Method for manufacturing purple corn anthocyanin

Abstract

The invention provides a preparing method of purple corn cyanidin, using purple corn plant as material, first hydrolysis of material by cellulase, regulating pH value by citric acid in the hydrolysis process; then leaching by adding water and / or alcohol, or alcohol water solution in acidic environment which maintaining by citric acid leaching system; separating the leached material and collecting extracting solution; condensing the extracting solution as required to get purple corn cyanidin extracting solution; and, controlling temperature lower than 70 DEG C in whole manufacture process. Adding beta-cyclodextrin or maltodextrin, spray drying to get microcapsule product containing purple corn cyanidin. By using the method of this invention, purple corn cyanidin has high extractability, and obtained products at least contain more than six kinds of anthocyanin or derivant components thereof.

Description

technical field

[0001] The invention provides a method for producing purple corn anthocyanins, in particular to a method for extracting anthocyanins from materials such as purple corn plant stalks, bract leaves or cobs. Background technique

[0002] Purple corn refers to the general term for corn crops whose grain color is black, purple, blue, and black. It is also called black corn and is a plant rich in anthocyanin. Anthocyanins are a class of water-soluble pigments widely present in plants, and are the coloring substances of plants, usually a mixture of various anthocyanins and their derivatives. For example, purple corn plants contain various anthocyanins and their derivatives such as cyanidin, geranium pigment, paeoniflorin, etc., and these anthocyanins and their derivatives all belong to anthocyanins. Since anthocyanins belong to flavonoid compounds, they have a strong antioxidant effect, can remove free radicals in the body, reduce the activity of oxidases, improve t...

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