Chemical composition of cultivated seaweed Ulva clathrata (Roth) C. Agardh

Alberto Peña-Rodríguez; Thomas P Mawhinney; Denis Ricque-Marie; L Elizabeth Cruz-Suárez

doi:10.1016/j.foodchem.2011.04.104

Chemical composition of cultivated seaweed Ulva clathrata (Roth) C. Agardh

Food Chem. 2011 Nov 15;129(2):491-498. doi: 10.1016/j.foodchem.2011.04.104. Epub 2011 May 7.

Authors

Alberto Peña-Rodríguez¹, Thomas P Mawhinney², Denis Ricque-Marie¹, L Elizabeth Cruz-Suárez³

Affiliations

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.
³ Programa Maricultura, Universidad Autónoma de Nuevo León, Cd. Universitaria F-67, San Nicolás de los Garza, Nuevo León 66450, Mexico. Electronic address: lucia.cruzsr@uanl.edu.mx.

PMID: 30634256
DOI: 10.1016/j.foodchem.2011.04.104

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.

Keywords: Amino acids; Ash; Carotenoids; Chlorophyta; Crude protein; Cultivated; Dietary fibre; Fatty acids; Lipids; Minerals; Monosaccharides; PUFAs; Seaweed; Ulva clathrata.