The present application belongs to the technical field of microbial
fermentation, and particularly relates to a
pentose lactis bacillus M34-1, a compound
microbial inoculant and application of the compound
microbial inoculant in
fermentation of red sour soup. The
pentose lactis bacillus M34-1 is preserved in the China General
Microbiological Culture Collection Center, and the preservation number is CGMCC No. 39925. The compound
microbial inoculant is composed of lactis bacillus MX14,
Pichia membranifaciens PY33 and
pentose lactis bacillus M34-1. The titratable
acid content reaches 22.70 g / kg after 7 days of
fermentation of the red sour soup by using the compound microbial inoculant, which is 18.0% higher than that of the MX14 / PY33 double-bacterium control, and the
viable cell count of PY33 at the end of fermentation is close to that of the double-bacterium control; the obtained red sour soup has high total
organic acid content, the composition of
free amino acids is improved, and different
volatile substance composition characteristics are formed. The present application has the advantages of strong acidification capacity, good strain compatibility and relatively balanced
quality control effect, and can be used for controllable fermentation production of the red sour soup.