Evaluation of microtextural properties of sourdough wheat bread obtained from optimized formulation using scanning electron microscopy and image analysis during shelf life


Creative Commons License

HAYTA M. , Ertop M. H.

JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE, vol.55, no.1, pp.1-9, 2018 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Review
  • Volume: 55 Issue: 1
  • Publication Date: 2018
  • Doi Number: 10.1007/s13197-017-2823-1
  • Title of Journal : JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
  • Page Numbers: pp.1-9

Abstract

The aim of this study was to evaluate the microtextural properties of optimized wheat bread formulation consisting sourdough (A) prepared with two different fermentation methods [spontaneous fermentation (F1) versus starter of lactic acid bacteria added fermentation (F2)], instant active dry yeast (B) and wheat bran (C) during shelf life. The optimized levels for F1 were 11.45 g 100 g(-1) for sourdough, 1.10 g 100 g(-1) for dry yeast and 1.58 g 100 g(-1) for wheat bran and for F2 6.99 g 100 g(-1) for sourdough, 1.02 g 100 g(-1) for dry yeast and 38.84 g 100 g(-1) for wheat bran. The addition of sourdough significantly decreased the diameters of starch granules of sourdough breads, and affected shape and surface apparance of starch granules. The retrogradation phenomena during storage was explained with the change of interaction between starch granules and protein matrix. The F1 fermentation method was found to be more effective in terms of bread textural properties examined.