RT Journal Article
T1 Chemical structure and molecular weight inﬂuence the in vitro fermentability of polysaccharide extracts from the edible seaweeds Himathalia elongata and Gigartina pistillata
A1 Mateos-Aparicio Cediel, Inmaculada
A1 Martera, Giulia
A1 Goñi Cambrodón, Isabel
A1 Villanueva Suárez, María José
A1 Redondo Cuenca, Araceli
AB Polysaccharides from the brown seaweed Himanthalia elongata and the red one Gigartina pistillata have been extracted by sequential fractionation based on the solubility in water (F-H2O), hydrochloride acid (F-HCl) and potassium hydroxide (F-KOH), remaining a residue (RES). Their structures have been studied through Fourier- transform infrared spectroscopy (FTIR) and molecular weight by molecular exclusion (HPSEC). Sugar composition and sulphate content were also determined. F-H2O and F-HCl from Himanthalia elongata were rich in fucoidans with an estimated Mw of 926 and 430 × 103 g/mol. Laminarans appeared in the mentioned fractions and possibly xylofucoglycuronans and xylomannans are in F-H2O. F-HCl was poorly fermented with low pro- duction of total short chain fatty acids (SCFA) and two poor or non-fermentable low-molecular weight poly-uronans (68 and 4 × 103 g/mol) appeared in F-KOH. Carrageenans extracted from Gigartina pistillata presented low or non-fermentability. Xylofucoglycuronans and xylomannans, possibly presented in RES and F-H2O from Himathalia, and laminarans in the last mentioned fraction, seem to be more fermentable. Carragenophytes red seaweeds do not seem to be fermentable whereas brown algae could have major potential fermentability, probably due to the presence of laminarans, xylofucoglycuronans and/or xylomannans.
PB Elsevier
SN 0268-005X
YR 2018
FD 2018
LK https://hdl.handle.net/20.500.14352/92822
UL https://hdl.handle.net/20.500.14352/92822
LA eng
NO Mateos-Aparicio I, Martera G, Goñi I, Villanueva-Suárez MJ, Redondo-Cuenca A. Chemical structure and molecular weight inﬂuence the in vitro fermentability of polysaccharide extracts from the edible seaweeds Himathalia elongata and Gigartina pistillata. Food Hydrocolloids. 2018 83:348-54.
NO European Commission 
DS Docta Complutense
RD 19 abr 2025