Executive Summary
A leading nutraceutical ingredient manufacturer required a fully automated, GMP-compliant Marigold Lutein Extraction Plant to produce high-purity Lutein, Zeaxanthin, and natural carotenoid concentrates from Marigold Flowers (Tagetes erecta). The products were intended for dietary supplements, eye health formulations, functional foods, pharmaceutical preparations, animal nutrition, and cosmetic applications.
The customer required a turnkey solution capable of maximizing carotenoid recovery, preserving pigment stability, minimizing solvent consumption, and consistently producing export-grade lutein extracts conforming to international nutraceutical standards.
MECH O TECH LLP successfully designed, engineered, manufactured, supplied, installed, and commissioned a 25 TPD Marigold Lutein Extraction Plant integrating advanced solvent extraction, oleoresin production, saponification, purification, crystallization, vacuum solvent recovery, drying, and intelligent PLC-SCADA automation.
The facility consistently produces premium Lutein and Zeaxanthin with high purity, excellent stability, superior color value, and outstanding production efficiency.
Customer Background
The customer manufactures botanical ingredients for nutraceutical companies, pharmaceutical manufacturers, functional food producers, dietary supplement brands, animal feed manufacturers, cosmetic companies, food ingredient suppliers, and global export markets. Growing worldwide demand for eye health supplements and natural carotenoids required expansion into a modern GMP-compliant manufacturing facility.
Customer Challenges
Before modernization, the customer faced:
- Low lutein recovery
- Poor pigment stability
- High solvent consumption
- Manual production inconsistencies
- Long extraction cycles
- High operating costs
- Variable product purity
- Limited production capacity
- Difficulty meeting export specifications
Project Objectives
MECH O TECH LLP developed a turnkey plant capable of:
- Processing 25 MT/day of Marigold Flowers
- Producing high-purity Lutein and Zeaxanthin
- Maximizing carotenoid recovery
- Recovering more than 99% extraction solvent
- Reducing steam and utility consumption
- Meeting GMP, WHO-GMP, HACCP, FSSAI, and international nutraceutical standards
- Supporting future expansion up to 100 TPD
Raw Material
- Botanical Name
- Tagetes erecta
- Common Name
- Marigold Flower
- Plant Part Used
- Fresh or Dried Flower Petals
- Moisture Content
- 10–70% (depending on processing method)
- Daily Processing Capacity
- 25,000 kg/day
Finished Product
Available Options
Applications
- Eye Health Supplements
- Softgel Capsules
- Tablets
- Functional Foods
- Beverages
- Animal Feed Premixes
- Cosmetic Formulations
- Pharmaceutical Products
Process Flow
Process Description
Raw Material Preparation
Fresh or dried marigold petals are cleaned, dried (if required), and milled into a uniform particle size to maximize extraction efficiency.
Solvent Extraction
Prepared material is processed in stainless steel extraction vessels using food-grade solvents under controlled operating conditions.
The extraction process provides:
- Maximum carotenoid recovery
- Excellent pigment preservation
- High extraction efficiency
- Uniform batch quality
- Reduced solvent losses
Filtration
The extract is clarified using pressure filtration systems to remove insoluble plant material before concentration.
Vacuum Solvent Recovery
The filtered extract passes through vacuum evaporators where over 99% of solvent is recovered, condensed, purified, and recycled.
Benefits include:
- Reduced operating costs
- Improved environmental sustainability
- Enhanced process safety
- High product purity
Lutein Oleoresin Production
Following solvent recovery, concentrated lutein oleoresin is obtained as the primary intermediate product.
Saponification
Controlled alkaline hydrolysis converts lutein esters into free lutein while preserving carotenoid integrity.
Purification & Crystallization
Advanced purification and crystallization technologies produce highly purified lutein crystals with excellent stability and color intensity.
Centrifugation & Vacuum Drying
Lutein crystals are separated, dried under vacuum, and milled into free-flowing powder suitable for downstream formulation.
Quality Standardization
Finished products are analyzed for:
- Lutein Content
- Zeaxanthin Content
- Total Carotenoids
- Residual Solvent
- Moisture
- Particle Size
- Color Value
- Heavy Metals
- Microbial Limits
- Purity
Major Equipment Supplied
- Raw Material Cleaning System
- Dryer (Optional)
- Grinding Mill
- Stainless Steel Extraction Vessels
- Solvent Storage Tanks
- Pressure Leaf Filters
- Vacuum Evaporators
- Solvent Recovery System
- Saponification Reactors
- Crystallizers
- Centrifuges
- Vacuum Tray Dryer / Conical Vacuum Dryer
- Pulverizer
- Ribbon Blender
- Product Storage Tanks
- PLC-SCADA Automation Panel
- Electrical MCC
- Instrumentation Package
- CIP System
Automation Features
The plant incorporates intelligent automation including:
- Automatic Recipe Management
- Extraction Sequence Control
- Temperature Monitoring
- Solvent Flow Monitoring
- Vacuum Control
- Reactor Control
- Crystallization Monitoring
- Batch Traceability
- Alarm Management
- Production Analytics
- Utility Monitoring
- Remote Diagnostics
- Industry 4.0 Connectivity
GMP & Safety Features
The plant is engineered to meet international nutraceutical manufacturing standards. Features include:
- SS 316L product-contact surfaces
- Hygienic sanitary piping
- Closed-loop solvent handling
- Explosion-proof electrical systems
- Nitrogen blanketing
- Food-grade seals and gaskets
- CIP-compatible construction
- Validation-ready equipment
- GMP-compliant layout
- HACCP-ready process design
Plant Utilities
- Steam Boiler
- Cooling Tower
- Chilled Water System
- Vacuum System
- Air Compressor
- Soft Water System
- Electrical Power
- Nitrogen Supply
Sustainability Features
The plant incorporates environmentally responsible engineering through:
- Closed-loop solvent recovery
- Heat recovery systems
- Water conservation
- Optimized steam utilization
- Energy-efficient vacuum systems
- Reduced emissions
- Automated utility optimization
- Eco-friendly process engineering
Customer Benefits
Following successful commissioning, the customer achieved:
- Higher lutein recovery
- Improved zeaxanthin yield
- Excellent pigment stability
- More than 99% solvent recovery
- Reduced production costs
- Lower utility consumption
- Increased production capacity
- Consistent export-grade quality
- Better regulatory compliance
- Excellent return on investment
Plants Used In This Project
Why Mech O Tech LLP?
MECH O TECH LLP is a globally trusted manufacturer of turnkey extraction plants for nutraceuticals, herbal extracts, natural colors, pharmaceuticals, food ingredients, and specialty botanical products. With over 30 years of engineering excellence, our advanced extraction technology, solvent recovery systems, purification expertise, and PLC-SCADA automation enable customers worldwide to manufacture premium nutraceutical ingredients with exceptional efficiency and international quality standards.
Conclusion
The Marigold Lutein Extraction Plant from MECH O TECH LLP provides a complete turnkey solution for producing premium Lutein, Zeaxanthin, and natural carotenoid extracts with exceptional purity and stability. By integrating advanced solvent extraction, precision purification, intelligent automation, and hygienic GMP engineering, the facility delivers world-class product quality, lower operating costs, and sustainable manufacturing performance.
Key Technical Highlights
- Raw Material
- Tagetes erecta (Marigold Flower)
- Plant Capacity
- 2–100 TPD (customizable)
- Finished Products
- Lutein Oleoresin, Free Lutein, Zeaxanthin, Natural Carotenoid Extracts
- Technology
- Solvent Extraction + Saponification + Crystallization + Vacuum Solvent Recovery
- Solvent Recovery
- Up to 99%
- Automation
- PLC-SCADA with Industry 4.0 Integration
- Construction Material
- SS 304 / SS 316L
- Compliance
- GMP, WHO-GMP, HACCP, FSSAI, USFDA-ready hygienic design, CE-compliant equipment
- Applications
- Nutraceuticals, Pharmaceuticals, Functional Foods, Animal Nutrition, Cosmetics
Why Global Manufacturers Choose MECH O TECH LLP
- 30+ years of engineering expertise in botanical extraction technologies
- Complete turnkey execution from laboratory validation to commercial production
- Customized plants from 100 kg/day pilot systems to 100 TPD industrial facilities
- High-efficiency solvent extraction with 99% solvent recovery
- Advanced purification and crystallization technology
- Intelligent PLC-SCADA automation with full batch traceability
- GMP, WHO-GMP, USFDA, EU-GMP, and HACCP-compliant hygienic engineering
- Complete installation, validation, operator training, annual maintenance support, spare parts supply, and lifetime technical assistance
- Extensive expertise in nutraceuticals, herbal extracts, natural colors, oleoresins, essential oils, pharmaceuticals, and food processing plants
Want Results Like This For Your Plant?
Mechotech engineers are ready to assess your process and design the right plant for your target output.
Get a Free Consultation
