This invention relates to DHA algal oil preparation technology, specifically to a water-in-oil
microemulsion DHA algal oil, its preparation method, and its application. The method includes the following steps: mixing
walnut oil, medium-chain triglycerides,
vitamin E, and phospholipids, and heating in a water bath to obtain an
oil phase; dissolving DHA algal oil, γ-
aminobutyric acid,
steviol glycosides,
sodium caseinate,
xanthan gum,
Alpinia oxyphylla, hawthorn, yam,
Codonopsis pilosula, bovine
spleen peptide, phospholipids, and chicken
gizzard lining in
purified water and dispersing to obtain an aqueous phase; adding the
oil phase to the aqueous phase to form a crude
emulsion, and homogenizing to obtain an encapsulated
emulsion. Compared with existing technologies, this invention solves the problems of poor stability, poor
oxidation resistance, and a noticeable
fishy odor in DHA algal oil beverages. The DHA algal oil beverage prepared by this method exhibits excellent
thermal stability and freeze-thaw stability; it shows significant tolerance to chemical factors such as acids, alkalis, and salts; and it possesses excellent long-term storage stability.