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Supercritical CO 2 extract from strawberry seeds as a valuable component of mild cleansing compositions
Author(s) -
Sikora E.,
Michorczyk P.,
Olszańska M.,
Ogonowski J.
Publication year - 2015
Publication title -
international journal of cosmetic science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 62
eISSN - 1468-2494
pISSN - 0142-5463
DOI - 10.1111/ics.12234
Subject(s) - cosmetics , chemistry , saponification , pulmonary surfactant , chromatography , softening , food science , supercritical fluid , organic chemistry , materials science , biochemistry , composite material
Synopsis Objective The aim of this work was an elaboration of mild cleansing compositions, containing supercritical CO 2 extract from strawberry seeds ( SC ‐ CO 2 strawberry seed oil), as a moisturizing and skin‐softening agent. The influence of concentration of the oil on user properties of shower/bath products was studied. Methods A series of products (shower/bath cosmetics) composed mainly of mild surfactants (amphoacetates, sulfosuccinates, betaines) and containing different amounts of the oil (0.5 up to 5.0%) were prepared. For the stable products (formulations containing up to 2% of the oil), the influence of the SC ‐ CO 2 strawberry seed oil addition on the products’ stability, foam ability, surface tension, pH and rheological properties was studied. Moreover, the skin compatibility and moisturizing efficiency of the cleansing products were recorded in a group of 15 volunteers (including 10 women and five men, aged 20–30 years), using skin diagnosis system Aramo TS , Aram Huvis Co. Additionally, characterization of CO 2 extract from strawberry seeds was performed. Measurements of the oil's analytical constants, that is acid value and saponification number, were conducted according to Polish Standard PN ‐ EN ISO 660:2010 and PN ‐ EN ISO 3657:2013, respectively. Results The oil concentration influences stability of the products. Only the formulations containing 0.5–2% of the extract have shown high stability. Moreover, used in the amount up to 2% the SC ‐ CO 2, strawberry seed oil does not affect significantly the cleansing and foaming properties of the products. The obtained shower/bath cosmetics showed good user properties and additionally good skin‐moisturizing effect. Conclusion The supercritical CO 2 extract from strawberry seeds, rich source of unsaturated fatty acid, could be successfully used in the formulation of body washing compositions as a moisturizing and skin‐softening agent.