September 11, 2019
12 Noon US CST
Improving overall cost-efficiency has always been an important driver for new developments; in edible oil refining, more reliable processes and technologies resulting in higher yield are continuously introduced.
Despite of high neutral oil losses, being quite reliable irrespective to crude oil quality, chemical refining is still appreciated; however, there is a clear interest in new developments for making it more attractive. Hydrodynamic cavitation is one of them. Specially designed hydrodynamic nano-reactors were developed and successfully introduced in edible oil processing; in chemical refining, the resulting effect is a reduction of acid and caustic soda consumptions and a less viscous soap stock allowing better separation and higher oil yield.
Physical refining was developed for higher acidity oils where chemical refining is not economically attractive. Degumming is sometimes difficult, with poor efficiency and high oil losses. Cost-efficient and stable phospholipases are commercially available allowing for improvement in degumming efficiency with less oil losses. In enzymatic water degumming, PLC converts the phospholipids into diglycerides and phosphate esters. Deep enzymatic degumming uses PLA and can be applied on crude or water degummed oils; all phospholipids are converted into free fatty acids and lyso-lecithin.
An alternative to enzyme degumming is the enzymatic wet gums de-oiling process. Principle is a phospholipase-assisted neutral oil recovery from gums obtained by water or acid degumming; PLA or PLC enzymes can be used, the wet gums being split into lyso-lecithin or phosphate ester and recovered oil. The main advantage of using PLC is that the recovered oil is low in FFA; fortunately, the high DAG content results in only small increase when recycled back to the crude oil. Higher yield increases may be expected by using combinations of PLC and PLA.
This webinar reviews all benefits of each processing alternative.