Brown seaweed
Oarweed, dried and milled
Laminaria digitata — Laminaria Digitata Powder
The default Run below is Brittany, France, 0.70 kgCO2e/kg gross, Category B. Published values for this ingredient span 0.55 to 3.10 kgCO2e/kg, which is why a number without its production parameters is not worth forwarding.
Species record
- Species
- Laminaria digitata
- INCI name
- Laminaria Digitata Powder
- Group
- Brown seaweed
- Harvest methods
- Wild-harvested by scoubidou vessel. Hand-cut at spring low tide
- Conservation status
- Not assessed by IUCN. Managed by seasonal quota in France.
- Typical uses
- Cosmetic extracts, alginate feedstock, food and feed powders.
- Declared unit
- One kilogram of dried, milled oarweed at 8% residual moisture.
- Typical gross range
- 0.55 to 3.10 kgCO2e/kg, Category B
- Default sourcing region
- Brittany, France, Route distance, Roscoff to Rotterdam gate
- Drying dominates every run. Residual moisture is the single most sensitive parameter after grid intensity.
- Wild-harvest gear is amortised over ten seasons.
Calculator
Seven inputs, every one already filled with a regional default. Change the two or three you know. Nothing is submitted and nothing is saved.
Line-item inventory
| Line | Scope | kgCO2e/kg |
|---|---|---|
| Harvest and vessel fuel8.5 kg wet biomass at 2.64 l diesel per tonne2.68 kgCO2e/litre · IPCC 2006 Guidelines Vol. 2 stationary and mobile combustion, AR6 GWP100 · Category B | 1 | 0.060 |
| Drying energy5.40 kWh/kg on the France grid0.0573 kgCO2e/kWh · IEA Emission Factors 2024, national average generation intensity · Category B | 2 | 0.309 |
| Extraction, milling and utilities2.10 kWh/kg on the France grid0.0573 kgCO2e/kWh · IEA Emission Factors 2024, national average generation intensity · Category B | 2 | 0.120 |
| Fuel supply chain, well-to-tank0.022 l diesel upstream0.64 kgCO2e/litre · UK DESNZ conversion factors 2024, WTT diesel · Category B | 3 | 0.014 |
| Harvest gear and cultivation inputsGear, seed, nutrients and process chemicals, amortised0.027 kgCO2e/kg · Published European kelp LCA literature, mechanically dried powder, gross cradle-to-gate. · Category B | 3 | 0.027 |
| Inbound haul, wet biomass8.5 kg over 60 km by road, Brittany, France0.096 kgCO2e/t-km · GLEC Framework v3.0 default, >32t diesel truck · Category B | 3 | 0.049 |
| Outbound freight, finished ingredient1 kg over 900 km, road freight, heavy goods0.096 kgCO2e/t-km · GLEC Framework v3.0 default, >32t diesel truck · Category B | 3 | 0.086 |
| Packaging0.030 kg kraft multiwall paper sack per kg1.10 kgCO2e/kg · Published European kraft sack paper EPD range, mid-point · Category C | 3 | 0.033 |
| Gross footprint | 1+2+3 | 0.700 |
Every factor and its source is printed in the Report. The full factor set is on the Methodology page.
Gross footprint, cradle-to-gate
Species-specific secondary data with named sources, applied to your stated production parameters.
Scope 1
8.6%
Harvest and fuel
Scope 2
61.4%
Purchased electricity
Scope 3
30.0%
Upstream and freight
Largest lever: drying energy, 0.31 kgCO2e/kg of the total, Category B.
Batch total for 1,000 kg: 699.6 kgCO2e
Biogenic uptake
0.94 kgCO2e/kg
Reported separately. Non-permanent. Not subtracted.
Land-based comparison
Bluecarbon Methodology 2026.2, Category B.
Published dairy protein LCA range, mid-point. Category C.
Published livestock LCA range, mid-point. Category C.
Published bovine hide and bone processing LCA range, mid-point. Category C.
Blue Bioeconomy Score: 80.0th percentile within the peer set of 6 brown seaweed defaults in this database, Methodology 2026.2.
Get the Report
€390- Line-item inventory, every emission factor with its source
- Gross footprint with its Category grade, and the Scope 1/2/3 split
- Biogenic uptake reported separately, never subtracted
- Peer set and Blue Bioeconomy Score, with the peer set named
- Reduction section, quantified in kgCO2e/kg
- Methodology version, limitations, and the colophon
One ingredient, one Run, Laminaria digitata, Category B. Nothing recurs.
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