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The application discloses a kind of continuous flow photocatalytic decarboxylation preparation biological hydrocarbon method, belong to the technical field of biofuel preparation.The method includes the following steps: high fatty acid compound, hydrogen atom transfer catalyst and acridine photocatalyst are dissolved in organic solvent, and mixed solution is obtained;The mixed solution is passed into circulating continuous flow light reactor, and photocatalytic decarboxylation reaction is carried out at room temperature for 12-24 hours, and reaction liquid is obtained;Reaction liquid is separated by reduced pressure distillation, and the biological hydrocarbon compound after decarboxylation is obtained.The application uses continuous flow light reactor to strengthen mass transfer and heat transfer efficiency, solves the problem that light penetration depth is limited in traditional batch photoreactor, and reaction is not uniform;Metal-free catalytic system is used, and the use of noble metal and potential residual risk is avoided.The method has mild reaction condition, higher product yield, good atom economy, and for unsaturated high fatty acid, olefin configuration can be maintained before and after decarboxylation, and has good industrial application prospect.

The application relates to the field of food processing and discloses a synbiotic fermented donkey milk beverage and a preparation method thereof. The method takes freeze-dried donkey milk powder as raw material, adds water to a mass fraction of 12% for re-dissolution, adds a compound probiotic accounting for 4% of the total mass of the donkey milk liquid, uniformly mixes, homogenizes at 20 MPa for 40 s, sterilizes at 95 DEG C for 10 min, inoculates 3% mixed probiotic powder after the material liquid is cooled to 42 DEG C, and ferments at 42 DEG C for 7 h to obtain a fermented milk base. The base is diluted with distilled water at a mass ratio of 1:3, 6% sucrose and 0.4% food stabilizer are added and uniformly mixed, the mixture is subjected to secondary homogenization at 20 MPa and secondary sterilization at 95 DEG C for 15 min, and then the mixture is cooled to room temperature to obtain the synbiotic fermented donkey milk beverage. The application solves the problems of easy stratification and sedimentation, prominent fishy and rancid odor of natural donkey milk in the prior art, simultaneously makes up for the defects of low digestion utilization rate and insufficient functional activity of the product, and improves the high added-value industrial utilization level of donkey milk resources.