Methods for producing starch selenium polysaccharide and selenium-rich pre-gelatinized nutritional rice paste by using pulsed electric fields

A pulsed electric field and nutritional rice paste technology, applied in the field of rice paste processing, can solve the problems of unusable starch selenium polysaccharides, high degree of esterification substitution, low utilization rate of human body, etc., to improve intake deficiency and promote interaction , the effect of increasing the content of selenium

Active Publication Date: 2016-10-26
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These rice cereals rich in mineral elements are mostly prepared by directly adding inorganic salts, which have low utilization rate and poor absorption effect.
The starch selenite developed by Fang Hongbing (Microwave Preparation and Characterization of...

Method used

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  • Methods for producing starch selenium polysaccharide and selenium-rich pre-gelatinized nutritional rice paste by using pulsed electric fields
  • Methods for producing starch selenium polysaccharide and selenium-rich pre-gelatinized nutritional rice paste by using pulsed electric fields
  • Methods for producing starch selenium polysaccharide and selenium-rich pre-gelatinized nutritional rice paste by using pulsed electric fields

Examples

Experimental program
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Effect test

Embodiment 1

[0054] NaHSO 3 and NaNO 2 The solution (substance mass ratio is 1.0) mixes evenly, adds 30% polished rice emulsion, adjusts electrical conductivity to be 1.0mS / cm, and is placed in the treatment chamber of pulse electric field treatment device, guarantees the stable flow of processed emulsion, The parameters of the pulsed electric field were set as follows: the pulse width was 20 μs, the flow rate was 300 L / h, the pulse frequency was 1000 Hz, the electric field strength was 2 kV / cm, the pulsed electric field treatment time was 30 min, and starch sulfate was obtained after washing, drying and sieving. Add starch sulfate / selenite (w / w=1.5:5.0) to distilled water to configure a 30% (w / w) suspension, adjust the conductivity to 1.0mS / cm, and place it in the pulse processing device The processing is carried out in the processing chamber, the pulse width is 60 μs, and other pulse electric field parameters are the same as above. After washing, drying and sieving, the selenium-enriche...

Embodiment 2

[0056] NaHSO 3 and NaNO 2 The solution (substance mass ratio is 2.0) mixes evenly, adds 20% polished rice emulsion, adjusts electrical conductivity to be 3.0mS / cm, and is placed in the treatment chamber of pulse electric field treatment device, guarantees the stable flow of treated emulsion, The pulse electric field parameters are set as follows: pulse width is 80μs, flow rate is 500L / h, pulse frequency is 800Hz, electric field strength is 8kV / cm, pulse electric field treatment time is 30min, starch sulfate is obtained after washing, drying and sieving. Add starch sulfate / selenite (w / w=1:2.3) to distilled water to configure a 30% (w / w) suspension, and adjust the conductivity to 2.0mS / cm, place it in the pulse processing device The treatment is carried out in the treatment chamber, the electric field strength is 3kV / cm, and the other pulse electric field parameters are the same as above. After washing, drying and sieving, the selenium-enriched pregelatinized nutritional rice f...

Embodiment 3

[0058] NaHSO 3 and NaNO 2 The solution (substance mass ratio is 3.0) mixes evenly, adds 25% polished rice emulsion, adjusts electrical conductivity to be 2.5mS / cm, and is placed in the treatment chamber of pulse electric field treatment device, guarantees the stable flow of processed emulsion, The parameters of the pulsed electric field were set as follows: the pulse width was 60 μs, the flow rate was 400 L / h, the pulse frequency was 1500 Hz, the electric field strength was 6 kV / cm, the pulsed electric field treatment time was 50 min, and starch sulfate was obtained after washing, drying and sieving. Add starch sulfate / selenite (w / w=1.0:5.0) to distilled water to configure a 40% (w / w) suspension, and adjust the conductivity to 2.0mS / cm, place it in the pulse processing device The processing is carried out in the processing chamber, the pulse width is 80 μs, and other pulse electric field parameters are the same as above. After washing, drying and sieving, the selenium-enriche...

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Abstract

The invention discloses methods for producing starch selenium polysaccharide and selenium-rich pre-gelatinized nutritional rice paste by using pulsed electric fields. According to the methods, (1) a sodium hydrogen sulfite solution and a sodium nitrite solution are mixed and then added to a starch/rice flour emulsion; (2) the conductivity of the emulsion in the step (1) is adjusted to range from 0.02 mS/cm to 4.0 mS/cm; (3) the emulsion in the step (2) is placed in a pulse treatment device, and starch/rice flour ester is obtained; (4) starch/rice flour ester and selenite are mixed and placed in the pulse treatment device, and starch selenium polysaccharide/selenium-rich pre-gelatinized nutritional rice flour is obtained; (5) the selenium-rich pre-gelatinized nutritional rice flour obtained in the step (4) and enzymatic rice bran powder are evenly mixed, and the selenium-rich pre-gelatinized nutritional rice flour is obtained. With the methods, the content of selenium in the starch/rice paste can be significantly increased, the per capita selenium intake of the public is increased, the content of other mineral elements is increased, the gelatinization temperature of the rice paste is reduced, and the problem that existing commercially-available rice paste products cake easily in the brewing process is solved.

Description

technical field [0001] The invention relates to a processing method of rice paste, in particular to a method for producing starch selenium polysaccharide and selenium-enriched pregelatinized nutritional rice paste by using a pulse electric field. Background technique [0002] Selenium is honored as "the fire of life" by domestic and foreign medical and nutritional circles, and enjoys the reputation of "longevity element", "king of anti-cancer", "heart patron saint", "natural antidote" and so on. At the same time, selenium is also It is the strongest anti-cancer, anti-free radical, anti-peroxidation, anti-virus, anti-radiation, detoxification, and immune-regulating substance in the human body, and its effectiveness is 500 times that of vitamins. Insufficient intake of selenium by the human body will lead to hypothyroidism, weak immune system function, and cause some endemic diseases-Keshan disease, Kaschin-Beck disease and endemic anemia. Hundreds of diseases are related to ...

Claims

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Application Information

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IPC IPC(8): A23L7/10A23L5/10A23L29/10A23L33/10A23L33/16A23L29/30C08B31/00
Inventor 曾新安洪静韩忠
Owner SOUTH CHINA UNIV OF TECH
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