The invention belongs to the technical field of powdered oil and fat and
processing, and particularly relates to a preparation method of low
saturated fatty acid powdered oil and fat capable of regulating and controlling beta'
crystal form, which comprises the following steps: S1, mixing oil and fat with
palm stearin, dehydrating and cooling; then,
immobilized lipase is added for reaction, and low-
saturated fatty acid ester exchange
grease is obtained; s2, mixing the obtained low
saturated fatty acid ester exchange
grease with a gelator to prepare an
oil phase; s3, dissolving a
wall material and an emulsifier in water to form a water phase; and S4, mixing the
oil phase and the water phase in proportion to form an
emulsion, and
drying to obtain the low saturated
fatty acid powdered oil. Compared with the prior art, by integrating enzymatic
transesterification and oleogel technologies, physical and chemical
grease structuring technologies are fused, on the basis of ensuring zero trans-
fatty acid, baking performance is optimized through accurate
crystal form regulation and control, the industry blank of zero trans-
fatty acid-high beta'
crystal form 'is filled up, and the method is suitable for industrial production. The method has a good application prospect in the field of healthy baked food development and
processing.