endoplasmic reticulum (ER) (Fig. 15) [253–255]. The elongation stage of
fatty acids occurs mainly in the membranes of the ER and due to their hydrophobic nature requires facilitated transport, since they are immiscible in the
cytoplasm [253, 255]. Upon their synthesis, the lipids may be stored within the
O
OH
HO
R 1
O
1-Monoacylglycerol
O
OH
O
R 2
O
R 1
O
1,3-Diacylglycerol
R 3
O
O
O
O
R 1
O
O
R 2
Triacyglycerol
O
OH
Myristic acid
O
OH
Palmitoleic acid
O
OH
Palmitic acid
O
OH
Oleic acid
O
OH
Stearic acid
O
OH
O
O
O
O
Byrsonic acid
O
O
OH
O
O
O
O
O
O
Oncidinol
Fig. 15 Nonvolatile lipids of floral oil. The general structure of mono-, di-, and triglycerol; the free
fatty acids most often found in floral oils, myristic, palmitoleic, palmitic, oleic, stearic, and
eicosenoic acid, and structure of byrsonic acid and oncidinol
732
E. D. Tölke et al.