Lactic Acid Bacteria Mixture for Gluten-Free Bread Fermentation
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Solution Overview
Problem
Gluten-free bread products often have lower sensory and nutritional quality compared to traditional bread, and may contain gluten contaminants, posing risks for celiac patients, due to the use of conventional yeasting agents like brewer's yeast and chemical additives.
Innovation Solution
A mixture of selected lactic bacteria from the Lactobacillus genus, including Lactobacillus sanfranciscensis, Lactobacillus rossiae, and Lactobacillus plantarum, is used as a natural yeast to enhance the taste, nutritional value, and storage stability of gluten-free bread, while detoxifying gluten contaminants through fermentation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional yeasting agents (brewer's yeast or chemical yeasting) are used for gluten-free bread production, then the production process is simple and fast, but the sensory quality, nutritional value, and storage stability are lower
Solution Approach 1:
The patent changes the fundamental parameter of the yeasting agent from conventional brewer's yeast or chemical leavening to a specifically formulated lactic acid bacteria mixture. This parameter change transforms the fermentation process, producing organic acids and enzymes that improve sensory quality, nutritional value, and storage stability while maintaining production efficiency through controlled fermentation conditions.
Solution Approach 2:
The invention uses a composite microbial system comprising multiple lactic acid bacteria strains (Lactobacillus sanfranciscensis, Lactobacillus rossiae, and Lactobacillus plantarum) working synergistically. This composite biological agent produces multiple beneficial effects simultaneously: acidification for preservation, proteolysis for nutritional enhancement, and gluten degradation for safety, thereby resolving the contradiction between production simplicity and product quality.
2Ease of manufacture
If brewer's yeast or chemical additives are used for yeasting, then the process is straightforward, but gluten contamination risks remain and nutritional absorption is reduced
Solution Approach 1:
The patent converts the harmful effect of gluten contamination into a beneficial process by employing lactic acid bacteria with specific proteolytic activity. These bacteria naturally degrade gluten proteins during fermentation, transforming the contaminant into harmless peptides and amino acids. This approach maintains process simplicity while actively eliminating gluten contamination, making the bread safe for celiac patients.
Solution Approach 2:
The lactic acid bacteria mixture acts as an intermediary agent that mediates between the gluten-free ingredients and the final product safety. The bacteria produce enzymes that specifically target and degrade gluten proteins, serving as a biological filter that eliminates contamination risks without complicating the manufacturing process.
3Reliability
If gluten-free ingredients are used, then the product is safe for celiac patients, but the structural properties and sensory characteristics deteriorate
Solution Approach 1:
The patent changes the chemical and biological parameters of the gluten-free dough through lactic acid bacteria fermentation. The bacteria produce organic acids that modify the pH, enhancing the functional properties of gluten-free flours and starches. This parameter change improves water absorption, starch gelatinization, and protein coagulation, thereby restoring structural properties and sensory characteristics while maintaining safety for celiac patients.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The lactic bacteria mixture significantly increases free amino acid concentration, bioavailability of minerals, and sensory properties, providing a traditional bread taste and aroma while extending shelf-life without chemical preservatives, and effectively reduces gluten contamination.
Implementation Method 1
A propagation protocol of "natural yeast" involving propagation thereof for 8-24 h in a knead consisting of gluten-free ingredients and its successive use has been standardized and optimized
Implementation Method 2
Di Cagno et al. (Applied and Environmental Microbiology, vol. 70, no. 2, February 2004, pages 1088-1096) and De Angelis et al. (Journal of Cereal Science, Academic Press Ltd, XX, vol. 43, no. 3, May 2006, pages 301-314) disclose lactic acid bacteria strains for yeasting of gluten-free flours
Data Source
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AI summary
The present invention concerns a mixture of lactic bacteria for yeasting of gluten-free baked products. Particularly, the invention concerns the use of "natural yeast"based on selected lactic bacteria as yeasting agent for the production of gluten-free bread, with improved sensory and nutritional property, designed for celiac patients feeding.