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A hydroxyapatite–Fe2O3 based material of natural origin as an active sunscreen filter

2014Journal article Restricted access
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dc.contributor.authorPiccirillo, C.
dc.contributor.authorRocha, C.
dc.contributor.authorTobaldi, D. M.
dc.contributor.authorPullar, R. C.
dc.contributor.authorLabrincha, J. A.
dc.contributor.authorFerreira, M. O.
dc.contributor.authorCastro, Paula M. L.
dc.contributor.authorPintado, M. E.
dc.date.accessioned2015-05-11T16:55:03Z
dc.date.available2015-05-11T16:55:03Z
dc.date.issued2014
dc.description.abstractThe use of sunscreens as protective barriers against skin damage and cancer, by absorbing harmful UVA and UVB rays, is becoming an increasingly important issue. Such products are usually based on TiO2 or ZnO, although both Fe2O3 and hydroxyapatite (Ca10(PO4)6(OH)2, HAp) doped with metal ions have been reported as being ultraviolet (UV) absorbing materials. HAp is the main component of bone; it is, therefore, highly biocompatible. In the present work, an iron-doped HAp-based material, containing both Fe ions substituted into the HAp structure and iron oxide in hematite (a-Fe2O3) form, was successfully developed from waste cod fish bones. This was achieved through a simple process of treating the bones in a Fe(II) containing solution, followed by heating at 700 C. The material showed good absorption in the whole UV range and did not form radicals when irradiated. The sunscreen cream formulated with this material could be used as a broad sunscreen protector (lcrit > 370 nm), showing high absorption both in the UVA and UVB ranges. Because of its absorption properties it would be classified as 5 star protection according to the Boots UVA star rating system. The cream is also photostable, and does not cause irritation or erythema formation when in contact with the human skin. These results show that a food by-product such as fish bones could be converted into a valuable product, with potential applications in health care and cosmetics. This is the first time a HAp-based sunscreen cream has been developed and validated as a proof of concept.por
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.citationPICCIRILLO,C. ...[et al.] - A hydroxyapatite–Fe2O3 based material of natural origin as an active sunscreen filter. Journal of Materials Chemistry B. ISSN 2050-750X. Vol. 2 (2014), p. 5999–6009por
dc.identifier.doi10.1039/C4TB00984C
dc.identifier.issn2050-750X
dc.identifier.urihttp://hdl.handle.net/10400.14/17546
dc.identifier.wosWOS:000341300300008
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherRoyal Society of Chemistry
dc.relationStrategic Project - LA 16 - 2011-2012
dc.titleA hydroxyapatite–Fe2O3 based material of natural origin as an active sunscreen filterpor
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleStrategic Project - LA 16 - 2011-2012
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F86483%2F2012/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/COMPETE/PEst-C%2FCTM%2FLA0011%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/PEst-OE%2FEQB%2FLA0016%2F2011/PT
oaire.citation.endPage6009
oaire.citation.issue36
oaire.citation.startPage5999
oaire.citation.titleJournal of Materials Chemistry B
oaire.citation.volume2
oaire.fundingStreamSFRH
oaire.fundingStreamCOMPETE
oaire.fundingStream6817 - DCRRNI ID
person.familyNamePiccirillo
person.familyNameTobaldi
person.familyNamePullar
person.familyNameLabrincha
person.familyNameFerreira
person.familyNameCastro
person.familyNamePintado
person.givenNameClara
person.givenNameDavid Maria
person.givenNameRobert
person.givenNameJoao
person.givenNameMaria Teresa
person.givenNamePaula
person.givenNameMaria Manuela
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person.identifier.ridN-8206-2013
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project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
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