The brown seaweed Cystoseira schiffneri as a source of sodium alginate: Chemical and structural characterization, and antioxidant activities

Benslima, Abdelkarim; Sellimi, Sabrine; Hamdi, Marwa; Nasri, Rim; Jridi, Mourad; Cot, Didier; Li, Suming; Nasri, Monçef; Zouari, Nacim

doi:10.1016/j.fbio.2020.100873

Cited by 38 publications

(23 citation statements)

References 51 publications

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“…The protein content did not significantly vary among samples. On the other hand, the ash content results agreed with available literature in which an ~30 % ash was found in alginate extracts from C. schiffneri (Benslima et al, 2021). Polyphenols and proteins (5.9 mg/g) are also present in minor quantities in commercial food-grade sodium alginates (Dusseault et al, 2006).…”

Section: Extraction Yield and Composition Of The Alginate Extractssupporting

confidence: 88%

Structural and functional properties of alginate obtained by means of high hydrostatic pressure-assisted extraction

Bojorges

Martínez‐Abad²,

Martínez‐Sanz³

et al. 2023

Carbohydrate Polymers

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Section: Extraction Yield and Composition Of The Alginate Extractssupporting

confidence: 88%

Structural and functional properties of alginate obtained by means of high hydrostatic pressure-assisted extraction

Bojorges

Martínez‐Abad²,

Martínez‐Sanz³

et al. 2023

Carbohydrate Polymers

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“…The compound has also been studied for its antioxidant properties and has moderate antioxidant activity and strong protective activity against DNA breakage. Therefore, this alginate could be used as a natural substance in the food or pharmaceutical industries [ 37 ]. Alginate is very useful to encapsulate some strains of live cell of probiotics in both intestinal tract and food products [ 86 ].…”

Section: Applicationsmentioning

confidence: 99%

Structures, Properties and Applications of Alginates

et al. 2022

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Alginate is a hydrocolloid from algae, specifically brown algae, which is a group that includes many of the seaweeds, like kelps and an extracellular polymer of some bacteria. Sodium alginate is one of the best-known members of the hydrogel group. The hydrogel is a water-swollen and cross-linked polymeric network produced by the simple reaction of one or more monomers. It has a linear (unbranched) structure based on d-mannuronic and l-guluronic acids. The placement of these monomers depending on the source of its production is alternating, sequential and random. The same arrangement of monomers can affect the physical and chemical properties of this polysaccharide. This polyuronide has a wide range of applications in various industries including the food industry, medicine, tissue engineering, wastewater treatment, the pharmaceutical industry and fuel. It is generally recognized as safe when used in accordance with good manufacturing or feeding practice. This review discusses its application in addition to its structural, physical, and chemical properties.

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“…The abundance of stabilization elements such as carotenoids in marine resources [ 29 ], bioactive compounds such as catechins [ 41 ], and seaweed phenolic antioxidants [ 42 ] are significant indications for potential uses of seaweed in anti-ageing products. Brown seaweeds are sources of alginate-based compositions available for protective applications [ 43 , 44 , 45 ]. The variety of preparation procedures starting from macroalgae [ 46 , 47 , 48 , 49 ] is an open door for the usage of alginates as efficient protectors against oxidation in polymer composites [ 28 , 50 , 51 ].…”

Section: Introductionmentioning

confidence: 99%

Stabilization Activity of Kelp Extract in Ethylene–Propylene Rubber as Safe Packaging Material

Zaharescu¹

2023

Polymers

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This paper presents the stabilization effects of the solid extract of kelp (Ascophyllum nodosum) on an engineering elastomer, ethylene–propylene copolymer (EPR), which may be used as packaging material. Progressive increase in additive loadings (0.5, 1, and 2 phr) increases the oxidation induction time for thermally aged rubber at 190 °C from 10 min to 30 min for pristine material and modified polymer by adding 2 phr protection powder. When the studied polymer is γ-irradiated at 50 and 100 kGy, the onset oxidation temperatures increase as a result of blocking the oxidation reactivity of free radicals. The stabilization effect occurs through the activity of alginic acid, which is one of the main active components associated with alginates. The accelerated degradation caused by γ-exposure advances more slowly when the kelp extract is present. The OOT value for the oxidation of EPR samples increases from 130 °C to 165 °C after the γ-irradiation of pristine and modified (2 phr of kelp powder) EPR, respectively. The altered oxidation state of EPR samples by the action of γ-rays in saline serum is faster in neat polymer than in stabilized material. When the probes are placed in physiological serum and irradiated at 25 kGy, the OOT value for neat EPR (145 °C) is much lower than the homologous value for the polymer samples protected by kelp extract (153 °C for the concentration of 0.5 phr, 166 °C for the concentration of 1 phr, and 185 °C for the concentration of 2 phr).

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The brown seaweed Cystoseira schiffneri as a source of sodium alginate: Chemical and structural characterization, and antioxidant activities

Cited by 38 publications

References 51 publications

Structural and functional properties of alginate obtained by means of high hydrostatic pressure-assisted extraction

Structural and functional properties of alginate obtained by means of high hydrostatic pressure-assisted extraction

Structures, Properties and Applications of Alginates

Stabilization Activity of Kelp Extract in Ethylene–Propylene Rubber as Safe Packaging Material

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