A fat or oil can be stabilized by heating to a minimum of 60~70℃ and agitating sufficiently for 10~15 minutes to dissolve the antioxidant. The agitation (not so vigorous that excessive air is entrapped) should be continued for an additional 20 minutes to ensure uniform distribution.

Concentrated solutions of antioxidant can be prepared by dissolving TBHQ in a small quantity of fat or oil (or 95% ethanol) to make a 5~10% TBHQ solution. Directly introduce this pre-made solution into the oil and fat. Agitation is necessary for uniform distribution.

The concentrated TBHQ solution made from concentrate method is fed into the inlet to the circulating pump. A stainless-steel proportioning pump is used to meter the TBHQ concentration into the oil at a desired rate. Turbulence should be sufficient to thoroughly mix TBHQ in the oil before the mixture reaches the storage tank.

Food products such as nuts, preserved meet products, fish products can be sprayed directly with a dilute TBHQ solution. The concentration of TBHQ solution should be adjusted as required depending on the type of food product. Generally, 0.02% TBHQ ethanol solution is suggested and make sure antioxidant is spread uniformly.

Blend and mix directly with solid ingredients.