In this study, sourdough-derived phytase active lactic acid bacteria and yeast isolates were used as starter cultures in whole wheat bread in various culture combinations. For this purpose, two different yeast species (Saccharomyces cerevisiae, Pichia membranifaciens) and 5 different LAB species (Weissella viridescens, Pediococcus pentosaceus, Pediococcus acidilactici, Lactobacillus brevis, Lactobacillus parabuchneri) have been tested in whole wheat bread dough production. Sourdough production was performed with using culture combinations and then the dough was added so that it would be 20% over the bread dough weight. Commercial yeast (5%) and sourdough samples produced by spontaneous fermentation were used in breads for control purposes. After fermentation of whole wheat bread production, dynamic rheological measurements were performed in bread dough. The elastic modulus values of the dough samples were higher than those of the viscous modulus and showed viscoelastic dough characteristics. The elastic and viscous modulus values of the samples increased while the complex viscosity values decreased with increasing frequency value applied to the doughs. The elastic modulus values of the samples changed in the range of 25900-42150 Pa and the highest elastic modulus value was determined in the bread prepared using commercial yeast and the lowest elastic modulus value was found in the spontaneous fermentation bread. The viscous modulus values of the dough samples varied between 13600-21600 Pa and the highest viscous (loss) module value was found in S. cerevisiae + Lb. parabuchneri culture combination bread and the lowest viscous (loss) module value was found in the spontaneous fermentation bread. As a result, it was observed that the dough rheology changed at significant levels according to the culture combination used.
Birincil Dil | Türkçe |
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Konular | Mühendislik |
Bölüm | Makaleler |
Yazarlar | |
Yayımlanma Tarihi | 31 Aralık 2018 |
Yayımlandığı Sayı | Yıl 2018 |