Noxanthin

Updated: 2026-09-12

Overview

Noxanthin is a naturally occurring carotenoid pigment known for its antioxidant properties. It is commonly found in certain plants and microorganisms, where it contributes to their vibrant orange to red hues. Unlike more well-known carotenoids like beta-carotene or astaxanthin, noxanthin has unique chemical characteristics that make it suitable for specialized applications. In industrial contexts, noxanthin is valued for its stability and non-toxic nature, making it a preferred choice for food coloring and dietary supplements. Its antioxidant properties also lend it potential uses in pharmaceuticals and cosmetics, where oxidative stress reduction is desired.

Physical and Chemical Properties

Noxanthin is typically isolated as an orange to red powder, with solubility in organic solvents like ethanol or acetone but poor solubility in water. Its molecular structure includes conjugated double bonds, which are responsible for its color and antioxidant activity. The pigment is relatively stable under controlled storage conditions but may degrade when exposed to prolonged light, heat, or oxygen. Its melting and boiling points are not well-documented, but it decomposes at high temperatures, limiting its use in high-heat processing applications.

Main Applications

Noxanthin is primarily used as a natural food colorant, especially in products where synthetic dyes are undesirable. Its vibrant hue and safety profile make it suitable for beverages, confectionery, and dairy products. In the pharmaceutical and nutraceutical industries, noxanthin is incorporated into dietary supplements for its antioxidant benefits. Research suggests potential applications in skincare products to combat oxidative damage, though further studies are needed to confirm efficacy.

Safety and Storage

Noxanthin is generally recognized as safe (GRAS) for food use, with no significant toxicity reported at standard dosages. However, handling should follow good laboratory practices, including the use of gloves and eye protection to avoid irritation. Storage requires protection from light, moisture, and oxygen to prevent degradation. Ideal conditions include airtight containers in a cool, dark environment. Bulk procurement should prioritize suppliers who provide proper packaging and stability data.

B2B Procurement Guide

When sourcing noxanthin, buyers should prioritize suppliers with certifications such as ISO, GMP, or organic compliance, depending on the intended use. Key factors include purity levels (typically 90-98%), solvent residues, and heavy metal content. Price varies based on quantity and purity, with bulk orders often discounted. Request samples for lab testing before large-scale purchases. Ensure suppliers provide detailed technical data sheets and comply with regional regulations like FDA or EFSA standards for food-grade products.