(-)-柠檬烯，一种香味单萜，主要存在于柑橘皮油中。它也存在于迷迭香、桉树、薰衣草、香菜、柠檬草和薄荷等草药的精油中，也存在于茶树油和松节油中。柠檬烯的氧化产物可能导致香料相关的接触过敏。 (-)-Limonene, a fragrance monoterpene, is mainly found in citrus peel oil. It is also found in the essential oils of herbs such as rosemary, eucalyptus, lavender, caraway, lemongrass, and peppermint) and also tea tree oil, and turpentine oil. The oxidation products of limonene may lead to fragrance-related contact allergy.