The
nutritional value of C. racemosa was higher than
C. lentillifera for both polyunsaturated fatty acids (10.6 vs.
5.3 mg g−1 DW) and pigments (9.4 vs. 4.2 mg g−1 DW). The
content of eicosapentaenoic acid (EPA) and β-carotene decreased
with increasing frond size in both species. Trace
element contents also varied substantially between the species,
including higher levels of zinc, magnesium and strontium
in C. lentillifera , and higher levels of selenium in
C. racemosa