Method for extraction of peat active substances and use of their combination in skin regenerating cosmetic formulations

European Patent Application EP 2 878 342 A1, filed by the University of Latvia (Latvijas Universitate), describing a method for extracting bioactive substances from peat and combining them into a skin-regenerating cosmetic active complex. The same research group — Silamikele, Ramata-Stunda, and Muiznieks — published the companion microbiological characterisation paper (Ramata-Stunda 2015) in the academic literature.

The Inventive Step

The patent’s central claim is a specific formulation approach: combining a peat ethanol extract (0.5–1 vol%) with isolated humic acids (5–20 mg/mL) produces a synergistic active complex that outperforms either component alone for skin regeneration and anti-aging effects. This “extract + isolated HA” combination is the IP. The rationale is that whole peat extract contains a broad spectrum of compounds (including smaller organics, phenolics, and FA alongside HA), while isolated HA provides concentrated high-molecular-weight humic activity. The combination delivers both breadth (full extract) and concentration (isolated HA).

Antiradical and Anti-Aging Evidence

The patent documents antiradical (antioxidant) activity confirmed for the peat extract isolated by the proposed method. The combined extract + HA complex is claimed to reduce dermal aging markers — likely measured by in vitro assays on dermal fibroblast cultures, which is standard for cosmetic active ingredient substantiation.

Significance

A university patent signals that the research group believed their extraction and formulation method had commercial value worth protecting. For the knowledge graph, this is evidence that Latvian peat research has progressed from characterisation (Ramata-Stunda 2015) to application (patent) — the expected progression from basic research toward commercial formulation. Latvian peat is among the deposits studied by Orru (2011), which showed high humic substance content.