Vitamin and carotenoid powder and its preparation method and application

A vitamin and carotenoid powder comprising a vitamin and carotenoid microcapsule and a physical gel protection film surrounding an outer surface of the vitamin and carotenoid microcapsule;

• wherein the vitamin and carotenoid microcapsule comprises the following compositions of parts by weight:
• vitamin and carotenoid as a core material of the microcapsule:
• 10.9-36.5 parts;
• antioxidant A:
• 0.1-1 part;
• and
• water soluble colloid as the outer surface of the microcapsule:
• supplemented to 100 parts;
• wherein the vitamin and carotenoid in the vitamin and carotenoid microcapsule are at least one of vitamin A palmitate, vitamin A acetate, vitamin D3, vitamin K1, β-carotene, astaxanthin, lycopene, canthaxanthin and lutein;
• wherein the antioxidant A is vitamin C, vitamin C sodium salt, iso-vitamin C or iso-vitamin C sodium salt;
• the water soluble colloid is starch octenyl succinate, or acacia;
• wherein the physical gel protection film is made from a super-molecular system;
• the super-molecular system consists of compositions of the following parts by weight:
• vitamin and carotenoid
• 10.9-36.5
• parts;
• antioxidant A
• 0.1-1
• part;
• and
• water soluble colloid
• supplemented to100 parts.
• wherein the vegetable oil is at least one of rape oil, maize oil, sunflower seed oil, and peanut oil;
• wherein the gel is a mixture of γ-oryzanol and β-rhamno;
• wherein the antioxidant B is butylated hydroxytoluene (BHT) or tert-butylhydroquinone (TBHQ);
• wherein the physical gel protection film is formed by a process as follows:
• thoroughly suspending the vitamin and carotenoid microcapsule in a fluidizing air through ventilation;
• then spraying the super-molecular system on the outer surface of the vitamin and carotenoid microcapsule when the super-molecular system is hot to form the physical gel protection film;
• wherein the physical gel protection film is an inverted helical tubular structure formed by constituents of the super-molecular system through crystallization or self-assembly during cooling;
• wherein the physical gel protection film blocks gaps and pores on the outer surface of microcapsule to prevent contact and reaction between oxygen coming in from the gaps and pores on the outer surface of microcapsule, and prevents outward migration of the vitamin and carotenoid through the physical gel protection film, to achieve an improved stability of the vitamin and carotenoid such that, when the vitamin and carotenoid powder is sealed for storage under the temperature of 40° C±2° C. and humidity of 75%±5% for 6 months, and has a reduction rate.