A kind of deep processing method of lutein extract

A technology of deep processing of lutein, applied in the direction of organic chemistry, can solve the problems of insufficient use of filtrate, low solvent residue, and difficulty in obtaining crystals, so as to speed up the formation of crystal nuclei, simplify operation, and reduce crystallization time Effect

Active Publication Date: 2018-10-30
CHENGUANG BIOTECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solvent residue of lutein crystals obtained by this method is low,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] Example 1: The specific process of the deep processing method of the lutein extract is as follows.

[0024] Take 100kg of lutein extract with a total carotenoid content of 16.20wt%, add 100L of 95vol% ethanol solvent, heat to 80℃ and stir for 30min to fully dissolve the extract; add 50L of 45wt% NaOH solution, keep warm at 80℃ Saponification for 4 hours: the first hour has a flow rate of 25L / h, and the subsequent hour has a flow rate of 8.3L / h. Add 400L of pure water with a conductivity of 40μs / cm and a temperature of 70°C to the saponification solution, mix it with a mixing pump and add it to the separator, stir for 30min, and filter. The filter cake was washed with 200L of pure water at 70°C and then dried under reduced pressure to obtain 15.3 kg of lutein crystals with a total carotenoid content of 90.6 wt%. The soap-containing filtrate was decompressed to remove the ethanol residue to 56ppm, and then passed through a mixing pump with a volume ratio of 1:1.5 with dichl...

Example Embodiment

[0025] Example 2: The specific process of the deep processing method of the lutein extract is as follows.

[0026] Take 100kg of lutein extract with a total carotenoid content of 15.58wt%, add 200L of 96vol% ethanol solvent, heat to 75℃ and stir for 30min to fully dissolve the extract; add 80L of 60wt% NaOH solution, keep at 75℃ Saponification for 4.5 hours: The lye addition rate in the first hour is 40L / h, and the subsequent hourly addition rate is 11.4L / h. Add 450L of pure water with a conductivity of 60μs / cm and a temperature of 72℃ to the saponification solution, mix it with a mixing pump and add it to the separator, stir for 30min, and filter. The filter cake was washed with 100 L of pure water at 75° C., and then dried under reduced pressure to obtain 14.7 kg of lutein crystals with a total carotenoid content of 91.3 wt%. The soap-containing filtrate was decompressed to remove the ethanol residue to 96ppm, and then passed through the mixing pump with dichloromethane at a f...

Example Embodiment

[0027] Example 3: The specific process of the deep processing method of the lutein extract is as follows.

[0028] Take 100kg of lutein extract with a total carotenoid content of 16.07wt%, add 150L of 94vol% ethanol solvent, heat to 65℃ and stir to fully dissolve the extract; add 100L of 30wt% NaOH solution, heat preservation and saponification at 65℃ 6 hours: The lye addition rate in the first hour is 52L / h, and the subsequent hour addition rate is 9.6L / h. Add 600L of pure water with a conductivity of 10µs / cm and a temperature of 80℃ to the saponification solution, mix it with a mixing pump and add it to the separator, stir and filter. The filter cake was washed with 300 L of pure water at 80° C., and then dried under reduced pressure to obtain 13.2 kg of lutein crystals with a total carotenoid content of 92.0 wt%. The soap-containing filtrate is decompressed to remove the ethanol residue to 100ppm, and then passes through a mixing pump with a volume ratio of 1:2 with dichlorom...

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Abstract

The invention discloses a deep processing method of a lutein extract. The method comprises the following steps: taking a light-alcohol solvent as an extracting agent for the lutein extract, and performing extracting, saponification by adding an alkaline liquor, crystallization and filtering on the lutein extract to obtain a filter cake and a soap-containing filtrate; performing water washing and drying on the filter cake to obtain high-purity lutein crystals; desolventizing the soap-containing filtrate and then mixing the desolventized soap-containing filtrate with dichloromethane, and separating the mixture to obtain a water phase and a solvent phase; concentrating the water phase to obtain fatty acid soap; washing the solvent phase with water and then adding Vc to the solvent phase and stirring evenly, and concentrating to obtain low-content lutein crystals. The deep processing method of the lutein extract is used for further purifying the deep processing method of a lutein extract; the low-content lutein crystals are collected, the total content yield of the crystals can be increased to 97% or higher, and the by-product fatty acid soap can be obtained; as Vc is added to the soap-containing filtrate, the content losses in the concentration and flavor removal process can be reduced and the single-step yield of the crystals produced from the soap-containing filtrate is above 17%. The deep processing method of the lutein extract is simple to operate, the yield of the product is high and the by-product can be reutilized; as a result, the deep processing method is suitable for industrial production.

Description

technical field [0001] The invention relates to a deep processing method of lutein extract. Background technique [0002] Lutein, also known as "plant lutein", exists together with zeaxanthin in nature. It is the main pigment that constitutes the macular area of ​​the human eye. It has the characteristics of bright color, health care, non-toxic, and high safety. It can reduce eye diseases. , cardiovascular disease, cancer incidence, so lutein is widely used in food additives, feed additives, cosmetics, health care products and other fields. Lutein is widely found in vegetables, fruits, and some algae, and the content of lutein in marigold petals is the highest. [0003] At present, the domestic primary processing technology for preparing lutein extract has also formed a scale, and there are many documents and patents reporting lutein extraction and separation methods, such as the use of tetrahydrofuran in the US patent document US6262284B1 as raw material for marigold flowe...

Claims

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Application Information

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IPC IPC(8): C07C403/24
Inventor 王旭程远欣冀云武刘新朝侯丽娟
Owner CHENGUANG BIOTECH GRP CO LTD
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