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Antioxidant activity and potential photoprotective from amazon native flora extracts
- Source :
- Journal of Photochemistry and Photobiology B: Biology. 161:34-39
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- Plant species are sources of active compounds that can fight and/or prevent damage caused by reactive oxygen species, which enables the development of natural products that can help to prevent premature aging caused by exposure to solar radiation. This study assessed the antioxidant and photoprotective activities of six dried extracts of plants from the Brazilian Amazon biome. Plant extracts were prepared in 70% (v/v) ethanol by dynamic maceration for 72h in the dark, and then filtered, concentrated and lyophilized. The extracts were subjected to a phytochemical screening. The antioxidant activity was measured using a 2,2-diphenyl-1-picrylhydrazyl assay and the photoprotection assay was performed using the diffuse transmittance technique. The data obtained from the antioxidant activity assay was evaluated by Student's t-test for independent samples, with the aid of Statistical Package for Social Sciences v.14.0 for Windows software. The flavonoids represent a special metabolites class present in all analyzed extracts. The antioxidant activity (μgmL(-1)) decreased in the following order: Aniba canelilla (1.80±0.16), Brosimum acutifolium (2.84±0.38), Dalbergia monetaria (5.46±0.17) or Caesalpinia pyramidalis (6.45±1.18), Arrabidaea chica (15.35±0.86), and Aspidosperma nitidum (99.14±2.3). Only D. monetaria showed a considerable sun protection factor allowing for labeling (6.0±0.3). The D. monetaria extract was considered the most promising sample because it had optimal antioxidant and photoprotective activities against solar radiation, considering the limit established by regulatory agencies. These extracts with antioxidant potential can be used in photoprotective formulations, providing synergistic photoprotective effect or elevating the adeed value of the product. Additionally, these formulations are attractive to a population who searchs for products made with natural ingredients.
- Subjects :
- Premature aging
Antioxidant
Ultraviolet Rays
medicine.medical_treatment
Population
Biophysics
01 natural sciences
Antioxidants
03 medical and health sciences
0302 clinical medicine
Botany
Maceration (wine)
medicine
Radiology, Nuclear Medicine and imaging
education
education.field_of_study
Radiation
Radiological and Ultrasound Technology
biology
Traditional medicine
Plant Extracts
010405 organic chemistry
biology.organism_classification
0104 chemical sciences
Plant Leaves
Phytochemical
030220 oncology & carcinogenesis
Photoprotection
Bignoniaceae
Aspidosperma
Arrabidaea chica
Sun Protection Factor
Sunscreening Agents
Brazil
Subjects
Details
- ISSN :
- 10111344
- Volume :
- 161
- Database :
- OpenAIRE
- Journal :
- Journal of Photochemistry and Photobiology B: Biology
- Accession number :
- edsair.doi.dedup.....b368f4d293397b6914a8bb76fb2c4421
- Full Text :
- https://doi.org/10.1016/j.jphotobiol.2016.05.012