Artificial food colors (or synthetic food dyes) are chemically synthesized substances used to enhance or impart color to processed foods and beverages. Unlike natural colorants derived from plants, animals, or minerals, artificial colors are created in laboratories to provide vibrant, consistent, and cost-effective hues. They are widely used in the food industry but subject to strict regulatory scrutiny due to potential health concerns.
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Allura RedDark red uniform powder, odorless. Soluble in water, it is a red solution with a slight yellow color. Soluble in glycerol and propylene glycol, slightly soluble in ethanol, and insoluble in oil.read more
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Chlorophyllin Copper Complex Sodium SaltsChlorophyllin Copper Complex Sodium Salts is a mixture of sodium copper chlorophyllin A and B. Dark green powder, odorless or slightly smelly. It is easily soluble in water. The aqueous solution isread more
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Ponceau 4RRed to crimson uniform powder or particles, odorless. Strong light and heat resistance (105 ℃). It is stable to citric acid and tartaric acid. Poor reduction resistance and turns brown in case ofread more
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Sunset YellowOrange-red uniform powder or particles, odorless. It is easily soluble in water (6.9%, 0 ℃), glycerol and propylene glycol, slightly soluble in ethanol, and insoluble in oil. The aqueous solution isread more
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TartrazineOrange-yellow uniform powder or particles, odorless. It is easily soluble in water (10g / 100mL, room temperature), glycerol and propylene glycol. The neutral or acidic aqueous solution is goldenread more
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Brilliant BlueDark purple uniform powder or particles, metallic luster, odorless. Soluble in water (18.7g/100ml, 2L ℃), green-blue solution, soluble in ethanol (1.5g/100ml, 95% ethanol, 21 ℃), glycerol andread more
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Titanium DioxideWhite amorphous powder, odorless and tasteless. Insoluble in water, hydrochloric acid, dilute sulfuric acid, ethanol, and other organic solvents, slowly soluble in hydrofluoric acid and hotread more
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IndigotineDark purple-blue to dark purple-brown uniform powder, odorless. Soluble in water (1.1g/100ml, 21 ℃) as a blue solution. Soluble in glycerol and ethylene glycol, insoluble in ethanol and grease. Heatread more
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ErythrosineRed to reddish-brown uniform powder or particles, odorless. Good heat resistance (105 ℃) and reduction resistance, but poor light resistance and acid resistance. Precipitation can occur in acidicread more
Food colorants are substances used to impart or enhance the color of food products, representing the most visually impactful category of food additives. Based on their origin, food colorants can be classified into two main types:
Natural Colorants
Primarily extracted and isolated from plant, animal, or mineral sources (e.g., anthocyanins from berries, curcumin from turmeric, carmine from insects).
Advantages: Generally recognized as safe (GRAS) with higher consumer acceptance.
Limitations: Lower stability (sensitive to light, heat, pH) and limited color range.
Synthetic Colorants
Produced via chemical synthesis (e.g., Allura Red AC, Tartrazine, Brilliant Blue FCF).
Advantages: Superior color intensity, stability, cost-effectiveness, and broader color spectrum.
Safety Concerns: Potential residues from raw materials or by-products during synthesis require strict regulatory control.
Regulatory Oversight:
Stringent standards govern production, quality, and usage limits (e.g., FDA 21 CFR, EU E-number system).
Synthetic colorants are subject to batch certification in many regions to ensure compliance.
Special Category: Color Lakes
A modified form of synthetic colorants, produced by adsorbing water-soluble dyes onto hydrated alumina (derived from reactions between aluminum salts and alkalis).
Properties: Insoluble in water, used for oil-based or dry-mix products (e.g., coated candies, powdered beverages).
Key Consideration:
Balancing visual appeal with safety mandates rigorous testing for heavy metals, impurities, and acceptable daily intake (ADI) thresholds.
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