition of cultivated seaweed Ulva clathrata (Roth) C. Agardh |
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Authors: | Alberto Peña-Rodríguez Thomas P Mawhinney Denis Ricque-Marie L Elizabeth Cruz-Suárez |
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Affiliation: | 1. Programa Maricultura, Universidad Autónoma de Nuevo León, Cd. Universitaria F-67, San Nicolás de los Garza, Nuevo León 66450, Mexico;2. AESCL Analytical Services, University of Missouri, Columbia, MO 65211, USA |
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Abstract: | Samples of cultivated Ulva clathrata were collected from a medium scale system (MSS, 1.5 × 1.5 m tank), or from a large scale system (LSS, 0.8 ha earthen pond). MSS samples were dried directly while the LSS sample was washed in freshwater and pressed before drying. Crude protein content ranged 20–26%, essential amino acids accounting for 32–36% of crude protein. The main analysed monosaccharides were rhamnose (36–40%), uronic acids (27–29%), xylose (10–13%) and glucose (10–16%). Some notable variations between MSS and LSS samples were observed for total dietary fibre (26% vs 41%), saturated fatty acids (31% vs 51%), PUFAS (33% vs 13%), carotenoids (358 vs 169 mg kg−1 dw) and for Ca (9 vs 19 g kg−1), Fe (0.6 vs 4.2 g kg−1), Cu (44 vs 14 mg kg−1), Zn (93 vs 17 mg kg−1) and As (2 vs 9 mg kg−1). The chemical composition of U. clathrata indicates that it has a good potential for its use in human and animal food. |
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Keywords: | Chlorophyta Ulva clathrata Cultivated Seaweed Crude protein Ash Dietary fibre Monosaccharides Amino acids Lipids Fatty acids PUFAs Carotenoids Minerals |
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