Development and characterization of edible films from mixtures of κ-carrageenan, ι-carrageenan, and alginate

Paula, Gabriela Almeida de; Benevídes, Norma Maria Barros; Cunha, Arcelina Pacheco; Oliveira, Ana Vitória de; Pinto, Alaídes M.B.; Morais, J. P. S.; Azeredo, Henriette Monteiro Cordeiro de

doi:10.1016/j.foodhyd.2015.01.004

Cited by 146 publications

(85 citation statements)

References 32 publications

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“…When forming alginate gels, two adjacent, diaxially linked guluronic residues (G) form a cavity that acts as a binding site for calcium ions ( Figure 2). As a result, the gel characteristics and properties can be improved [18,20,21]. Nevertheless, the alginate gel may dissociate in the presence of acids, although it can be stable from 0-100°C [2].…”

Section: Alginatementioning

confidence: 99%

“…Furthermore, other hydrocolloids in matrices mixed with seaweed can form homogenous composite films, for instance carrageenan-alginate blend films. Kappa-carrageenan and alginate resulted in an interesting blend film, in which kappacarrageenan improved the moisture barrier and tensile properties of the alginate film [21]. Recent studies have focused on the application of degradable films to food surfaces to prevent the diffusion of preservative into food and inhibit surface microbial growth (Table 4).…”

Section: Grapefruit Seed Extract (Gse)/glycerolmentioning

confidence: 99%

“…alginate, carrageenan and agar) instead of its original form for biodegradable film production. This is due to seaweed derivatives have better transparency, mechanical and water vapor barrier properties than the original form of sea-weed [21,54,69,109]. Therefore, seaweed derivatives have been widely used in high end medical and electrical applications such as polymer electrolytes, wound dressings, scaffolds, hydrogel for cell and drug delivery, biomedical and pharmaceutical devices as well as softgel capsules [93, 96-97, 99, 102, 103, 105].…”

Section: Future Development Of Seaweed/cellulose Composite Filmmentioning

confidence: 99%

See 2 more Smart Citations

Biodegradable polymer films from seaweed polysaccharides: A review on cellulose as a reinforcement material

Khalil¹,

Tye²,

Saurabh³

et al. 2017

Express Polym. Lett.

182

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Section: Alginatementioning

confidence: 99%

Section: Grapefruit Seed Extract (Gse)/glycerolmentioning

confidence: 99%

Section: Future Development Of Seaweed/cellulose Composite Filmmentioning

confidence: 99%

See 1 more Smart Citation

Biodegradable polymer films from seaweed polysaccharides: A review on cellulose as a reinforcement material

Khalil¹,

Tye²,

Saurabh³

et al. 2017

Express Polym. Lett.

182

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“…The most frequently studied seaweed films are prepared from the seaweed-derived polymers such as alginate, carrageenan, and agar. Films developed from such biopolymers exhibit excellent transparency, mechanical strength, and water vapor barrier properties (Rojas-Graü et al 2007;Rhim 2012;Paula et al 2015;Siah et al 2015). However, the production of seaweed-derived polymers is neither economically feasible nor environmentally friendly due to high chemical and energy consumption during the seaweed hydrocolloid extraction process.…”

Section: Introductionmentioning

confidence: 99%

Oil Palm Shell Nanofiller in Seaweed-based Composite Film: Mechanical, Physical, and Morphological Properties

et al. 2017

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Composite films that utilize seaweed as a matrix and oil palm shell (OPS) nanoparticles as a reinforcing material were developed. The effects of loading OPS nanoparticle (0%, 1%, 5%, 10%, 20%, and 30%) into seaweed films were determined by analyzing the physical, mechanical, and morphological properties of the films. The seaweedbased film incorporated with OPS nanoparticles at a high concentration (20% w/w) achieved the highest tensile strength (44.8 MPa) and Young's Modulus (3.13 GPa). However, the film's hydrophobicity (contact angle = 47.3º) and percentage of elongation at break (2.10%) were reduced. Moreover, it was observed that excessive loading of nanofillers (> 20%) reduced the tensile strength and hydrophilicity of the film. This phenomenon was attributed to the agglomeration of OPS nanoparticles and the formation of large voids on the film surface. Thus, the relative effectiveness of the various tested nanofiller contents in enhancing the mechanical strength of the composite film were found to be ranked in the following order: 20%, 10%, 5%, 30%, and 1%.

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“…In Brazil, a wide diversity of marine life (e.g., cucumbers, fishes and seaweeds) is distributed along the more than 8000 Km of coastline, revealing many biologically active metabolites (e.g., polysaccharides, proteins and carotenoids) which have already been isolated and studied as anticancer (Costa-Lotufo et al, 2006), anticoagulant, antithrombotic (Mourão et al, 2001;Fonseca et al, 2008;Rodrigues et al, 2012a) and anti-inflammatory (Pomin, 2012;Fernandes, Oliveira, & Valetin, 2014) agents, and as ingredients for food preparations (e.g., polysaccharides-based edible films) (Fenoradosoa et al, 2009;Paula et al, 2015). As a result, in the last decades, various classes of marine organisms-derived polymers with healthy-related benefits have been well-documented by different Brazilian groups (Costa-Lotufo et al, 2006;Fernandes et al, 2014;Mourão, 2015).…”

Section: Introductionmentioning

confidence: 99%

<b>Extraction, physical-chemical characterization and <i>in vitro</i> inhibitory potential of thrombin generation of crude sulfated polysaccharides from Brazilian tropical seaweeds

Rodrigues

Barcellos

Glauser

et al. 2018

Acta Sci. Biol. Sci.

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ABSTRACT. The biotechnological value of macroalgae for screening assays of thrombin generation-TG using sulfated polysaccharides-SPs as substitutes to heparin has been poorly explored. Five Brazilian species of macroalgae (Gracilaria birdiae, Acanthophora muscoides, Halymenia sp., Caulerpa cupressoides and C. racemosa) were analyzed and compared for their abundance, physical-chemical characteristics and in vitro anticoagulant assays of activated partial thromboplastin time-APTT, prothrombin time-PT and TG. Papain extraction yielded (p < 0.001) from 0.66±0.03% (C. racemosa) to 41.60±1.10% (Halymenia sp.) of crude SPs varying sulfate (8.41-42.60%) and total sugars (47.80-70.53%). Crude SPs showed difference in mobility and resolution pattern by agarose electrophoresis, while polyacrylamide analysis revealed SPs of > 100 kDa. These procedures, combined with the use of Stains-All, also indicated nonSPs. APTTs ranged from 2.81 (A. muscoides) to 21.30 IU (Halymenia sp.) vs. heparin (193 IU), and were dependent on sulfation of the crude SPs. PT was not altered. With respect to TG assay, crude SPs modified concentration-dependent and independently from molecular mass TG by both intrinsic/extrinsic pathways in 60-fold diluted human plasma, with total intrinsic inactivation using crude SPs from A. muscoides in parallel to heparin (p < 0.05). Thrombosis in vitro is differentially modulated by distinct crude SPs from Brazilian seaweeds.Keywords: marine algae; polyglycans; coagulation tests; thrombin.Extração, caracterização físico-química e potencial inibitório in vitro da geração de trombina de polissacarídeos sulfatados brutos de algas marinhas tropicais brasileiras RESUMO. O valor biotecnológico das macroalgas para ensaios de varredura de geração de trombina-GT pouco tem sido explorado usando polissacarídeos sulfatados-PSs como substitutos à heparina. Foram analisadas e comparadas cinco espécies brasileiras de macroalgas (Gracilaria birdiae, Acanthophora muscoides, Halymenia sp., Caulerpa cupressoides e C. racemosa) quanto à abundância, às características físico-químicas e os ensaios anticoagulantes in vitro de tempo de tromboplastina parcial ativada-TTPA, ao tempo de protrombina-TP e a GT. A extração com papaína rendeu (p < 0,001) de 0,66±0,03% (C. racemosa) a 41,60±1,10% (Halymenia sp.) de PSs brutos variando sulfato (8,41-42,60%) e açúcares totais (47,80-70,53%). Os PSs brutos mostraram diferenças na mobilidade e resolução por eletroforese em agarose, enquanto pela análise em poliacrilamida revelou PSs brutos de >100 kDa. Esses procedimentos, combinados ao uso de azul de toluidina/Stains-All, indicaram também polissacarídeos-não sulfatados. Os TTPAs foram dependentes da sulfatação dos PSs brutos e variaram de 2,81 (A. muscoides) a 21,30 UI (Halymenia sp.) vs. heparina (193 UI). O TP não foi alterado. Com respeito ao ensaio de GT, os PSs brutos modificaram, dependente de concentração e independentemente de massa molecular, GT pelas vias intrínseca/extrínseca no plasma humano diluído 60 vezes, com inativação intrínseca ...

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Development and characterization of edible films from mixtures of κ-carrageenan, ι-carrageenan, and alginate

Cited by 146 publications

References 32 publications

Biodegradable polymer films from seaweed polysaccharides: A review on cellulose as a reinforcement material

Biodegradable polymer films from seaweed polysaccharides: A review on cellulose as a reinforcement material

Oil Palm Shell Nanofiller in Seaweed-based Composite Film: Mechanical, Physical, and Morphological Properties

<b>Extraction, physical-chemical characterization and <i>in vitro</i> inhibitory potential of thrombin generation of crude sulfated polysaccharides from Brazilian tropical seaweeds

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