Some of them come first on the list in the world, such as cassiaoil, star anise, peppermint oil, menthol, turpentine oil, eucalyptus oil and cedar wood oil etc.
其中，如桂油、八角茴香、薄荷油、薄荷脑、桉叶油、松节油、柏木油等的产量已居世界前列或首位。
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The antioxidant effects of cassiaoil and clove oil used in processing of deep-fried beef were systematically studied, as well as the main processing factors affecting the antioxidant effects.