Extraction and characterization of polysaccharide films prepared from Furcellaria lumbricalis and Gigartina skottsbergii seaweeds

Simkovic, I; Gucmann, Filip; Mendichi, Raniero; Schieroni, Alberto Giacometti; Piovani, Daniele; Dobročka, Edmund; Hricovı́ni, Miloš

doi:10.1007/s10570-021-04138-5

Cited by 13 publications

(12 citation statements)

References 42 publications

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“…The neat SSPS film showed two prominent peaks at 2θ values of 14.2 and 20.5°, which indicate the existence of short-range local ordered and amorphous structures, respectively. The amorphous nature of CG has been ascertained by many previous studies. , No noticeable difference was observed in the XRD patterns of neat SSPS and SSPS/CG blend films. The XRD pattern of the SSPS/CG/AgNP nanocomposite film exhibited only one broad peak at 2θ of approximately 20.5°, which confirms its amorphous structure.…”

Section: Resultsmentioning

confidence: 71%

“…The amorphous nature of CG has been ascertained by many previous studies. 34,35 No noticeable difference was observed in the XRD patterns of neat SSPS and SSPS/CG blend films. The XRD pattern of the SSPS/CG/ AgNP nanocomposite film exhibited only one broad peak at 2θ of approximately 20.5°, which confirms its amorphous structure.…”

Section: Water Vapor Permeabilitymentioning

confidence: 96%

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Soluble Soybean Polysaccharide/Carrageenan Antibacterial Nanocomposite Films Containing Green Synthesized Silver Nanoparticles

Liu

Dong

et al. 2022

ACS Appl. Polym. Mater.

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This study aimed to develop nanocomposite films based on a soluble soybean polysaccharide (SSPS), carrageenan (CG), and green synthesized silver nanoparticles (AgNPs) by a solution casting technique. AgNPs were obtained by reducing a silver−ammonia complex using a SSPS as both a stabilizing and reducing agent, which was confirmed by UV−vis spectroscopy, Xray diffraction (XRD), transmission electron microscopy, and X-ray photoelectron spectroscopy. CG was introduced into the SSPS/ AgNP matrix as a reinforcing component to strengthen the nanocomposite films. The results indicate that the addition of CG led to significantly enhanced mechanical properties, thermal stability, and water resistance of the films. The XRD and Fourier transform infrared spectroscopy results reveal strong interactions between AgNPs and polysaccharide chains. Compared with the SSPS/CG films without AgNPs, the SSPS/CG/AgNP nanocomposite films exhibited antibacterial activity against Escherichia coli and Staphylococcus aureus. The results suggest that the SSPS/CG/AgNP antibacterial nanocomposite films have great potential in food and pharmaceutical packaging applications.

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Section: Resultsmentioning

confidence: 71%

Section: Water Vapor Permeabilitymentioning

confidence: 96%

Soluble Soybean Polysaccharide/Carrageenan Antibacterial Nanocomposite Films Containing Green Synthesized Silver Nanoparticles

Liu

Dong

et al. 2022

ACS Appl. Polym. Mater.

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“…As expected, the extraction yields were higher than the 30% attained with water at room temperature [ 22 ], 50% with water at 90 °C during 3 h in two stages [ 34 ], 50–55% by ultrasound-assisted treatment at 150 W and 90 °C during 15 min [ 35 ], or the 68% with water extraction at 100 °C for 24 h and the 42% during an ultrasonic-assisted water extraction (75 W, 20 kHz, 60 min) [ 24 ]. Short treatment times have been reported for microwave-assisted extraction and hydrolysis treatments to produce bioactive oligosaccharides.…”

Section: Discussionmentioning

confidence: 99%

“…Microwave-assisted pressurized hot water extraction has been useful with seaweeds containing predominant structures of kappa carrageenan and hybrid mixtures of kappa/iota [ 11 , 12 , 13 , 15 ]. Other seaweeds contain a wide variety of carrageenan types; Sarcopeltis ( ex Gigartina ) skottsbergii has been reported to contain mainly κ-carrageenan, with significant amounts of ι- and ν-carrageenan [ 22 ], or a mixture α-, β-, ι-, κ-, and ξ- [ 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Microwave-Assisted Extraction of Carrageenan from Sarcopeltis skottsbergii

et al. 2023

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The development of greener processes for the sustainable utilization of raw materials is increasingly demanded for environmental and economic reasons. A rapid and chemical-free technique was proposed for the extraction of hybrid kappa/iota (6/4) carrageenan from Sarcopeltis (ex Gigartina) skottsbergii. After separation, carrageenans were analyzed by Fourier transform infrared attenuated total reflectance, high-performance size-exclusion chromatography, and rheology. Maximum carrageenan extraction yields up to 63–64% were obtained operating at 110 or at 160 °C, for 5–7 min considering the sum of the heating and cooling periods, but the extraction of the phenolic fraction was favored at 220 °C. The recovered carrageenan showed apparent viscous values around 103 mPa at the lowest tested shear rates (0.1 1/s) and could be suitable to formulate films. Furthermore, those carrageenans obtained under 140 °C showed gel characteristics without previous separation from the liquid extract, avoiding ethanolic precipitation and energy consumption. The antiradical properties correlated with the phenolic content in the liquid phase, but no influence of temperature on the reducing properties was observed. The microwave-assisted hydrothermal treatment could be an efficient tool without needing chemicals for the extraction of carrageenans, which showed adequate rheological properties for commercial uses.

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“…Schefer et al report on measurements evaluated according to the Derjaguin–Muller–Toporov (DMT) model on κ-carrageenan to measure the elastic modulus for a thick film in the presence of 100 mM KCl as well as on a network of superstructures, the latter showing a bimodal modulus distribution [ 146 ]. Simkovic et al showed peak force modulus, stiffness and adhesion maps for ι- and κ-carrageenan and many other biopolymers [ 147 ].…”

Section: Applicationsmentioning

confidence: 99%

Atomic Force Microscopy (AFM) on Biopolymers and Hydrogels for Biotechnological Applications—Possibilities and Limits

2022

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Atomic force microscopy (AFM) is one of the microscopic techniques with the highest lateral resolution. It can usually be applied in air or even in liquids, enabling the investigation of a broader range of samples than scanning electron microscopy (SEM), which is mostly performed in vacuum. Since it works by following the sample surface based on the force between the scanning tip and the sample, interactions have to be taken into account, making the AFM of irregular samples complicated, but on the other hand it allows measurements of more physical parameters than pure topography. This is especially important for biopolymers and hydrogels used in tissue engineering and other biotechnological applications, where elastic properties, surface charges and other parameters influence mammalian cell adhesion and growth as well as many other effects. This review gives an overview of AFM modes relevant for the investigations of biopolymers and hydrogels and shows several examples of recent applications, focusing on the polysaccharides chitosan, alginate, carrageenan and different hydrogels, but depicting also a broader spectrum of materials on which different AFM measurements are reported in the literature.

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Extraction and characterization of polysaccharide films prepared from Furcellaria lumbricalis and Gigartina skottsbergii seaweeds

Cited by 13 publications

References 42 publications

Soluble Soybean Polysaccharide/Carrageenan Antibacterial Nanocomposite Films Containing Green Synthesized Silver Nanoparticles

Soluble Soybean Polysaccharide/Carrageenan Antibacterial Nanocomposite Films Containing Green Synthesized Silver Nanoparticles

Microwave-Assisted Extraction of Carrageenan from Sarcopeltis skottsbergii

Atomic Force Microscopy (AFM) on Biopolymers and Hydrogels for Biotechnological Applications—Possibilities and Limits

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