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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.
Palabras Clave: Glucose diffusion. α-Glucosidase. Glycemia control. Seaweed extracts.
Cristina Casals-vázquez , Ernesto Suárez-cadenas , Francisca María Estébanez Carvajal , María Pilar Aguilar Trujillo , María M. Jiménez Arcos , María Ángeles Vázquez Sáchez
Cristina Casals , José Luis Casals Sánchez , Ernesto Suárez Cadenas , María Pilar Aguilar-trujillo , Francisca María Estébanez Carvajal , María Ángeles Vázquez-sánchez
Irving Sosa-Crespo , Hugo Laviada Molina , Luis Chel Guerrero , Rolffy Ortiz Andrade , David Betancur Ancona
Hillary Kimberly Osorio Landa , Iván Pérez Díaz , Sara del Carmen Laguna Bárcenas , Juan Manuel López Navarro , María Fernanda Abella Roa , Mariel Corral Orozco , Juan Pablo Mancilla Ortega , Diana Alheli Martínez Duarte , Susana Isabel Morales Montalvo , Sebastián Múzquiz Aguirre , Elizabet Sánchez Landa
Carlos Henrique Ribeiro Lima , Layanne Cristina de Carvalho Lavôr Layanne , Nadir do Nascimento Nogueira , Gilmara Péres Rodrigues , Karoline de Macêdo Gonçalves Frota , Nayra do Socorro Caldas Carvalho de Almeida Teixeira , Iara Katrynne Fonsêca Oliveira , Adriana de Azevedo Paiva
Pilar Calmarza , Rasha Isabel Pérez Ajami , Carlos Prieto López , Clara Berrozpe-Villabona , Daniel Talal Pérez Ajami , María Inmaculada Molina Botella , Gracia María Lou Francés , Alejandro Sanz Paris
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