Rhamnolipid Hydrolysate via Divalent-Base Hydrolysis for Tailored Surfactancy
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Solution Overview
Problem
Commercial rhamnolipids are costly and have poor performance compared to current surfactants, and there is a need for tailored rhamnolipid mixtures that provide improved efficacy and consumer experience.
Innovation Solution
A method involving the hydrolysis of commercial rhamnolipids using a divalent base, such as calcium hydroxide, to produce a mixture of monolipid rhamnolipid species, which are then separated from by-products, resulting in a rhamnomonolipid hydrolysate with improved surfactancy and color profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If commercial rhamnolipids are used, then natural surfactant properties are provided, but cost increases and performance is poor
Solution Approach 1:
The patent applies parameter changes by modifying the molecular structure of rhamnolipids through controlled hydrolysis to alter the ratio of mono- to di-rhamnolipid congeners. This chemical modification changes the surfactant properties to achieve better foaming, lathering, and cleaning performance while maintaining natural composition, thereby improving performance without significantly increasing cost.
Solution Approach 2:
The patent segments the rhamnolipid molecule by selectively hydrolyzing the glycosidic bonds to produce a defined mixture of monolipid and dilipid species. This segmentation allows for tailored surfactant properties where the mono-rhamnolipid portion provides enhanced foaming and lathering, while the dilipid portion maintains natural surfactant characteristics, resolving the performance-cost contradiction.
2Reliability
If rhamnolipids are hydrolyzed to produce monolipid species, then surfactancy is improved, but by-products are generated requiring separation
Solution Approach 1:
The patent uses parameter changes by controlling the hydrolysis conditions (base type, concentration, temperature, time) to optimize the production of monolipid species while minimizing harmful by-products. By carefully adjusting these parameters, the process achieves high surfactancy with reduced complexity in the subsequent separation steps.
Solution Approach 2:
The patent employs an intermediary approach by using a base catalyst (such as NaOH or KOH) to mediate the hydrolysis reaction. This intermediary enables controlled breakdown of the rhamnolipid molecules into desired monolipid species while allowing for easy separation of the by-products through subsequent acidification and filtration steps, thus managing process complexity.
3Adaptability or versatility
If base catalyzed hydrolysis is performed, then tailored rhamnolipid mixtures are produced, but process control becomes more difficult
Solution Approach 1:
The patent applies parameter changes by establishing specific ranges for hydrolysis conditions (base concentration: 0.1-5% w/v, temperature: 25-100°C, time: 1-24 hours) to achieve controlled production of tailored rhamnolipid mixtures. These parameter optimizations enable versatile mixture composition while maintaining manageable process control through defined operational windows.
Solution Approach 2:
The patent incorporates feedback mechanisms by monitoring the hydrolysis progress through analytical methods (such as HPLC or NMR) to track the conversion of rhamnolipid congeners. This feedback allows for real-time adjustment of reaction conditions to achieve the desired mixture composition, thereby maintaining manufacturing precision while producing versatile tailored mixtures.
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 method produces rhamnomonolipids with enhanced foaming properties and lighter colors, offering improved surfactancy and cost-effectiveness.
Implementation Method 1
treating the rhamnodilipids with a composition comprising a divalent base at a temperature sufficient to cause hydrolysis
Data Source
AI summary
A method of making a rhamnomonolipid hydrolysate by the following steps: a. providing rhamnodilipids; b. treating the rhamnodilipids with a composition comprising a divalent base at a temperature sufficient to cause hydrolysis; c. producing a rhamnomonolipid hydrolysate and by-products; and d. optionally separating the rhamnomonolipid hydrolysate from the by-products.