In the first step, 1,2-propanediol
was converted to propionaldehyde at high temperature (170[degrees]C) as shown in (1).
a Reaction conditions: 10 wt% glycerol aqueous solution; H 2 pressure: 6 MPa; catalyst weight: 4 g; reaction temperature: 513 K; LHSV: 0.9 h -1 b1,2-PD = 1,2-propanediol
; 1-PO = 1-propanol; EG = ethylene glycol; EtOH = ethanol; MeOH = methanol
In conclusion, vitrification of GV stage oocytes in 6 M 1,2-propanediol
was more effective.
(dagger)Butyric acid; methanediol diacetate; 1,1-ethanediol diacetate; 1,2-ethanediol diacetate; 1,2-propanediol
diacetate; 2-ethylhexyl acetate; 1,2-butanediol diacetate; and 1,3-propanediol diacetate in one lot of plasticizer (a substance sprayed on cigarette filters) (M.
Further, the epiphytic flora composed of hetero fermentative microorganisms implies a higher production of acetic acid and 1,2-propanediol
, which is later transformed into propionic acid (Muck, 2010).
More accurate determination of the quantity of ice crystallized at low cooling rates in the glycerol and 1,2-propanediol
aqueous solutions: comparison with equilibrium.
1C is 1,2-propanediol
, which is used as a solvent for barbiturate drugs (16).
Chemicals used were PAE CA 1920 (Ashland Water Technologies, Wilmington, Delaware), urea, dicyandiamide, sodium dodecyl sulfate (SDS), cetyltrimethylammonium bromide (CTAB), and 1,2-propanediol
(propylene glycol; Sigma-Aldrich, St.
Metabolism of propionate and 1,2-propanediol
absorbed from the washed reticulorumen of lactating cows.
(propylene glycol), diethylene glycol, and 1,2-butanediol were purchased from Fluka Chemie AG.