Electrospun Starch Fibers Loaded with Pinhão (Araucaria angustifolia) Coat Extract Rich in Phenolic Compounds

Fonseca, Laura Martins; Oliveira, Jean Paulo de; Crizel, Rosane Lopes; Silva, Francine Tavares da; Zavareze, Elessandra da Rosa; Borges, Caroline Dellinghausen

doi:10.1007/s11483-020-09629-9

Cited by 31 publications

(27 citation statements)

References 33 publications

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“…produced zein fibers with the incorporation of various yerba‐mate extract concentrations (1.0, 3.0 and 5.0% (w/w)) and found a more cylindrical shape. Fonseca et al 16 . produced potato starch nanofibers with pinhão coat extract (0.5, 1.0 and 1.5% (w/w)) resulting in cylindrical, homogeneous and beadless fibers.…”

Section: Resultsmentioning

confidence: 99%

“…Fiber‐forming solutions were prepared with 50% (w/v) starch in formic acid (75% (v/v) in Milli‐Q water) solution (5 g of soluble potato starch in 10 mL of formic acid). Starch gelatinization was achieved under stirring (Fisatom magnetic stirrer, model 752/6, Brazil) for 24 h. The solutions were kept resting for more 24 h to achieve electrospinnability 16 . Folic acid was added into the fiber‐forming solutions at concentrations of 5, 10 and 15% (w/w on dry basis) and stirred for 30 min for compete dissolution.…”

Section: Methodsmentioning

confidence: 99%

“…The parameters used were as follows: applied voltage of 25 kV; tip of the spinneret to collector distance of 20 cm; and fiber‐forming solution flow rate of 0.6 mL h −1 . The temperature of the process was set at 25 ± 2 °C with an air conditioner and the relative humidity at 51% with a dehumidifier 16 …”

Section: Methodsmentioning

confidence: 99%

“…The EE of folic acid loaded into the starch nanofibers was determined using ultrahigh‐performance liquid chromatography (UHPLC) 5,16 . Non‐encapsulated folic acid (10 mg) and starch/folic acid nanofibers (5 mg) were immersed in 10 and 2 mL of Milli‐Q water, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…Thus, we used electrospinning to produce ultrafine fibers from corn 13 and soluble potato starch, 14 both with normal amylose content. Since soluble potato starch nanofibers present desirable characteristics, such as homogeneous and continuous morphology, they have been previously used for the encapsulation of bioactive compounds including carvacrol 15 and pinhão coat extract 16 . Evangelho et al 5 .…”

Section: Introductionmentioning

confidence: 99%

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Starch nanofibers as vehicles for folic acid supplementation: thermal treatment, UVA irradiation and in vitro simulation of digestion

et al. 2020

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BACKGROUND The supplementation of folic acid in food is essential in the human diet. The present study aimed to encapsulate folic acid at different concentrations (5, 10 and 15% (w/w) on a dry basis) in potato starch nanofibers produced through electrospinning. The starch/folic acid nanofibers were evaluated through morphology, Fourier transform infrared (FTIR) spectra, thermal properties, encapsulation efficiency (EE) and in vitro simulation of the human digestion. The nanofibers were also evaluated based on the folic acid content after thermal treatment (100 and 180 °C) and UVA irradiation (1 and 24 h). RESULTS Folic acid incorporation influenced the morphology of the nanofibers to display a homogeneous and beadless morphology for nanofibers containing 15% folic acid compared with the other nanofibers (0, 5 and 10% folic acid). The mean diameter varied from 75 to 81 nm. Folic acid characteristic bands and peaks were not found in the nanofiber FTIR spectra and thermograms, respectively. The EE was 73, 87 and 95% for nanofibers with 5, 10 and 15% folic acid, respectively. CONCLUSIONS The starch nanofibers protected folic acid from high temperature and UVA irradiation and during in vitro digestion, showing a release of the vitamin at the end of the simulation (intestinal conditions). The supplementation of folic acid in foods can be effectively achieved by its encapsulation into starch nanofibers, to ensure its protection and controlled release. © 2020 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Starch nanofibers as vehicles for folic acid supplementation: thermal treatment, UVA irradiation and in vitro simulation of digestion

et al. 2020

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Electrospun potato starch nanofibers for thyme essential oil encapsulation: antioxidant activity and thermal resistance

et al. 2020

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BACKGROUNDThyme essential oil (TEO) is an excellent natural substitute for synthetic compounds to maintain the quality and safety of food products. It acts as an antioxidant agent. We aimed to nanoencapsulate TEO at concentrations of 1%, 3%, and 5% (v/w, dry basis) in electrospun nanofibers made of starch (50% w/v) and formic acid (75% v/v). The rheological parameters of the fiber‐forming solutions were measured, and various physical and chemical properties of the nanofibers were analyzed.RESULTSThe starch/TEO nanofibers presented homogeneous morphology. The starch nanofibers showed high encapsulation efficiency (EE, 99.1% to 99.8%), which, along with the Fourier transform infra‐red (FTIR) spectrum and thermogravimetric analysis (TGA) analysis, indicate strong protection of the phenolic compounds of TEO. Nanofibers with 5% TEO retained up to 50% of the phenolic compounds after exposure to thermal treatment. The antioxidant activity against 2,2‐diphenyl‐1‐picrylhydrazyl (DPPH) radicals of the starch/TEO nanofibers varied from 11.1% to 14.2% and the inhibition values (29.8%, P ≤ 0.05) against hydroxyl radicals were the same for free TEO and the nanofibers.CONCLUSIONOwing to these properties, electrospun starch/TEO nanofibers can be applied in food products or food packaging.

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Impact of concentration and aging time of pea starch‐based polymeric solutions on the fabrication of electrospun nanofibers

da Cruz,

dos Santos,

de Souza

et al. 2024

Polymers for Advanced Techs

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Polymer concentration and aging time of polymeric solutions are crucial factors that can influence their viscosity, playing an essential role in the fabrication of electrospun nanofibers. Based on this, herein we evaluated the impact of aging time (24 and 48 h) and pea starch concentration (10%, 20%, and 30%, wt/vol) on the polymeric solutions to produce electrospun nanofibers. Solutions were evaluated by rheology, electrical conductivity, and degree of substitution. The nanofibers were analyzed by morphology, size distribution, chemical nature, and thermal properties. The degree of substitution of starches varied from 1.17 to 1.56. Overall, electrical conductivity decreased with increasing starch concentration and aging time of the polymeric solutions. The use of 10% starch displayed a transition from capsules to fibers, while 20% and 30% starch were able to manufacture homogenous, cylindrical, and random nanofibers with diameters varying from 89 to 373 nm. A significant impact of viscosity was not observed; on the other hand, aging time increased the average diameter of nanofibers. Besides, the fabricated nanofibers showed a lower decomposition temperature than raw starch. The fabricated nanofibers have great potential as wall materials for the encapsulation of different compounds and applications in the biomedical and food sectors.

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Electrospun Starch Fibers Loaded with Pinhão (Araucaria angustifolia) Coat Extract Rich in Phenolic Compounds

Cited by 31 publications

References 33 publications

Starch nanofibers as vehicles for folic acid supplementation: thermal treatment, UVA irradiation and in vitro simulation of digestion

Starch nanofibers as vehicles for folic acid supplementation: thermal treatment, UVA irradiation and in vitro simulation of digestion

Electrospun potato starch nanofibers for thyme essential oil encapsulation: antioxidant activity and thermal resistance

Impact of concentration and aging time of pea starch‐based polymeric solutions on the fabrication of electrospun nanofibers

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