Dual Mechanism: Archaea Inhibition + H₂→Propionate Redirection
SeaTrace™ SC-1 achieves approximately 50% in-vitro enteric methane reduction through two simultaneous, complementary pathways — not one. This dual action is what makes the methane reduction robust while protecting ruminant digestibility and feed efficiency.
The Rumen Fermentation Hydrogen Economy
The rumen is an anaerobic fermentation chamber. Plant fibre is broken down by microbes, generating volatile fatty acids (VFAs) for the host's energy — but also producing large quantities of free hydrogen (H₂) as a metabolic by-product. Methanogenic archaea consume that H₂ to produce methane (CH₄), venting 2–12% of the animal's gross energy intake as waste gas. Effective methane mitigation must manage the rumen hydrogen economy — not just block one pathway.
- Blocks CH₄ production at the archaea
- H₂ accumulates in the rumen
- Elevated H₂ suppresses fibre digestion
- Animal loses metabolizable energy
- Feed efficiency and growth rate decline
- Blocks CH₄ at the archaea (Direct)
- H₂ redirected to propionate pathway
- Rumen H₂ partial pressure stays low
- Propionate = glucose precursor for animal
- Feed efficiency and milk yield preserved
Two Pathways. One Additive. Complementary Action.
Sulphated polysaccharides — bioactive derivatives released from tropical red seaweed during solid-state fermentation — directly interact with the cell envelope of methanogenic archaea. These compounds disrupt membrane integrity and interfere with key enzymes in the methanogenesis pathway, particularly methyl-coenzyme M reductase (MCR), reducing archaeal methane output at the source.
→ Archaea cell membrane disruption
→ MCR enzyme interference
→ ↓ Methane synthesis at the archaea
SSF fermentation metabolites — including short-chain organic acids and other bioactives generated during the proprietary solid-state process — promote succinate and propionate synthesis in the rumen microbiome. This creates a competitive alternative hydrogen sink: surplus H₂ is channelled into propionate rather than CH₄. Propionate (propionic acid) is the primary gluconeogenic substrate in ruminants, so this pathway simultaneously reduces methane and provides animals with additional energy for growth and milk production.
→ Succinate/propionate pathway activation
→ H₂ consumed by propionate synthesis
→ ↓ H₂ available for methanogens
→ ↑ Propionate → glucose for animal
Combined Effect on Rumen Outputs
| Measured Outcome | Mechanism Responsible | Observed Direction | Evidence Tier |
|---|---|---|---|
| Enteric CH₄ (methane gas) | Direct: archaea inhibition | ↓ ~50% vs. control (in-vitro) | GREEN — Verified In-vitro |
| Propionate (C3 VFA) | Indirect: H₂ redirection | ↑ Relative proportion vs. control | GREEN — Verified In-vitro |
| Total VFA production | Both mechanisms | Maintained (no significant decline) | GREEN — Verified In-vitro |
| Fibre digestibility (NDF/ADF) | Indirect: lower H₂ partial pressure | Preserved vs. control | GREEN — Verified In-vitro |
| In-vivo CH₄ (live animal) | Both mechanisms | Under investigation — Q4 2026 | YELLOW — In-vivo Pending |
| Milk yield / body weight gain | Indirect: propionate energy | Under investigation — Q4 2026 | YELLOW — In-vivo Pending |
GREEN claims are based on validated in-vitro rumen fermentation assay data. YELLOW claims are subject to ongoing in-vivo trials at Seoul National University Pyeongchang (Q4 2026). Data subject to change upon publication.
Why Dual-Pathway Action Matters for Commercial Viability
Single-target inhibition risks microbial adaptation over time. Dual-pathway pressure on the hydrogen economy makes it harder for archaea populations to evolve resistance.
Propionate redirection converts what would be lost as methane into a glucose precursor. Farmers see methane reduction without the feed efficiency decline that undermines farmer adoption of single-mechanism products.
Both pathways operate through naturally derived bioactives. No synthetic chemicals, no toxic bromoform residues, no halogenated compounds — suitable for premium, organic, and eco-label market positioning.
The bromoform-free safety profile aligns with South Korea's Feed Act registration requirements and international regulatory trends for natural-origin feed additives.
Why SSF Enables the Dual Mechanism
The dual mechanism is enabled by AENON's proprietary SSF process. Solid-state fermentation generates the fermentation metabolites — short-chain organic acids and bioactive polysaccharide fragments — that activate both the direct archaea inhibition pathway and the indirect H₂→propionate redirection pathway.
- •Sulphated polysaccharide fragments (Direct Mechanism)
- •Short-chain organic acids (Indirect Mechanism)
- •Bioactive peptides (Synergistic support)
- •Enhanced cell wall bioavailability
- •Archaea membrane disruption
- •MCR enzyme interference
- •Propionate pathway activation
- •~50% CH₄ reduction in-vitro