A bacterium of acetobacter pasteurii and its screening method and application

By screening out the heat-resistant, alcohol-resistant, and acid-resistant Acetobacter pasteurellium QXR-11, the adaptability problem of existing Acetobacter species in liquid fermentation environment has been solved, realizing the efficient brewing of Fujian red yeast rice vinegar and improving acid production capacity and production efficiency.

CN116478869BActive Publication Date: 2026-07-21FUJIAN YONGCHUN QIAOXIN BREWING CO LTD
View PDF 8 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
FUJIAN YONGCHUN QIAOXIN BREWING CO LTD
Filing Date
2023-03-27
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

The existing Acetobacter species are weak in terms of high temperature, alcohol, pH tolerance and acid production capacity, and cannot effectively adapt to the liquid fermentation environment, which limits the brewing quality and fermentation cycle of Fujian red yeast rice vinegar.

Method used

A strain of *Acetobacter pasteurianus* QXR-11 was screened out, which has the characteristics of high temperature resistance, alcohol resistance, and acid resistance. It was applied to the brewing of Fujian red yeast rice vinegar through liquid surface static fermentation or liquid deep fermentation.

Benefits of technology

Acetobacter pasteurellium QXR-11 can grow at 60℃, 15% alcohol, and pH 2.5. It has a strong acid production capacity, which shortens fermentation time, increases yield and production efficiency, and reduces costs.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN116478869B_ABST
    Figure CN116478869B_ABST
Patent Text Reader

Abstract

The application discloses Acetobacter pasteurianus QXR-11, wherein the QXR-11 colony is round, flat, has neat edges and a beige color, and the colony surface is smooth and transparent; the Acetobacter pasteurianus is preserved in the China Center for Type Culture Collection, Wuhan University, Wuhan City, Hubei Province, China, on August 8, 2022, and has a preservation number of CCTCC NO: M20221203. The application further discloses a screening method of the Acetobacter pasteurianus QXR-11. The application further discloses application of the Acetobacter pasteurianus in brewing of Fujian monascus vinegar and a brewing method of the Fujian monascus vinegar. The Acetobacter pasteurianus has a wide tolerance range to the environment, can tolerate high temperature, high-concentration ethanol and low-pH brewing conditions, has a good acid production effect and a high production rate, can improve yield, shorten fermentation time and improve production efficiency, and thus reduces production cost.
Need to check novelty before this filing date? Find Prior Art