Micro- and Nanostructures of Agave Fructans to Stabilize Compounds of High Biological Value via Electrohydrodynamic Processing

Cruz-Salas, Carla N.; Prieto, Cristina; Calderón‐Santoyo, Montserrat; Lagarón, José M.; Ragazzo‐Sánchez, Juan Arturo

doi:10.3390/nano9121659

Cited by 18 publications

(11 citation statements)

References 34 publications

(40 reference statements)

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“…The electrospinning process is the most suitable technique for drug delivery and tissue engineering applications of PCL-based nanocomposite fibers [11][12][13][14]. The electrospinning process, belonging to the electro-hydrodynamic processing [14], can consistently produce a wide variety of woven non-woven mat starting from polymeric solutions exposed to high electric fields that offer large surface areas, small inter-fibrous pore size, and high porosity [15][16][17][18], with interest in the biomedical field since they mimic the structure of extracellular matrix [19]. Moreover, the electrospinning process is one of the most efficient, simple, and versatile processing techniques able to control micro and nanofibers' structural and functional properties through a relatively simple and cost-effective approach [20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Organic and Inorganic PCL-Based Electrospun Fibers

et al. 2020

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In this work, different nanocomposite electrospun fiber mats were obtained based on poly(e-caprolactone) (PCL) and reinforced with both organic and inorganic nanoparticles. In particular, on one side, cellulose nanocrystals (CNC) were synthesized and functionalized by “grafting from” reaction, using their superficial OH– group to graft PCL chains. On the other side, commercial chitosan, graphene as organic, while silver, hydroxyapatite, and fumed silica nanoparticles were used as inorganic reinforcements. All the nanoparticles were added at 1 wt% with respect to the PCL polymeric matrix in order to compare the different behavior of the woven no-woven nanocomposite electrospun fibers with a fixed amount of both organic and inorganic nanoparticles. From the thermal point of view, no difference was found between the effect of the addition of organic or inorganic nanoparticles, with no significant variation in the Tg (glass transition temperature), Tm (melting temperature), and the degree of crystallinity, leading in all cases to high crystallinity electrospun mats. From the mechanical point of view, the highest values of Young modulus were obtained when graphene, CNC, and silver nanoparticles were added to the PCL electrospun fibers. Moreover, all the nanoparticles used, both organic and inorganic, increased the flexibility of the electrospun mats, increasing their elongation at break.

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Section: Introductionmentioning

confidence: 99%

Organic and Inorganic PCL-Based Electrospun Fibers

et al. 2020

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“…Recently, agave fructans have been employed as functional ingredients for granola bars [56], and encapsulating material for bioactive compounds, given their high degree of polymerization [80].…”

Section: Functional Potentialmentioning

confidence: 99%

Agave By-Products: An Overview of Their Nutraceutical Value, Current Applications, and Processing Methods

et al. 2021

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Agave, commonly known as “maguey” is an important part of the Mexican tradition and economy, and is mainly used for the production of alcoholic beverages, such as tequila. Industrial exploitation generates by-products, including leaves, bagasse, and fibers, that can be re-valorized. Agave is composed of cellulose, hemicellulose, lignin, fructans, and pectin, as well as simple carbohydrates. Regarding functional properties, fructans content makes agave a potential source of prebiotics with the capability to lower blood glucose and enhance lipid homeostasis when it is incorporated as a prebiotic ingredient in cookies and granola bars. Agave also has phytochemicals, such as saponins and flavonoids, conferring anti-inflammatory, antioxidant, antimicrobial, and anticancer properties, among other benefits. Agave fibers are used for polymer-based composite reinforcement and elaboration, due to their thermo-mechanical properties. Agave bagasse is considered a promising biofuel feedstock, attributed to its high-water efficiency and biomass productivity, as well as its high carbohydrate content. The optimization of physical and chemical pretreatments, enzymatic saccharification and fermentation are key for biofuel production. Emerging technologies, such as ultrasound, can provide an alternative to current pretreatment processes. In conclusion, agaves are a rich source of by-products with a wide range of potential industrial applications, therefore novel processing methods are being explored for a sustainable re-valorization of these residues.

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“…The objective of this study is to evaluate the possibility of increasing the stability and loading capacity of β-carotene in WPC capsules, by using DES as solvents and emulsion electrospraying as the encapsulation technique. β-carotene is a very well-known model bioactive compound with low solubility, and many works have been published before in the group dealing with the stabilization of β-carotene [30,[34][35][36]. In this study, we investigated the possibility of generating emulsions with these solvents, using an aqueous solution of WPC as a continuous phase, and DES with or without bioactive, as the dispersed phase.…”

Section: Introductionmentioning

confidence: 99%

Encapsulation of β-Carotene by Emulsion Electrospraying Using Deep Eutectic Solvents

et al. 2020

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The encapsulation β-carotene in whey protein concentrate (WPC) capsules through the emulsion electrospraying technique was studied, using deep eutectic solvents (DES) as solvents. These novel solvents are characterized by negligible volatility, a liquid state far below 0 °C, a broad range of polarity, high solubilization power strength for a wide range of compounds, especially poorly water-soluble compounds, high extraction ability, and high stabilization ability for some natural products. Four DES formulations were used, based on mixtures of choline chloride with water, propanediol, glucose, glycerol, or butanediol. β-Carotene was successfully encapsulated in a solubilized form within WPC capsules; as a DES formulation with choline chloride and butanediol, the formulation produced capsules with the highest carotenoid loading capacity. SEM micrographs demonstrated that round and smooth capsules with sizes around 2 µm were obtained. ATR-FTIR results showed the presence of DES in the WPC capsules, which indirectly anticipated the presence of β-carotene in the WPC capsules. Stability against photo-oxidation studies confirmed the expected presence of the bioactive and revealed that solubilized β-carotene loaded WPC capsules presented excellent photo-oxidation stability compared with free β-carotene. The capsules developed here clearly show the significant potential of the combination of DES and electrospraying for the encapsulation and stabilization of highly insoluble bioactive compounds.

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Micro- and Nanostructures of Agave Fructans to Stabilize Compounds of High Biological Value via Electrohydrodynamic Processing

Cited by 18 publications

References 34 publications

Organic and Inorganic PCL-Based Electrospun Fibers

Organic and Inorganic PCL-Based Electrospun Fibers

Agave By-Products: An Overview of Their Nutraceutical Value, Current Applications, and Processing Methods

Encapsulation of β-Carotene by Emulsion Electrospraying Using Deep Eutectic Solvents

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