| The lactic acid bacteria (LAB) and yeast strains with phytate degrading ability were isolated from Iranian traditional
sourdough, and based on the acid and bile tolerance, three LAB and three yeast strains were selected and
molecularly identified. In this study, baker's yeast (Saccharomyces cerevisiae) was considered as a positive control
strain to investigate the nutritional and technological properties of the isolated strains. All of the identified
microorganisms were characterized based on additional probiotic properties and were evaluated for nutritional
and technological characteristics. The functional features are associated with degradation of phytate, antioxidant
capacity, exopolysaccharides, phenolic compound content and in vitro starch digestion. Among all the tested
strains the highest amount of phytase production capacity (1.64 Unit/ml) and lowest phytate content (17.49 mg/
5 g) belonged to Kluyveromyces marxianus. According to the results, the bread prepared by using Kluyveromyces
aestuarii possessed the highest porosity percentage (70.43%), and the lowest hardness (508.71 g). |