Beta-Carotene Separation via Enzymatic Hydrolysis and Medium-Pressure Chromatography
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Solution Overview
Problem
Current methods for separating beta-carotene from paprika red pigment are inefficient and not suitable for industrial production due to complex pigment composition and low separation efficiency, leading to insufficient yield and purity.
Innovation Solution
A method combining enzymatic hydrolysis and medium-pressure column chromatography using smaller particle size silica gel for adsorption and four-stage elution treatment to separate beta-carotene with a yield of up to 92.5% and high purity from paprika oleoresin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If preparative high performance liquid chromatography is used to separate beta-carotene from paprika red pigment, then separation purity is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent replaces complex high performance liquid chromatography equipment with a simple medium-pressure chromatographic column system. The separation is achieved through gravity-driven fluid flow and adsorption principles rather than complex mechanical pumping and detection systems, significantly reducing device complexity while maintaining separation purity.
Solution Approach 2:
The patent uses inexpensive chromatographic columns that can be easily packed and discarded after single use, eliminating the need for expensive, complex, and difficult-to-maintain HPLC equipment. The column can be simply repacked with fresh silica gel for continuous use, reducing both initial investment and operational costs.
2Ease of manufacture
If normal-pressure silica gel chromatography is used for beta-carotene separation, then process simplicity is improved, but productivity decreases due to long elution periods
Solution Approach 1:
The patent changes the pressure parameter from normal pressure to medium pressure (0.5-5 MPa) in the chromatographic column. This pressure increase accelerates the elution rate of beta-carotene from the silica gel column, reducing the elution period from hours to minutes while maintaining the simplicity of the adsorption-based separation process.
Solution Approach 2:
The patent introduces dynamic pressure control to the static normal-pressure chromatography system. By applying variable medium pressure during different stages of elution, the system achieves both rapid separation and complete elution of beta-carotene, significantly improving productivity without complicating the overall process.
3Quantity of substance
If saponification treatment is applied before separation, then beta-carotene extraction is improved, but harmful factors increase due to transformation and hydrolysis of pigment components
Solution Approach 1:
The patent performs preliminary extraction of beta-carotene from paprika oleoresin using solvent extraction before the separation process. This preliminary action concentrates the beta-carotene in the oleoresin matrix, making it more accessible to the chromatographic separation without requiring harsh saponification treatment that would transform other pigment components.
Solution Approach 2:
The patent uses an intermediary solvent system (ether-acetone mixture) that selectively dissolves beta-carotene while leaving other pigment components intact. This intermediary extraction method achieves high beta-carotene recovery without the harmful chemical transformations associated with direct saponification, preserving the natural characteristics of the pigment mixture for subsequent separation.
4Manufacturing precision
If column chromatography is used for beta-carotene separation, then separation capability is improved, but loss of time increases due to batch processing requirements
Solution Approach 1:
The patent designs the chromatographic column system for continuous operation rather than batch processing. The column can be continuously loaded with paprika oleoresin, continuously eluted with solvent, and continuously produced with beta-carotene-rich fractions. This continuous useful action eliminates the downtime associated with unpacking, activating, and repacking columns between batches, significantly reducing production cycle time.
Solution Approach 2:
The patent implements a system where the chromatographic column is discarded after a single use and replaced with a fresh column. This approach eliminates the time-consuming processes of column unpacking, high-temperature activation, and repacking. The simple disposal and replacement process is faster and more efficient than maintaining and reconditioning the same column, thereby reducing overall production cycle time.
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
This method enables the efficient and continuous industrial-scale separation of beta-carotene with high yield and purity, improving the quality and added value of paprika red pigment, thus meeting market demands and enhancing the pepper industry's development.
Implementation Method 1
medium-pressure column chromatography using smaller particle size silica gel for adsorption
Implementation Method 2
combining enzymatic hydrolysis and medium-pressure column chromatography
Data Source
AI summary
A method for preparing beta-carotene from pepper pigment includes: (1) enzymatic hydrolysis of paprika oleoresin to obtain a paprika red pigment hydrolysate; (2) extraction of the paprika red pigment hydrolysate to obtain a paprika red pigment solution; (3) refined filtration to obtain a paprika red pigment filtrate; (4) adsorption: carrying out chromatographic separation with a medium-pressure silica gel chromatographic column, and collecting an effluent from the chromatographic column; (5) elution of beta-carotene; (6) elution of yellow pigments; (7) elution of red pigments; and (8) elution of orange pigments. The invention combines enzymatic hydrolysis with medium-pressure column chromatography for the first time, where chromatographic silica gel with smaller particle size is used for adsorption, and four-stage elution treatment is carried out, so that beta-carotene with a content of more than 20% can be directly separated, and at the same time, reddish paprika red pigment with higher quality is prepared.