METHOD FOR PREPARING HIGH-STABILITY LIQUID BLUEBERRY ANTHOCYANINS

摘要

The invention relates to a method for preparing high-stability liquid blueberry anthocyanins, belonging to the field of food processing. A method for preparing high-stability liquid blueberry anthocyanins comprises the following process steps: adding graphene oxide and chitosan to an MES buffer solution at room temperature, mixing homogeneously and adding EDC and NHS sequentially, reacting to obtain a first solution, adding dry blueberry anthocyanin powder to the first solution, adjusting pH to 4.5-5.0 and mixing homogeneously to obtain a second solution, and treating the second solution at 350-420 MPa and 2-4°C to obtain the product. The method for increasing the stability of blueberry anthocyanins provided by the present invention uses dry blueberry anthocyanin powder as a raw material and adds graphene oxide combined with chitosan compound as an anthocyanin stabilizer, thereby increasing the stability of blueberry anthocyanins during processing and production.