The invention relates to a preparation method of a human
milk fat substitute. The method comprises the steps of: step 1) conducting an
acid hydrolysis reaction on a
raw material of high melting
palm stearin subjected to chemical interesterification and
alcohol leaching, and an acyl donor of
rapeseed oil
fatty acid by using Lipozyme RM IM as a catalyst, so as to reduce the total
palmitic acid content and increase the relative content of site-two
palmitic acid of the
raw material; and step 2) deacidifying an
intermediate product; and at the same time, calculating the amount of
sunflower seed oil,
rapeseed oil,
palm kernel oil,
algae oil and
microbial oil added to the
intermediate product according to the composition and distribution of fatty acids in human
milk fat, by a
grease adding model, so as to ensure composition and distribution of fatty acids in a final product meeting requirements of a human
milk fat substitute, as well as realize a maximum addition amount. The invention adopts two steps to produce the human milk
fat substitute, in order to reduce usage amount of free fatty acids in the
acid hydrolysis reaction; meanwhile, two times of oil additions increase yield. Therefore, the invention greatly reduces the cost, and achieves a more than doubled yield compared with a similar products with a similar cost.