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Abstract
To investigate the effect of different acetic acid bacteria on qualities of detoxified Rhus verniciflua vinegar (DRV), different DRVs were produced by using three acetic acid bacterial strains including Acetobacter pasteurianus KACC16934 (AP), Acetobacter malorum V5-7 (AM), and Gluconoacetobacter entanii RDAF-S (GE). Little difference in pH (2.87~2.90) or titratable acidity (5.33~5.68%) was observed among different DRVs. Acetic acid yields of the AP, AM, and GE strains were 78.6%, 85.3%, and 85.9%, respectively. Organic acid content in different DRVs was in the range of 69.84~73.83 mg/mL. Oxalic acid, malic acid, succinic acid, acetic acid, and fumaric acid were detected in all DRVs. And glutamic acid, alanine, valine, leucine, tyrosine, lysine, anserine, and arginine were detected in all DRVs. Arginine and alanine were the predominant amino acids in all DRVs. PCA plots of electronic nose analysis data showed a significant differentiation of DRVs from different acetic acid bacterial strains. A sensory evaluation of all DRVs indicated that DRV fermented using AM was superior in the aspect of flavor, tasted and overall preference.
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