3 results about "Protocatechuic aldehyde" patented technology

This invention relates to the field of biomedical technology and discloses a method for preparing and applying copper-manganese coordinated taurine-Schiff base nanopolymers. The preparation method includes: dissolving taurine and an equimolar amount of sodium hydroxide in anhydrous ethanol, heating under reflux, and adding protocatechuic aldehyde dissolved in anhydrous ethanol dropwise while stirring; heating under reflux and stirring; a yellow solid precipitates from the reaction solution, which is then transferred to a refrigerator to further precipitate the solid, and collected to obtain taurine-Schiff base; dissolving copper chloride and manganese chloride in an aqueous solution of polyvinylpyrrolidone, adding taurine-Schiff base while stirring, adjusting the pH of the reaction solution to alkaline with an alkaline solution, stirring, and collecting to obtain copper-manganese coordinated taurine-Schiff base nanopolymers; ultrasonically dispersing the nanopolymer in ultrapure water, adding an anti-angiogenic drug, stirring, and collecting to obtain drug-loaded copper-manganese coordinated taurine-Schiff base nanopolymers. This invention achieves effective local treatment and immune system activation, while improving treatment safety.

The present application relates to ascorbate peroxidase and its coding gene and application. The ascorbate peroxidase of Fritillariae Pallidicaulis Herb is disclosed for the first time, which has the ability of synthesizing protocatechuic aldehyde and can catalyze p-hydroxybenzaldehyde to generate protocatechuic aldehyde. The present application also discloses polynucleotide coding the ascorbate peroxidase, vector and host cell expressing the ascorbate peroxidase, and method for producing protocatechuic aldehyde.