TITLE:
Antioxidant Activity of Cosmetic Formulations Based on Novel Extracts from Seeds of Brazilian Araucaria angustifolia (Bertoll) Kuntze
AUTHORS:
Gabriela Sprada Tavares da Mota, Angela Bonjorno Arantes, Gianni Sacchetti, Antonella Spagnoletti, Paola Ziosi, Emanuela Scalambra, Silvia Vertuani, Stefano Manfredini
KEYWORDS:
Araucaria angustifolia, Sustainability, Seed Alcoholic Extracts, Antioxidant Activity, Characterization, HPTLC, ORAC, PCL
JOURNAL NAME:
Journal of Cosmetics, Dermatological Sciences and Applications,
Vol.4 No.3,
June
17,
2014
ABSTRACT: The process of oxidation, due to
free radicals, is the cause of major concern for human health. In particular damages
related to the skin have great relevance; therefore, many antioxidants based products
are developed and marketed with the intention to counteract the action of free radicals.
The seed of Araucaria angustifolia is
a rich source of antioxidants due to the presence of bioflavonoids to
counteract free radicals damages. In this study, two extracts, one from the seed
external teguments (shell) and the other from the inner seed pulp (endosperm and
embryo) were obtained in order to evaluate possible applications to the dermo-cosmetic
field. In parallel the following different methods were employed to characterize
both the extracts and to determine their antioxidant
capacity: HPTLC, ABTS and DPPH, ORAC and PLC. The qualitative analysis showed that
both extracts have the antioxidant activity, but the quantitative evaluation
revealed a more promising bioactivity from the shell than from the pulp. Therefore,
it was evaluated the potential skin application of different cosmetic
formulations, based on the presence of seed shell extract (W/O emulsion, O/W
emulsion and gel). The best result was achieved with the W/O emulsion.