Skip to main content

Advertisement

Table 1 Effect of manner of ethanol addition on esterificationa

From: Two-step synthesis of fatty acid ethyl ester from soybean oil catalyzed by Yarrowia lipolytica lipase

    Mean esterification ± SD, %  
Addition method Ethanol:fatty acid
molar ratio
Time, hours Treatment Control Rate of increase, %
Three-step 2:1 3 60 ± 0.643 49.8 ± 0.493 20.5
Five-step 2:1 5 76.7 ± 0.794 51.5 ± 0.5 48.9
Ten-step 2:1 24 81.6 ± 0.6 54.1 ± 1.49 50.8
  1. aControl reaction used one-step addition of ethanol. Reaction system comprised 2.82 g of fatty acid, 580 × 2 μl of ethanol added in various ways, 0.33 g of immobilized lipase at 30°C and spun at 190 rpm. SD, standard deviation.