Canna~Fangled Abstracts

Hemp-seed and olive oils: their stability against oxidation and use in O/W emulsions.

By July 16, 2005 No Comments
 2005 Jul-Aug;56(4):227-51.

pm1Hempseed and olive oils: their stability against oxidation and use in O/W emulsions.

Abstract

Hempseed oil has several positive effects on the skin: thanks to its unsaturated fatty acid (PUFA) content it alleviates skin problems such as dryness and those related to the aging process. We present a comparative study of hempseed and olive oils, determining some physicochemical indices and evaluating their stability against oxidation. The peroxide value of hempseed oil was below 20, the threshold limit for edible oils. Hempseed oil was less stable against peroxidation than olive oil, but MDA and MONO assays showed its stability to be above expectations. The chlorophyll contained in extra virgin olive oil had a higher photostability than that contained in hempseed oil, possibly due to the larger amount of antioxidant in the olive oil. A certain amount of Vitamin E was found in hempseed oil. Since quality analyses indicated that hempseed oil is relatively stable, emulsions were prepared with the two oils, and their stability and rheological characteristics were tested. Some of the resulting gel-emulsions were suitable for spraying on the skin.
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