Introduction Fatty acids FAs are important materials in various industrial fields such as emulsifiers, adhesives, surfactants, food, and personal care, existing naturally as triglycerides TGs in oils and fats 1. There are many routes to release FFAs from TGs such as acidic hydrolysis, alkaline hydrolysis, high-temperature steam hydrolysis and enzymatic hydrolysis 2, 3. Among these routes, enzymatic hydrolysis is a preferable way to promote the quality of the hydrolyzed product. The enzymatic hydrolysis is performed under milder condition lower temperature and pressure in comparison with acidic or alkaline hydrolysis. Thus, it can avoid some undesirable reactions and certain disadvantages, which will affect the color of products 2, 4. Moreover, enzymatic hydrolysis requires no chemical reagents, what s more, the reusability of enzyme 2. Lipases triacylglycerol ester hydrolases, EC 3.1.1.3 are enzymes that catalyze hydrolysis of ester bonds of triacylglyerols to diacylglycerols DAGs , monoacylglycerols MAGs , glycerol and FAs 5. The hydrolysis could be per