AVALIAÇÃO FOTOBIOLÓGICA DE UMA MISTURA DE FILTROS SOLARES PHOTOBIOLOGIC VALUATION OF SUNSCREENS MIXTURE
Author(s) -
Elisabete Pereira dos Santos,
Sheila Garcia,
Zaida Maria Faria de Freitas,
Anneliese Lopes Barth
Publication year - 2001
Publication title -
visão acadêmica
Language(s) - English
Resource type - Journals
eISSN - 1518-8361
pISSN - 1518-5192
DOI - 10.5380/acd.v2i2.489
Subject(s) - chemistry , phototoxicity , nuclear chemistry , physics , chromatography , in vitro , biochemistry
O principal objetivo deste trabalho foi avaliar a eficacia de uma emulsao anti-solar contendo uma mistura de tres filtros solares orgânicos: p-metoxicinamato de octila a 7,0% + metil benzilideno cânfora a 3,0% + p-metoxicinamato de isoamila a 3,0%. O Fator de Protecao Solar (FPS) foi calculado in vitro por metodo espectrofotometrico. Foi feita a analise da fotoestabilidade da mistura por espectrometria e por cromatografia liquida de alta eficiencia para determinar se os filtros sofrem fotodecomposicao apos serem irradiados com doses 10, 50 e 100 vezes superiores a dose normal para formacao de eritema (DME). Foram realizados tambem testes de fototoxicidade e fotomutagenicidade para determinar se a interacao quimica ocorrida entre os filtros apos as irradiacoes nao conferiu nenhuma propriedade toxica ou mutagenica a mistura. PHOTOBIOLOGIC VALUATION OF SUNSCREENS MIXTURE Abstract The objective of this work to evaluate the efficiency of the sunscreen lotion containing the three chemical sunscreens: octyl p-metoxycinnamate 7%, methylbenzilidene camphor 3% and isoamyl p-metoxycinnamate 3%. The Sun Protective Factor (SPF) was calculated using the in vitro spectrophotometric methods. The photostability of this combination was accessed using spectrophotometry in the UV region and high performance liquid chromatography. The combination of sunscreens was irradiated with doses 10, 50 and 100 higher than the minimal eritemogenic dose (MED). Phototoxicity and photomutagenicity tests were also performed to evaluate if interactions that occurred among the sunscreens after the irradiation gave any toxic or mutagenic character to the combination of sunscreens.
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