Nutraceutical Potential of Five Mexican Brown Seaweeds

Figure 4

(a) ATR-FT-IR spectra of seaweed extract samples and polysaccharide standards: (A) Cystoceira osmundacea, (B) Silvetia compressa, (C) Pterygophora californica, (D) Egregia menziessi, (E) Ecklonia arborea, (F) sodium alginate, (G) laminarin, and (H) fucoidan. Numbers 1 to 7 in FTIR spectra indicate most characteristic bands. (b) ATR-FT-IR spectrum of experimental seaweed extracts, sodium alginate, laminarin, and fucoidan standards: C. osmundacea seaweed extract (black line); S. compressa seaweed extract (green line); P. californica seaweed extract (red line); E. menziesii seaweed extract (royal blue line); E. arborea seaweed extract (aqua line); sodium alginate standard (purple line); laminarin standard (yellow line); fucoidan standard (navy line).

(a)

(b)