Optimization of ultrasound-assisted extraction of polyphenols from maize filaments by response surface methodology and its identification
DOI:
https://doi.org/10.5073/JABFQ.2015.088.022Keywords:
Maize filaments, Ultrasound-assisted extraction, polyphenols, identificationAbstract
Maize filaments (MF) are the outer thread-like part of corn, which are widely used in traditional and official medicine. In the current study, central composite design (CCD) was used to investigate the effect of process variables on polyphenols contents from MF by ultrasound-assisted extraction (UAE). Results showed that the obtained optimal UAE conditions were as follows: extraction power of 520.01 W, ethanol concentration of 61.08%, and a solvent-to-material ratio of 26.83 mL/g for polyphenols extraction. These experimental values under optimal conditions were consistent with the predicted values with polyphenols content of 7.1±0.015 mg/g. Sixteen phenolic compounds, including gallic acid, catechin, picatechin, hyperoside etc were identified in MF polyphenols extractions by HPLC-MS/MS method. The antioxidant activity of the MF polyphenols extractions were also studied, which showed that MF polyphenols extractions have excellent radical scavenging ability for ABTS radicals, •OH, DPPH radicals and •O2-, and 42.56 ± 1.24% of lipid oxidation inhibition.
Downloads
Published
Issue
Section
License
From Volume 92 (2019) on, the content of the journal is licensed under the Creative Commons Attribution 4.0 License. Any user is free to share and adapt (remix, transform, build upon) the content as long as the original publication is attributed (authors, title, year, journal, issue, pages) and any changes are labelled.
The copyright of the published work remains with the authors. If you want to use published content beyond what the CC-BY license permits, please contact the corresponding author, whose contact information can be found on the last page of the respective article. In case you want to reproduce content from older issues (before CC BY applied), please contact the corresponding author to ask for permission.