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In vitro evaluation of copaiba oil as a kojic acid skin enhancer
Oliveira, Robson Vicente Machado de; Ohara, Mitsuko Taba; Vila, Marta Maria Duarte Carvalho; Gonçalves, Marcos Moisés.
  • Oliveira, Robson Vicente Machado de; s.af
  • Ohara, Mitsuko Taba; s.af
  • Vila, Marta Maria Duarte Carvalho; s.af
  • Gonçalves, Marcos Moisés; s.af
Braz. j. pharm. sci ; 46(2): 363-370, Apr.-June 2010. ilus, tab
Article in English | LILACS | ID: lil-564904
ABSTRACT
The capacity of copaíba oil to act as a skin penetration enhancer for the depigmenting agent kojic acid was evaluated using an in vitro diffusion system with static flux and shed rattlesnake skin membrane, Crotalus durissus terrificus, in saline solution at 34±2 ºC as the fluid receptor. The quantities of kojic acid liberated into the fluid receptor were determined by spectrophotometry at 268 nm with intervals of one and a half hours. The membranes, pretreated with copaíba oil at 25 percent and 50 percent v/v, gave flux values of 8.0 and 12.7 µg/cm²/h, permeability values of 2.0 and 3.3 cm×10-4/h, and promotion factors of 4.1 and 3.7, respectively. These results indicate that copaíba oil, at the two concentrations studied, has the capacity to promote penetration of kojic acid.
RESUMO
A propriedade do óleo de copaíba como agente promotor de penetração cutânea do despigmentante ácido kójico foi avaliada utilizando-se sistema de difusão in vitro com fluxo estático, membrana de pele da serpente cascavel - Crotalus durissus terrificus e solução salina a 34±2 ºC como fluido receptor. As quantidades liberadas do ácido kójico no fluido receptor foram determinadas por espectrofotometria em 268 nm em intervalos de 1:30 h. As membranas pré-tratadas com óleo de copaíba a 25 e 50 por cento v/v apresentaram valores de fluxo de 8,0 e 12,7 µg/cm²/h, permeabilidade de 2,0 e 3,3 cm×10-4/h, e fatores de promoção de 4,1 e 3,7, respectivamente. Os resultados obtidos indicaram que o óleo de copaíba, nas duas concentrações estudadas, apresentou capacidade de promoção da penetração do ácido kójico.
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Full text: Available Index: LILACS (Americas) Main subject: Penicillium / Aspergillus / Plant Oils / Drug Synergism / Fabaceae Type of study: Evaluation studies Language: English Journal: Braz. j. pharm. sci Year: 2010 Type: Article

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Full text: Available Index: LILACS (Americas) Main subject: Penicillium / Aspergillus / Plant Oils / Drug Synergism / Fabaceae Type of study: Evaluation studies Language: English Journal: Braz. j. pharm. sci Year: 2010 Type: Article