2015 Volume 23 Issue 3 Pages 33-40
In the manufacture of soap, as an alternative to the purchase of fatty acid feedstock,methods of making the fatty acids in-house from a lipid feedstock were studied. Specifically, parameter design was carried out for a reaction that uses enzymes to decompose beef tallow into fatty acids. A preliminary evaluation was performed by use of the omega transform with the yield rate as the characteristic value(experiment 1). Working from the results, a new evaluation based on the S/N ratio of the reaction rate was carried out with the reaction time as the signal factor and the degree of purity of the feedstock as a noise factor (experiment 2). A confirmation experiment appeared to show an improvement in the S/N ratio with nearly the same gain, although there were major effects due to the noise factor. When cost and loss were compared, it was found that a reduction in loss could be anticipated if the selected production conditions were used instead of the comparative conditions.
