High-acidity vinegar and method for producing the same

Patent metadata

Field	Value
Publication number	US-9453192-B2
Application number	US-201214649139-A
Country	US
Kind code	B2
Filing date	Dec 3, 2012
Priority date	Dec 3, 2012
Publication date	Sep 27, 2016
Grant date	Sep 27, 2016

Abstract

The present invention relates to a method for producing a high-acidity vinegar with improved efficiency compared with conventional methods and a high-acidity vinegar obtained by such method. The method of the present invention is characterized in that acetic acid fermentation is conducted with a culture solution which contains a compound having a thiol group or an S-substituted derivative thereof or a compound having a disulfide bond as an additive wherein a total nitrogen content of the culture solution is 0.023 w/v % or less. According to the method of the present invention, a high-acidity vinegar, which has a total nitrogen content of 0.015 w/v % or less and an acidity of 10 to 25 w/v % and contains a compound having a thiol group or an S-substituted derivative thereof or a compound having a disulfide bond at a concentration of 17 μM or more in terms of sulfur atoms contained in the thiol group or disulfide bond can be obtained.

First claim

The invention claimed is:

1. A method for producing a high-acidity vinegar comprising:
preparing a culture solution comprising at least one additive selected from the group consisting of:
a compound having a thiol group or an S-substituted derivative thereof, and
a compound having a disulfide bond; and
conducting acetic acid fermentation with the culture solution using bacteria of the genus Acetobacter or the genus Gluconacetobacter , wherein a total nitrogen content of the culture solution is 0.023 w/v % or less.

2. The method according to claim 1 , wherein the additive is selected from the group consisting of: amino acids having a thiol group and S-substituted derivatives thereof amino acids having a disulfide bond; and salts thereof.

3. The method according to claim 1 , wherein the additive is selected from the group consisting of cysteine, cystine, peptides having a cysteine residue, and salts thereof.

4. The method according to claim 1 , wherein the additive is cystine or a salt thereof.

5. The method according to claim 1 , wherein the culture solution contains the at least one additive at a concentration of 20 μM or more in terms of sulfur atoms contained in the thiol group or disulfide bond.

6. The method according to claim 2 , wherein the culture solution contains the at least one additive at a concentration of 20 μM or more in terms of sulfur atoms contained in the thiol group or disulfide bond.

7. The method according to claim 3 , wherein the culture solution contains the at least one additive at a concentration of 20 μM or more in terms of sulfur atoms contained in the thiol group or disulfide bond.

8. The method according to claim 4 , wherein the culture solution contains the at least one additive at a concentration of 20 μM or more in terms of sulfur atoms contained in the thiol group or disulfide bond.

9. The method according to claim 1 , wherein the culture solution further comprises glutamic acid or a salt thereof.

10. The method according to claim 2 , wherein the culture solution further comprises glutamic acid or a salt thereof.

11. The method according to claim 3 , wherein the culture solution further comprises glutamic acid or a salt thereof.

12. The method according to claim 4 , wherein the culture solution further comprises glutamic acid or a salt thereof.

13. The method according to claim 5 , wherein the culture solution further comprises glutamic acid or a salt thereof.

14. The method according to claim 1 , wherein acetic acid fermentation is conducted with said culture solution until acidity of the culture solution reaches 10 to 25 w/v %.

Assignees

• Nakano Shigeru
• Ohno Takeshi
• Mizkan Holdings Co Ltd

Inventors

• Nakano Shigeru
• Ohno Takeshi

Classifications

• C12N1/38

  Chemical stimulation of growth or activity by addition of chemical compounds which are not essential growth factors; Stimulation of growth by removal of a chemical compound (C12N1/34 takes precedence) · CPC title

• C12P7/54

  Acetic acid (vinegar C12J) · CPC title

• C12J1/04 Primary

  from alcohol · CPC title

• C07C53/08

  Acetic acid (pyroligneous acid C10C; preparation of vinegar C12J) · CPC title