Natural colorants in plant-based foods have evolved from a "nice-to-have" feature to a core requirement of "clean labeling." Driven by tightening regulations (e.g., the new GB2760 standards) and consumers' increasing pursuit of the "all-plant" concept, the industry is undergoing technological iterations centered on two major directions: "simulating realistic meat textures" and "multifunctionalization."
Core Trends: From "Coloring" to "Simulation + Function"
1. Clean Labeling Drives Accelerated Substitution
Core consumers of plant-based foods are highly sensitive to ingredient lists. Approximately 70% of consumers explicitly prefer plant-derived colorants, prompting manufacturers to rapidly phase out synthetic colorants. Natural colorants are not merely coloring agents but also serve as a visual endorsement of a "no-additive" brand promise.
2. Dynamic Color Change Technology (A Key Challenge for Plant-Based Meat)
To address the issue of plant-based meat lacking the "cooking color change" of real meat, technological focus is on simulating the myoglobin oxidation process. By combining pigments like beet red and red rice red with pH control technology, a natural transition from red to brown is achieved during the frying or grilling of plant-based patties, significantly enhancing realism.
3. Microalgae and Fermentation-Derived Colorants as a New Frontier
To solve common issues in plant-based foods like "beany flavor" or dull colors, pigments such as phycocyanin (blue), spirulina (green/blue), and astaxanthin from Haematococcus pluvialis (red) are widely used in plant-based milk and ice cream. Microalgae pigments not only provide vibrant colors but also add protein nutrition, aligning with the trend of "colorant + nutrition" multifunctionality.
Mainstream Applications by Product Category
Plant-Based Category: Plant-Based Meat (Burger/Sausage)
Core Coloring Need: Simulate raw meat red, cooked meat brown, fat white
Mainstream Natural Colorant Solutions: Beet Red (raw meat red), Red Rice Red/Sorghum Red (cooked meat brown), Curcumin (yellowish-white for fat tinting)
Plant-Based Category: Plant-Based Milk/Yogurt
Core Coloring Need: Mask base color, achieve creamy white/fruit tones
Mainstream Natural Colorant Solutions: Curcumin + Carotene (creamy yellow), Phycocyanin (blueberry/spirulina flavor tones), Anthocyanins (strawberry/blueberry)
Plant-Based Category: Plant-Based Ice Cream
Core Coloring Need: Vibrant fruit colors, color stability against melting
Mainstream Natural Colorant Solutions: Spirulina Extract (blue/green), Beetroot Powder (red), Gardenia Blue (acid/alkali-resistant blue)
Plant-Based Category: Plant-Based Cheese
Core Coloring Need: Simulate Cheddar yellow, Mozzarella white
Core Coloring Need: β-Carotene, Annatto (classic cheese yellow)
Technical Challenges and Breakthroughs
- Stability Bottlenecks: Natural colorants generally face instability under light and heat. For example, beet red easily fades during high-temperature processing, and β-carotene is prone to oxidation under light. The industry is addressing this with microencapsulation and nanoemulsion technologies to lock in color and extend the shelf life of plant-based meats in cold chains.
- Flavor Interference: Some plant extracts (e.g., turmeric, beetroot) carry strong inherent flavors that may interfere with the intended "meaty" or "creamy" taste of plant-based products. Solutions include using high-purity extracts or employing fermentation methods to produce flavor-neutral pigments (e.g., fermentation-derived β-carotene).
Policy and Market Directions
- Regulatory Support: China's new GB2760 standard lists natural and synthetic colorants separately, granting priority status to natural colorants for equivalent effects. The FDA recently added Gardenia Blue to its exempt list, providing a new blue option for plant-based beverages.
- Cost Considerations: Although the cost of natural colorants remains higher than that of synthetic ones, consumer price tolerance is relatively higher in the premium plant-based segment. Achieving cost reduction through scaling up biosynthesis technologies (e.g., fermentation-derived pigments) will be a critical pathway for the next 3-5 years.
Conclusion: In the plant-based sector, natural colorants are no longer mere auxiliary ingredients but are now core carriers for product differentiation and clean label strategy. Future competition will center on who can provide natural coloring solutions that are "more stable, more realistic, and flavor-neutral."
