Method for producing microencapsulated anthocyanin powder from the calyx of Hibiscus sabdariffa L.

Abstract

The invention relates to a method for producing anthocyanin microencapsulated powder from the calyx of Hibiscus sabdariffa L., comprising: i) mixing an anthocyanin microencapsulated mixture consisting of an anthocyanin-rich extract from the calyx of Hibiscus sabdariffa L. and a mixture of maltodextrin, gum arabic, and guar gum; in which the volume ratio between the calyx extract and the encapsulating mixture is between 5:1 and 3:1; at room temperature for 20 to 60 minutes, obtaining an anthocyanin microencapsulated mixture; ii) spreading the anthocyanin microencapsulated mixture from Step i) evenly on a drying tray in a refractometer, and drying at a temperature between 85°C and 95°C for 10 to 30 minutes; iii) After drying and grinding, collect the mixture and obtain a powder of microencapsulated anthocyanin active ingredients from the calyx of the hibiscus flower.