Abstract
Samples of cultivated Ulva clathrata were collected from a medium scale system (MSS, 1.5×1.5m tank), or from a large scale system (LSS, 0.8ha 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 169mgkg−1dw) and for Ca (9 vs 19gkg−1), Fe (0.6 vs 4.2gkg−1), Cu (44 vs 14mgkg−1), Zn (93 vs 17mgkg−1) and As (2 vs 9mgkg−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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