Issue |
BIO Web Conf.
Volume 45, 2022
68th Scientific Conference with International Participation “FOOD SCIENCE, ENGINEERING AND TECHNOLOGY – 2021”
|
|
---|---|---|
Article Number | 02008 | |
Number of page(s) | 6 | |
Section | Food Chemistry, Microbiology and Biotechnology | |
DOI | https://doi.org/10.1051/bioconf/20224502008 | |
Published online | 04 February 2022 |
Optimization of methanol extraction parameters for total flavonoids from onion processing waste
1 Department of Engineering Ecology, University of Food Technologies, Plovdiv, Bulgaria
2 Department of Heat Engineering, University of Food Technologies, Plovdiv, Bulgaria
* Corresponding author: milena_nikolova86@abv.bg
Onion processing generates large amount of solid waste. Due to the high amount of biologically active substances the onion processing residues could be interesting source of value-added functional ingredients. In this study the response surface methodology was applied to explore the possibilities of modelling and optimization of the methanol extraction of total flavonoids from onion processing waste. The extraction temperature, time and solvent concentration were first optimized employing Box-Behnken design and then the extraction efficiency was further assessed through kinetics. The optimal extraction conditions were determined to be 53oC, 66 min and 61% of methanol concentration. Data indicated that predicted (15.54 mgQE g-1 dw) and experimental (15.58±0.03 mgQE g-1 dw) values of total flavonoids were not significant different (p > 0.05). The kinetics and thermodynamic parameters of the extraction process were determined also.
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.