Evaluation antioxidant activity of Pothomorphe umbellate L. Miq skin
Full text
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| Author(s): |
Cristina Dislich Röpke
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Conjunto das Químicas (IQ e FCF) (CQ/DBDCQ) |
| Defense date: | 1999-03-26 |
| Examining board members: |
Silvia Berlanga de Moraes Barros;
Elfriede Marianne Bacchi;
Ana Campa
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| Advisor: | Silvia Berlanga de Moraes Barros |
| Abstract | |
Antioxidants may play a significant role in ameliorating or preventing oxidative damage to skin. In this work antioxidant activity of P. umbellata root extract, with known concentration of 4-nerolidylcathecol, incorporated to a hydrophilic ointment in different concentrations, was evaluated on skin of Hairless mice. This antioxidant activity was compared with that of different concentrations of α-tocopherol (Sigma) incorporated in the same vehicle. Lipid peroxidation of skin homogenates was evaluated as thiobarbituric acid reactants (TBARS) and chemiluminescense (CL). Animals treated with P. umbellata root extract showed a decrease up to 90% in the lipid peroxidation parameters, for concentrations higher than 0.1%. Our model demonstrated a significant decrease in TBARS an CL only for higher concentrations of α-tocopherol (5 and 10% w/w). The results indicate a potent antioxidant activity of the Pothomorphe umbellata root extract, suggesting its application in cosmetic formulations. (AU) | |