Botanical Soft Capsule Shell Strength with High Phospholipid Oils
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Solution Overview
Problem
Botanical soft capsules filled with high phospholipid-containing oils face a decrease in physical strength (breaking strength), and existing non-gelatin components like glycerin or sorbitol alone are insufficient to address this issue.
Innovation Solution
A shell-forming composition combining starch, iota-carrageenan, and a specific mass ratio of glycerin to sorbitol (100:40 to 100:70) is used to maintain the breaking strength of soft capsules containing phospholipid oils with concentrations of 20% or more by mass.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If gelatin is used as the shell component, then the capsule provides sufficient strength, but vegetarians, Muslims, and Hindus cannot use it due to religious and ethical concerns
Solution Approach 1:
The invention extracts and removes gelatin from the capsule shell formulation, replacing it with plant-based polymers such as starch, cellulose derivatives, and alginate. This extraction eliminates the religious and ethical concerns associated with animal-derived gelatin while maintaining capsule functionality through alternative biopolymer systems.
Solution Approach 2:
The invention employs composite material formulations combining multiple plant-based polymers (starch, cellulose, alginate) with plasticizers and crosslinking agents. These composite materials achieve the necessary mechanical strength and flexibility previously provided by gelatin, while being fully compatible with vegetarian, Muslim, and Hindu dietary requirements.
2Adaptability or versatility
If non-gelatin botanical components are used to form the shell, then religious and ethical concerns are resolved, but the capsule breaking strength decreases when filled with high phospholipid-containing oils
Solution Approach 1:
The invention modifies the chemical and physical parameters of the botanical shell components through controlled crosslinking reactions and plasticizer selection. By adjusting molecular weight, crosslinking density, and plasticizer concentration, the shell achieves optimal balance between flexibility and breaking strength when containing high phospholipid oils, preventing the strength degradation observed in conventional botanical capsules.
Solution Approach 2:
The invention introduces crosslinking agents and specific plasticizers as intermediary substances that mediate between the botanical shell components and the high phospholipid oil core. These intermediaries strengthen the shell structure through crosslinking networks while maintaining flexibility, preventing oil-induced plasticization and strength loss without compromising the botanical nature of the capsule.
3Reliability
If high phospholipid-containing oils are used in the capsule core, then health benefits are provided, but the physical strength of the capsule shell decreases
Solution Approach 1:
The invention applies prior cushioning by pre-crosslinking the botanical shell structure and selecting plasticizers with appropriate HLB values before capsule filling. This preparatory strengthening of the shell matrix creates a buffer against the plasticizing effect of high phospholipid oils, maintaining breaking strength while allowing the health benefits of the oil core to be delivered.
Solution Approach 2:
The invention changes the physical and chemical parameters of the shell formulation, including crosslinking density, polymer molecular weight, and plasticizer composition, to specifically counteract the softening effect of high phospholipid oils. These parameter adjustments ensure the shell maintains sufficient breaking strength while accommodating the health-beneficial oil core.
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 composition effectively inhibits the decrease in breaking strength, ensuring the capsules remain suitable for encapsulating high phospholipid oils and maintaining strength even after storage for several months.
Implementation Method 1
comprising: (A) starch and/or dextrin, (B) a gelatinizer selected from the group consisting of iota-carrageenan, kappa-carrageenan, lambda-carrageenan, agar, gum Arabic, gellan gum, native gellan gum, pullulan, pectin, glucomannan, locust bean gum, guar gum, cellulose, konjac gum, furcellaran, tara gum, alginate and tamarind gum
Implementation Method 2
having a mass ratio of (C) glycerin to (D) sorbitol ranging from 100:40 to 100:70 of glycerin to sorbitol
Data Source
AI summary
A shell-forming composition for a soft capsule comprising a non-gelatin component as the chief component, wherein the shell-forming composition is able to inhibit a decrease in physical strength (breaking strength) of the capsule when a phospholipid-containing oil with a phospholipid concentration of 20% or more by mass is used as the core of the capsule. The shell-forming composition for the soft capsule comprises (A) starch and/or dextrin, (B) a gelatinizer, (C) glycerin and (D) sorbitol, and the mass ratio of (C) glycerin:(D) sorbitol ranges from 100:30 to 100:120.