Method for preparing instant high-selenium corn meal by vacuum freeze-drying

A technology of vacuum freeze-drying and corn flour, which is applied in food preparation, food science, application, etc. It can solve the problems of difficult removal, inability to achieve instant effect, sticking, etc., and achieve the effect of fine taste

Inactive Publication Date: 2015-03-04
SUZHOU SETEK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) Corn flour agglomeration: Corn is processed into selenium-enriched corn flour products through processes such as peeling, degerming, crushing, and puffing. Dispersed, unable to achieve instant effect;
[0005] (2) Sticky wall: Due to a large amount of agglomeration during brewing, the lumpy corn flour is easy to stick to the wall of the cup, making it difficult to be removed during rinsing
It aims to fill the gap that there is no production method in the field of selenium-enriched corn flour, and provide a convenient and ready-to-eat selenium supplement product to meet people's daily selenium supplement needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Production example of 250 micrograms of selenium / bag without adding instant selenium-enriched corn kernels

[0027] (1) Cleaning, peeling, and germ removal: select high-quality, high-protein selenium-enriched corn (selenium content 25 micrograms of selenium / gram (dry weight)) for cleaning, peeling, and germ removal;

[0028] (2) meal: the corn after cleaning, dehulling, germination is carried out meal, obtains 60-80 purpose corn grain;

[0029] (3) Ripening: add 1-3% water to the coarse powdered granules, mix them evenly, and then use a twin-screw extruder to form mature corn granules at an extrusion curing temperature of 100-160°C;

[0030] (4) Fine powder: pulverize the mature corn granules to obtain 100-120 mesh corn flour;

[0031] (5) Rehydration: dissolve and gelatinize the corn flour obtained in (4) on a freeze-drying tray according to corn flour: normal temperature water = 1:5-10 (volume ratio), with a thickness of 2-3cm;

[0032] (6) Pre-freezing: Pre-freeze ...

Embodiment 2

[0038] Production example of 100 micrograms of selenium / bag of non-added instant selenium-enriched corn kernels

[0039] (1) Cleaning, peeling, and germ removal: select high-quality, high-protein selenium-enriched corn (selenium content of 10 micrograms of selenium / gram (dry weight)) for cleaning, peeling, and germ removal;

[0040] (2) Coarse powder: the corn after washing, peeling and degerming is subjected to coarse powder to obtain 60-80 mesh corn grains;

[0041] (3) Ripening: add 1-3% water to the coarse powdered granules, mix them evenly, and then use a twin-screw extruder to form mature corn granules at an extrusion curing temperature of 100-160°C;

[0042] (4) Fine powder: pulverize the mature corn granules to obtain 100-120 mesh corn flour;

[0043] (5) Rehydration: dissolve and gelatinize the corn flour obtained in (4) on a freeze-drying tray according to corn flour: normal temperature water = 1:5-10 (volume ratio), with a thickness of 2-3cm;

[0044] (6) Pre-free...

Embodiment 3

[0050] Production example of 50 micrograms of selenium / bag without adding instant selenium-enriched corn kernels

[0051] (1) Cleaning, peeling, and germ removal: select high-quality, high-protein selenium-enriched corn (selenium content 5 micrograms of selenium / gram (dry weight)) for cleaning, peeling, and germ removal;

[0052] (2) Coarse flour: the corn after cleaning, peeling and degerming is subjected to coarse flour to obtain 60-80 mesh corn granules;

[0053] (3) Ripening: add 1-3% water to the coarse powdered granules, mix them evenly, and then use a twin-screw extruder to form mature corn granules at an extrusion curing temperature of 100-160°C;

[0054] (4) Fine powder: pulverize the mature corn granules to obtain 100-120 mesh corn flour;

[0055] (5) Rehydration: dissolve and gelatinize the corn flour obtained in (4) on a freeze-drying tray according to corn flour: normal temperature water = 1:5-10 (volume ratio), with a thickness of 2-3cm;

[0056] (6) Pre-freezi...

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PUM

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Abstract

The invention discloses a method for preparing additive-free instant selenium-rich corn particles by a vacuum freeze-drying process. The method is characterized by comprising the following steps: by taking selenium biological-nutrient-fortified high-selenium corn as a raw material, performing processes such as cleaning, peel removing, degerming, coarse grinding, curing, fine grinding, rehydration, pre-freezing, sublimation drying, analysis drying, granulating and quantitative sub-packaging to obtain the additive-free instant selenium-rich corn particles with particle diameter of 10-20mesh, rehydration instant time less than 10 seconds and selenium content of 10-250 micrograms / 10grams. The method disclosed by the invention can be used for realizing the preparation of instant corn particles in the absence of additives; the additive-free instant selenium-rich corn particles have good rehydration capability and aroma of extruded corn meal. Moreover, selenium quantification is realized, so that an appropriate and scientific choice is provided for different selenium-supplementing crowds.

Description

technical field [0001] The invention relates to a method for preparing corn flour, in particular to a method for preparing instant high-selenium corn flour by vacuum freeze-drying. Background technique [0002] Selenium is an essential trace mineral element for humans and mammals. It is an essential component of as many as 30 active enzymes such as glutathione peroxidase (GSH-Px) and selenoprotein P. It has anti-oxidation, heart protection , anti-hepatic necrosis, prevention and treatment of myopia and cataracts, detoxification, improve immunity, delay aging and enhance reproductive function and other physiological functions. According to incomplete statistics, there are more than 40 countries and regions lacking selenium in the world, and 72% of my country's regions are selenium-severely deficient areas, and nearly 900 million people are suffering from health threats caused by selenium deficiency. In addition, with the increasingly serious environmental pollution, pneumoni...

Claims

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Application Information

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IPC IPC(8): A23L1/18A23L1/304A23L7/17A23L33/16
CPCA23L33/16A23L7/161A23V2002/00A23V2250/1626
Inventor 袁林喜周乾坤
Owner SUZHOU SETEK
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