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Product Introduction
Lutein, also known as plant lutein, is a carotenoid with the chemical formula C40H56O2. It is widely found in vegetables, fruits, and flowers. It contains two keto rings in its chemical structure and is a major pigment present in the macula of the human retina.
Humans and other mammals cannot synthesize lutein on their own; dietary intake is the sole source. Lutein content is also high in corn, making up 60% of the total carotenoids in corn.
Lutein is commonly found in foods and is often present alongside zeaxanthin. It is a major component of pigments in corn, vegetables, fruits, and flowers. Foods rich in lutein include orange-yellow fruits and vegetables such as papaya, pumpkin, citrus fruits, goji berries, and peaches, with the highest concentrations found in dark green leafy vegetables like kale, spinach, chives, bok choy, celery leaves, and cilantro.
Lutein Production Methods
Drying Method
A new type of rotary drum dryer is used for drying and impacting marigold and lutein. The amount of lutein depends on the drying time when the pendulum's fluctuation rate is between 70% and 90%. At the same drying duration, the amount of lutein obtained at 70°C is less than that at 60°C.
Organic SolventExtraction Method
This is the most commonly used method for extracting lutein. Lutein from marigolds has high solubility in ethanol, is difficult to dissolve in water under neutral conditions, and has higher solubility in alkaline conditions compared to acidic or neutral conditions.
Microwave Extraction Method
Microwave extraction is a rapid heating method that breaks plant cell walls under microwave fields, accelerating extraction rates and improving product yield. This technique is effective for extracting natural pigments, reducing equipment investment and operational costs, and meeting environmental standards.
Supercritical CO2 Extraction Method
This method extracts active substances from plants and animals using supercritical fluid properties. By adjusting temperature and pressure under high pressure and solid mixtures, it extracts the desired substances. The supercritical CO2 extraction method has advantages such as high purity, minimal solvent use, strong dissolution capability, and non-toxic, non-harmful properties. It overcomes the shortcomings of organic solvent extraction, offering high efficiency, short extraction time, and simplicity.
Enzyme-assisted Extraction Method
This method uses cellulase to treat plant cell walls, making intracellular substances more accessible and increasing oil permeability. Enzyme-assisted extraction does not lead to lutein isomerization or degradation in marigold. The all-trans lutein content reaches its highest level in enzyme-treated marigold powder.
Lutein Benefits and Effects
Vision protection
Coloring effect
Antioxidant properties
Slowing early arteriosclerosis
Diabetes prevention
Lutein Applications
Used in food, pharmaceuticals, and other fields.
Lutein Packaging and Storage
Storage Conditions: Store in a sealed, light-proof container, away from high temperatures, in a dry, cool, and well-ventilated place.
Packaging: Bulk in 25 kg cardboard drums, small samples in 1 kg aluminum foil bags, or customized as per customer requirements.
Shipping: By express or logistics, typically arriving within three days by express and five days by logistics. Quotes usually include domestic shipping costs.
Shelf Life: Two years
Source of Extraction - Marigold
Humans and other mammals cannot synthesize lutein, so it must be obtained from dietary sources. Lutein content is high in corn, making up 60% of the total carotenoids. Industrial production primarily extracts lutein from marigold, a herbaceous plant native to Mexico, rich in lutein, making it an ideal raw material for lutein production.
