Ultrasound-Assisted Extraction of Total Polyphenols from Black Poplar (Populus nigra) and Evaluation of Antioxidant Potential
R. Conte, L. M. Deloss Gullich, D. Filippi, C. A. Pazinatto1, D. Bilibio, N. Carniel, M. A. Mazutti, Wagner Luiz Priamo, João Paulo Bender*
DOI:
Volume 4, Issue 1 | Pages: 25-30
Abstract
The main objective of this work was to investigate the extraction of total polyphenols from black poplar (BP)
(Populus nigra) and their antioxidant activity by 2,2-diphenylpicrylhydrazyl radical scavenging assay. Was
evaluated the following variables on extraction step: Temperature, plant-to-solvent ratio, ethanol percentage,
ultrasound power, and posteriorly obtained a model to represent total polyphenols content extracted. Total
polyphenols reached a maximum value of 103.6 mg gallic acid equivalents. (g of BP−1) and we concluded
that ethanol percentage, plant-to-solvent ratio, and ultrasound power presented significant effect on yield
these compounds. On the other hand, temperature had no significant effect indicating energetic relevance and
preservation of compounds. Polyphenols-enriched extracts showed antioxidant ranging from 30% up to 90%.
P. nigra is an important source of polyphenols suggesting various benefits to human health and use in food
products.
Keywords
Black poplar Ultrasound-assisted extraction Total polyphenols Antioxidant activity.References
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Citation
R. Conte, L. M. Deloss Gullich, D. Filippi, C. A. Pazinatto1, D. Bilibio, N. Carniel, M. A. Mazutti, Wagner Luiz Priamo, João Paulo Bender*. Ultrasound-Assisted Extraction of Total Polyphenols from Black Poplar (Populus nigra) and Evaluation of Antioxidant Potential . J Appl Pharm Sci. 2016; 4(1):25-30.