Oil soluble monascorubin prepared from alcohol soluble monascorubin and preparation method and application

The invention discloses oil soluble monascorubin prepared from alcohol soluble monascorubin and a preparation method and application. The preparation method comprises the following steps: fermenting bacillus coagulans to obtain fermentation liquor; then carrying out ultrafiltration twice on the fermentation liquor with an ultrafiltration membrane, the molecular cut off of which is 30 kDa, combining permeable liquor obtained by ultrafiltration twice, carrying out third time ultrafiltration with an ultrafiltration membrane, the molecular cut off of which is 360 kDa, and collecting concentrated liquor; mixing the concentrated liquor with plant grease uniformly, leaving the mixture to stand, and taking extraction liquor in the upper layer when layering is tend to be stable; and mixing the extraction liquor with the alcohol soluble monascorubin and uniformly stirring the mixture to obtain the oil soluble monascorubin. The oil soluble monascorubin is uniform and stable to color and suitablefor industrial fields suc