Specialty Marine Lipids

Bulk fish oil is a numbers game: litres, tonnes, price per kilo. The lipids on this page play a different game altogether. These are the minor classes — the triterpenes, ether lipids, wax esters and polar phospholipids that sit inside marine raw materials at low levels but carry most of their technical value — and they are what our extraction and fractionation lines are actually built around.

Eata Marisource supplies specialty marine lipids to R&D laboratories, ingredient manufacturers and industrial formulators worldwide. Every lot leaves with a full certificate of analysis, and because the chemistry rarely fits an off-the-shelf specification, most of what we ship has been fractionated, blended or chemically modified for the customer who ordered it.

I. One Resource, Eight Distinct Chemistries

"Specialty marine lipid" is not a single product but a shelf of them. The table below maps the classes we regularly hold in stock to their typical origin and the property that makes buyers look for them specifically.

II. Five Sourcing Streams Behind the Shelf

Marine lipids are only as good as their origin, so we keep several independent routes to the same molecule. If one channel tightens, your supply does not.

• Zooplankton biomass — short-lived calanoid copepods harvested from cold northern waters. Their one-year lifespan leaves minimal time for persistent contaminants to accumulate, and the wax ester oil pressed from them arrives pre-charged with natural astaxanthin.
• Microbial fermentation — engineered yeast and algal strains that build squalene and structured lipids independently of catches, seasons or quotas — the cleanest provenance story available today.
• Fish roe and cephalopod fractions — the richest matrices for phosphatidylcholine-type polar lipids with the omega-3 fatty acids still esterified in place.
• Refining side-streams — deodoriser distillates collected during marine oil processing, an economical feedstock for sterol and squalene recovery.
• Cold-water fish liver oils — the classical matrix for alkylglycerols and vitamin-bearing lipid fractions, still unmatched for ether lipid content.

III. Squalene and Squalane, Sourced Without the Compromise

Squalene earned its name in shark liver, but the market has moved: olive-derived material now covers roughly half of global demand and fermentation is closing the rest of the gap. We supply fermentation-derived squalene and its fully hydrogenated counterpart squalane — both colourless, both C30, and both delivered with a provenance statement your auditors can actually work with.

Where the molecule earns its keep:

• Emulsion development — squalene-based oil-in-water systems have proved themselves in some of the most demanding formulation work of the past two decades, and the molecule remains a first-choice oil phase for emulsion and droplet-stability studies.
• Lipid nanoparticle and carrier research — biocompatible hydrocarbon oil for droplet and carrier screening.
• Personal-care bases — squalane is a benchmark emollient: colourless, odour-neutral, highly stable and non-comedogenic.
• Reference and method work — quantitative standards for squalene assay in oils, oleochemicals and unsaponifiable fractions.

IV. Wax Esters: What Copepods Do Differently

Most fish bank their energy as triglyceride. Calanoid copepods bank it as wax ester — long-chain fatty alcohols chemically tied to long-chain fatty acids — and that structural difference is the entire commercial story. Oil pressed from Calanus-type biomass runs 80–90% wax esters, with total fatty alcohols above 28%, the mono-unsaturated alcohols C20:1 n-9 and C22:1 n-11 as flagship components, and EPA, DHA and stearidonic acid each above 4% of total fatty acids. The same oil carries 600–2,600 mg/kg of esterified astaxanthin: antioxidant protection built into the oil rather than dosed in afterwards, and the reason it pours a deep ruby red.

• Personal care — a jojoba-like ester phase with a marine fingerprint; superb skin feel and oxidative shelf life.
• Lubricants and coatings — high-cetoleic wax ester chemistry for boundary lubrication and film-forming ester components.
• Oleochemical intermediates — reduction or transesterification routes to specialty fatty alcohols and esters.
• Aquaculture research — a validated alternative lipid source in salmonid feed trials, with published digestibility data behind it.

V. Marine Phospholipids: EPA and DHA Still in the Molecule

Plant lecithins carry C18 fatty acids. Krill and roe phospholipids carry EPA and DHA — analyses of krill lipid report EPA at roughly 31% and DHA at about 15% of the phospholipid fraction, against only a few percent in the accompanying triglyceride pool. Phosphatidylcholine dominates the polar lipid profile, with phosphatidylethanolamine, phosphatidylinositol, phosphatidylserine and sphingomyelin in supporting roles. Polar lipid content varies with harvest and extraction route — published krill figures span roughly 40% to beyond 80% of total lipids — which is exactly why we characterise every fraction lot by lot instead of quoting a single generic number.

• Liposome and lipid nanoparticle preparation — PC-rich polar lipids for vesicle formation and encapsulation screening.
• Model membrane work — defined PC/PE/PS/SM ratios approximating native marine membranes.
• Omega-3 emulsification — phospholipid-stabilised systems where triglyceride oils alone break.

VI. Alkylglycerols and Ether Lipids

Swap the ester bond at sn-1 for an ether linkage and you leave ordinary glyceride chemistry behind. Batyl (C18:0), chimyl (C16:0) and selachyl (C18:1) alcohols — the classical alkylglycerols — concentrate in cold-water fish liver oils and in certain marine invertebrate fractions. We supply them as AKG-rich concentrates for metabolism and membrane studies, and as purified individual alcohols for use as reference materials and synthesis intermediates.

VII. Sterols, Unsaponifiables and the Small Fractions That Matter

Cholesterol crystallised from marine sources remains the working standard for liposome phase-behaviour research, and marine sterol mixtures find steady use in membrane and emulsion science. At the industrial end of the shelf, deodoriser distillates from marine oil refining yield unsaponifiable fractions rich in squalene, sterols and terpene alcohols — an economical feedstock when purity targets sit below pharmaceutical grade but well above crude. Tell us the composition you need and we will match the fraction to it.

VIII. Physical Form, Melting Behaviour and Handling

Lipids are polymorphic: the same wax ester can pour, cream or set depending on its thermal history. We screen solid-form products by differential scanning calorimetry before release, offer prilling and pastillation for dust-free dosing, and ship oxidation-sensitive oils under nitrogen blanketing in amber glass or lined steel. Storage recommendations travel with every lot — there is no point engineering a stable molecule and then handing it to a warehouse that undoes the work.

IX. How Every Lot Is Characterised

One certificate, seven angles of attack. These are the tests we consider the minimum honest description of a specialty lipid — and the ones our own release decisions are made against.

X. Built Around Your Process, Not Ours

The list below is where most enquiries end up. If your requirement is stranger than any of it, that is usually a good sign — the strange ones are the interesting ones.

• Custom fractionation — urea complexation, chromatographic separation, wiped-film and short-path distillation tuned to your target composition.
• Chemical modification — hydrogenation to squalane, transesterification, and reduction of wax esters to defined fatty alcohol cuts.
• Blending — multi-component lipid systems prepared to an agreed analytical fingerprint, batch after batch.
• Packaging — research-scale vials through to nitrogen-blanketed industrial drums, with cold-chain options for the most fragile fractions.
• Documentation — certificates of analysis, provenance statements and method reports assembled to your quality system's requirements.

Send us the specification you are working to — or just the problem you are trying to solve — and the Eata Marisource team will come back with a material, a route to it, and the analytical evidence that it is what we say it is.

For Research or Industrial Raw Materials, Not For Personal Medical Use!