Identification of selected seaweed polysaccharides (phycocolloids) by vibrational spectroscopy (FTIR-ATR and FT-Raman)

Abstract

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Optimization of the extraction of carrageenan from Kappaphycus alvarezii using response surface methodology

“…840-850 cm -1 (attributed to D-galactose-4-sulfate). Peaks were also observed at 925-935 cm -1 in all samples (3,6-anhydro-Dgalactose) (PEREIRA et al, 2009;PRADO-FERNÁNDEZ et al, 2003). Figure 2 shows the 1 H NMR spectrum of native carrageenan extracted from K. alvarezii.…”

“…Several authors have used infrared spectroscopy (IR) to characterize and differentiate carrageenans κ, ι, and λ (HILLIOU et al, 2006;MENDOZA et al, 2006;PEREIRA et al, 2009;PRADO-FERNÁNDEZ et al, 2003;ROCHAS;LAHAYE;YAPHE, 1986). Figure 1a-c shows the FTIR spectra of native carrageenan and the carrageenan references for commercial and κ-carrageenan, respectively.…”

Characterization of polysaccharides from Hypnea spinella (Gigartinales) and Halopithys incurva (Ceramiales) and their effect on RAW 264.7 macrophage activity

“…The broad stretching peak around 3,384 cm −1 is characteristic of the hydroxyl group, while the weak stretching band at 2,930 cm −1 suggests C-H bonds. In contrast, the peak at 2,069 cm −1 has been shown to indicate the presence of aliphatic C-H bonds (Pereira et al 2009). The peak at around 1,642 cm −1 and the peaks near 1,013.29-1,153.67 cm −1 suggest the presence of the C-O group.…”

Analysis by Vibrational Spectroscopy of Seaweed Polysaccharides with Potential Use in Food, Pharmaceutical, and Cosmetic Industries

“…Members of the red algae (Rhodophyta) produce galactans (e.g., carrageenans and agars) and the brown algae (Heterokontophyta, Phaeophyceae) produce uronates (alginates) and other sulphated polysaccharides (e.g., fucoidan and laminaran) [2][3][4][5][6][7][8].…”