Method for preparing crystal of lycopene and concentrate

A technology of lycopene and concentrate is applied in the field of food processing, which can solve the problems of low product purity, long process flow, increased loss, etc., and achieve the effects of high crystal purity, simple and easy process flow and easy operation.

Inactive Publication Date: 2005-10-26
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the huge equipment investment required by the supercritical fluid extraction technology and the higher operating costs limit the application in lycopene extraction, and the lycopene products obtained by using supercritical fluid extraction have low purity and low yield. not high
[0007] CN1298904A describes a method for producing lycopene with a purity of 10% from tomato paste, which uses water to stir, centrifugal dehydration, alkali washing, water washing, dry crushing, heating extraction, flash evaporation, crystallization, etc. to obtain lycopene crystals. The difference is that the product has low purity and the yield is only about 20%; CN1316468A discloses a method for separating and preparing high-purity lycopene from crude lycopene by high-speed countercurrent chromatography, and the product purity obtained by the method can reach 95% More than %, but using a variety of organic solvents, including highly toxic acetonitrile, chloroform, etc., while the production efficiency is low, the cost is high, the separation scale is limited, and it is not suitable for industrial production; IL107999 describes the production of lycopene oleoresin from tomato paste method, but did not obtain high-purity lycopene crystals; WO03/079816A1 announced a lycopene oleoresin with a lycopene content of 5-20% and a sugar content of less than 1%, and then purified to obtain a high-purity lycopene oleoresin In the method of 50% lycopene crystals, fi

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  • Method for preparing crystal of lycopene and concentrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Mix 100g of tomato paste with 200ml of sodium carbonate solution with a concentration of 0.5mol / L, and keep the temperature at 35°C for 40 minutes while stirring;

[0031] Then slowly add dilute sulfuric acid solution to neutralize and foam until the pH value of the solution is 4.0, and the mixed solution is centrifuged, and the rotating speed of the centrifuge is 5500 rpm;

[0032] Add 100ml of 95% ethanol to the centrifuged solid part, stir at 40°C for 10 minutes, centrifuge, the speed of the centrifuge is 6000 rpm, and the centrifuged ethanol solution recovers ethanol through vacuum distillation;

[0033] Add 200ml of acetone to the tomato paste residue obtained after alcohol treatment and centrifugal separation, extract at 50°C for 1 hour, and the stirring speed is 120 rpm, then suction filter the resulting mixed solution, and rinse the tomato paste residue with 30ml of acetone to obtain 210ml of extract, and the remaining tomato paste residue was extracted for the ...

Embodiment 2

[0037] Mix 100g of tomato paste and 200ml of sodium carbonate solution with a concentration of 0.1mol / L, and keep the temperature at 30°C for 30 minutes while stirring;

[0038] Then slowly add dilute sulfuric acid solution to neutralize and foam until the pH value of the solution is about 4.5, and the mixed solution is centrifuged, and the rotating speed of the centrifuge is 5500 rpm;

[0039] Add 300ml of methanol to the centrifuged tomato paste residue, stir at 25°C for 30 minutes, then filter the mixture with suction, and recover the methanol from the separated methanol solution through vacuum distillation;

[0040] Put the tomato paste residue separated by alcohol treatment into 200ml of methyl acetate for extraction, extract at 55°C for 60 minutes, the stirring speed is 200 rpm during the extraction process, and obtain 185ml of extract by suction filtration, and continue to add the extracted filter residue 100ml of methyl acetate was extracted for the second time, and th...

Embodiment 3

[0044] Mix 100g of tomato peels separated from the seeds by skin and 100ml of saturated potassium carbonate solution, and keep the temperature at 20°C for 60 minutes under stirring;

[0045] Then slowly add 200ml of sulfuric acid solution for neutralization and foaming until the pH of the solution is 5.0, then filter with suction;

[0046] Add 200ml of isopropanol to the obtained tomato skin residue, stir at a constant temperature of 40°C for 15 minutes, filter with suction, and recover isopropanol from the separated isopropanol solution by vacuum distillation;

[0047] The alcohol-treated tomato pomace was extracted with 700ml of n-hexane, extracted at 55°C for 60 minutes, and then suction filtered to obtain a lycopene extract;

[0048] Evaporate the lycopene extract to 10ml on a rotary evaporator, add 5ml of absolute ethanol and crystallize at 0°C for 3 hours, filter, and dry at 15°C to obtain 26.9mg of lycopene crystal product, lycopene The content is 74.1%.

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Abstract

The present invention relates to a preparation method of lycopene crystal and lycopene concentrate. Said method includes the following steps: pretreating raw material, using weakly alkaline solution to saponify raw material, then using low-molecular alcohol to make treatment, and using organic solvent to make extraction, finally two-temp. crystallizing so as to obtain the dark red lycopene crystal whose purity is greater than 70%, and the purity of lycopene crystal product produced by using said method can be up to above 90%. Said invention also provides its application range.

Description

technical field [0001] The invention relates to the field of food processing, in particular to a method for producing lycopene crystal products and lycopene concentrates by using a solvent to extract tomato peels separated from tomato paste, tomato powder or peel seeds. Background technique [0002] The molecular formula of Lycopene is C 40 h 56 , with a molecular weight of 536.85, and its structure is a polyunsaturated aliphatic hydrocarbon containing eleven conjugated double bonds and two non-conjugated double bonds. Strong coloring ability. Lycopene is one of the main sources of carotenoids in the diet and is also a biosynthetic intermediate of many carotenoids, accounting for more than 50% of carotenoids in serum. Its ability to quench singlet oxygen is 100 times that of vitamin E and more than twice that of β-carotene (Mascio D, Arch Biochem Biophys, 1989, 274:532-538). Epidemiological studies have found that the content of lycopene in the human ...

Claims

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Application Information

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IPC IPC(8): C09B61/00
Inventor 吾满江·艾力徐同玉董昕努尔买买提张亚刚
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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