Calendula yellow pigment extraction method

An extraction method and technology of calendula, applied in chemical instruments and methods, bulk chemical production, azo dyes, etc., can solve the problems of insufficient color, small proportion and high cost

Inactive Publication Date: 2010-06-30
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Compared with foreign countries, the production of natural pigments in my country has the phenomenon of high cost, low extraction rate, insufficient color and low quality of pigments.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0008] Example 1

[0009] Adding 400 g of dried marigold flower particles to 5000 mL of 95% industrial ethanol, ultrasonicating for 60 minutes (ultrasonic 4 s, gap 1 s, power 1100 W, rotating speed 1100 rpm), extract 2 times to obtain 134.8 g of extract.

[0010] Supercritical conditions: Instrument model: HA121-50-01, Jiangsu Nantong Instrument Factory, pressure 45.0MPa, temperature 47℃, extraction time: 130min, CO 2 Flow rate: F16.0ml / min, extract 1 time.

[0011] Take 20g of the dried flower granule extract extracted by ultrasonic circulation, mix it with 180g diatomaceous earth and perform supercritical extraction to obtain 7g of marigold yellow pigment mainly containing lutein ester, and ultrasonically elute the diatomaceous earth with 95% industrial ethanol From the residue, 8.64 g of marigold yellow pigment mainly containing quercetin marigold was obtained.

Example Embodiment

[0012] Example 2

[0013] The dried calendula flower granules were replaced with calendula, and other conditions were the same as in Example 1. The calendula yellow pigment 6.8g mainly containing lutein ester and the marigold yellow pigment 8.3 mainly containing quercetin marigold were prepared. g.

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PUM

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Abstract

The invention discloses a calendula yellow pigment extraction method; the calendula or dry calendula granules are used as raw material, calendula paste is extracted by ethanol used as extractant, calendula yellow pigment which mainly contains lutein ester is extracted by a supercritical carbon dioxide extractor for paste by taking kieselguhr as dispersing agents, the extracted residue is eluted by the ethanol, and the eluent is concentrated and dried to obtain the calendula yellow pigment which mainly contains quercitrin patuletin.

Description

technical field [0001] The invention relates to a method for extracting calendula yellow pigment. Background technique [0002] Food coloring includes two types of synthetic coloring and natural coloring. Although chemically synthesized food coloring has bright color and good stability, it has gradually exposed its negative impact on human health, and some even have serious side effects such as carcinogenicity, such as the Sudan Red incident that has attracted much attention, and the recent related artificial coloring (sunset Yellow, tartrazine, etc.) toxicity comparable to leaded gasoline, seriously affecting children's health reports, once again sounded the alarm for human use of synthetic pigments. Natural pigments have attracted the attention of many countries due to their unique advantages such as low toxic and side effects and certain health and dietary effects on the human body. At present, all countries are actively committed to the research and development of plan...

Claims

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Application Information

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IPC IPC(8): A23L1/275A23L1/28A23L1/30A23L5/43A23L33/105C09B61/00C09B67/54
CPCY02P20/54
Inventor 师彦平戚欢阳许丽卫
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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