Pectin Methylesterase Enzyme Powder – Food Grade PME for Juice Processing & Pectin Modification
Pectin Methylesterase (PME) is a functional enzyme used to modify pectin structure in fruit and vegetable processing. It catalyzes the de-esterification of pectin, enabling better control of texture, viscosity and clarification performance in food systems.
This enzyme is widely applied in juice processing, fruit preparation and industrial food applications where controlled pectin transformation is required. It is an essential component in advanced Food Grade Enzymes solutions and can be used together with Industrial Enzymes systems for optimized processing efficiency. Product Overview
What is Pectin Methylesterase?
Pectin methylesterase is an enzyme that removes methyl groups from pectin molecules, converting high-methoxyl pectin into low-methoxyl pectin. This reaction plays a key role in modifying pectin behavior during food processing.
Key Functional Benefits
- Controlled pectin structure modification
- Improved process consistency in fruit systems
- Enhanced downstream enzyme synergy
- Better filtration and process handling
- Suitable for multi-enzyme systems
Technical Specifications
Basic Information
Appearance: Light yellow powder
Activity: Standard industrial specification available
Solubility: Easily soluble in water
Storage: Cool and dry conditions
Shelf Life: 24 months
Buyer Considerations
- Application type (juice, fruit prep, fermentation)
- pH and temperature conditions
- Compatibility with other enzymes
- Target processing outcome
| Test Item | Method / Reference | Specification | Result* | Conclusion |
| Appearance | Visual | Off-white to light brown powder | Light beige powder | Conforms |
| Odor | Organoleptic | Characteristic enzyme odor, no off-odor | Characteristic | Conforms |
| Enzyme Identification | Declared as Pectin methylesterase / Pectinesterase, EC 3.1.1.11 | Positive | Positive | Conforms |
| Pectin Methylesterase Activity | Spectrophotometric methanol-release assay, 412 nm; principle aligned with OIV PME activity method | ≥ 5,000 U/g** | 6,480 U/g | Conforms |
| Secondary Activity Check | Constant-pH titrimetric confirmation of de-esterification activity | Positive correlation with primary assay | Positive | Conforms |
| pH (1% solution, 25°C) | Potentiometric | 3.5 – 6.5 | 4.72 | Conforms |
| Loss on Drying | 105°C / gravimetric | ≤ 8.0% | 4.3% | Conforms |
| Ash | Gravimetric | ≤ 10.0% | 3.1% | Conforms |
| Lead (Pb) | ICP-MS / heavy metals | ≤ 5 mg/kg | 0.42 mg/kg | Conforms |
| Total Aerobic Count | Plate count | ≤ 10,000 CFU/g | 620 CFU/g | Conforms |
| Yeast & Mold | Plate count | ≤ 100 CFU/g | < 10 CFU/g | Conforms |
| Coliforms | Microbiological limit test | Negative / g | Negative | Conforms |
| Escherichia coli | Microbiological limit test | Negative / 25 g | Negative | Conforms |
| Salmonella | Microbiological limit test | Negative / 25 g | Negative | Conforms |
Product Features
Process Advantages
- Selective pectin de-esterification mechanism
- Supports controlled viscosity and texture
- Improves processing stability
- Enhances multi-enzyme efficiency
Industrial Value
Compared to general pectinase, PME provides targeted modification instead of random degradation, making it suitable for high-end formulations and controlled processing systems.
How to Use
Application Steps
- Dissolve enzyme powder in water
- Add into processing system
- Adjust pH and temperature conditions
- Maintain reaction time as required
- Proceed to next processing stage
Usage Notes
- Avoid high temperature exposure
- Conduct pilot testing before large-scale use
- Optimize dosage based on application
Application Scenarios
Food Processing
- Fruit juice processing
- Vegetable processing
- Beverage production
- Pectin structure control
Advanced Formulation
Industrial Use
- Enzyme system optimization
- Extraction improvement
- Processing efficiency enhancement
Benefits for Buyers
- Improve processing control
- Enhance product consistency
- Reduce formulation uncertainty
- Support scalable production
- Enable flexible product development
Customization Options
- Customized activity specifications
- Bulk packaging options
- Private label support
- Application-specific solutions
Production Process
- Raw material preparation
- Enzyme extraction
- Purification and concentration
- Drying and powder formation
- Quality testing
- Packaging
FAQ
What is the main function of PME?
It modifies pectin structure by removing methyl groups, improving process control.
Is it suitable for food applications?
Yes, it is widely used in food processing systems.
Can it be used with other enzymes?
Yes, it works well with multi-enzyme systems.
What other products are available?
Related products include Food Grade Enzymes, NMN Powder, Allulose Brown Sugar, and Choline Chloride. 
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