Application scenarios of molecular distillation of special oils and fats

The widespread application of molecular distillation technology in the refining and purification of various special oils and fats creates greater value for customers

Fish Oil Molecular Distillation Refining

Efficiently extracts and purifies EPA, DHA, and other Omega-3 fatty acids to enhance product purity and nutritional value.

Fish oil is rich in Omega-3 fatty acids such as EPA and DHA, yet these components are sensitive to heat and oxygen, making them prone to oxidative degradation. Traditional refining methods often result in significant nutrient loss and inconsistent product quality.

Molecular distillation effectively addresses these challenges by operating under low-temperature, high-vacuum conditions to remove contaminants while preserving nutritional integrity:

  • Low-Temperature Processing: Protects heat-sensitive components and prevents oxidation of EPA/DHA

  • Contaminant Removal: Effectively eliminates heavy metals, PCBs, and other environmental pollutants

  • Concentration Enhancement: Increases EPA/DHA levels to meet diverse purity requirements

  • Quality Improvement: Enhances product color and flavor while extending shelf life

  • Efficiency Optimization: Increases product yield and reduces production costs

Fish Oil Molecular Distillation Features

Low-Temperature Processing

Operates at 40°C-80°C, significantly lower than conventional refining temperatures, effectively preserving bioactive components.

High-Precision Separation

Increases EPA/DHA concentration from 30% to over 90%, meeting diverse product grade requirements.

Safety Assurance

Effectively removes contaminants and off-flavors, ensuring compliance with international safety standards and regulations.

Eco-Efficiency

Reduces energy consumption by over 30% compared to traditional methods, with zero hazardous waste emissions, aligning with environmental requirements.

Practical Application Case

Performance comparison after implementing molecular distillation technology in a large-scale fish oil production facility:：

EPA/DHA Purity

Increased from 32% in crude fish oil to over 85%, meeting pharmaceutical-grade standards

Contaminant Removal

Heavy metals reduced by 99.5%, PCBs by 99.9%, exceeding industry requirements

Product Stability

Oxidation stability improved by 3x, shelf life extended to 24 months

Production Benefits

Overall production costs reduced by 18%, product value-added increased by over 40%

Fish Oil Product Applications

Pharmaceutical-Grade Fish Oil

Used in high-purity Omega-3 capsules for auxiliary treatment of cardiovascular and cerebrovascular diseases.

EPA/DHA ≥90% Low odor Medical certification

Nutraceutical-Grade Fish Oil

Dietary supplements for improving memory, vision protection, and cardiovascular health.

EPA/DHA 60-80% High bioavailability Neutral flavor

Infant Formula Fish Oil

Added to infant nutrition products to support brain and visual development.

Ultra high purity Microencapsulation Easy dispersion

DiEster Oil Molecular Distillation Preparation

An efficient separation and purification process for producing high-quality DiEster oil products to meet specialized industrial requirements.

DiEster Oil Molecular Distillation Preparation

DiEster oil, as an important functional lipid, possesses a unique molecular structure that imparts excellent low-temperature fluidity, oxidation stability, and biodegradability, making it irreplaceable in various high-end industrial applications.

Molecular distillation enables high-precision purification of DiEster oil under mild conditions, effectively addressing issues associated with traditional methods such as low product purity and thermal degradation of sensitive components, thereby providing an ideal solution for industrial-scale DiEster oil production.

Advantages of Molecular Distillation in DiEster Oil Production

Molecular distillation technology provides an ideal solution for the efficient production of DiEster oil.

Core Advantages of DiEster Oil

DiEster oil is a structurally engineered functional lipid that demonstrates exceptional comprehensive performance through molecular design and precision synthesis, offering significant advantages in high-end applications:

  • Excellent Oxidation Stability
    Oxidation induction period is 3-5 times longer than conventional mineral oils, significantly extending service life while reducing replacement frequency and maintenance costs.
  • Outstanding Low-Temperature Fluidity
    Pour point as low as -60°C, maintaining optimal flow performance even in extreme cold environments.
  • Superior Biodegradability
    Biodegradation rate exceeds 90%, meeting stringent environmental requirements – ideal for ecologically sensitive applications.
  • Excellent Material Compatibility
    High compatibility with various rubber and plastic sealing materials, preventing swelling or hardening issues.
  • Exceptional Lubricity
    Combines low friction coefficient with high load-carrying capacity, effectively reducing equipment wear and extending operational lifespan.

Characteristics of Molecular Distillation for DiEster Oil Production

Molecular distillation provides an ideal solution for efficient DiEster oil preparation, offering significant advantages over conventional vacuum distillation:

  • Efficient Separation of DiEsters from MonoEsters and Unreacted Feedstock
    Utilizes differences in molecular mean free path to achieve high-purity separation, significantly enhancing product purity.
  • Reduced Acid Value and Improved Oxidation Stability
    Effectively removes free fatty acids, reducing acid value below 0.1 mg KOH/g and markedly improving oxidation stability.
  • Deep Removal of Low-Molecular-Weight Impurities
    Eliminates moisture, volatile compounds, and residual catalysts, enhancing product purity and storage stability.
  • Low-Temperature Operation Preserves Active Components
    Operates under high vacuum with temperatures 50-100°C lower than conventional distillation, protecting heat-sensitive components.
  • Continuous Processing Enhances Efficiency
    Enables continuous production with single-unit daily throughput of 5-20 tons, significantly improving efficiency and product consistency.

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Characteristics of DiEster Oil Molecular Distillation Technology

High-Purity Separation

DiEster content can reach over 99%, significantly exceeding conventional process levels.

Low Acid Value Control

Product acid value can be maintained below 0.1 mg KOH/g, enhancing product stability.

Deep Impurity Removal

Effectively eliminates moisture, small-molecule volatiles, and residual catalysts.

Process Flexibility

Process parameters can be adjusted according to different raw materials and product requirements, ensuring strong adaptability.

Key Parameters of DiEster Oil Molecular Distillation Process

Parameter Range Influencing Factors Optimization Goal
Evaporation Temp 160-220°C Feed composition, product requirements Ensure effective separation, prevent thermal decomposition
System Pressure 0.1-5 Pa Equipment performance, material properties Lower boiling point, improve separation efficiency
Feed Rate 5-15 L/h Material viscosity, equipment capacity Optimize residence time, balance output and quality
Wiper Speed 250-400 rpm Material viscosity, film formation Achieve uniform thin film, enhance mass transfer efficiency
Condensation Temp -15 to 30 ° C Fraction boiling point, product requirements Ensure effective condensation, improve product recovery

Primary Application Fields of DiEster Oil

DiEster oil is widely used in various high-end sectors due to its excellent performance:

Household & Culinary

Serves as a direct substitute for conventional edible oils (e.g., soybean, peanut, rapeseed oil) in daily cooking scenarios.

Industrial Food Processing

Extensively used in processed foods to replace traditional oils and optimize product health profiles.

Functional Foods & Dietary Supplements

Added as a functional ingredient or formulated into dedicated products for weight management and blood lipid control.

Infant Formula Nutrition

Potential application in infant milk powder to replace partial traditional fats, aiming to optimize fat digestion and absorption.

Nutraceutical Excipients

Acts as a carrier for fat-soluble vitamins (e.g., vitamins A/D/E) to enhance nutrient solubility while contributing health benefits.

Functional lipid molecular distillation processing

Provide customized separation and purification solutions based on the characteristics of functional oils, while retaining the active ingredients

Difficulties and Solutions in Processing Functional Oils and Fats

Functional oils refer to oils with specific physiological activities, such as conjugated linoleic acid, plant sterol ester microalgae oil, etc. These oils often contain thermosensitive active ingredients, and traditional processing methods can easily lead to loss of activity.

Molecular distillation technology provides an ideal solution for functional oil processing:

  • Biological activity of functional components retained under low-temperature operating conditions

  • Accurately separate different functional components to improve product efficacy

  • Remove harmful substances and odor components from oils and fats

  • Improve product purity and stability, extend shelf life

  • Can achieve customized processing of various functional oils and fats

Main functional oil products

Conjugated linoleic acid (CLA)

It has the functions of regulating blood lipids and enhancing immunity, and is widely used in healthy food and health products

Purity 90%+ Good stability

Phytosterol ester

It can reduce cholesterol, prevent cardiovascular disease and other effects, and is used as a functional food additive

High absorption rate High stability No odor

Microalgae oil

Rich in omega-3 fatty acids such as DHA, it is an ideal source of DHA for vegetarians and is used in health care products and infant foods

High DHA content Pure plant source sustainable

Coenzyme Q10 oil

It has antioxidant and immunity enhancing functions and is widely used in health care products and cosmetics industry

High biological activity Easily absorbed Good stability

Functional oil processing case

The effect of using molecular distillation technology to produce high-purity conjugated linoleic acid in a functional food enterprise：

Product purity

The content of conjugated linoleic acid increased from 65% of raw materials to 92%, reaching the international leading level

Activity retention

The activity retention rate of functional ingredients is more than 95%, which is much higher than 70% of the traditional process

Product stability

The oxidation induction period was extended to 180 days, and the product shelf life was more than doubled

Market feedback

Product added value increased by 50%, and market competitiveness was significantly enhanced