Low-Iron Hydrous Phospholipids From Soybean Oil Sediments
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Solution Overview
Problem
Existing methods for processing soybean oil sediments into phospholipids face challenges such as low acetone-insoluble content, inability to remove iron ions, and difficulties in industrial-scale production, leading to environmental pollution and food safety hazards.
Innovation Solution
A hydration method involving soaking soybean oil sediments in water, followed by centrifugal sedimentation and static stratification, to produce low-iron hydrous phospholipids with high acetone-insoluble content and minimal metal salts, which are then processed into low-iron powdered phospholipids without solvents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional hydration method is used to prepare concentrated phospholipids, then production cost is reduced, but acetone-insoluble content is too low (60-65 g/100 g) and iron ions cannot be removed
Solution Approach 1:
The patent extracts and removes phospholipid metal salts (particularly iron ions) from the hydration system through centrifugal separation. The metal salts precipitate during hydration and are separated by centrifugation, achieving removal of harmful iron ions while maintaining high acetone-insoluble content of 93-97 g/100 g
Solution Approach 2:
The patent optimizes hydration parameters including water-to-sediment ratio (2:1 to 4:1), hydration temperature (60-95°C), and hydration time (2-6 hours) to control the hydration process. These parameter changes enable simultaneous achievement of high phospholipid extraction, metal salt precipitation, and high acetone-insoluble content
2Quantity of substance
If solvent extraction method is used to prepare powder phospholipids, then acetone-insoluble content is high (95-98 g/100 g), but production cost increases and environmental pollution occurs
Solution Approach 1:
The patent replaces the chemical solvent extraction method with a physical hydration-centrifugation system. Water is used as the hydrating agent instead of organic solvents, and centrifugal force replaces chemical extraction. This substitution achieves comparable acetone-insoluble content (93-97 g/100 g) without the environmental pollution and high costs associated with solvent methods
Solution Approach 2:
The patent changes the fundamental parameter of the extraction system from organic solvent to water-based hydration. By controlling hydration temperature, water ratio, and time, the method achieves high phospholipid purity and acetone-insoluble content through physical-chemical hydration rather than chemical extraction
3Device complexity
If conventional hydration method is used, then production process is simple, but iron ions remain in the product and acetone-insoluble content is insufficient
Solution Approach 1:
The patent merges the hydration process with metal salt precipitation and centrifugal separation into an integrated system. The hydration step simultaneously extracts phospholipids and precipitates metal salts, which are then separated by centrifugation in the same continuous process flow, achieving high acetone-insoluble content without significantly increasing process complexity
Solution Approach 2:
The patent implements a continuous process where hydration, precipitation, and centrifugal separation occur in sequence without interruption. The hydration mixture is directly centrifuged after the hydration period, and the supernatant is processed continuously, maintaining high acetone-insoluble content through uninterrupted separation of phospholipids from metal salts
4Ease of manufacture
If conventional hydration method is used, then production cost is low, but the method is difficult to popularize due to food safety hazards from iron ions
Solution Approach 1:
The patent extracts and removes phospholipid metal salts through centrifugal separation after hydration. The metal salts precipitate during the hydration process and are separated by centrifugation, achieving removal of harmful iron ions to less than 18 mg/kg while maintaining low production cost and high food safety
Solution Approach 2:
The patent converts the harmful effect of metal ions into a beneficial separation process. The metal ions that would normally contaminate the product are utilized as precipitation agents during hydration, forming separable phospholipid metal salts that can be removed by centrifugation, thus transforming a food safety hazard into an effective separation mechanism
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 achieves high acetone-insoluble content (92.5-95.5 g/100 g) and low iron content (≤18 mg/kg), suitable for industrial production, eliminating environmental pollution and food safety risks while reducing production costs.
Implementation Method 1
The main components of the low-iron water-containing phospholipid are phospholipids, oil and water; wherein the water content is 70-80 g/100 g
Implementation Method 2
centrifugal sedimentation and static stratification, to produce low-iron hydrous phospholipids
Implementation Method 3
centrifugal sedimentation and static stratification
Data Source
AI summary
The invention belongs to the technical field of phospholipid processing, in particular to a low-iron hydrous phospholipid and a method for separating low-iron hydrous phospholipids from soybean oil sediments. The main components of low-iron water-containing phospholipids are phospholipids, oil and water; its water content is 70-80 g/100 g; on a dry basis, the content of acetone-insoluble matter is 92.5-95.5 g/100 g; in terms of acetone-insoluble matter, the iron content is less than or equal to 18 mg/kg. The low-iron water-containing phospholipid of the present invention is prepared from soybean oil by a hydration method, and is used to solve the defects of low acetone-insoluble content of the water-containing phospholipid, inability to remove iron ions and the industry's long-term dependence on the solvent method to prepare the powdered phospholipid; At the same time, the method solves the technical problem that “the preparation of powder phospholipid by hydration method cannot realize industrial production”.