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Styrax balsam : ウィキペディア英語版 | Styrax balsam
Styrax (storax) balsam is a recent natural resin isolated from the wounded bark of Liquidambar orientalis Mill. (Asia Minor) and Liquidambar styraciflua L. (Central America) (Hamamelidaceae). It is often called benzoic resin, a similar resin obtained from the Styracaceae plant family. == Composition == Purified storax contains circa 33 to 50 % storesin, an alcoholic resin, both free and as cinnamic esters. Contains 5 to 15 % cinnamic acid, 5 to 15 % cinnamyl cinnamate, circa 10 % phenylpropyl cinnamate; small amounts of ethyl cinnamate, benzyl cinnamate, and styrene, Some may contain traces of vanillin. Some sources report a resin containing triterpenic acids (oleanolic and 3-epioleanolic acids).
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