Process Engineering · Patent Core
Why Solid-State Fermentation?
The Gel-Formation Problem
Liquid fermentation of Eucheuma denticulatum is technically impossible at commercial scale — because of carrageenan. This is not a design choice. It is a physical constraint that drives the entire Aenon patent strategy.
SSF @ 45°C
Patent-protected process
ι-carrageenan gel avoidance
KIPO patent-pending
The Core Problem
Carrageenan Gel Formation:
Why Liquid Fermentation Fails
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Liquid Fermentation — Not Viable
Eucheuma denticulatum (Spinosum) contains ι-carrageenan — a sulphated polysaccharide that forms a firm, elastic gel when hydrated at room temperature (typically above 0.5–1% concentration in water).
- At commercial concentrations (10–30% seaweed in liquid medium), gel formation is immediate
- Gel blocks oxygen/nutrient diffusion → fermentation stalls or fails
- Centrifugal mixing breaks gel structure but denatures bioactive fractions
- Downstream processing of gelled mass is prohibitively costly
- Scale-up beyond bench: technically and economically unworkable
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Solid-State Fermentation — The Solution
SSF uses the seaweed substrate in its solid/dried form, with controlled moisture addition — below the gel-formation threshold. This:
- Avoids gel formation entirely
- Maintains substrate integrity and bioactive fraction structure
- Allows aerobic + facultative anaerobic fermentation throughout the solid matrix
- Scalable: established SSF infrastructure exists for feed production
- Post-fermentation drying and milling is straightforward
The Chain of Necessity (Patent Logic)
Eucheuma denticulatum
ι-carrageenan species
→
ι-carrageenan species
Gel formation
room temp, aqueous
→
room temp, aqueous
Liquid fermentation
impossible at scale
→
impossible at scale
SSF required
core innovation
→
core innovation
45°C needed
thermotolerant strains
→
thermotolerant strains
Proprietary strains
thermotolerant co-culture
→
thermotolerant co-culture
KIPO 22 claims
patent application
patent application
Each arrow represents a logical necessity, not a preference. This is why SSF is the core patent claim — not just a processing method choice.
Process Definition
Solid-State Fermentation (SSF):
Process Definition
SSF is a fermentation process conducted on a solid substrate with little to no free water — as opposed to submerged liquid fermentation (SmF). SSF has a long history in traditional fermented foods (miso, koji, tempeh) and is increasingly used in industrial enzyme, feed, and bioactive compound production.
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Solid Substrate
Dried seaweed particles — moisture below gel-formation threshold
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45°C Temperature
Set by strain thermotolerance and substrate stability requirements
⏱️
Proprietary Primary Cycle
Optimised for bioactive compound profile and strain metabolic output
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Two Co-Strains
Proprietary dual-strain co-culture — thermotolerant at 45°C
Process Flow
AenoFeed SC-1:
SSF Process Step-by-Step
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Step 1 — Raw Material: Dual-Species Seaweed Blend
Selected red seaweed species · proprietary blend ratio
Two complementary species of tropical red seaweed are sourced, quality-screened, and blended at a
proprietary ratio that is a core KIPO patent claim. The blend ratio is not arbitrary — it is optimised
to achieve the required ι:κ carrageenan balance for the SSF matrix, and is validated by empirical
fermentation outcome data. Species identity, origin, and blend ratio are documented in the patent application.
⚙️
Step 2 — Size Reduction & Moisture Standardisation
Controlled particle size · moisture below gel-formation threshold
The dried seaweed blend is milled to a controlled particle size distribution that ensures uniform microbial
colonisation and substrate aeration throughout the solid matrix. Moisture is standardised to a defined window
that simultaneously supports microbial activity and prevents ι-carrageenan gel formation — the critical
physical balance that makes SSF the only viable fermentation route for this substrate.
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Step 3 — Dual-Strain Inoculation
Proprietary co-culture · thermotolerant strains · 45°C-compatible
Two specifically selected microbial strains are co-inoculated into the prepared substrate. Both strains are selected
for thermotolerance at the SSF process temperature, compatibility with the seaweed carbohydrate matrix,
and complementary metabolic profiles that together produce the target bioactive compound output.
The co-culture configuration is a KIPO patent claim — strain identity and inoculation parameters are
documented in the patent application and not published here.
🌡️
Step 4 — SSF Incubation
45°C · controlled humidity · aerated solid-state environment
The inoculated substrate undergoes solid-state fermentation at 45°C under controlled humidity and periodic
aeration. Temperature is fixed by the thermotolerance optimum of the selected strains — it is a process
necessity, not an arbitrary design choice. Duration and environmental parameters are optimised for target
bioactive compound profile and are patent-protected. Specific incubation durations and aeration schedules
are not disclosed here.
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Step 5 — Post-Fermentation Drying & Stabilisation
Low moisture · fermentation halt · storage-stable product
After the primary fermentation cycle, the substrate is dried to a low target moisture to halt fermentation,
inactivate viable microorganisms, and stabilise the product for feed supply chain handling. Drying conditions
are optimised to preserve the bioactive compound fraction. Final moisture and microbial count specifications
are QC release parameters. Specific parameters are maintained as proprietary process data.
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Step 6 — Milling, Quality Control & Packaging
AenoFeed SC-1 final product · feed-grade specification
The dried fermented substrate is milled to a feed-compatible particle size and subjected to full QC
release testing — including moisture, microbiological safety, and bioactive fraction verification.
The product is packaged under moisture-barrier conditions for standard feed supply chain storage.
AenoFeed SC-1 is designed for direct inclusion into existing TMR (Total Mixed Ration) systems without
protocol change at the farm level.
Technical Parameters
Process Parameter Summary
Scientific Significance
Why the SSF Process is
the Core IP Asset
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Non-Obviousness
The gel-formation constraint from ι-carrageenan is not widely documented in the feed fermentation literature.
The necessity of SSF for this specific substrate combination is a genuine non-obvious innovation.
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Verification Pathway
The gel-formation problem can be empirically verified by anyone with access to Spinosum and water.
This transparency makes the patent rationale robust — it is based on observable physical chemistry.
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Commercial Moat
Any competitor seeking to ferment Spinosum at commercial scale must either solve the gel problem independently
or license the SSF pathway. The KIPO patent covers both the process and the strain combination.