Characterization of aerogels as bioactive delivery vehicles produced through the valorization of yerba-mate (Illex paraguariensis)

Oliveira, Jean Paulo de; Bruni, Graziella Pinheiro; Fonseca, Laura Martins; Silva, Francine Tavares da; Rocha, Jeferson Cunha da; Zavareze, Elessandra da Rosa

doi:10.1016/j.foodhyd.2020.105931

Cited by 33 publications

(16 citation statements)

References 63 publications

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“…The initial release presented the same increase profile, though for samples containing glycerine there was a slight increase in drug release compared to the other samples which may be related to the plasticizer effect that disrupted the hydrogen bonds within the material [53]. The release profile was similar to a previous work that blended the extract with nanocellulose [54].…”

Section: Extract Release Antibacterial and Antioxidant Activitiessupporting

confidence: 75%

Yerba Mate Extract in Microfibrillated Cellulose and Corn Starch Films as a Potential Wound Healing Bandage

et al. 2020

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Microfibrillated cellulose films have been gathering considerable attention due to their high mechanical properties and cheap cost. Additionally, it is possible to include compounds within the fibrillated structure in order to confer desirable properties. Ilex paraguariensis A. St.-Hil, yerba mate leaf extract has been reported to possess a high quantity of caffeoylquinic acids that may be beneficial for other applications instead of its conventional use as a hot beverage. Therefore, we investigate the effect of blending yerba mate extract during and after defibrillation of Eucalyptus sp. bleached kraft paper by ultrafine grinding. Blending the extract during defibrillation increased the mechanical and thermal properties, besides being able to use the whole extract. Afterwards, this material was also investigated with high content loadings of starch and glycerine. The results present that yerba mate extract increases film resistance, and the defibrillated cellulose is able to protect the bioactive compounds from the extract. Additionally, the films present antibacterial activity against two known pathogens S. aureus and E. coli, with high antioxidant activity and increased cell proliferation. This was attributed to the bioactive compounds that presented faster in vitro wound healing, suggesting that microfibrillated cellulose (MFC) films containing extract of yerba mate can be a potential alternative as wound healing bandages.

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Section: Extract Release Antibacterial and Antioxidant Activitiessupporting

confidence: 75%

Yerba Mate Extract in Microfibrillated Cellulose and Corn Starch Films as a Potential Wound Healing Bandage

et al. 2020

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“…This is in line with other studies reporting that konjac glucomannan aerogels are not characterised as having an orderly structure (Wang et al ., 2019). The morphology of food‐grade polysaccharide aerogels significantly depends on the type of polysaccharide used; for example, aerogels made with pectin or cellulose were characterised as having more compact and well‐organised structures (de Oliveira et al ., 2020). Again, it is important to note that such a rigid well‐organised structure is sometimes undesirable because it could slow down the absorption of biologically active compounds.…”

Section: Resultsmentioning

confidence: 99%

“…It is well known that aerogel morphology directly affects the kinetics of absorption as well as the release of the compounds uploaded to the aerogels (de Oliveira et al ., 2020). Higher porosity is a desirable property if the aerogel is to be used as a carrier matrix for bioactive compounds.…”

Section: Resultsmentioning

confidence: 99%

“…These delivery systems could be fabricated with controlled structural properties, high specific surface areas and high porosities. Low density and good mechanical strength of aerogels is associated with high loading capacity, improved bioavailability and targeted compound release (Kleemann et al ., 2018; de Oliveira et al ., 2020). Another important advantage is that these systems do not involve high temperatures during the encapsulation process, which may protect thermally labile ingredients (Shishir & Chen, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Aerogels were already used as carriers for pinhão coat extract (Fonseca et al ., 2021) and yerba‐mate (de Oliveira et al ., 2020).…”

Section: Introductionmentioning

confidence: 99%

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Characterisation of hydrogels and aerogels as carriers for sea buckthorn pomace extract

Švermickaitė

Eisinaitė

Vinauskienė

et al. 2022

Int J of Food Sci Tech

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Summary In this study, aerogels were prepared from kognac glucomannan (KG) or whey proteins loaded with bioactive sea buckthorn pomace extract. KG was diacetylated with Na2CO3 (0.1; 0.2; 0.3; 0.4 m) resulting hydrogel formation that were further freeze‐dried to obtain an aerogel structure. Whey protein aerogels were prepared by removing pore fluid from alcogels using supercritical CO2 drying. Produced aerogels evaluated for microstructure, porosity, specific surface area, absorption capacity, encapsulation efficiency and antioxidant capacity of the extract. It was found that higher concentration of alkali induced higher hardness, resilience and elastic modulus values. It was also obtained that pores in the konjac glucomannan aerogels were irregular in shape and a decrease in total pore volume (0.026 to 0.019 cc/g) and surface area (12.39 to 11.40 m2/g) after increasing the carbonate concentration was observed. These aerogels were found to have better encapsulation efficiency properties for sea buckthorn pomace extract (17 to 20%) in comparison to whey protein aerogels (0.05 to 0.36%). Overall, the KG aerogels show potential for applications in the food industry as a carrier of bioactive sea buckthorn pomace extract, while whey proteins must be used in combination with other biopolymers to enhance their bioactive compound loading capacity.

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Water‐Absorbent Biodegradable Aerogels Based on Potato, Cassava, Bean, and Maize Starches Applied in the Absorption of Chicken Exudate

Costa,

Silva,

Cruz

et al. 2024

Starch Stärke

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Starch aerogels are a clean‐label alternative to produced active packaging aimed at preserving food products. This study aims to produce water‐absorbent and reusable aerogels from different starches and investigates their properties according to the type of starch. The aerogels are produced using different starch concentrations and evaluated in terms of morphology, density, porosity, relative crystallinity, texture properties, water absorbent capacity, reusability as water absorbent, and water absorption rate. The aerogel is applied as an absorbent of chicken breast exudate. The starches’ amylose content is 28.2%, 27.4%, 45.4%, and 30.2% for the potato, cassava, bean, and maize starches, respectively. All aerogels display physical integrity and porous structures with low density and high porosity, and their relative crystallinity decreases compared to the starches. The texture properties show great elasticity. The aerogels present high water absorption capacity, ranging from 685% to 1714%. Potato and bean starch aerogels can be reused as water absorbents 12 times showing, after the first immersion, a stable water retention rate over the reusable period. The maize starch‐based aerogel is applied as an absorbent for chicken breast exudate, reaching 39% absorption, proving to be an excellent material for application as active food packaging for fresh food preservation.

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Characterization of aerogels as bioactive delivery vehicles produced through the valorization of yerba-mate (Illex paraguariensis)

Cited by 33 publications

References 63 publications

Yerba Mate Extract in Microfibrillated Cellulose and Corn Starch Films as a Potential Wound Healing Bandage

Yerba Mate Extract in Microfibrillated Cellulose and Corn Starch Films as a Potential Wound Healing Bandage

Characterisation of hydrogels and aerogels as carriers for sea buckthorn pomace extract

Water‐Absorbent Biodegradable Aerogels Based on Potato, Cassava, Bean, and Maize Starches Applied in the Absorption of Chicken Exudate

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