Product 03 · Bio-Antifungal · PMRA Biopesticide
TRL 3 · Lead Claim PMRA Biopesticide · ~18–24 months · The Moat

Bio-antifungal postharvest decay control — the regulatory moat.

Polyphenol/acetogenin disruption of fungal cell-membrane integrity. PMRA biochemical pathway.

PhytoGuard™ is a standardised aqueous avocado-seed extract applied as a postharvest dip or coating, controlling the decay fungi that drive postharvest loss. Because it makes an explicit decay-control claim, it is regulated by the PMRA as a biopesticide on the biochemical pathway — the slow, defensible barrier a fast-follower cannot shortcut. It is pursued behind the food-grade products precisely because it is slow and defensible. No avocado-seed-derived postharvest product is registered anywhere in the world.

PhytoGuard Partners View the Evidence Base
Classification
Biochemical pesticide — PMRA Pest Control Products Act, biochemical (biopesticide) stream. Naturally derived, non-toxic mode of action; harmonised with the US-EPA Biopesticides division. A reduced data set, not the full conventional dossier.
Lead Claim
Control of citrus postharvest green and blue mould (Penicillium digitatum, P. italicum) — whole extract, in vivo, on fruit. Botrytis and other storage pathogens are associated secondary targets, pending their own in-vivo data.
Readiness
TRL 3 for the lead claim (Lima de Souza et al. 2026). PMRA no-cost pre-submission consultation (Form 6117) planned. Realistic registration horizon ~18–24 months for a new active — not the multi-year conventional floor.

Mode of Action

Polyphenol/acetogenin membrane disruption — a non-toxic biochemical mode of action.

Avocado seed is the most polyphenol-dense fraction of the fruit. The standardised aqueous extract — polyphenols and acetogenins — disrupts fungal cell-membrane integrity, controlling the decay fungi responsible for postharvest loss. This naturally occurring, non-toxic mode of action is what qualifies the substance for the PMRA's biochemical (biopesticide) stream rather than the conventional-chemical dossier.

Lead Claim · TRL 3
Citrus Green & Blue Mould
Penicillium digitatum / italicum
Avocado stone extract controls citrus postharvest green and blue mould — whole extract, in vivo, on fruit (Lima de Souza et al. 2026). The PMRA pre-submission anchor.
TRL 3 · PMRA anchor
Secondary Target · TRL 2–3
Botrytis cinerea
Antifungal activity of seed acetogenins against Botrytis cinerea (Echenique-Martínez et al. 2021). In-vivo, on-fruit data: the gap to TRL 4, run in the shared assay.
TRL 2–3 · associated target
Secondary Target · TRL 2–3
Other Storage Pathogens
Broader antimicrobial activity from MAE aqueous seed extracts (Skenderidis et al. 2021; Leontopoulos et al. 2022). Each target pending its own postharvest in-vivo data.
TRL 2–3 · associated target

Regulatory logic: a non-toxic mode of action + a naturally occurring substance = eligibility for the PMRA biochemical pathway (reduced data set vs. a conventional pesticide). TRL is scored per target pathogen; the lead anchor is whole-extract, in vivo, on fruit — the standard the PMRA requires. Product names are proposed, pending trademark clearance.

Market Opportunity

A growing biofungicide market — with no registered avocado-seed product.

$1.72B
Global biofungicide market, 2025
$3.93B
Projected biofungicide market by 2035 (~8.6% CAGR)
Faster
Bio-fungicide segment growing faster than synthetic alternatives
0
Avocado-seed postharvest products registered with PMRA or US-EPA — anywhere

Three forces converge in PhytoGuard™'s favour. Resistance: postharvest fungicides such as imazalil and thiabendazole are losing efficacy — for apple blue mould, resistance now spans all four labelled fungicides. Residue pressure: maximum residue limits are tightening and retailer programmes screen suppliers on residues. Consumer pull: shoppers reject visibly treated fruit. A food-derived, residue-free input is precisely what this moment rewards — and the registry returns no avocado-seed competitor anywhere.

Regulatory Pathway

PMRA biopesticide. Reduced data set. ~18–24 months.

Planned
Pre-Submission Consultation
No-cost PMRA consultation (Form 6117) to confirm the reduced biochemical data set and pathway. The package is scoped at no cost before committing.
Months 0–6
Product Chemistry
Identity, composition and manufacturing specification of the standardised SeedCircle extract — the reproducible active the dossier requires.
Months 0–6
Postharvest In-Vivo Efficacy (TRL 3→4)
Applicant's own postharvest in-vivo trials on the target commodity/pathogen. Citrus is the lead; the assay uses harvested fruit and completes in weeks.
Months 6–18
Reduced Tier I Health Data + Residue/MRL
A reduced human-health data set with waivers supported by the food-use origin and food-grade safety record; a dietary/residue determination (MRL or exemption); light ecotoxicology.
~Month 18–24
Biopesticide Registration
Biochemical (Category B/C) review — the realistic horizon is ~18–24 months for a new active, not the multi-year conventional floor. Section 18 emergency-use is a possible interim access route.

PhytoGuard Roadmap

The moat matures behind the revenue.

PhytoGuard™ is pursued deliberately, in the background, while FreshGuard™ and VitaFilm™ carry market entry. The biochemical-pathway registration — a genuine regulatory undertaking for a novel active — is the barrier competitors cannot shortcut. There is no toxicology ladder gating progress; applied in-vivo efficacy and lot-release quality control are the real gates.

Full three-track roadmap

Supply Chain

PhytoGuard™ is not viable without SeedCircle.

A PMRA product-chemistry dossier requires a defined, reproducible source of active ingredient. SeedCircle provides it: batch-segregated, cold-chain-compliant, lot-traceable Ontario avocado seed from named Tier-1 processors, standardised by a defined certificate of analysis. The same extract feeds FreshGuard™ and the starch feeds VitaFilm™ — so each waste-diversion agreement is justified by the combined demand of all three products.

SeedCircle architecture →