Validated spectrophotometric and spectrofluorimetric methods for determination of chloroaluminum phthalocyanine in nanocarriers

Autor(es)

Siqueira-Moura, M. P. ^[1] ; Primo, F. L. ^[1] ; Peti, A. P. F. ^[2] ; Tedesco, A. C. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, FCFRP, Programa Posgrad Ciencias Farmaceut, Ribeirao Preto, SP - Brazil

^[2] Univ Sao Paulo, FFCLRP, Lab Fotobiol & Fotomed, Dept Quim, Ribeirao Preto, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Pharmazie; v. 65, n. 1, p. 9-14, JAN 2010.
• Citações Web of Science: 19

Resumo

UV-VIS-Spectrophotometric and spectrofluorimetric methods have been developed and validated allowing the quantification of chloroaluminum phthalocyanine (CIAIPc) in nanocarriers. In order to validate the methods, the linearity, limit of detection (LOD), limit of quantification (LOQ), precision, accuracy, and selectivity were examined according to USP 30 and ICH guidelines. Linearities range were found between 0.50-3.00 mu g.mL(-1) (Y=0.3829 X {[}CIAIPc, mu g.mL(-1)] + 0.0126; r=0.9992) for spectrophotometry, and 0.05-1.00 mu g.mL(-1) (Y=2.24 x 10(6) X {[}CIAIPc, mu g.L(-1)] + 9.74 x 10(4); r=0.9978) for spectrofluorimetry. In addition, ANOVA and Lack-of-fit tests demonstrated that the regression equations were statistically significant (p<0.05), and the resulting linear model is fully adequate for both analytical methods. The LOD values were 0.09 and 0.01 mu g.mL(-1), while the LOCI were 0.27 and 0.04 mu g.mL(-1) for spectrophotometric and spectrofluorimetric methods, respectively. Repeatability and intermediate precision for proposed methods showed relative standard deviation (RSD) between 0.58% to 4.80%. The percent recovery ranged from 98.9% to 102.7% for spectrophotometric analyses and from 94.2% to 101.2% for spectrofluorimetry. No interferences from common excipients were detected and both methods were considered specific. Therefore, the methods are accurate, precise, specific, and reproducible and hence can be applied for quantification of CIAIPc in nanoemulsions (NE) and nanocapsules (NC). (AU)

• Processo FAPESP: 07/58809-9 - Nanocarreadores contendo ftalocianina de cloroaluminio: desenvolvimento, caracterizacao fisico-quimica e avaliacao in vitro da fotocitotoxicidade em melanoma
• Beneficiário: Marigilson Pontes de Siqueira Moura
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 06/50562-1 - Avaliacao do uso de laser de baixa potencia e agentes fotossensibilizadores associados a sistemas de liberacao nanoestruturados no tratamento de feridas e/ou outras doencas cutaneas
• Beneficiário: Fernando Lucas Primo
• Modalidade de apoio: Bolsas no Brasil - Doutorado