Process for producing a nano resveratrol microemulsion system

A process for producing a nano resveratrol microemulsion system includes the steps of:

• (i) preparing a dispersal phase by dissolving resveratrol in an ethanol solvent in a ratio between mass of resveratrol:volumne of ethanol solvent as 8:10 by a stirrer at a speed of 300 to 500 rpm with heating to a temperature from 40 to 60° C. within 4 to 8 hours;
• (ii) preparing a carrier by heating a liquid PEG (polyethylene glycol) accounted from 40 to 60% by mass of the mixture of PEG and water to a temperature ranging from 60 to 80° C., then adding zeolite catalyst in a ratio by mass of 0.1 to 0.4% of mixture of PEG and water, stirring evenly;
• (iii) adding the carrier to the dispersal phase in a ratio by mass of 40:60, continuing heating the said dispersal phase to 100° C., stirring at a speed of 400 to 800 rpm;
• (iv) emulsifying as follows:
• when the temperature arrives at 100° C., adding Tween to the mixture of the carrier and dispersal phase in step (iii) in a ratio by mass of 40:60, continuing to stir at a speed of 500 to 700 rpm, at a temperature of 100° C. to 130° C., perform emulsification at speed of 2500 to 3500 rpm, combining stirring at a speed of 400 and 600 rpm, in vacuum, the reaction temperature is maintained at 150° C. for 3 to 5 hours, controlling the quality of resulting product by dissolving into water and measuring the transparency, if it fails then continuing heating and measuring this transparency every 30 minutes until it is observed to be transparent, the reaction is quenched, the temperature is decreased slowly until it is in the range of 40 to 60° C.;
• (v) filtrating the product by injecting through nanofilter system before filling-packaging.