Skip to main content

Use of Logistic Regression with Dummy Variables for Modeling the Growth–No Growth Limits of Saccharomyces cerevisiae IGAL01 as a Function of Sodium Chloride, Acid Type, and Potassium Sorbate Concentration According to Growth Media

The full text article is not available for purchase.

The publisher only permits individual articles to be downloaded by subscribers.


A global logistic model was used to study the effects of both quantitative variables (NaCl, acid, and potassium sorbate concentrations) and dummy variables (laboratory medium or brine, and citric, lactic, or acetic acids) on growth of Saccharomyces cerevisiae IGAL01. The deduced equations, with the significant coefficients selected by a backward stepwise procedure, allowed estimations of the simultaneous comparison of behaviors of levels of the qualitative variables as a function of the quantitative variables and the development of the growth–no growth limits according to laboratory medium or brine and the different types of acidifying agents. The S. cerevisiae growth region in yeast malt glucose peptone broth was always wider than that in brine, in which this yeast was inhibited by 0.03% potassium sorbate and 6% NaCl, when the acid concentration (regardless of type) was 0.2 to 0.3%. These results demonstrate the applicability of such model designs to include qualitative variables in investigations related to the development of growth–no growth limits.

Document Type: Research Article

Affiliations: Department of Food Biotechnology, Instituto de la Grasa, Consejo Superior de Investigaciones Científicas, Apartado 1078, 41012 Seville, Spain

Publication date: 2007-02-01

More about this publication?
  • Access Key
  • Free ContentFree content
  • Partial Free ContentPartial Free content
  • New ContentNew content
  • Open Access ContentOpen access content
  • Partial Open Access ContentPartial Open access content
  • Subscribed ContentSubscribed content
  • Partial Subscribed ContentPartial Subscribed content
  • Free Trial ContentFree trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more