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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Comparative study of beta-carotene and microencapsulated beta-carotene: Evaluation of their genotoxic and antigenotoxic effects

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Autor(es):
Aissa, Alexandre Ferro [1] ; Pires Bianchi, Maria Lourdes [1] ; Ribeiro, Juliana Carvalho [1] ; Hernandes, Livia Cristina [1] ; de Faria, Adelia Ferreira [2] ; Mercadante, Adriana Zerlotti [2] ; Greggi Antunes, Lusania Maria [1]
Número total de Autores: 7
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Fac Pharmaceut Sci Ribeirao Preto, Dept Clin Toxicol & Bromatol Anal, BR-14040903 Ribeirao Preto, SP - Brazil
[2] Univ Campinas UNICAMP, Fac Food Engn, Dept Food Sci, Campinas, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: Food and Chemical Toxicology; v. 50, n. 5, p. 1418-1424, MAY 2012.
Citações Web of Science: 17
Resumo

beta-Carotene (BC) is one of the natural pigments that is most commonly added to food; however, the utilization of BC is limited due to its instability. Microencapsulation techniques are commonly used because they can protect the microencapsulated material from oxidization. Nevertheless, the properties of the encapsulated compounds must be studied. We compared the antigenotoxic potential of pure and microencapsulated beta-carotene (mBC) in Wistar rats. Two doses of BC or mBC (2.5 or 5.0 mg/kg) were administered by gavage over a period of 14 days. The final gavage was followed by an injection of doxorubicin (DXR). After 24 h the animals were euthanized. The micronucleus test results showed that when both mBC and DXR were given, only the higher dose was antigenotoxic. The results of the comet assay show that when given in association with DXR, mBC had protective effects in the liver. The differences between the results obtained with BC and mBC suggest that possibly the carotenoid biodisponibility was modified by the process of microencapsulation. In conclusion, mBC does not lose its protective properties, but higher doses must be used to observe antigenotoxic effects. This is the first time that the genotoxicity and antigenotoxicity of a microencapsulated compound was evaluated in vivo. (C) 2012 Elsevier Ltd. All rights reserved. (AU)

Processo FAPESP: 07/57702-6 - Avaliação da atividade antimutagênica do beta caroteno micro encapsulado em células de ratos tratados com o antitumoral doxorrubicina empregando os ensaios de micronúcleo e cometa
Beneficiário:Alexandre Ferro Aissa
Linha de fomento: Bolsas no Brasil - Mestrado
Processo FAPESP: 05/59552-6 - Avaliação integrada da estabilidade e propriedades funcionais de pigmentos naturais de alimentos
Beneficiário:Adriana Zerlotti Mercadante
Linha de fomento: Auxílio à Pesquisa - Temático