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Method for extracting gardenia yellow pigment

A gardenia yellow pigment and extraction technology, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problems of high labor intensity, low production efficiency, unsuitable for industrial production, etc., to reduce labor intensity, The effect of improving production efficiency

Active Publication Date: 2012-05-02
HENAN ZHONGDA HENGYUAN BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the extraction process using the above method is complicated, the labor intensity is high, the extraction cycle is long, and the production efficiency is low, so it is not suitable for industrialized production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Take 5000kg of gardenia fruit and crush it into 20-mesh granules, send the gardenia powder into the horizontal rotary continuous extractor, add 15000kg of ethanol solution with a volume concentration of 60% to the system, turn on the solvent circulation pump to continuously grind Gardenia was sprayed, and the disc continuous dryer was started at the same time, the extraction temperature was controlled at 40°C, and the speed of the extractor was 3 hours / week. The vacuum degree is 0.08Mpa, and 1500 kg of crude gardenia yellow pigment with a color value of 45 is obtained. Ethanol is recovered during the concentration process, and the obtained ethanol is returned to the horizontal rotary continuous extractor for recycling. The extraction filter residue automatically falls into the buried scraper elevator to the disc continuous dryer to remove ethanol, collects the filter residue to obtain gardenia residue, and returns the recovered ethanol to the solvent circulation system f...

Embodiment 2

[0033] Take 5000kg of gardenia fruit and crush it into 10-mesh granules, send the gardenia powder into the horizontal rotary continuous extractor, add 12500kg of methanol solution with a volume concentration of 55% to the system, turn on the solvent circulation pump to continuously grind Gardenia is sprayed, the extraction temperature is controlled at 30°C, the speed of the extractor is 2.5 hours / week, the extract is continuously sent to the rotary thin film evaporator for concentration and recovery, the vacuum degree is controlled at 0.07Mpa, and the concentration temperature is 55°C , to obtain 1500kg of crude gardenia yellow pigment with a color value of 41.

Embodiment 3

[0035] Take 5000kg of gardenia fruit and crush it into 30-mesh granules, send the gardenia powder into the horizontal rotary continuous extractor, add 19000kg of ethanol solution with a volume concentration of 65% to the system, turn on the solvent circulation pump to continuously grind Gardenia is sprayed, the extraction temperature is controlled at 45°C, the speed of the extractor is 5.5 hours / week, the extract is continuously sent to the rotary thin film evaporator for concentration and recovery, the vacuum degree is controlled at 0.09Mpa, and the concentration temperature is 75°C , to obtain the crude product 1500kg of gardenia yellow pigment with a color value of 46.

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PUM

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Abstract

The invention provides a method for extracting gardenia yellow pigment, which comprises the following steps of: putting gardenia powder in a continuous extractor to carry out extraction, wherein the mass ratio of extracting solvent to gardenia powder in the continuous extractor is 2-4:1, the extraction temperature is 30-50 DEG C, and the rotation speed is 2-6 hours / revolution; continuously feeding the extracting solution into an evaporator to carry out the vacuum concentration, wherein the degree of vacuum is 0.06-0.09 MPa, and the concentration temperature is 50-80 DEG C; and collecting the concentrated solution to obtain the crude product of the gardenia yellow pigment. The method has simple working procedures, can reduce the labor intensity and shortens the extraction cycle to 2-6 hours, and the crude product of the gardenia yellow pigment has high color scale; and thus, the invention has the advantage of high production efficiency and is suitable for industrial production.

Description

technical field [0001] The invention relates to the field of traditional Chinese medicines, in particular to a method for extracting gardenia yellow pigment. Background technique [0002] Gardenia yellow pigment, also known as crocin, is a rare water-soluble carotenoid obtained by extracting, separating and drying the fruit of Rubiaceae gardenia, and is a natural food coloring. Gardenia yellow pigment has excellent reduction resistance and microbial resistance, and has a good dyeing effect on starch and protein; at the same time, gardenia yellow pigment is easily absorbed by the human body and can be converted into vitamin A in the human body. Therefore, Gardenia yellow pigment is a nutritional natural plant pigment. [0003] The existing production process of the gardenia yellow pigment is as follows: the original medicinal material of the gardenia is pulverized, followed by leaching and purification in sequence. Among them, extraction is an important process for the prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B61/00C09B67/10
Inventor 文雁君
Owner HENAN ZHONGDA HENGYUAN BIOTECH CO LTD