The invention relates to a preparation method and application of antibacterial and
starch aging resistant biphase gel, and belongs to the field of
food processing. The preparation method is characterized by comprising the following steps: preparing oleogel from
monoglyceride,
corn oil and
curcumin, preparing hydrogel from wheat
bran araboxylan and tea
polyphenol, mixing the oleogel and the hydrogel, adding
lecithin, and homogenizing at a high speed to obtain the gel with a two-phase
system. The biphase gel produced by the invention has the characteristics of zero trans-fat, high
fiber content, simple preparation method and the like, realizes synergistic stability of oil and water phases, has both the
mechanical strength of oil gel and the
biocompatibility of hydrogel, can replace shortening in baked food, and has a wide application prospect. And the
shelf life of the baked product is prolonged through the synergistic effect of
antibiosis and
starch aging resistance. The
mass ratio of the
oil phase to the water phase in the biphase gel is 1: 3-3: 1, the addition amount is 10-20% of the
mass of the flour, the bacteriostasis rates on
penicillium and
rhizopus are 60-85% and 65-90% respectively, the
starch crystallinity in the bread storage process is reduced by 10-20%, and the
shelf life of the bread is prolonged by 10-20 days.