畢業(yè)論文超臨界co2萃取海南黎藥麥奮中揮發(fā)油有效成分的工藝研究-展示頁
2025-07-01 17:07本頁面
【正文】 地有零星的分布，風藤的植物資源極度匱乏[3]。 Volatile oil。 Generally the essential oil is sensitive to air, sunlight and temperature, perishable, therefore, should be put inside brown bottle dark airtight preservation at low temperature. Thus this thesis will use the most rapid development in recent years, the most noteworthy of supercritical CO2 extraction and separation technology. And supercritical CO2 extraction of natural products, has many advantages, such as good extraction, separation efficiency of extraction, separation and enrichment, the overall operating cost is low, no residue, no pollution, energy saving, convenient operation, etc. Now the supercritical CO2 extraction technology has been widely used in spices, food, medicine, petroleum, chemical, and other fields, and has been widely promoted by the industry. Using this technology for volatile oil deep processing and prehensive utilization of Hainan li medicine MaiFen to find an effective way. Methods: This article USES the Hainan li medicine extraction by supercritical CO2 extraction of volatile oil and effective constituents in MaiFen technology research, mainly examines the extraction temperature, extraction pressure, time and CO2 flow influence factors.Results: The extraction pressure and temperature on the influence of the volatile oil content in the Hainan li medicine MaiFen has significance, but also because of the constraints, so the whole experiment based on the CO2 flow 15 ml/min to experiment. Experiments showed that the supercritical CO2 extraction method to extract volatile oil of Hainan li medicine in pepper stem the best process conditions for: 2030 goals have medicinal materials crushing sieve, 15Mpa extraction pressure, extraction temperature of 37 ℃, time of 2h. Keywords: Supercritical CO2。關(guān)鍵詞：超臨界CO2；海南黎藥麥奮；揮發(fā)油；單因素實驗；正交試驗ABSTRACTHainan li medicine MaiFen (alias abnormity kadsura pepper stem, the plum flower drilling, wind, wind cane), Chinese pharmacopoeia record for pepper pepper stem families wind cane plant, its stem, with functions of wet, the function of the channels and collaterals, and narrow distribution range and wind cane plants resources extremely deficient. At the same time is an important part of the Chinese nation excellent culture of Chinese medicine, is the quintessence of China. Known according to the survey, the plant munity in the volatile oil distribution range is very wide, there are hundreds of different plants have been used as Chinese herbs containing volatile oil, volatile oil, also known as essential oils, the plant secondary metabolites in the body is posed of smaller relative molecular mass of simple pounds, aromatic smell, can be volatile at room temperature, with the steam distillation of the floorboard of the oily liquid. In low concentration of ethanol and water, its solubility is poor, can39。結(jié)果：萃取壓力和低溫對海南黎藥麥奮中揮發(fā)油含量的影響具有顯著性意義，同時也由于條件的限制，故此整個實驗都以CO2流量15mL/min為標準來進行實驗。用此技術(shù)為海南黎藥麥奮的揮發(fā)油深加工和綜合利用尋找一條有效途徑。且超臨界CO2在提取天然產(chǎn)物，具有很多優(yōu)點，如有較好的萃取、分離效能，集萃取、分離、濃縮為一體，整體操作成本低，無殘留劑、無污染、節(jié)約能源、操作方便等。它一般易溶于氯仿、石油醚、乙醚、油脂、二硫化碳等有機溶劑；一般揮發(fā)油對空氣、日光和溫度都較為敏感，
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