Assessment of Cell Density and Acidifying Properties Variation of Forty-Two Lactobacillus Strains Isolated from “Lukanka” Sausage

ABSTRACT

Forty-two Lactobacillus strains isolated from „Lukanka” sausage were examined on the level of growth monitored by optical density within 72 hours spread on twelve time classes. The range of the OD comprises recorded values within the range of minimum (0) and maximum (2.31). Standard deviation of the observed OD varies between. The pH level of the cultures with recorded OD₆₀₀ comprises values between minimum and maximum (3.60 to 6.00) with standard deviation (0.84). We applied a linear regression models in the study for statistical analysis of the variation of the recorded traits considered with the categories of the measured fixed effects of strain and hour. The GLM estimates of the recorded ODs and the induced acidity have high significance of the variances (F-statistics, P <0.001). The differences between the averages of the categories within the strains and hours give us information about the possible variation dependences at following significance.

Keywords:

• General Linear Model (GLM)
• Lactobacillus