Lipase Powder Composition for Ester Exchange
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Solution Overview
Problem
Lipase activity is insufficient when lipase powder is directly used in ester exchange reactions, and it is challenging to evenly disperse water-soluble lipases in oil-based materials, leading to reduced effectiveness and efficiency in esterification and ester exchange processes.
Innovation Solution
Combining pulverized products of immobilized Thermomyces sp.-derived lipases with filter aids, specifically silica carriers, to create a lipase powder composition with improved activity and operability, where the lipases are pulverized to an average particle diameter of 1 μm to 300 μm, and used in conjunction with filter aids like cellulose for enhanced ester exchange and esterification reactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If lipase powder is directly used in ester exchange reactions, then the process is simple, but the lipase activity is insufficient and it is difficult to evenly disperse water-soluble lipases in oil-based materials
Solution Approach 1:
The patent combines lipase powder with hydrophobic carriers to create a composite material that maintains the simplicity of direct powder use while improving lipase activity and dispersion in oil-based materials. The hydrophobic carrier serves as a support matrix that enhances the catalytic activity and provides better compatibility with the non-aqueous reaction medium.
Solution Approach 2:
The hydrophobic carrier acts as an intermediary between the water-soluble lipase and the oil-based raw materials. It mediates the interaction by providing a hydrophobic environment that allows the water-soluble enzyme to function effectively in non-aqueous conditions, thereby improving dispersion and activity without requiring complex immobilization procedures.
2Ease of operation
If lipases are immobilized to carriers, then dispersion in oil-based materials is improved, but the lipase activity lowers
Solution Approach 1:
The patent changes the physical parameters of the lipase preparation by controlling particle size reduction to 1-100 μm and adjusting water content to 1-50% by weight. These parameter changes improve dispersion uniformity in oil-based materials while maintaining high lipase activity, avoiding the activity loss associated with traditional carrier immobilization.
Solution Approach 2:
Instead of uniformly immobilizing lipase on carriers throughout the material, the patent creates localized hydrophobic environments through the carrier mixture that selectively enhance lipase activity where needed. The local hydrophobic microenvironment around the lipase particles improves their performance in oil-based materials without requiring full immobilization.
3Ease of operation
If lipase powder particles are reduced to small size, then dispersion is improved, but particle stability and reusability decrease
Solution Approach 1:
The patent embeds fine lipase powder particles (1-100 μm) within a carrier matrix structure, creating a nested configuration where the small active particles are protected and stabilized by the larger carrier framework. This nesting approach maintains the dispersion benefits of fine particles while the carrier structure provides stability and enables easy recovery and reuse.
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 approach significantly enhances lipase activity and operability, allowing for repeated use in industrial-scale fat and oil modifications, improving the flavor of ester-exchanged oils and maintaining high safety and energy efficiency.
Implementation Method 1
combining pulverized products of immobilized Thermomyces sp.-derived lipases with filter aids
Implementation Method 2
a product obtained by pulverizing a Thermomyces sp.-derived lipase immobilized to a silica carrier
Data Source
AI summary
The present invention provides a lipase powder composition which comprises a filter aid(s) and a product obtained by pulverizing a Thermomyces sp.-derived lipase immobilized to a silica carrier(s) into the average particle diameter of 1 μm or more and less than 300 μm. This lipase powder composition improves the lipase activity and operability and, therefore, can be suitably used in the methods for exchanging esters of fats and oils and for esterification.