200
Table 6.5 Examples of the application of the ultrasound microextraction technique with deep
eutectic solvents as extraction solvents
Extraction medium/
target compounds
DES:HBA/HBD (molar
ratio)
Selected DES
References
Leave plants of
Chamaecyparis obtusa/
flavonoids: myricetin
and amentoflavone
Choline chloride/ethylene
glycol (1:2), choline
chloride/glycerol (1:2),
choline chloride/1,2butanediol (1:2), choline
chloride/1,3-butanediol
(1:2), choline chloride/1,4butanediol (1:2), choline
chloride/2,3-butanediol
(1:2), and choline
chloride/1,6-hexanediol
(1:2)
Choline chloride/1,4butanediol (1:5) with
35 vol % of water
Bi et al. (2013)
Sheep, bovine, and
chicken liver samples/
iron
Choline chloride/oxalic
acid (1:1), choline
chloride/ethylene glycol
(1:1), choline chloride/
glycerol (1:1), and choline
chloride/lactic acid (1:1,
1:2, 1:1.5, 2:1)
Choline chloride/lactic
acid (1:1) DES led to
the best recovery
(>95%) compared to
the other DES.
Yilmaz and
Soylak (2015)
Vegetable oil samples:
olive, almond, sesame,
and cinnamon/phenolic
acids: ferulic, caffeic,
and cinnamic acids
Choline chloride/ethylene
glycol (1:2) and choline
chloride/glycerol (1:2)
Choline chloride/
ethylene glycol (1:2)
Khezeli et al.
(2016)
Greek medicinal plants
(dittany, fennel,
marjoram, mint, and
sage)/polyphenols
Choline chloride/L-lactic
acid (1:3), sodium
acetate/L-lactic acid (1:3),
ammonium acetate/L-lactic
acid (1:3), glycine/L-lactic
acid (1:3), and water/
glycine/L-lactic acid
(3:1:3)
Natural deep eutectic
solvent with 80% (v/v)
water was better than
natural deep eutectic
solvent without water
Bakirtzi et al.
(2016)
Agri-food waste
biomass (lemon peels,
olive leaves, onion solid
wastes, red grape
pomace, spent filter
coffee, and wheat bran)/
polyphenols
Choline chloride/glycerol
(1:3), sodium acetate/
glycerol (1:3), and sodium
potassium tartrate/glycerol/
water (4:1:5 and 3:1:5)
Natural deep eutectic
solvent tested was as
90% (v/v) in water
Mouratoglou
et al. (2016)
(continued)
L. Nakhle et al.