Food ingredient conversion method and food ingredient conversion device

Patent metadata

Field	Value
Publication number	US-2025325006-A1
Application number	US-202519259005-A
Country	US
Kind code	A1
Filing date	Jul 3, 2025
Priority date	Jan 26, 2023
Publication date	Oct 23, 2025
Grant date	—

Abstract

A food ingredient conversion method includes activating at least one of an enzyme or a coenzyme by applying a voltage from an external power supply located outside a reaction vessel and connected to a working electrode and a counter electrode to cause a current to flow between the working electrode and the counter electrode, transferring a proton between an organic compound and an external liquid by an enzymatic reaction using at least one of the activated enzyme or coenzyme, acquiring information on the current that has been caused to flow by the external power supply, and determining, based on the acquired information on the current, an amount of a pH adjusting agent to be fed for adjusting a pH of a reaction system.

First claim

What is claimed is:

1 . A food ingredient conversion method for converting an organic compound in a reaction system including an external liquid and contained in a reaction vessel,
the reaction vessel having therein a working electrode that activates at least one of an enzyme or a coenzyme and a counter electrode, the food ingredient conversion method comprising: activating at least one of the enzyme or the coenzyme by applying a voltage from an external power supply located outside the reaction vessel and connected to the working electrode and the counter electrode to cause a current to flow between the working electrode and the counter electrode; transferring a proton between the organic compound and the external liquid by an enzymatic reaction using at least one of the activated enzyme or coenzyme; acquiring information on the current that has been caused to flow by the external power supply; and determining, based on the acquired information on the current, an amount of a pH adjusting agent to be fed for adjusting a pH of the reaction system.

2 . The food ingredient conversion method according to claim 1 , further comprising:
adjusting the pH of the reaction system by feeding the determined amount of the pH adjusting agent to be fed.

3 . The food ingredient conversion method according to claim 1 ,
wherein, in the transferring, the proton is transferred from the organic compound to the external liquid.

4 . The food ingredient conversion method according to claim 1 ,
wherein, in the transferring, the proton is transferred from the external liquid to the organic compound.

5 . The food ingredient conversion method according to claim 1 ,
wherein the coenzyme is a redox coenzyme, an electron mediator that transfers an electron between the working electrode and the redox coenzyme is immobilized on the working electrode, and in the activating, an electron is transferred from the working electrode to the electron mediator, and at least one of the enzyme or the redox coenzyme is activated by the electron mediator to which the electron has been transferred.

6 . The food ingredient conversion method according to claim 5 ,
wherein the redox coenzyme is NADH or NADPH.

7 . The food ingredient conversion method according to claim 1 ,
wherein the organic compound includes at least one of a monosaccharide, a disaccharide, or a polysaccharide.

8 . The food ingredient conversion method according to claim 1 ,
wherein the organic compound includes an alcohol.

9 . The food ingredient conversion method according to claim 1 ,
wherein the organic compound has a disulfide bond.

10 . The food ingredient conversion method according to claim 1 ,
wherein at least one of the enzyme or the coenzyme is immobilized on the working electrode.

11 . A food ingredient conversion device for converting an organic compound in a reaction system including an external liquid, the food ingredient conversion device comprising:
a working electrode that activates at least one of an enzyme or a coenzyme; a counter electrode; a reaction vessel that contains the reaction system; an external power supply that applies a voltage between the working electrode and the counter electrode to cause a current to flow between the working electrode and the counter electrode; an acquirer that acquires information on the current that has been caused to flow by the external power supply; and a determiner that determines, based on the acquired information on the current, an amount of a pH adjusting agent to be fed for adjusting a pH of the reaction system.

12 . The food ingredient conversion device according to claim 11 ,
wherein the enzyme is an oxidase.

13 . The food ingredient conversion device according to claim 11 ,
wherein the enzyme is a reductase.

14 . The food ingredient conversion device according to claim 11 ,
wherein the enzyme and the coenzyme are immobilized on the working electrode.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Wayama Fumiya
• Hatsugai Noriyuki
• Tsuji Kiyotaka
• Okumura Yasuaki
• Ukai Kunihiro

Classifications

• A23L5/25 Primary

  using enzymes · CPC title

• A23L15/25 Primary

  Addition or treatment with microorganisms or enzymes · CPC title

• C12M1/42

  Apparatus for the treatment of microorganisms or enzymes with electrical or wave energy, e.g. magnetism, sonic waves · CPC title

• C12P21/00

  Preparation of peptides or proteins (single cell protein C12N1/00) · CPC title

• C12P7/00

  Preparation of oxygen-containing organic compounds · CPC title