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Spray-Drying Microencapsulation of Bioactive Compounds from Lemon Verbena Green Extract
Francisco Javier Leyva-Jiménez1, Jesús Lozano-Sánchez1,2, María de la Luz Cádiz-Gurrea1,3
1Functional Food Research and Development Center, Health Science Technological Park, Avenida del Conocimiento s/n, E-18016 Granada, Spain.
Foods (Basel, Switzerland)
|October 29, 2020
Summary
Microwave-assisted extraction and spray drying of Lippia citriodora phytochemicals were optimized. Inulin carriers improved powder recovery, while maltodextrin enhanced encapsulation efficiency for antioxidant compounds.
Area of Science:
- Food Science and Technology
- Phytochemistry
- Chemical Engineering
Background:
- Lippia citriodora possesses valuable phytochemicals with antioxidant and anti-obesogenic properties.
- Efficient recovery and stabilization of these bioactive compounds are crucial for health applications.
Purpose of the Study:
- To optimize microwave-assisted extraction and spray drying of Lippia citriodora phytochemicals.
- To compare maltodextrin (MD) and inulin (IN) as carriers for microencapsulation.
- To evaluate the impact of spray drying parameters on process yield, encapsulation efficiency, and compound recovery.
Main Methods:
- Microwave-assisted technology for phytochemical extraction.
- Spray drying microencapsulation optimized using Response Surface Methodology (RSM).
- High-Performance Liquid Chromatography coupled to Time-of-Flight Mass Spectrometry (HPLC-ESI-TOF-MS) for analysis.
Main Results:
- Inulin (IN) as a carrier increased powder recovered and recovery of polar compounds.
- Maltodextrin (MD) as a carrier resulted in higher encapsulation efficiency (EE%).
- Optimized spray drying parameters influenced yield, EE%, and recovery.
Conclusions:
- Both maltodextrin and inulin are viable carriers for Lippia citriodora phytochemicals, with distinct advantages.
- Inulin enhances the recovery of bioactive compounds, while maltodextrin offers superior encapsulation efficiency.
- Optimized microencapsulation preserves the health benefits of Lippia citriodora phytochemicals for potential use in functional foods or supplements.
