🧬 Who Is Phytolon? Using Baker's Yeast to "Brew" Beet Red
- Founded: 2018, Yokneam Illit, Israel
- Founders: Halim Jubran (CEO) + Tal Zeltzer (CTO), technology originating from the Weizmann Institute of Science
- Approach: Precision fermentation
- Core process:
- Take the gene responsible for producing betanin (the red pigment in red beets) and insert it into baker's yeast (Saccharomyces cerevisiae)**
- Grow the yeast in a fermentation tank; the yeast "secretes" the red pigment into the fermentation broth
- Filter out the yeast cells and residual DNA
- The result is fermentation-derived betanin — the same molecule as plant-extracted beet red
Analogy:
Plant red = grow grapes and press them
Insect red = raise bugs and extract their color
Phytolon = have yeast "brew" the color recipe from plant genes inside a beer-style fermenter
1. Why investors like it
In May 2026, Phytolon closed a $23.6 million Series B, bringing total funding to ~$43.6 million. Investors include DSM Venturing, Ginkgo Bioworks, Rich Products Ventures, Colorcon Ventures, and others.
The selling point isn't "more natural." It's three things food manufacturers actually care about:
- Supply stability: No weather dependence, no growing regions, no harvest seasons
- Clean label: Final product contains no yeast cells or GMO DNA → can claim "No Artificial Colors" in the U.S.
- ESG-friendly metrics (company-reported vs. conventional agricultural extraction):
- GHG emissions ↓90%
- Water use ↓95%
- Land use ↓88%
2. Regulatory status
- Submitted a color additive petition (CAP 4C0326) to the FDA in 2024
- In February 2026, the FDA proposed listing fermentation-derived beet red as an exempt-from-certification natural colorant for general food use (with exceptions: infant formula, USDA-regulated meat/poultry, standardized foods)
- However, due to third-party objections, the effective date was stayed — not because of safety concerns, but due to administrative procedural pauses
So Phytolon's current position:
Technology ready + Capital secured + Macro trend favorable in the U.S., but the regulatory switch hasn't fully flipped yet.
❤️ Fermentation Red vs. Plant Red vs. Insect Red
1. Plant Red:
Beet Red, Radish Red, Paprika, Anthocyanins
How it's made:
Grow plants → water/alcohol extraction → concentrate/dry
Examples:
- Beet red (betanin): Yogurt, ice cream, juice, natural noodles
- Paprika extract: Orange-red, more stable than beet red
- Anthocyanins (grape skin, purple sweet potato, black rice): pH-sensitive, changes color
- Radish red: Stable option used in some Asian applications
Pros: Consumers instantly understand "plant extract" — very clean-label friendly
Cons:
- Batch-to-batch color variation
- Beet red is sensitive to heat, light, and oxygen; darkens under high-temperature processing
- Crop yields and prices fluctuate with weather and region
- Plant impurities may introduce off-flavors or astringency
2. Insect Red: Carmine / Cochineal / E120
How it's made:
Female cochineal insects (raised on cactus pads) → dried → ground → extracted with water/alcohol → carminic acid
Pros:
- The most technically capable natural red
- Heat-stable, light-stable, binds well with meat proteins
- Preferred for candies, tablet coatings, lipsticks, premium baked goods
Cons:
- Animal-derived → excluded from vegan, halal, kosher, and certain religious diets
- Rare allergy/asthma risk for sensitive individuals
- Consumer discomfort when they learn "it's made from bugs"
- High cost; supply concentrated in Peru and a few other regions
If you see Carmine / Cochineal / E120 / Crimson Lake / Natural Red 4 on a label, that's insect red.
3. Fermentation Red: Traditional (Monascus) + Next-Gen (Yeast-Derived)
How it's made:
Microorganisms act as factories → produce pigment in fermentation tanks → purify
Two subcategories worth distinguishing:
- Traditional fermentation red: Monascus (red yeast rice) fermented on rice/soybeans → Monascus red/pigment. Common in Chinese cuisine. Heat- and acid-stable; good protein binding.
- Next-gen fermentation red: Genetically engineered yeast → betanin / cactus fruit yellow (Phytolon route, also Ginkgo Bioworks collaborations)
Next-gen pros:
- Not dependent on weather or seasons
- Final product can be cell-free and GMO-DNA-free
- High purity, minimal off-flavor
- Wider pH tolerance; better heat/light stability than plant beet red
- Excellent water/land/carbon footprint
Next-gen challenges:
- Consumers don't intuitively understand "precision fermentation"
- Regulatory pathway is slow (U.S. FDA, EU novel food, etc.)
- Cost still being driven down; not yet competitive with synthetic colors at scale
- Semantic battle over whether "fermentation-derived" counts as "natural"
⭕ Quick Comparison Table
🍬 How Food Manufacturers Actually Choose
- Strawberry yogurt / jelly / children's frozen treats
→ Plant beet red sounds best to consumers; if heat treatment causes fading, use fermentation beet red or anthocyanin blends. - Processed meat / cured sausages / braised products
→ Monascus red works great (Chinese tradition, heat-tolerant, protein-binding). For brighter red, carmine is stronger — but not suitable for vegan/halal/kosher lines. - Candies / gummies / cake frosting / lipstick
→ Carmine gives the best color saturation and shelf stability. Vegan brands switch to fermentation red or plant red. - Plant-based meat / snacks / cookies / dips
→ Next-gen fermentation red is the main battleground: more stable than plant red, more label-friendly than insect red. - Premium bakery + ESG reporting
→ "Yeast-fermented beet red" writes a much better sustainability slide than "Peruvian insect red."
🎈 One-Sentence Summary
Plant red:
Grown by the earth — consumer-friendly but fragile
Insect red: Produced by bugs — technically excellent but turns off a segment of consumers
Fermentation red: Brewed by microbes — stable supply, clean label, ESG-friendly; the "second supply layer" of natural colors
Phytolon is the most advanced commercial player on this path:
Don't grow beets. Don't kill cochineal bugs. Let yeast "ferment" the red out of a plant gene.
