Journal
FOODS
Volume 12, Issue 18, Pages -Publisher
MDPI
DOI: 10.3390/foods12183333
Keywords
Lactiplantibacillus plantarum (LP-GM4); Saccharomyces cerevisiae (yeast); starch digestion; protein digestion; steamed bread
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This study compared the characteristics of steamed bread produced by three different fermentation methods and found that steamed bread fermented by LP-GM4-yeast co-culture showed better quality attributes in terms of specific volume, resistant starch, and soluble protein, which is more beneficial for human health.
The leavening of wheat-based steamed bread is carried out either with a pure yeast culture or with traditional starter cultures containing both lactic acid bacteria and yeast/mold. The use of variable starter cultures significantly affects steamed bread's quality attributes, including nutritional profile. In this paper, differences in physicochemical properties, the type of digested starch, the production of free amino acids, and the specific volume of steamed bread under three fermentation methods (blank, yeast, and LP-GM4-yeast) were compared. The digestion characteristics (protein and starch hydrolysis) of steamed bread produced by using either yeast alone or a combination of Lactiplantibacillus plantrum and yeast (LP-GM4-yeast) were analyzed by an in vitro simulated digestion technique. It was found that the specific volume of steamed bread fermented by LP-GM4-yeast co-culture was increased by about 32%, the proportion of resistant starch was significantly increased (more than double), and soluble protein with molecular weight of 30-40 kDa was significantly increased. The results of this study showed that steamed bread produced by LP-GM4-yeast co-culture is more beneficial to human health than that by single culture.
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