“Viabilidade Do Uso De Cascas De Ovos Na Síntese Da Hidroxiapatita Utilizando O Método Sol-Gel

Aguilar, Marilza Sampaio; Campos, José Brant de; Machado, Marcelo Vitor Ferreira; Moura, F.; Peripolli, S.; Ramos, Vitor Santos; Quizunda, Adilson Claudio; Horta, Marla Karolyne dos Santos

doi:10.22533/at.ed.4491904046

Cited by 4 publications

(4 citation statements)

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“…O teste da unidade de congelamento foi realizado utilizando diferentes materiais, como realizado por Aguilera e colaboradores [11]. Os materiais utilizados foram partículas submicrométricas de Ca10(PO4)6OH2 [12] e de Al2O3 comercial (Sigma-Aldrich).…”

Section: Aplicação Da Técnica De Freeze Castingunclassified

Unidade De Congelamento Instrumentada Para Processamento De Materiais Por Ice-Templating

Silva,

Santos,

Baêta Júnior

et al. 2023

ABM Proceedings

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ResumoO processamento de materiais por técnicas baseadas em ice-templating foi desenvolvida nos anos 50, com diversos avanços ao longo das décadas, para o controle da formação e crescimento dos poros de interesse, a partir de segregação de partículas em um solvente em baixa temperatura. A criação dos poros é essencial para aplicações em que se quer obter processos de adsorção, filtragem, ancoragem, como no caso dos biomateriais. Com o objetivo de aprimorar aparatos já conhecidos na literatura para processamento por freeze casting, uma unidade de congelamento utilizando placas de Peltier para resfriamento de amostras até o congelamento de um solvente foi instrumentada. Estudos iniciais com Al2O3 e Ca10(PO4)6OH2 indicaram a formação da estrutura porosa orientada como esperado a partir do congelamento.

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Section: Aplicação Da Técnica De Freeze Castingunclassified

Unidade De Congelamento Instrumentada Para Processamento De Materiais Por Ice-Templating

Silva,

Santos,

Baêta Júnior

et al. 2023

ABM Proceedings

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“…These data demonstrate the reason for its high biocompatibility and similarities with some properties of bone, including bioactivity, biodegradability and osteoconductivity 5 . Hydroxyapatite can be obtained by chemical reactions using different reagents that contain the calcium and phosphate ions, using synthetic or natural calcium sources, such as hen's eggshells [6][7][8][9] , shells, corals 10,11 , etc. Hydroxyapatite can also be extracted from biogenic sources, such as bovine bones, pig bones 12 , fish bones and scales 13,14 .…”

Section: Introductionmentioning

confidence: 99%

Hydroxyapatite from biowaste for biomedical applications: obtainment, characterization and in vitro assays

Horta

Westin

Rocha³

et al. 2023

Mat. Res.

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The use of biogenic residues to obtain calcium phosphate compounds, mainly hydroxyapatite (HAp), is an excellent alternative to reduce costs in obtaining biomaterials. The purpose of this study was to obtain hydroxyapatite from fish bones and hen eggshells by alkaline hydrolysis and precipitation, respectively, and compare them to HAp obtained from calcium commercial source based on physical-chemical properties and in vitro assays. The biomaterials obtained were characterized by X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Brunauer-Emmett-Teller (BET) method and Fourier Transform Infrared Spectroscopy (FTIR). The XRD results revealed the presence of the main characteristic peaks of single HAp phase and FTIR analysis showed various functional groups, such as PO 4 3-, CO 3 -2 and OH -, confirming the presence of HAp. SEM observations of the synthesized HAp showed a rod-like and spherical-like morphology. The cell viability and bioactivity of the materials were evaluated by rezasurin reduction and McCoy medium assays, respectively. The biomaterials obtained had no toxic effect and the sample obtained from fish bone was more bioactive when compared to the others. Therefore, the biowastes can be used as an alternative source of calcium in the synthesis of hydroxyapatite with promising properties for application in the biomedical area.

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“…Hydroxyapatite can be extracted from bovine and pigs bones, fish scales [7][8][9][10][11][12] and can also be synthesized from natural calcium sources such as hen's eggshells, shells, corals [13][14][15] through chemical reactions. Hen's eggs are among the most consumed foods in the world and, therefore, a large amount of waste is generated.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured Hydroxyapatite from Hen´s Eggshells Using Sucrose as a Template

et al. 2020

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“Viabilidade Do Uso De Cascas De Ovos Na Síntese Da Hidroxiapatita Utilizando O Método Sol-Gel

Cited by 4 publications

References 0 publications

Unidade De Congelamento Instrumentada Para Processamento De Materiais Por Ice-Templating

Unidade De Congelamento Instrumentada Para Processamento De Materiais Por Ice-Templating

Hydroxyapatite from biowaste for biomedical applications: obtainment, characterization and in vitro assays

Nanostructured Hydroxyapatite from Hen´s Eggshells Using Sucrose as a Template

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