Table 1. Identified seven monosaccharides of chromatographical and their mass spectrometric data from the fucoidan of S. horeneri

Peak#	t_R(min)	λ_max(nm)	ESI(+)-TOF/MS result					Identification
Peak#	t_R(min)	λ_max(nm)	Ion	Meas. mass (m/z)	Theor. mass(m/z)	Error(mDa)	Predicted formula(bis PMP-sugars)	Compound	M.F.
1	11.10	247	[M+H]⁺[M+K]⁺	511.2152549.1693	511.2187549.1746	-3.5-5.3	C₂₆H₃₀N₄O₇	Mannose	C₆H₁₂O₆
2	14.11	246	[M+H]⁺	495.2192	495.2238	-4.6	C₂₆H₃₀N₄O₆	Rhmnose	C₆H₁₂O₅
3	16.29	246	[M+H]⁺	525.1935	525.1980	-4.5	C₂₆H₂₈N₄O₈	Glucuronic acid	C₆H₁₀O₇
4	20.64	247	[M+H]⁺[M+K]⁺	511.2125549.1693	511.2187549.1746	-6.2-5.3	C₂₆H₃₀N₄O₇	Glucose	C₆H₁₂O₆
5	22.07	247	[M+H]⁺[M+K]⁺	511.2169549.1683	211.2187549.1746	-1.8-6.3	C₂₆H₃₀N₄O₇	Galactose	C₆H₁₂O₆
6	24.79	247	[M+H]⁺[M+K]⁺	481.2035519.1587	481.2082519.1640	-4.7-5.3	C₂₅H₂₈N₄O₆	Xylose	C₅H₁₀O₅
7	29.78	247	[M+H]⁺	495.2199	495.2238	-3.9	C₂₆H₃₀N₄O₆	Fucose	C₆H₁₂O₅