Related Experiment Video
Updated: Jan 24, 2026

Prospecting Microbial Strains for Bioremediation and Probiotics Development for Metaorganism Research and Preservation
Published on: October 31, 2019
Development of a Shelf-Stable Banana Purée by Combined Factors: Microbial Stability
S Guerrero1, S M Alzamora1, L N Gerschenson1
1Tecnología de Alimentos, Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina.
Abstract:
A preservation process based on the "hurdle" effect for obtaining a shelf-stable banana purée was developed. The microbial stability of the purée was challenged with inoculation of osmophilic and non-osmophilic yeasts, various molds, Bacillus coagulans , Clostridium pasteurianum and Clostridium butyricum . It was shown that growth of both native and inoculated flora may be prevented for at least 120 days storage in banana purée by adjusting water activity (aw) to 0.97, pH to 3.4, adding 250 ppm of ascorbic acid (AA), 100 ppm of potassium sorbate (KS) and 400 ppm of sodium bisulphite (NaHSO3), and applying a mild heat treatment.
Related Concept Videos
Factors Influencing Microbial Growth: pH
RNA Stability
Factors Influencing Microbial Growth: Temperature
Factors Influencing Microbial Growth: Osmolarity
Complexation Equilibria: Factors Influencing Stability of Complexes
Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry

