Passiflora caerulea L fruit peel anthocyanin microcapsule and secondary embedding preparation method thereof

Abstract

The invention discloses a Passiflora caerulea L fruit peel anthocyanin microcapsule and a secondary embedding preparation method thereof. The secondary embedding preparation method comprises the steps: selecting Passiflora caerulea L fruit peel anthocyanin as a core material, selecting gelatin and Arabic gum as wall materials, and preparing a single-layer microcapsule wet capsule through a complexcoacervation method; adding nano SiO2 into distilled water at 60 DEG C, stirring for 30 minutes, carrying out ultrasonic treatment for 2 hours to obtain a dispersion liquid, adding Arabic gum into the dispersion liquid, and mixing and stirring for 30 minutes to obtain a nano SiO2 modified Arabic gum solution; and fully mixing the nano SiO2 modified Arabic gum solution with the single-layer microcapsule wet capsule, stirring at room temperature of 200 r / min for 30 min, and carrying out spray drying to obtain the Passiflora caerulea L fruit peel anthocyanin microcapsule. According to the invention, a secondary embedding method is adopted, and nano SiO2 modified Arabic gum is used as a second-layer wall material, so that the capsule wall structure is compact, and the defects that a single-layer microcapsule wall is insufficient in toughness and strength, poor in microcapsule stability, greatly influenced by environmental factors such as temperature, humidity and pH and the like are overcome.

Description

technical field [0001] The invention relates to the technical field of microcapsule preparation, in particular to a passion fruit peel anthocyanin microcapsule and a preparation method for secondary embedding thereof. Background technique [0002] Anthocyanins are a class of compounds formed by the combination of anthocyanins and sugars through glycosidic bonds, and are widely present in the cell fluid of flowers, fruits, stems, leaves and root organs of plants. As a natural pigment, anthocyanins are safe, non-toxic, and have many health functions for the human body. They have been used in food, health care products, cosmetics, medicine and other industries. However, the basic structure of anthocyanin is a diphenylbenzopyran cation, which lacks an electron in the structure, which makes it have a strong antioxidant activity, but due to the presence of hydroxyl and epoxy ions in its own molecular structure, the structure of anthocyanin is stable Poor resistance, susceptible t...

AI Technical Summary

Problems solved by technology

Single-layer microcapsules have certain defects, such as insufficient toughness and strength of the capsule wall, poor stability of the microcapsules, and are still affected by environmental factors such as temperature, humidity, and pH, etc.

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