3. International Conference on Research of Agricultural and Food Technologies, Adana, Türkiye, 4 - 06 Ekim 2023, cilt.1, ss.23, (Özet Bildiri)
Pollutions in the fermentation broths caused by organic acid production is a significant problem.
Reactive extraction of organic acids from the aqueous medium is a preferable method comparing
with other conventional and insufficient or modern and expensive ways. Major advantages of reactive
extraction are wide range of extractants, utilizing at various temperature or pH conditions, higher
effectiveness, shorter process times and lower cost and equipment requirements.
Using diluents in reactive extraction processes is also another advantage for decreasing cost,
especially. Although different diluents alone cannot be effective enough, concomitant use of an
extractant and a diluent may upgrade the process via modifying the physicochemical features such
as viscosity, density, surface tension, hydrophilicity/hydrophobicity, polarity, bonding, functional
groups, etc.
Diluents for reactive extraction can be inert or active. While the compounds without functional
groups are generally inert diluents, other organic compounds are active diluents. Ionic liquids (ILs)
that consist of organic cations and organic/inorganic anions can be designed in a broad variety. This
type of diluents is choosing for different processes even though their higher prices. Deep eutectic
liquids are the newer, green electrolyte class and have some benefit compared by ILs. For example,
being less harmful, less expensive, having possibility of produced with different quaternary
ammonium and metallic salts in different forms like gels. Vegetable oils can be used to dilute the
extractant. Thanks to their hydrocarbon chains in various lengths, these low-polarity organic
compound mixtures do not damage to the microorganisms using in the processes. They also keep the
efficiency above.