A method for separating lycopene from fresh tomato without solvent

A tomato and solvent technology, applied in the direction of food ingredients as antioxidants, food ingredients containing natural extracts, food science, etc., can solve unreasonable and uneconomical problems, and achieve easy transformation and upgrading, safe and convenient production, and small losses Effect

Active Publication Date: 2021-01-05
刘伯堂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fat-soluble substances such as lycopene are mainly combined with cellulose and water, and their content is very small in fresh tomatoes. Lycopene, the main physical and chemical index is the content of soluble solids based on sugar content. In order to manufacture end products containing 500mg / 100g-1500mg / 100g of lycopene, it is unreasonable and uneconomical to discard the water-soluble components of tomato

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The method for separating and concentrating lycopene from fresh tomato without solvent of the present invention comprises the following steps:

[0048] (1) Use fresh tomatoes with lycopene content ≥ 12mg / 100g as raw materials, put them into -5℃ freezer for 2 days to form firm frozen tomatoes;

[0049] (2) Immediately wash with clean water at room temperature, and thaw at room temperature to become deconstructed and deformed softened tomatoes;

[0050] (3) Deconstructed and deformed softened tomatoes are beaten with a beater at room temperature and then filtered through a ￠1.0 sieve to separate the tomato skin and seeds to obtain tomato slurry, put it in a container and let it stand at room temperature for 3 hours; (use this sieve The skin and seeds can be separated by net filtration);

[0051] (4) The tomato slurry obtained in step (3) is sent to a horizontal sedimentation centrifuge with a separation factor ≥ 3500 at room temperature for the first dehydration and desu...

Embodiment 2

[0060]Compared with Example 1, the raw material of step (1) was changed to fresh tomatoes with a lycopene content of 25.2mg / 100g, stored in a freezer at -5°C for 10 days, thawed at room temperature, beaten at room temperature, sieved and peeled off the seeds To obtain tomato pulp, the first dehydration and desugaring of the horizontal sedimentation centrifuge is not used, but the first dehydration and desugaring of the screw press with a sieve hole of 0.1 mm is used. The other steps are the same, and the obtained desugared freeze-dried tomato powder is tomato Red pigment content ≥ 1000mg / 100g, by-product high-concentration ketchup quality reaches the national first-class ketchup standard.

Embodiment 3

[0062] Compared with Example 1, the raw material of step (1) was changed to fresh tomato with a lycopene content of 15mg / 100g, and the orange-red thick slurry obtained in step (4) was dehydrated and desugared for the first time at -5°C After 20 days of frozen storage in the cold storage, after thawing at room temperature, a second dehydration and desugaring was carried out with a screw juice extractor with a screen mesh of 0.1 mm. The yield of the obtained main product is reduced by 20%, the lycopene content of the main product desugared freeze-dried tomato powder is more than 600mg / 100g, and the by-product tomato paste can reach the national standard 28%-30% concentration first-grade tomato paste index.

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PUM

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Abstract

The invention provides a method for separating lycopene from fresh tomatoes without a solvent, and the method comprises the following steps: crushing fresh tomatoes, performing dehydrating and desugaring for two times at low temperature, performing water washing and sterilizing once, performing freezing and sublimating once, and performing final dehydrating by a vacuum or normal-pressure low-temperature drying method,wherein the first dehydrating and desugaring employs a normal-temperature centrifugal sedimentation or a filtering method, and the second dehydrating and desugaring employs a normal-temperature squeezing method. The beneficial effects of the method are as follows: no solvent is used in the technology, the product has no residue of a solvent, and production is safe and simple; all physical processes are carried out at low temperature, so as to reduce substantially the loss of bioactive substances; effective ingredients of tomatoes are fully utilized, which is convenient for promoting transformation and upgrading of excess capacity of a tomato sauce factory; and processing is not restricted by seasons, and is especially suitable for regions entering the winter and subjected to cooling and freezing soon after autumn harvest.

Description

technical field [0001] The invention belongs to the technical field of fruit and vegetable processing, and in particular relates to a method for separating and concentrating lycopene from fresh tomatoes without using a solvent. Background technique [0002] Lycopene is a carotenoid with the molecular formula C 40 h 56 A class of compounds is recognized as the strongest natural antioxidant in the world. Studies have proved that it has preventive effects on prostate, cardiovascular diseases and certain cancers. However, it cannot be synthesized in the human body and must be supplemented through food intake. Among all kinds of natural foods, tomato has the highest content. Chinese dietary habits make the intake of lycopene insufficient and affect health. Natural tomato products that are convenient to eat and concentrated in lycopene are in great demand in the market. [0003] So far, the methods for extracting and concentrating natural lycopene are almost all based on the oi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L33/105
CPCA23V2002/00A23V2200/02A23V2250/21
Inventor 刘伯堂
Owner 刘伯堂
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