薰衣草花精油的提取（Extraction of lavender essential oil）.doc

薰衣草花精油的提取（Extraction of lavender essential oil） Extraction of lavender essential oil First, the purpose of the experiment 1. to understand the extraction technology of essential oils; 2. learn and master the extraction methods and operation process of lavender essential oil. Two 、 experimental principle Lavender (Lavender) (Labiatae) is a perennial aromatic plant, dried plant has a strong aroma, known as king of spices of the title, is the worlds important essence of raw materials. The essential oil extracted from the flowers of lavender is fragrant and fragrant, and has a wide range of uses. It has the functions of expelling insects, removing peculiar smell, antibiosis, sedation, hypnosis and relieving mental pressure. Lavender is one of the plant groups with common attributes of medicinal plants and aromatic plants. There are many methods for extracting essential oils, summed up the following nine types: pressing grinding method, steam distillation, solvent extraction, supercritical CO2 extraction, ultrasonic assisted extraction, microwave extraction, adsorption, micro - capsule aqueous two-phase extraction and enzyme extraction method. The extraction technology of modern essential oils tends to extract more fully and separate products Higher purity. In this experiment, organic solvent distillation, microwave irradiation and ultrasonic assisted extraction were used to extract essential oils of lavender. 1. organic solvent distillation To solvent distillation is aromatic raw materials on organic solvent (musk substances including essential oil containing plant and animal parts, resin etc.) as selective distillation, exclude unimportant components, selective extraction of flavoring substances. Organic solvent distillation has the advantages of simple operation and selective extraction of aroma components by selecting different extraction organic solvents. 2. microwave assisted extraction method Microwave irradiation assisted extraction is a process that induces the

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