The invention discloses a preparation method of
astaxanthin nanoemulsion, and belongs to the field of
astaxanthin, the preparation method comprises the following steps: S1, heating 120-150 parts by
mass of
haematococcus pluvialis oil to 28-30 DEG C, keeping the temperature, and continuously stirring for later use to obtain a component A; s2, dissolving 4-7 parts by
mass of a
polygonatum odoratum extract and 3-5 parts by
mass of a black
pepper extract in 5-20 parts by mass of
purified water, and heating to 28-30 DEG C to obtain a component B; s3, emulsification treatment: mixing the component A and the component B according to a
mass ratio of 1: (1-2), adding a compound emulsifier which is 1-3 times of the mass of the mixture, uniformly stirring, treating by using a high-speed dispersion
homogenizer, and then treating by using an ultrasonic
cell disruptor; when a high-speed dispersion
homogenizer is used for treatment, high-speed shearing dispersion is carried out for 9-15 min at the speed of 10000 r / min to 12000 r / min; when an ultrasonic
cell disruptor is used for treatment,
ultrasonic dispersion is carried out for 2 min at the power of 100 W, then
ultrasonic dispersion is carried out for 4 min at the power of 200 W, the mode of working for 1 s and intermittent for 1 s is selected, and the
astaxanthin nanoemulsion is obtained. The nano-
emulsion prepared by the invention is good in stability and high in
bioavailability.