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Meeting MS&T23: Materials Science & Technology
Symposium Nanotechnology for Energy, Environment, Electronics, Healthcare and Industry
Presentation Title L-7: Optimization of Extraction Methods for Maximum Recovery of Quercetin and Total Flavonoids from Red Onion Peel Wastes
Author(s) Zeinab Jabbari Velisdeh, David Mills
On-Site Speaker (Planned) Zeinab Jabbari Velisdeh
Abstract Scope This study optimized the extraction conditions for achieving maximum recovery yields of quercetin and total flavonoids from red onion peel wastes using sequential microwave-ultrasound-assisted extraction. Response surface methodology (RSM) was employed to investigate five key factors influencing quercetin extraction yield. The optimal method involved 60 seconds of microwave irradiation and 15 minutes of sonication at 70 C, using 70% ethanol with a solvent-to-solid ratio of 30 mL/g. The temperature during ultrasound treatment emerged as a highly significant factor affecting recovery. The estimated maximum recovery yields for quercetin and total flavonoids from red onion peel waste were 10.32% and 12.52%, respectively, with predicted values (quercetin: 10.05%; total flavonoids: 12.72%) closely matching experimental results. Comparative analysis of extraction methods revealed the following recovery yields: ultrasound-microwave-assisted extraction (7.66% quercetin and 10.18% total flavonoids), ultrasound-assisted extraction (5.36% quercetin and 8.34% total flavonoids), and microwave-assisted extraction (5.03% quercetin and 7.91% total flavonoids).

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Coating and Embedding Selenide Nanocrystals for Optical Applications
Cool Coat: A Wearable Solution for Advanced Thermal Management
Development and Dissemination of Reference Materials of SWCNT Dispersions as Conductive Additive for Secondary Battery Electrode
L-6: Characterization of Aging Behavior and Chemistry of Silver Nanoparticle Ink for Aerosol Printing
L-7: Optimization of Extraction Methods for Maximum Recovery of Quercetin and Total Flavonoids from Red Onion Peel Wastes
L-8: Thermal Transport in Electrically Tunable Thermal Switches Based on Multilayer Graphene and CNT
Magnetism Induced in a New High-temperature Phase of MnBi Crystals Stabilized by Crystallographic Disorder
Materials and Devices for Room-temperature Quantum Memories and Sensors
Nanocomposite Mechanics Predicted for High Volume Fractions with Particle Contact Methods and Piezospectroscopy
Nanoparticles Against Various Types of Bacteria: A Concise Review
Nanoscale GDC Catalyst Infiltration for Mitigating Fuel Electrode Degradation in SOECs
Sustainable and Distinctive Access to Metal-Organic Frameworks

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