Location: Plant Polymer ResearchTitle: Effects of water addition and microwave on Natural Deep Eutectic Solvents (NADES) and their extraction properties
|GOMEZ, ANALIA - Universidade De Sao Paulo|
|TADINI, CARMEN - Universidade De Sao Paulo|
Submitted to: American Chemical Society National Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 8/26/2019
Publication Date: 8/27/2019
Citation: Gomez, A., Biswas, A., Tadini, C.C., Cheng, H.N. 2019. Effects of water addition and microwave on Natural Deep Eutectic Solvents (NADES) and their extraction properties. American Chemical Society National Meeting. [abstract].
Technical Abstract: One of the common processes employed in food preparation and manufacturing is the extraction of specific components from agro-based materials. Although many extraction methodologies are known, continued improvements are still desirable. A recent new development is the use of natural deep eutectic solvents (NADES) for extraction. In this work, we studied NADES/water combinations and found them to be viable alternatives to conventional solvents for extraction of polar ingredients in foods. Moreover, we found microwave heating to facilitate the preparation of NADES/water solvents, decreasing the heating time by 25% or more. Selected NADES/water systems were characterized with respect to viscosity, refractive index, electrical conductivity, water activity, and nuclear magnetic resonance. In addition, we utilized the microwave-assisted process to carry out the extraction of non-starch polysaccharides in over-ripe or rejected bananas. NADES/water solvents were shown to be more effective than conventional solvents (H2O and ethanol) for this extraction. The microwave process was found to be efficient, saved time, and decreased energy usage. Furthermore, the NADES/water solvents are eco-friendly, inexpensive, chemically inert, and biodegradable. Thus, the combination of NADES/water/microwave is a promising “green” method that can provide improved extraction in food applications.