Probiotic Microencapsulation in Protein-Carbohydrate Matrices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Probiotic bacteria face challenges in survival and delivery to specific sites in the gastrointestinal tract due to harsh conditions such as low pH, enzymes, and competition with resident bacteria, leading to ineffective dosing and adherence issues.
Innovation Solution
Microencapsulation of probiotic bacteria in an aqueous suspension or oil-in-water emulsion with film-forming proteins and carbohydrates, followed by drying to form a stable powder, which protects the bacteria during processing and transit and ensures targeted delivery to the gut.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If probiotic bacteria are delivered directly without protection, then the delivery process is simple, but the bacteria are killed by harsh gastrointestinal conditions (low pH, enzymes, bile salts)
Solution Approach 1:
The patent applies microencapsulation using protein-carbohydrate matrices that form protective shells around probiotic bacteria. These flexible film structures protect the bacteria from harsh gastrointestinal conditions including low pH, bile salts, and enzymes while allowing the bacteria to remain viable and functional for targeted delivery to the gut.
Solution Approach 2:
The patent uses composite protein-carbohydrate matrices combining materials such as gelatin with carbohydrates, or casein with starch. These composite materials provide enhanced protection compared to single materials, creating a robust delivery system that maintains bacterial viability through the complex gastrointestinal environment.
2Reliability
If probiotic bacteria are encapsulated in protective matrices, then bacterial survival is improved, but the manufacturing process becomes more complex
Solution Approach 1:
The patent employs spray drying as a preliminary action that simultaneously forms the protective protein-carbohydrate matrix and delivers the bacteria to the final product form. This one-step process creates encapsulated bacteria in powder form ready for formulation, eliminating the need for separate encapsulation and drying steps.
Solution Approach 2:
The patent utilizes controlled parameter changes during spray drying, including temperature gradients, atomization pressure, and drying air flow rates, to optimize both the formation of protective matrices and the survival of bacteria. By carefully controlling these parameters, the process achieves high bacterial viability while maintaining manufacturing efficiency.
3Productivity
If probiotic bacteria are exposed to spray drying process, then the product can be formulated and stored, but the bacteria may be damaged by heat and mechanical stress
Solution Approach 1:
The patent incorporates protective proteins and carbohydrates in the spray drying process that act as cushioning agents before the bacteria are exposed to heat and mechanical stress. These biomaterials form protective layers around the bacteria during atomization and drying, reducing the impact of thermal and mechanical stresses and maintaining high viability in the final powdered product.
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 microencapsulation techniques significantly enhance the survival of probiotic bacteria during spray drying, gastrointestinal transit, storage, and exposure to low pH, maintaining viability and ensuring effective delivery to the target sites in the gut.
Implementation Method 1
Microencapsulation of probiotic bacteria in an aqueous suspension or oil-in-water emulsion with film-forming proteins and carbohydrates
Implementation Method 2
film-forming proteins and carbohydrates, followed by drying to form a stable powder
Implementation Method 3
protects the bacteria during processing and transit and ensures targeted delivery to the gut
Implementation Method 4
Ability to adhere to surfaces, such as intestinal mucosal layer, and the epithelial cell walls of the gut are thus important characteristics for a probiotic
Data Source
AI summary
Probiotic microorganisms are micro encapsulated by dispersing the probiotic microorganism in an aqueous suspension of a film forming protein and a carbohydrate; in an oil in water emulsion of a film forming protein and a carbohydrate and a fat; or in an oil which is subsequently dispersed in a film forming protein and a carbohydrate. The emulsion or suspension may be dried to form a powder. The probiotic may be dispersed in oil and then emulsified with the aqueous suspension and then dried to produce an encapsulated oil be dried to produce a powder. Oil suspended probiotics may be preferred where the probiotic is water sensitive. The preferred protein is casein or whey protein and the carbohydrate may be a resistant starch or a saccharide with a reducing sugar group. Where the probiotic is oxygen sensitive the protein carbohydrate is heated to create Maillard reaction products in the encapsulating film.