Production Technology

Cold mechanical extraction is the only process that preserves the full bioactive profile of a vegetable oil — tocopherols, sterols, polyphenols, essential fatty acids. Any uncontrolled heat input irreversibly degrades these compounds. Any use of extraction solvents introduces residues incompatible with top-tier cosmetic and nutraceutical applications.

Folk Oils operates exclusively with cold mechanical extraction across its portfolio of 20 vegetable oils. Production parameters — press temperature, seed moisture, applied mechanical pressure, contact time — are continuously controlled on every line, for every species, on every lot.

The result is directly visible on the certificate of analysis: consistently low peroxide indices at the press outlet, intact tocopherol profiles, acid indices meeting the most demanding international market specifications.

Extraction yield is the main determinant of vegetable oil production cost. An extra yield point on a high-value species represents a structural economic advantage — not one-off, but permanent, reproduced on every production lot.

Folk Oils has developed and refined raw material preparation protocols — grinding calibration, residual moisture control, thermal conditioning before pressing — to achieve among the highest extraction yields in the sector on its main portfolio species.

This yield advantage flows directly into the unit cost of every litre produced. It is why Folk Oils can offer analytically impeccable oil at a price level less efficient operators cannot reach without sacrificing quality.

Vegetable oil extraction generates a residual solid fraction — press cake or meal — whose functional value is systematically under-exploited in conventional industrial models. Most operators sell it as low-value by-product or treat it as process waste.

Folk Oils made the opposite choice.

Our press cakes are valorized in two complementary high-value streams. The first is plant protein production — isolates and concentrates from high-protein species for food and nutraceutical industries. The second is specialty bioactive extraction — sterols, squalene, phenolic compounds — for advanced cosmetic and precision nutraceutical markets.

This full plant valorization produces a direct, measurable economic effect: total production cost is spread across several simultaneous value streams. Oil no longer has to bear the entire raw material cost alone. The result is a structurally competitive price architecture — durable, independent of market swings, not replicable by an operator that does not valorize co-products.

Folk Oils has on-site physical refining capacity covering all finishing operations required for industrial grades — free acidity neutralization, bleaching earth decolorization, low-temperature vacuum deodorization.

Integrating refining in our own infrastructure delivers three direct operational advantages for customers. Lot traceability is uninterrupted between extraction and the refined grade delivered. Refining parameters are adjustable to customer specification — target acidity, decolorization level, odour threshold. And no external subcontracting removes delays, mark-ups and cross-contamination risks inherent in third-party refiners.

Every Folk Oils production lot undergoes full in-house laboratory analysis before commercial release. Acid value, peroxide index, fatty acid profile by gas chromatography, K232 and K270 spectrophotometric indices, moisture, insoluble impurities — the full analytical panel is run systematically, without exception, regardless of volume or destination.

The certificate of analysis is issued under our direct responsibility and sent before shipment. For customers under strict frameworks — pharmaceutical markets, third-party organic certifications, international retailer codes — supplementary analyses by accredited independent laboratories are available on request.

Vegetable oil degradation between production and customer receipt is a real, measurable risk. Oxidation from air contact, photo-oxidation, packaging migration contamination — each mechanism shows up as higher peroxide index and degradation of the validated analytical profile.

Folk Oils stores all production in closed stainless tanks under inert nitrogen atmosphere, at controlled temperature and protected from light. Shipping uses sealed metal drums, IBC or flexitank depending on volume, with nitrogen blanketing on sensitive grades.

What your receiving laboratory analyses on arrival is analytically identical to what our laboratory certified at dispatch.