Isolation of ethanol- and acid-resistant <i>Acinetobacter baumannii</i> from daqu for efficient esterification of acidic Huangshui.

ABSTRACT: A large amount of highly acidic wastewater, known as Huangshui, is produced during liquor brewing. To improve its utilization rate and achieve resource recovery of liquor by-products. A strain with high esterifying ability was screened from Daqu and identified as Acinetobacter baumannii. The strain exhibited an esterification enzyme activity of (16.79 ± 0.03) U/mL and an esterification capacity of (45.37 ± 0.33) mg/g. It was able to grow normally under conditions of 7% ethanol and pH 4.0, demonstrating strong acid and ethanol tolerance, indicating its potential for preparing a Huangshui esterification solution. Subsequently, Huangshui was esterified using ethanol, caproic acid and Daqu powder prepared with this strain. Analysis of trace components in Huangshui before and after ester

SUBMITTER: Li J 

PROVIDER: S-EPMC12683909 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature