A stimuli-responsive and bioactive film based on blended polyvinyl alcohol and cashew gum polysaccharide

Silva, Fábio E. F.; Batista, Karla de Aleluia; Di-Medeiros, Maria C.B.; Silva, Cassio N.S.; Moreira, Bruna Rodrigues; Fernandes, Kátia Flávia

doi:10.1016/j.msec.2015.09.064

Cited by 39 publications

(23 citation statements)

References 28 publications

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“…For the determination of the swelling index, CGP/PVA films were cut into 1 cm 2 strips, weighted, immersed in 5 mL of different solutions and incubated at 25 °C. The swelling behavior was tested using the following solutions: (1) Ultrapure water (milli-Q); (2) 0.1 mol L −1 sodium acetate buffer pH 4.5; (3) 0.1 mol L −1 glycine buffer pH 9.5 [16,17].…”

Section: Methodsmentioning

confidence: 99%

“…All these films were prepared by changing the concentration and/or components in a minor proportion from a standard formulation. However, according to Silva et al [16], the main mechanism of reaction between the polymers in the CGP/PVA films involve the oxidized carbonyl groups in PVA and hydroxyl groups present in C2 and C3 of CGP mediated by sodium periodate [10]. These reactive groups are responsible for the formation of the linkages that will compose the network of the film.…”

Section: Introductionmentioning

confidence: 99%

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Use of Statistical Design Strategies to Produce Biodegradable and Eco-Friendly Films from Cashew Gum Polysaccharide and Polyvinyl Alcohol

et al. 2019

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This work reports the production and characterization of biodegradable and eco-friendly films based on cashew gum polysaccharide (CGP) and polyvinyl alcohol (PVA), using the statistical design strategy. Results show that CGP/PVA films are pH stimuli-responsive, allowing their use in a magnitude of biotechnological applications. The morphological and dimensional characterization evidences a positive influence of polymers in the dimensional properties. In addition, the microstructural analysis shows that films have different morphologies depending on the content of polymers and oxidant agent. On the other hand, the thickness and light transmission values are positively influenced by CGP and PVA and negatively influenced by NaIO4. Results from mechanical properties show that the traction force is positively influenced by NaIO4, while the elongation is only affected by the PVA concentration. In summary, considering the morphological, optical and mechanical properties of the CGP/PVA films it is possible to suggest their utilization in different fields as promising packaging materials or matrices for immobilization and/or encapsulation of biomolecules.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Use of Statistical Design Strategies to Produce Biodegradable and Eco-Friendly Films from Cashew Gum Polysaccharide and Polyvinyl Alcohol

et al. 2019

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“…Two stages of decomposition were observed, the main one at 252 o C. In this study, it was found that cashew gum and gum arabic have similar thermal behavior, so in terms of thermal stability, the gum arabic can be replaced by the cashew gum in various applications. Polyvinyl alcohol (PVA) Bioactive film for wound dressing aplication Moreira et al, 2015 [37] Polyvinyl alcohol (PVA) Stimuli-responsive and bioactive film Silva et al, 2016 [38] Polyvinyl alcohol (PVA) Film for fungal growth inhibition Silva et al, 2012 [39] Blends of Cashew gum with other polymers…”

Section: IIImentioning

confidence: 99%

“…Studies of cashew rubber blends with polyvinyl alcohol (PVA) have presented several applications in the formulation of films. Moreira et al (2015) [37] and Silva et al (2016) [38] produced bioactive films for use in dressings. Silva et al (2012) [39] studied a bioactive film inhibitor of fungal growth.…”

Section: Studies Of Cashew Gum Blendsmentioning

confidence: 99%

Cashew Tree Gum: A Scientific and Technological Review

Mothé¹,

Oliveira²,

Freitas³

et al. 2017

IJEAB

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“…In this sense, studies of the food industry have been directed to the achievement of technologies to improve the shelf life of fresh foods, including bioactive packaging development (Lopez-Rubio et al, 2006; Min et al, 2017), handling improvement in the processing chain, or addition of an agent able to promote the conservation and sanitization of foods during storage (López de Lacey et al, 2012; Olmedo et al, 2017). Several polysaccharides have been studied for the production of polymer matrices with applications in many areas of biotechnology, including cashew gum polysaccharide (CGP) (Moreira et al, 2015;Silva et al, 2012Silva et al, , 2016Silva et al, , 2010. Cashew gum polysaccharide (CGP) is a complex branched heteropolysaccharide present in the exudate of Anacardium occidentale tree.…”

Section: Introductionmentioning

confidence: 99%