Technology for rapidly preparing 25% anthocyanidins from cowberry

Abstract

The invention relates to a technology for rapidly preparing 25% anthocyanidins from cowberry. The technology comprises the following steps: 1, crushing the cowberry, adding an acid solution, and mixing to obtain a mixed solution; 2, allowing the mixed solution to go through a high-voltage pulse electric field to obtain an extract solution; 3, filtering the extract solution to obtain a fine filtrate; 4, concentrating the fine filtrate to obtain a concentrate; 5, adsorbing the concentrate with a resin, and eluting to obtain a target component eluate; and 6, concentrating and drying the target component eluate to obtain the 25% anthocyanidins. The technology has the advantages of rapid extraction speed, high extraction rate, high purity of effective components of an extract product, energy saving and environmental protection, short production period, and low production cost.

Description

technical field [0001] The invention relates to a process for rapidly preparing 25% anthocyanins from lingonberries. Background technique [0002] Anthocyanins are one of the main pigments that constitute the color of petals and fruits. They are water-soluble pigments and belong to flavonoids in phenolic compounds. The basic structure consists of two benzene rings connected by a 3-carbon unit (C6-C3-C6). Molecular weight: 287.246, molecular formula: C 15 h 11 o 6 . As a natural food coloring, anthocyanins are safe, non-toxic, rich in resources, and have nutritional and pharmacological effects. They have great application prospects in food, health products, and medicine. [0003] In the prior art, the method for extracting anthocyanins from lingonberry is: extraction (with 50% ethanol at pH 2 as solvent, heating and leaching three times, the leaching temperature is 70°C, and the solvent consumption for the three times is 8BV, 6BV, 4BV, the time is 60min, 30min, 30min re...

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Problems solved by technology

In the extraction process of this technology, the juice is squeezed first, and then the temperature is raised to extract, which takes a long time, consumes a lot of energy, and the extraction is incomplete, and the process of squeezing the juice and heating the extraction results in high content of impurities in the extract, which increases the impurity removal in the subsequent treatment. The difficulty of product quality is difficult to be guaranteed; the extraction solvent used is 1-10% acid-water solution, and the verified test data shows that the acidity is too strong, which is not conducive to the extraction of anthocyanins and the stability of product quality; adsorption separation The selection of resins are all ordinary resins for pigment products, and the effect of separation and removal of impurities is average; the methanol that may be used in elution is a volatile and toxic reagent, which pollutes the environment and will cause health damage to operators. ; Concentration and drying use traditional equipment, which takes a long time and consumes a lot of energy

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