2024-03-28T12:49:34Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1031942018-12-03T12:42:06Zcom_10261_70com_10261_2col_10261_323
Effects of Undaria pinnatifida, Himanthalia elongata and Porphyra umbilicalis extracts on in vitro α-glucosidase activity and glucose diffusion | Efectos de extractos de Undaria pinnatifida, Himantalia elongata y porfira umbilicalis sobre la actividad α-glucosidasa y la difusion de la glucosa in vitro
Moreira, A.
Garcimartín, Alba
Bastida, Sara
Jiménez Escrig, Antonio
Rupérez Antón, Pilar
Green, B.
Rafferty, E
Sánchez-Muniz, F. J.
Benedí, Juana
Background: Seaweeds are good sources of dietary fibre, which can influence glucose uptake and glycemic control. Objective: To investigate and compare the in vitro inhibitory activity of different extracts from Undaria pinnatifida (Wakame), Himanthalia elongata (Sea spaghetti) and Porphyra umbilicalis (Nori) on α-glucosidase activity and glucose diffusion. Methods: The in vitro effects Chloroform-, ethanol- and water-soluble extracts of the three algae were assayed on α- glucosidase activity and glucose diffusion through membrane. Principal Components Analysis (PCA) was applied to identify patterns in the data and to discriminate which extract will show the most proper effect. Results: Only water extracts of Sea spaghetti possessed significant in vitro inhibitory effects on α-glucosidase activity (26.2% less mmol/L glucose production than control, p < 0.05) at 75 min. PCA distinguished Sea spaghetti effects, supporting that soluble fibre and polyphenols were involved. After 6 h, Ethanol-Sea spaghetti and water-Wakame extracts exerted the highest inhibitory effects on glucose diffusion (65.0% and 60.2% vs control, respectively). This extracts displayed the lowest slopes for glucose diffusion-time lineal adjustments (68.2% and 62.8% vs control, respectively). Conclusions: The seaweed hypoglycemic effects appear multi-faceted and not necessarily concatenated. According to present results, ethanol and water extracts of Sea spaghetti, and water extracts of Wakame could be useful for the development of functional foods with specific hypoglycemic properties.
Peer Reviewed
2014-10-13T07:13:13Z
2014-10-13T07:13:13Z
2014
2014-10-13T07:13:13Z
artículo
http://purl.org/coar/resource_type/c_6501
doi: 10.3305/nh.2014.29.6.7381
issn: 1699-5198
Nutricion Hospitalaria 29: 1434- 1446 (2014)
http://hdl.handle.net/10261/103194
10.3305/nh.2014.29.6.7381
none
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