Method for Producing Intensified Whole-Cereal Flour by Means of Pulsed Electric Fields in Collaboration with Ultrafine Pulverization

Patent metadata

Field	Value
Publication number	US-2018242597-A1
Application number	US-201515755162-A
Country	US
Kind code	A1
Filing date	Dec 29, 2015
Priority date	Aug 28, 2015
Publication date	Aug 30, 2018
Grant date	—

Abstract

A method is provided for producing intensified whole-cereal flour by means of pulsed electric fields in collaboration with ultrafine pulverization, which includes: (1) preparing bran, middling and flour by cleaning, modulating and milling cereal grains; (2) performing superfine pulverization on the bran and the middling and performing sieving; (3) preparing a suspension by using water and the sieved bran and middling, and stirring constantly; (4) adding polysaccharide colloids into the suspension, and adjusting the pH to 4.0; (5) performing high-voltage pulse treatment on the suspension to ensure stable flow of the suspension; (6) centrifuging the suspension to separate the supernatant, and drying the obtained precipitate and performing sieving to obtain the treated bran and middling; and (7) mixing the treated bran and middling with flour uniformly to obtain whole-cereal flour.

First claim

1 . A method for producing intensified whole-cereal flour by means of pulsed electric fields in collaboration with ultrafine pulverization, the method comprising:
(1) preparing bran, middling and flour by cleaning, modulating and milling cereal grains; (2) performing superfine pulverization on the bran and the middling and performing sieving for standby use; (3) preparing a 20-30% suspension by using water and the sieved bran and middling, and stirring constantly to keep the suspension uniform; (4) adding polysaccharide colloids into the suspension, and adjusting the pH to 4.0-5.5, with the polysaccharide colloids added in an amount of 0.2-0.5‰ of the mass of the suspension; (5) placing the suspension obtained in step (4) into a processing chamber of a washed high-voltage pulse processing device for high-voltage pulse treatment to ensure stable flow of the suspension; (6) centrifuging the suspension after step (5) to separate a supernatant, and drying the resulting precipitates at 30-37° C. to a moisture content below 14% and performing sieving to obtain treated bran and middling; and (7) mixing the treated bran and middling obtained in step (6) with the flour obtained in step (1) to obtain the whole-cereal flour.

2 . The method according to claim 1 , wherein the polysaccharide colloids of step (4) comprise at least one of gum acacia, konjac gum, carrageenan, xanthan gum, pectin, or any combination thereof.

3 . The method according to claim 1 , wherein the high-voltage pulse treatment in step (5) comprises a pulse frequency of 500-1500 Hz, a pulse width of 20-40 μs, a flow rate of 300-600 L/h, an electric field intensity of 10-50 kV/cm, and a pulse treatment time of 70-550 μs.

4 . The method according to claim 1 , wherein the cleaning in step (1) comprises at least one of sieving, removing stone, magnetic separation, winnowing, threshing, or any combination thereof.

5 . The method according to claim 1 , wherein the sieving in step (2) is done by a 60-mesh sieve.

6 . The method according to claim 1 , wherein the sieving in step (6) is done by a 80-mesh sieve.

7 . The method according to claim 1 , wherein the centrifugation in step (6) is centrifugating for 5-15 min at 3000-5000 r/min.

8 . The method according to claim 1 , wherein the high-voltage pulse treatment in step (5) comprises a pulse frequency of 500-1500 Hz.

9 . The method according to claim 1 , wherein the high-voltage pulse treatment in step (5) comprises a pulse width of 20-40 μs.

10 . The method according to claim 1 , wherein the high-voltage pulse treatment in step (5) comprises a flow rate of 300-600 L/h.

11 . The method according to claim 1 , wherein the high-voltage pulse treatment in step (5) comprises an electric field intensity of 10-50 kV/cm.

12 . The method according to claim 1 , wherein the high-voltage pulse treatment in step (5) comprises a pulse treatment time of 70-550 μs.

Assignees

• Univ South China Tech

Inventors

• Zeng Xin'An
• Hong Jing
• Han Zhong
• Liu Zhiwei

Classifications

• A21D2/181

  Sugars or sugar alcohols (honey A21D2/34) · CPC title

• A21D6/00 Primary

  Other treatment of flour or dough before baking, e.g. cooling, irradiating or heating (preservation of flour or dough before baking A23B40/00) · CPC title

• A21D2/183

  Natural gums · CPC title

• B02B5/02

  Combined processes · CPC title

• A23L7/198

  Dry unshaped finely divided cereal products, not provided for in groups A23L7/117 - A23L7/196 and A23L29/00, e.g. meal, flour, powder, dried cereal creams or extracts · CPC title