Impact of drying on the sodium alginate obtained after polyphenols ultrasound-assisted extraction from Ascophyllum nodosum seaweeds

Montes, Leticia; Gisbert, Mauro; Hinojosa, Ignacio; Sineiro, Jorge; Moreira, Ramón

doi:10.1016/j.carbpol.2021.118455

Cited by 33 publications

(27 citation statements)

References 29 publications

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“…Commercial and lab-processed alginates were employed. Processed alginates from Ascophyllum nodosum seaweeds were obtained using a previously reported methodology (Montes et al, 2021), but drying temperature of seaweeds pellet was modified as follows: not dried (ND), dried at 50 • C (50D) and dried at 90 • C (90D). Furthermore, commercial sodium alginates from Sigma-Aldrich Chemical Company (S) (Lot MKCJ1280, St. Louis, MO, USA) and PanReac (P) (Lot 0F009964, Barcelone, Spain) were used as control (without knowledge of seaweeds source nor processing conditions).…”

Section: Methodsmentioning

confidence: 99%

“…Furthermore, commercial sodium alginates from Sigma-Aldrich Chemical Company (S) (Lot MKCJ1280, St. Louis, MO, USA) and PanReac (P) (Lot 0F009964, Barcelone, Spain) were used as control (without knowledge of seaweeds source nor processing conditions). Average viscosimetric molecular weights (M v , kg/mol), P (459 ± 8), S (156 ± 2), ND (428 ± 7), 50D (257 ± 1) and 90D (133 ± 1) of tested alginates were previously determined together with the corresponding average block length, mannuronate-guluronate ratio (Montes et al, 2021). The enzymes used were type VI-B α-amylase from porcine pancreas from Sigma-Aldrich Chemical Company (St. Louis, MO, USA) and amyloglucosidase from Novozymes (Bagsvaerd, Denmark).…”

Section: Methodsmentioning

confidence: 99%

“…Alginates have extense industrial uses, like as thickener, in the paper industry, dye in textile industry, and binder in food industry (Kour et al, 2022). Copolymer features (M/G ratio, average block length, etc) depend on natural source, and molecular size is influenced by the process conditions employed during extraction, drying, and isolation, among other operations where alginate depolymerization could be promoted (Montes et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Effect of the Addition of Different Sodium Alginates on Viscoelastic, Structural Features and Hydrolysis Kinetics of Corn Starch Gels

et al. 2021

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of the Addition of Different Sodium Alginates on Viscoelastic, Structural Features and Hydrolysis Kinetics of Corn Starch Gels

et al. 2021

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“…The alginate extraction process from wakame is based on the conversion of alginic acid from the cell wall into alginate salts [15,16]. Dried wakame, manufactured by Riken Food Co., Ltd. (Tokyo, Japan), was suspended in ethanol (20%) and stirred at room temperature for 45 min, and the residue was ltered.…”

Section: Preparation Of Wakame Extractsmentioning

confidence: 99%

Effects of Undaria pinnatifida (Wakame) on postprandial glycaemia: in vitro and in vivo studies

Mitamura

Yoshinaga²

2022

Preprint

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Brown seaweeds, such as Undaria pinnatifida (wakame), contain sodium alginate, which can affect postprandial blood glucose levels. We previously reported the effects of wakame on postprandial glycaemia in humans; however, the underlying mechanism remains unclear. We aimed to investigate the mechanism underlying the influence of ingested wakame on postprandial blood glucose levels. We conducted in vitro studies to determine the inhibitory activity of wakame on the glucose release rate and in vivo studies to determine the acute effects of wakame on postprandial blood glucose levels. The in vitro study was used to assess low-sodium wakame powder, low-sodium and low-fat wakame powder, soluble and insoluble fractions obtained from dried wakame, and commercially available sodium alginate. Glucose release rate was measured using an in vitro digestion model. The in vivo study was conducted using a crossover method, wherein healthy young adult participants were given 150 g of rice with or without wakame (2 g or 4 g dried wakame). The glucose release rates of all wakame extracts and sodium alginate were significantly lower than that of the control. The soluble fraction significantly inhibited the release of glucose. In the in vivo study, blood glucose levels 15 min after ingestion were significantly lower after consuming rice with 2 g of wakame than when consuming rice alone. Moreover, the ingestion of 4 g of wakame resulted in significantly lower blood glucose levels after meal consumption. These results suggest that the highly viscous soluble fraction of wakame, which contains sodium alginate, increases the viscosity of the gastrointestinal contents and delays glucose absorption. (UMIN000047854)

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“…The alginate extraction process from wakame is based on the conversion of alginic acid from the cell wall into alginate salts [17,18]. Dried wakame, manufactured by Riken Food Co., Ltd. (Tokyo, Japan), was suspended in ethanol (20% w/w) and stirred at room temperature for 45 min, and the residue was ltered.…”

Section: Preparation Of Wakame Extractsmentioning

confidence: 99%

Effects of Undaria pinnatifida (Wakame) on postprandial glycaemia: in vitro and in vivo studies

Mitamura

Yoshinaga²

2022

Preprint

View full text Add to dashboard Cite

Brown seaweeds, such as Undaria pinnatifida (wakame), contain sodium alginate, which can affect postprandial blood glucose levels. We previously reported the effects of wakame on postprandial glycaemia in humans; however, the underlying mechanism remains unclear. We aimed to investigate the mechanism underlying the influence of ingested wakame on postprandial blood glucose levels. Glucose release rate of wakame extracts was measured using an in vitro cell-free digestion model. The in vivo study was conducted using a crossover method, wherein healthy young adult participants were given 150 g of rice with or without wakame (2 g or 4 g dried wakame). The glucose release rates of all wakame extracts were significantly lower than that of the control. The soluble fraction significantly inhibited the release of glucose. In the in vivo study, blood glucose levels 15 min after ingestion were significantly lower after consuming rice with 2 g of wakame than when consuming rice alone. Moreover, the ingestion of 4 g of wakame resulted in significantly lower blood glucose levels after meal consumption. These results suggest that the highly viscous soluble fraction of wakame might increases the viscosity of the gastrointestinal contents and delays glucose absorption.

show abstract

Impact of drying on the sodium alginate obtained after polyphenols ultrasound-assisted extraction from Ascophyllum nodosum seaweeds

Cited by 33 publications

References 29 publications

Effect of the Addition of Different Sodium Alginates on Viscoelastic, Structural Features and Hydrolysis Kinetics of Corn Starch Gels

Effect of the Addition of Different Sodium Alginates on Viscoelastic, Structural Features and Hydrolysis Kinetics of Corn Starch Gels

Effects of Undaria pinnatifida (Wakame) on postprandial glycaemia: in vitro and in vivo studies

Effects of Undaria pinnatifida (Wakame) on postprandial glycaemia: in vitro and in vivo studies

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