Aqueous Enzymatic Extraction of Lard and its Product Quality

Abstract:

Extraction of lard with aqueous enzymatic method was studied. Four proteases，Alcalase 2.4 L，Neutrase 1.5 MG，Flavourzyme 1 000 L and Protamex were evaluated for their efficiency in oil release，and Alcalase 2.4L was found to the most effective for oil-extraction. The optimal hydrolysis parameters for Alcalase 2.4L were hydrolysis time 2.0 h，temperature 55 ℃，pH 8.0，ratio of material to water 1 g∶1 mL and enzyme amount 1%（E/S），which resulted in an oil extraction yield of 96.82%. Lard obtained by the enzymatic extraction was superior to those by traditional methods according to physicochemical properties.