Abstract
Blends of wheat, rye and barley were used to obtain multigrain milling fractions. The multigrain flours were further subjected to fermentation, and the metabolites profile and the nutritional potential of the obtain sourdoughs were explored. Increasing the level of rye and barley in the multigrain blends resulted in increased DPPH RSA, total phenolic and folic acid contents in flours and brans. The level of panthotenic acid decreased in flours and brans, with the increase of rye and barley levels. Both spontaneous and lactic acid bacteria assisted sourdough fermentation resulted in lower levels of folic acid compared to the corresponding flours, but the concentration increased with the level of rye and barley within blends. The metabolites biosynthesized by lactic acid bacteria varied with the levels of rye and barley in the blends. Multigrain milling and sourdough fermentation are valuable tools for modulating the nutritional profile of the cereal based food products.
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